diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index 065e107c24944d6fdfe2948b431bca5037ada671..84ceaa3081a5b461bd93cdf588620d19c311f755 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -55,7 +55,7 @@ Server features:
 Procedure:
  1. Client calls EmptyCall with the default Empty message
 
-Asserts:
+Client asserts:
 * call was successful
 * response is non-null
 
@@ -84,7 +84,7 @@ Procedure:
     }
     ```
 
-Asserts:
+Client asserts:
 * call was successful
 * response payload type is COMPRESSABLE
 * response payload body is 314159 bytes in size
@@ -110,6 +110,7 @@ Procedure:
       }
     }
     ```
+
  3. Client then sends:
 
     ```
@@ -119,6 +120,7 @@ Procedure:
       }
     }
     ```
+
  4. Client then sends:
 
     ```
@@ -128,6 +130,7 @@ Procedure:
       }
     }
     ```
+
  5. Client then sends:
 
     ```
@@ -137,9 +140,10 @@ Procedure:
       }
     }
     ```
- 6. Client halfCloses
 
-Asserts:
+ 6. Client half-closes
+
+Client asserts:
 * call was successful
 * response aggregated_payload_size is 74922
 
@@ -172,7 +176,7 @@ Procedure:
     }
     ```
 
-Asserts:
+Client asserts:
 * call was successful
 * exactly four responses
 * response payloads are COMPRESSABLE
@@ -202,6 +206,7 @@ Procedure:
       }
     }
     ```
+
  2. After getting a reply, it sends:
 
     ```
@@ -215,6 +220,7 @@ Procedure:
       }
     }
     ```
+
  3. After getting a reply, it sends:
 
     ```
@@ -228,6 +234,7 @@ Procedure:
       }
     }
     ```
+
  4. After getting a reply, it sends:
 
     ```
@@ -242,7 +249,9 @@ Procedure:
     }
     ```
 
-Asserts:
+ 5. After getting a reply, client half-closes
+
+Client asserts:
 * call was successful
 * exactly four responses
 * response payloads are COMPRESSABLE
@@ -261,7 +270,7 @@ Server features:
 Procedure:
  1. Client calls FullDuplexCall and then half-closes
 
-Asserts:
+Client asserts:
 * call was successful
 * exactly zero responses
 
@@ -300,7 +309,7 @@ Procedure:
     }
     ```
 
-Asserts:
+Client asserts:
 * call was successful
 * received SimpleResponse.username equals the value of `--default_service_account` flag
 * received SimpleResponse.oauth_scope is in `--oauth_scope`
@@ -328,7 +337,7 @@ Server features:
 * [Echo OAuth Scope][]
 
 Procedure:
- 1. Client configures the channel to use ServiceAccountCredentials.
+ 1. Client configures the channel to use ServiceAccountCredentials
  2. Client calls UnaryCall with:
 
     ```
@@ -343,7 +352,7 @@ Procedure:
     }
     ```
 
-Asserts:
+Client asserts:
 * call was successful
 * received SimpleResponse.username is in the json key file read from
    `--service_account_key_file`
@@ -370,7 +379,7 @@ Server features:
 * [Echo OAuth Scope][]
 
 Procedure:
- 1. Client configures the channel to use JWTTokenCredentials.
+ 1. Client configures the channel to use JWTTokenCredentials
  2. Client calls UnaryCall with:
 
     ```
@@ -384,7 +393,7 @@ Procedure:
     }
     ```
 
-Asserts:
+Client asserts:
 * call was successful
 * received SimpleResponse.username is in the json key file read from
   `--service_account_key_file`
@@ -422,7 +431,7 @@ Server features:
 
 Procedure:
  1. Client uses the auth library to obtain an authorization token
- 2. Client configures the channel to use AccessTokenCredentials with the access token obtained in step 1.
+ 2. Client configures the channel to use AccessTokenCredentials with the access token obtained in step 1
  3. Client calls UnaryCall with the following message
 
     ```
@@ -431,8 +440,8 @@ Procedure:
       fill_oauth_scope: true
     }
     ```
-    
-Asserts:
+
+Client asserts:
 * call was successful
 * received SimpleResponse.username is in the json key file used by the auth
 library to obtain the authorization token
@@ -464,10 +473,10 @@ Server features:
 
 Procedure:
  1. Client uses the auth library to obtain an authorization token
- 2. Client configures the channel with just SSL credentials.
+ 2. Client configures the channel with just SSL credentials
  3. Client calls UnaryCall, setting per-call credentials to
- AccessTokenCredentials with the access token obtained in step 1. The request is
- the following message
+    AccessTokenCredentials with the access token obtained in step 1. The request
+    is the following message
 
     ```
     {
@@ -475,8 +484,8 @@ Procedure:
       fill_oauth_scope: true
     }
     ```
-    
-Asserts:
+
+Client asserts:
 * call was successful
 * received SimpleResponse.username is in the json key file used by the auth
 library to obtain the authorization token
@@ -496,8 +505,14 @@ Server features:
 * [Echo Metadata][]
 
 Procedure:
- 1. While sending custom metadata (ascii + binary) in the header, client calls
- UnaryCall with:
+ 1. The client attaches custom metadata with the following keys and values:
+
+    ```
+    key: "x-grpc-test-echo-initial", value: "test_initial_metadata_value"
+    key: "x-grpc-test-echo-trailing-bin", value: 0xababab
+    ```
+
+    to a UnaryCall with request:
 
     ```
     {
@@ -508,23 +523,41 @@ Procedure:
       }
     }
     ```
-The client attaches custom metadata with the following keys and values:
+
+ 2. The client attaches custom metadata with the following keys and values:
+
     ```
     key: "x-grpc-test-echo-initial", value: "test_initial_metadata_value"
     key: "x-grpc-test-echo-trailing-bin", value: 0xababab
     ```
- 2. Client repeats step 1. with FullDuplexCall instead of UnaryCall.
 
-Asserts:
+    to a FullDuplexCall with request:
+
+    ```
+    {
+      response_type: COMPRESSABLE
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+    and then half-closes
+
+Client asserts:
 * call was successful
-* metadata with key `"x-grpc-test-echo-initial"` and value `"test_initial_metadata_value"`is received in the initial metadata.
-* metadata with key `"x-grpc-test-echo-trailing-bin"` and value `0xababab` is received in the trailing metadata.
+* metadata with key `"x-grpc-test-echo-initial"` and value
+  `"test_initial_metadata_value"`is received in the initial metadata for calls
+  in Procedure steps 1 and 2.
+* metadata with key `"x-grpc-test-echo-trailing-bin"` and value `0xababab` is
+  received in the trailing metadata for calls in Procedure steps 1 and 2.
 
 
 
 ### status_code_and_message
 
-This test verifies unary calls succeed in sending messages, and propagates back
+This test verifies unary calls succeed in sending messages, and propagate back
 status code and message sent along with the messages.
 
 Server features:
@@ -543,12 +576,26 @@ Procedure:
       }
     }
     ```
-2. Client repeats step 1. with FullDuplexCall instead of UnaryCall.
 
+ 2. Client calls FullDuplexCall with:
+
+    ```
+    {
+      response_status:{
+        code: 2
+        message: "test status message"
+      }
+    }
+    ```
+
+    and then half-closes
 
-Asserts:
-* received status code is the same with sent code
-* received status message is the same with sent message
+
+Client asserts:
+* received status code is the same as the sent code for both Procedure steps 1
+  and 2
+* received status message is the same as the sent message for both Procedure
+  steps 1 and 2
 
 ### unimplemented_method
 
@@ -556,15 +603,19 @@ Status: Ready for implementation. Blocking beta.
 
 This test verifies calling unimplemented RPC method returns the UNIMPLEMENTED status code.
 
+Server features:
+N/A
+
 Procedure:
-* Client calls `grpc.testing.UnimplementedService/UnimplementedCall` with an empty request (defined as `grpc.testing.Empty`):
+* Client calls `grpc.testing.UnimplementedService/UnimplementedCall` with an
+  empty request (defined as `grpc.testing.Empty`):
 
     ```
     {
     }
     ```
 
-Asserts:
+Client asserts:
 * received status code is 12 (UNIMPLEMENTED)
 * received status message is empty or null/unset
 
@@ -580,7 +631,7 @@ Procedure:
  1. Client starts StreamingInputCall
  2. Client immediately cancels request
 
-Asserts:
+Client asserts:
 * Call completed with status CANCELLED
 
 ### cancel_after_first_response
@@ -606,9 +657,10 @@ Procedure:
       }
     }
     ```
+
  2. After receiving a response, client cancels request
 
-Asserts:
+Client asserts:
 * Call completed with status CANCELLED
 
 ### timeout_on_sleeping_server
@@ -620,7 +672,8 @@ Server features:
 * [FullDuplexCall][]
 
 Procedure:
- 1. Client calls FullDuplexCall with the following request and sets its timeout to 1ms.
+ 1. Client calls FullDuplexCall with the following request and sets its timeout
+    to 1ms
 
     ```
     {
@@ -630,7 +683,9 @@ Procedure:
     }
     ```
 
-Asserts:
+ 2. Client waits
+
+Client asserts:
 * Call completed with status DEADLINE_EXCEEDED.
 
 ### concurrent_large_unary
diff --git a/include/grpc++/channel_interface.h b/include/grpc++/channel_interface.h
index 10fb9538bcd5f16f3d4b839980330f2c8a5cec0d..4176cded7b6baf7448e9ca6a857eba88c7905368 100644
--- a/include/grpc++/channel_interface.h
+++ b/include/grpc++/channel_interface.h
@@ -36,6 +36,7 @@
 
 #include <memory>
 
+#include <grpc/grpc.h>
 #include <grpc++/status.h>
 #include <grpc++/impl/call.h>
 
@@ -47,7 +48,6 @@ class CallOpBuffer;
 class ClientContext;
 class CompletionQueue;
 class RpcMethod;
-class CallInterface;
 
 class ChannelInterface : public CallHook,
                          public std::enable_shared_from_this<ChannelInterface> {
@@ -57,6 +57,34 @@ class ChannelInterface : public CallHook,
   virtual void* RegisterMethod(const char* method_name) = 0;
   virtual Call CreateCall(const RpcMethod& method, ClientContext* context,
                           CompletionQueue* cq) = 0;
+
+  // Get the current channel state. If the channel is in IDLE and try_to_connect
+  // is set to true, try to connect.
+  virtual grpc_connectivity_state GetState(bool try_to_connect) = 0;
+
+  // Return the tag on cq when the channel state is changed or deadline expires.
+  // GetState needs to called to get the current state.
+  template <typename T>
+  void NotifyOnStateChange(grpc_connectivity_state last_observed, T deadline,
+                           CompletionQueue* cq, void* tag) {
+    TimePoint<T> deadline_tp(deadline);
+    NotifyOnStateChangeImpl(last_observed, deadline_tp.raw_time(), cq, tag);
+  }
+
+  // Blocking wait for channel state change or deadline expiration.
+  // GetState needs to called to get the current state.
+  template <typename T>
+  bool WaitForStateChange(grpc_connectivity_state last_observed, T deadline) {
+    TimePoint<T> deadline_tp(deadline);
+    return WaitForStateChangeImpl(last_observed, deadline_tp.raw_time());
+  }
+
+ private:
+  virtual void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                                       gpr_timespec deadline,
+                                       CompletionQueue* cq, void* tag) = 0;
+  virtual bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                                      gpr_timespec deadline) = 0;
 };
 
 }  // namespace grpc
diff --git a/include/grpc++/stream.h b/include/grpc++/stream.h
index 3903f2ec06c9337c2b3c75877dde03630c135f27..bc0c3c0f3b21a5d54ca6e8ceda9e67e8a3b7af16 100644
--- a/include/grpc++/stream.h
+++ b/include/grpc++/stream.h
@@ -54,7 +54,11 @@ class ClientStreamingInterface {
   // client side declares it has no more message to send, either implicitly or
   // by calling WritesDone, it needs to make sure there is no more message to
   // be received from the server, either implicitly or by getting a false from
-  // a Read(). Otherwise, this implicitly cancels the stream.
+  // a Read().
+  // This function will return either:
+  // - when all incoming messages have been read and the server has returned
+  //   status
+  // - OR when the server has returned a non-OK status
   virtual Status Finish() = 0;
 };
 
diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index 2ee260b799168afacdce627542b42b4d5c177800..a293c93ec64b6fe361c811c8605b2176440b6ab1 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -401,6 +401,7 @@ static void perform_transport_stream_op(grpc_call_element *elem,
             calld->state = CALL_WAITING_FOR_CONFIG;
             add_to_lb_policy_wait_queue_locked_state_config(elem);
             if (!chand->started_resolving && chand->resolver != NULL) {
+              GRPC_CHANNEL_INTERNAL_REF(chand->master, "resolver");
               chand->started_resolving = 1;
               grpc_resolver_next(chand->resolver,
                                  &chand->incoming_configuration,
@@ -701,11 +702,11 @@ void grpc_client_channel_set_resolver(grpc_channel_stack *channel_stack,
   gpr_mu_lock(&chand->mu_config);
   GPR_ASSERT(!chand->resolver);
   chand->resolver = resolver;
-  GRPC_CHANNEL_INTERNAL_REF(chand->master, "resolver");
   GRPC_RESOLVER_REF(resolver, "channel");
   if (chand->waiting_for_config_closures != NULL ||
       chand->exit_idle_when_lb_policy_arrives) {
     chand->started_resolving = 1;
+    GRPC_CHANNEL_INTERNAL_REF(chand->master, "resolver");
     grpc_resolver_next(resolver, &chand->incoming_configuration,
                        &chand->on_config_changed);
   }
@@ -724,6 +725,7 @@ grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     } else {
       chand->exit_idle_when_lb_policy_arrives = 1;
       if (!chand->started_resolving && chand->resolver != NULL) {
+        GRPC_CHANNEL_INTERNAL_REF(chand->master, "resolver");
         chand->started_resolving = 1;
         grpc_resolver_next(chand->resolver, &chand->incoming_configuration,
                            &chand->on_config_changed);
diff --git a/src/cpp/client/channel.cc b/src/cpp/client/channel.cc
index 5f54e7fcc17cec716733eec7a954058e977661cb..af7366eb01cab2ec974a92a1c2a8c3d94e4cf30b 100644
--- a/src/cpp/client/channel.cc
+++ b/src/cpp/client/channel.cc
@@ -48,6 +48,7 @@
 #include <grpc++/impl/call.h>
 #include <grpc++/impl/rpc_method.h>
 #include <grpc++/status.h>
+#include <grpc++/time.h>
 
 namespace grpc {
 
@@ -95,4 +96,43 @@ void* Channel::RegisterMethod(const char* method) {
                                     host_.empty() ? NULL : host_.c_str());
 }
 
+grpc_connectivity_state Channel::GetState(bool try_to_connect) {
+  return grpc_channel_check_connectivity_state(c_channel_, try_to_connect);
+}
+
+namespace {
+class TagSaver GRPC_FINAL : public CompletionQueueTag {
+ public:
+  explicit TagSaver(void* tag) : tag_(tag) {}
+  ~TagSaver() GRPC_OVERRIDE {}
+  bool FinalizeResult(void** tag, bool* status) GRPC_OVERRIDE {
+    *tag = tag_;
+    delete this;
+    return true;
+  }
+ private:
+  void* tag_;
+};
+
+}  // namespace
+
+void Channel::NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                                      gpr_timespec deadline,
+                                      CompletionQueue* cq, void* tag) {
+  TagSaver* tag_saver = new TagSaver(tag);
+  grpc_channel_watch_connectivity_state(c_channel_, last_observed, deadline,
+                                        cq->cq(), tag_saver);
+}
+
+bool Channel::WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                                     gpr_timespec deadline) {
+  CompletionQueue cq;
+  bool ok = false;
+  void* tag = NULL;
+  NotifyOnStateChangeImpl(last_observed, deadline, &cq, NULL);
+  cq.Next(&tag, &ok);
+  GPR_ASSERT(tag == NULL);
+  return ok;
+}
+
 }  // namespace grpc
diff --git a/src/cpp/client/channel.h b/src/cpp/client/channel.h
index 8660146856cc951e0c056d69b637bbb4b5058bc0..cb8e8d98d22549e868f3ce42e1e4a2c008f0ce55 100644
--- a/src/cpp/client/channel.h
+++ b/src/cpp/client/channel.h
@@ -56,13 +56,22 @@ class Channel GRPC_FINAL : public GrpcLibrary, public ChannelInterface {
   Channel(const grpc::string& host, grpc_channel* c_channel);
   ~Channel() GRPC_OVERRIDE;
 
-  virtual void* RegisterMethod(const char* method) GRPC_OVERRIDE;
-  virtual Call CreateCall(const RpcMethod& method, ClientContext* context,
+  void* RegisterMethod(const char* method) GRPC_OVERRIDE;
+  Call CreateCall(const RpcMethod& method, ClientContext* context,
                           CompletionQueue* cq) GRPC_OVERRIDE;
-  virtual void PerformOpsOnCall(CallOpSetInterface* ops,
+  void PerformOpsOnCall(CallOpSetInterface* ops,
                                 Call* call) GRPC_OVERRIDE;
 
+  grpc_connectivity_state GetState(bool try_to_connect) GRPC_OVERRIDE;
+
  private:
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline, CompletionQueue* cq,
+                               void* tag) GRPC_OVERRIDE;
+
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) GRPC_OVERRIDE;
+
   const grpc::string host_;
   grpc_channel* const c_channel_;  // owned
 };
diff --git a/src/objective-c/GRPCClient/GRPCCall+Tests.h b/src/objective-c/GRPCClient/GRPCCall+Tests.h
index 3d617b05d99df786e451589adaf96bbc7a45b922..cca161460632cd694b55851a2c96c8a0a0815bbb 100644
--- a/src/objective-c/GRPCClient/GRPCCall+Tests.h
+++ b/src/objective-c/GRPCClient/GRPCCall+Tests.h
@@ -33,13 +33,22 @@
 
 #import "GRPCCall.h"
 
+// Methods to let tune down the security of gRPC connections for specific hosts. These shouldn't be
+// used in releases, but are sometimes needed for testing.
 @interface GRPCCall (Tests)
 
 // Establish all SSL connections to the provided host using the passed SSL target name and the root
 // certificates found in the file at |certsPath|.
-// Must be called before any gRPC call to that host is made.
+//
+// Must be called before any gRPC call to that host is made. It's illegal to pass the same host to
+// more than one invocation of the methods of this category.
 + (void)useTestCertsPath:(NSString *)certsPath
                 testName:(NSString *)testName
                  forHost:(NSString *)host;
 
+// Establish all connections to the provided host using cleartext instead of SSL.
+//
+// Must be called before any gRPC call to that host is made. It's illegal to pass the same host to
+// more than one invocation of the methods of this category.
++ (void)useInsecureConnectionsForHost:(NSString *)host;
 @end
diff --git a/src/objective-c/GRPCClient/GRPCCall+Tests.m b/src/objective-c/GRPCClient/GRPCCall+Tests.m
index 7c5b81d661d756b9cbb654285a6145d0bf7608ba..bade0b29208249f043cd58448a94203581f9aac8 100644
--- a/src/objective-c/GRPCClient/GRPCCall+Tests.m
+++ b/src/objective-c/GRPCClient/GRPCCall+Tests.m
@@ -36,12 +36,18 @@
 #import "private/GRPCHost.h"
 
 @implementation GRPCCall (Tests)
+
 + (void)useTestCertsPath:(NSString *)certsPath
                 testName:(NSString *)testName
                  forHost:(NSString *)host {
   GRPCHost *hostConfig = [GRPCHost hostWithAddress:host];
-  hostConfig.secure = YES;
   hostConfig.pathToCertificates = certsPath;
   hostConfig.hostNameOverride = testName;
 }
+
++ (void)useInsecureConnectionsForHost:(NSString *)host {
+  GRPCHost *hostConfig = [GRPCHost hostWithAddress:host];
+  hostConfig.secure = NO;
+}
+
 @end
diff --git a/src/objective-c/GRPCClient/private/GRPCHost.m b/src/objective-c/GRPCClient/private/GRPCHost.m
index 5d9c48a52450e3de4ce48b3909407156a5a7c39c..6636c48620230bccb8bedca5855c0fe318eef129 100644
--- a/src/objective-c/GRPCClient/private/GRPCHost.m
+++ b/src/objective-c/GRPCClient/private/GRPCHost.m
@@ -58,22 +58,14 @@
 // Default initializer.
 - (instancetype)initWithAddress:(NSString *)address {
 
-  // Verify and normalize the address, and decide whether to use SSL.
-  if (![address rangeOfString:@"://"].length) {
-    // No scheme provided; assume https.
-    address = [@"https://" stringByAppendingString:address];
+  // To provide a default port, we try to interpret the address. If it's just a host name without
+  // scheme and without port, we'll use port 443. If it has a scheme, we pass it untouched to the C
+  // gRPC library.
+  // TODO(jcanizales): Add unit tests for the types of addresses we want to let pass untouched.
+  NSURL *hostURL = [NSURL URLWithString:[@"https://" stringByAppendingString:address]];
+  if (hostURL && !hostURL.port) {
+    address = [hostURL.host stringByAppendingString:@":443"];
   }
-  NSURL *hostURL = [NSURL URLWithString:address];
-  if (!hostURL) {
-    [NSException raise:NSInvalidArgumentException format:@"Invalid URL: %@", address];
-  }
-  NSString *scheme = hostURL.scheme;
-  if (![scheme isEqualToString:@"https"] && ![scheme isEqualToString:@"http"]) {
-    [NSException raise:NSInvalidArgumentException format:@"URL scheme %@ isn't supported.", scheme];
-  }
-  // If the user didn't specify a port (hostURL.port is nil), provide a default one.
-  NSNumber *port = hostURL.port ?: [scheme isEqualToString:@"https"] ? @443 : @80;
-  address = [@[hostURL.host, port] componentsJoinedByString:@":"];
 
   // Look up the GRPCHost in the cache.
   static NSMutableDictionary *hostCache;
@@ -84,19 +76,15 @@
   @synchronized(hostCache) {
     GRPCHost *cachedHost = hostCache[address];
     if (cachedHost) {
-      // We could verify here that the cached host uses the same protocol that we're expecting. But
-      // creating non-SSL channels by adding "http://" to the address is going away (to make the use
-      // of insecure channels less subtle), so it's not worth it now.
       return cachedHost;
     }
 
-    if ((self = [super init])) {
-      _address = address;
-      _secure = [scheme isEqualToString:@"https"];
-      hostCache[address] = self;
-    }
-    return self;
+  if ((self = [super init])) {
+    _address = address;
+    _secure = YES;
+    hostCache[address] = self;
   }
+  return self;
 }
 
 - (grpc_call *)unmanagedCallWithPath:(NSString *)path completionQueue:(GRPCCompletionQueue *)queue {
@@ -131,4 +119,7 @@
   return _hostNameOverride ?: _address;
 }
 
+// TODO(jcanizales): Don't let set |secure| to |NO| if |pathToCertificates| or |hostNameOverride|
+// have been set. Don't let set either of the latter if |secure| has been set to |NO|.
+
 @end
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index 103e5ca3d496b3ce7729fa679524def0ed990ce8..e5d7e43ed92e61f9b19ac59b4b10d257b3dcf7d9 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -35,6 +35,7 @@
 #import <XCTest/XCTest.h>
 
 #import <GRPCClient/GRPCCall.h>
+#import <GRPCClient/GRPCCall+Tests.h>
 #import <ProtoRPC/ProtoMethod.h>
 #import <RemoteTest/Messages.pbobjc.h>
 #import <RxLibrary/GRXWriteable.h>
@@ -43,8 +44,7 @@
 // These are a few tests similar to InteropTests, but which use the generic gRPC client (GRPCCall)
 // rather than a generated proto library on top of it.
 
-// grpc-test.sandbox.google.com
-static NSString * const kHostAddress = @"http://localhost:5050";
+static NSString * const kHostAddress = @"localhost:5050";
 static NSString * const kPackage = @"grpc.testing";
 static NSString * const kService = @"TestService";
 
@@ -58,6 +58,9 @@ static ProtoMethod *kUnaryCallMethod;
 @implementation GRPCClientTests
 
 - (void)setUp {
+  // Register test server as non-SSL.
+  [GRPCCall useInsecureConnectionsForHost:kHostAddress];
+
   // This method isn't implemented by the remote server.
   kInexistentMethod = [[ProtoMethod alloc] initWithPackage:kPackage
                                                    service:kService
diff --git a/src/objective-c/tests/InteropTests.h b/src/objective-c/tests/InteropTests.h
index c675c8d2410898f2efd78f652d5d888734a7f018..4eb97e9e06ee5f3633395f5d17df327d5d8c67b2 100644
--- a/src/objective-c/tests/InteropTests.h
+++ b/src/objective-c/tests/InteropTests.h
@@ -37,7 +37,7 @@
 // https://github.com/grpc/grpc/blob/master/doc/interop-test-descriptions.md
 
 @interface InteropTests : XCTestCase
-// Returns @"http://localhost:5050".
+// Returns @"localhost:5050".
 // Override in a subclass to perform the same tests against a different address.
 // For interop tests, use @"grpc-test.sandbox.google.com".
 + (NSString *)host;
diff --git a/src/objective-c/tests/InteropTests.m b/src/objective-c/tests/InteropTests.m
index a6611d27be673baacb51d7769575e73baabfd022..b61d5674649af6997fd25d8e39d098fcf1a10c3c 100644
--- a/src/objective-c/tests/InteropTests.m
+++ b/src/objective-c/tests/InteropTests.m
@@ -35,6 +35,7 @@
 
 #include <grpc/status.h>
 
+#import <GRPCClient/GRPCCall+Tests.h>
 #import <ProtoRPC/ProtoRPC.h>
 #import <RemoteTest/Empty.pbobjc.h>
 #import <RemoteTest/Messages.pbobjc.h>
@@ -75,15 +76,22 @@
 }
 @end
 
+#pragma mark Tests
+
+static NSString * const kLocalCleartextHost = @"localhost:5050";
+
 @implementation InteropTests {
   RMTTestService *_service;
 }
 
 + (NSString *)host {
-  return @"http://localhost:5050";
+  return kLocalCleartextHost;
 }
 
 - (void)setUp {
+  // Register test server as non-SSL.
+  [GRPCCall useInsecureConnectionsForHost:kLocalCleartextHost];
+
   _service = [[RMTTestService alloc] initWithHost:self.class.host];
 }
 
diff --git a/templates/tools/run_tests/tests.json.template b/templates/tools/run_tests/tests.json.template
index d1ba5ed43ca328d35fc039eab81a6fcb831eaf1a..ffbf843235f56226204999f9c7192c93e57c674c 100644
--- a/templates/tools/run_tests/tests.json.template
+++ b/templates/tools/run_tests/tests.json.template
@@ -5,8 +5,8 @@ import json
 ${json.dumps([{"name": tgt.name,
                "language": tgt.language,
                "platforms": tgt.platforms,
+               "ci_platforms": tgt.ci_platforms,
                "flaky": tgt.flaky}
               for tgt in targets
               if tgt.get('run', True) and tgt.build == 'test'],
              sort_keys=True, indent=2)}
-
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_proxy.c b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_proxy.c
index 46a64de6c506722fcaf347e80c3e3f3b7eaedc49..4d77039cac1ea920745114546b7e83efea6ce182 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_proxy.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_proxy.c
@@ -96,6 +96,14 @@ static grpc_end2end_test_fixture chttp2_create_fixture_secure_fullstack(
   return f;
 }
 
+static void process_auth_failure(void *state, grpc_auth_context *ctx,
+                                 const grpc_metadata *md, size_t md_count,
+                                 grpc_process_auth_metadata_done_cb cb,
+                                 void *user_data) {
+  GPR_ASSERT(state == NULL);
+  cb(user_data, NULL, 0, 0);
+}
+
 static void chttp2_init_client_secure_fullstack(grpc_end2end_test_fixture *f,
                                                 grpc_channel_args *client_args,
                                                 grpc_credentials *creds) {
@@ -139,12 +147,28 @@ static void chttp2_init_client_simple_ssl_secure_fullstack(
   grpc_channel_args_destroy(new_client_args);
 }
 
+static int fail_server_auth_check(grpc_channel_args *server_args) {
+  size_t i;
+  if (server_args == NULL) return 0;
+  for (i = 0; i < server_args->num_args; i++) {
+    if (strcmp(server_args->args[i].key, FAIL_AUTH_CHECK_SERVER_ARG_NAME) ==
+        0) {
+      return 1;
+    }
+  }
+  return 0;
+}
+
 static void chttp2_init_server_simple_ssl_secure_fullstack(
     grpc_end2end_test_fixture *f, grpc_channel_args *server_args) {
   grpc_ssl_pem_key_cert_pair pem_cert_key_pair = {test_server1_key,
                                                   test_server1_cert};
   grpc_server_credentials *ssl_creds =
       grpc_ssl_server_credentials_create(NULL, &pem_cert_key_pair, 1, 0);
+  if (fail_server_auth_check(server_args)) {
+    grpc_auth_metadata_processor processor = {process_auth_failure, NULL};
+    grpc_server_credentials_set_auth_metadata_processor(ssl_creds, processor);
+  }
   chttp2_init_server_secure_fullstack(f, server_args, ssl_creds);
 }
 
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
index 6d2361b783a1a23463919e1e949141fd8392d8e2..9d798ad1d20e63b4e4c7a3e1daf9146c8d98c2f0 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
@@ -148,7 +148,11 @@ int main(int argc, char **argv) {
   /* force tracing on, with a value to force many
      code paths in trace.c to be taken */
   gpr_setenv("GRPC_TRACE", "doesnt-exist,http,all");
+#ifdef GPR_POSIX_SOCKET
+  g_fixture_slowdown_factor = isatty(STDOUT_FILENO) ? 10.0 : 1.0;
+#else
   g_fixture_slowdown_factor = 10.0;
+#endif
 
   grpc_test_init(argc, argv);
   grpc_init();
diff --git a/test/core/end2end/gen_build_json.py b/test/core/end2end/gen_build_json.py
index d1138abd78437ca0fbf04de826aedc1a82bc65b4..6f10b78dad460f843251e13d91d0220f0d976e98 100755
--- a/test/core/end2end/gen_build_json.py
+++ b/test/core/end2end/gen_build_json.py
@@ -36,27 +36,27 @@ import simplejson
 import collections
 
 
-FixtureOptions = collections.namedtuple('FixtureOptions', 'fullstack includes_proxy dns_resolver secure platforms')
-default_unsecure_fixture_options = FixtureOptions(True, False, True, False, ['windows', 'linux', 'mac', 'posix'])
+FixtureOptions = collections.namedtuple('FixtureOptions', 'fullstack includes_proxy dns_resolver secure platforms ci_mac')
+default_unsecure_fixture_options = FixtureOptions(True, False, True, False, ['windows', 'linux', 'mac', 'posix'], True)
 socketpair_unsecure_fixture_options = default_unsecure_fixture_options._replace(fullstack=False, dns_resolver=False)
 default_secure_fixture_options = default_unsecure_fixture_options._replace(secure=True)
 uds_fixture_options = default_unsecure_fixture_options._replace(dns_resolver=False, platforms=['linux', 'mac', 'posix'])
 
 # maps fixture name to whether it requires the security library
 END2END_FIXTURES = {
-    'chttp2_fake_security': default_secure_fixture_options,
+    'chttp2_fake_security': default_secure_fixture_options._replace(ci_mac=False),
     'chttp2_fullstack': default_unsecure_fixture_options,
     'chttp2_fullstack_compression': default_unsecure_fixture_options,
     'chttp2_fullstack_uds_posix': uds_fixture_options,
     'chttp2_fullstack_uds_posix_with_poll': uds_fixture_options._replace(platforms=['linux']),
     'chttp2_fullstack_with_poll': default_unsecure_fixture_options._replace(platforms=['linux']),
-    'chttp2_fullstack_with_proxy': default_unsecure_fixture_options._replace(includes_proxy=True),
+    'chttp2_fullstack_with_proxy': default_unsecure_fixture_options._replace(includes_proxy=True, ci_mac=False),
     'chttp2_simple_ssl_fullstack': default_secure_fixture_options,
     'chttp2_simple_ssl_fullstack_with_poll': default_secure_fixture_options._replace(platforms=['linux']),
-    'chttp2_simple_ssl_fullstack_with_proxy': default_secure_fixture_options._replace(includes_proxy=True),
-    'chttp2_simple_ssl_with_oauth2_fullstack': default_secure_fixture_options,
-    'chttp2_socket_pair': socketpair_unsecure_fixture_options,
-    'chttp2_socket_pair_one_byte_at_a_time': socketpair_unsecure_fixture_options,
+    'chttp2_simple_ssl_fullstack_with_proxy': default_secure_fixture_options._replace(includes_proxy=True, ci_mac=False),
+    'chttp2_simple_ssl_with_oauth2_fullstack': default_secure_fixture_options._replace(ci_mac=False),
+    'chttp2_socket_pair': socketpair_unsecure_fixture_options._replace(ci_mac=False),
+    'chttp2_socket_pair_one_byte_at_a_time': socketpair_unsecure_fixture_options._replace(ci_mac=False),
     'chttp2_socket_pair_with_grpc_trace': socketpair_unsecure_fixture_options,
 }
 
@@ -115,6 +115,12 @@ def compatible(f, t):
   return True
 
 
+def without(l, e):
+  l = l[:]
+  l.remove(e)
+  return l
+
+
 def main():
   sec_deps = [
     'end2end_certs',
@@ -173,6 +179,9 @@ def main():
               'src': [],
               'flaky': END2END_TESTS[t].flaky,
               'platforms': END2END_FIXTURES[f].platforms,
+              'ci_platforms': (END2END_FIXTURES[f].platforms 
+                               if END2END_FIXTURES[f].ci_mac 
+                               else without(END2END_FIXTURES[f].platforms, 'mac')),
               'deps': [
                   'end2end_fixture_%s' % f,
                   'end2end_test_%s' % t] + sec_deps
@@ -188,6 +197,9 @@ def main():
               'src': [],
               'flaky': END2END_TESTS[t].flaky,
               'platforms': END2END_FIXTURES[f].platforms,
+              'ci_platforms': (END2END_FIXTURES[f].platforms 
+                               if END2END_FIXTURES[f].ci_mac 
+                               else without(END2END_FIXTURES[f].platforms, 'mac')),
               'deps': [
                   'end2end_fixture_%s' % f,
                   'end2end_test_%s' % t] + unsec_deps
diff --git a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
index 0ea7b30fc5549b1b792afb11a0ca8c30d9833d76..342dfa03f6baf9a34c4c5fc6dd81234c88b7997f 100644
--- a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
+++ b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
@@ -400,8 +400,8 @@ static void test_request_with_server_rejecting_client_creds(
   f = begin_test(config, "test_request_with_server_rejecting_client_creds", 1);
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
-                               deadline);
+  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+                               "/foo", "foo.test.google.fr", deadline);
   GPR_ASSERT(c);
 
   creds = grpc_iam_credentials_create(iam_token, iam_selector);
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 24d417d9e65469a1eec57359c16fe479bb26874e..5f0749daa5c1b1d7e07181a513ff98af8da1abf4 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -869,7 +869,8 @@ TEST_P(End2endTest, HugeResponse) {
 }
 
 namespace {
-void ReaderThreadFunc(ClientReaderWriter<EchoRequest, EchoResponse>* stream, gpr_event *ev) {
+void ReaderThreadFunc(ClientReaderWriter<EchoRequest, EchoResponse>* stream,
+                      gpr_event *ev) {
   EchoResponse resp;
   gpr_event_set(ev, (void*)1);
   while (stream->Read(&resp)) {
@@ -908,6 +909,27 @@ TEST_P(End2endTest, Peer) {
   EXPECT_TRUE(CheckIsLocalhost(context.peer()));
 }
 
+TEST_F(End2endTest, ChannelState) {
+  ResetStub(false);
+  // Start IDLE
+  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(false));
+
+  // Did not ask to connect, no state change.
+  CompletionQueue cq;
+  std::chrono::system_clock::time_point deadline =
+      std::chrono::system_clock::now() + std::chrono::milliseconds(10);
+  channel_->NotifyOnStateChange(GRPC_CHANNEL_IDLE, deadline, &cq, NULL);
+  void* tag;
+  bool ok = true;
+  cq.Next(&tag, &ok);
+  EXPECT_FALSE(ok);
+
+  EXPECT_EQ(GRPC_CHANNEL_IDLE, channel_->GetState(true));
+  EXPECT_TRUE(channel_->WaitForStateChange(
+      GRPC_CHANNEL_IDLE, gpr_inf_future(GPR_CLOCK_REALTIME)));
+  EXPECT_EQ(GRPC_CHANNEL_CONNECTING, channel_->GetState(false));
+}
+
 INSTANTIATE_TEST_CASE_P(End2end, End2endTest, ::testing::Values(false, true));
 
 }  // namespace testing
diff --git a/tools/buildgen/plugins/expand_bin_attrs.py b/tools/buildgen/plugins/expand_bin_attrs.py
index 9c6c31e9a39e2a7de10a82c0a45451e82927d1bc..d221b3a325bf7118b5a3857937be27fce8875f37 100755
--- a/tools/buildgen/plugins/expand_bin_attrs.py
+++ b/tools/buildgen/plugins/expand_bin_attrs.py
@@ -44,8 +44,9 @@ def mako_plugin(dictionary):
   """
 
   targets = dictionary.get('targets')
+  default_platforms = ['windows', 'posix', 'linux', 'mac']
 
   for tgt in targets:
     tgt['flaky'] = tgt.get('flaky', False)
-    tgt['platforms'] = sorted(tgt.get('platforms', ['windows', 'posix']))
-
+    tgt['platforms'] = sorted(tgt.get('platforms', default_platforms))
+    tgt['ci_platforms'] = sorted(tgt.get('ci_platforms', tgt['platforms']))
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 482ffcc435df5c9a940d7a10d2a5f2af896dceb1..0d4caa66aaf169e3cbf9ea3f8d5dfdce39948f34 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -127,10 +127,14 @@ class CLanguage(object):
                        for tgt in js
                        if tgt['language'] == test_lang and
                           platform_string() in tgt['platforms']]
+      self.ci_binaries = [tgt
+                         for tgt in js
+                         if tgt['language'] == test_lang and
+                            platform_string() in tgt['ci_platforms']]
 
   def test_specs(self, config, travis):
     out = []
-    for target in self.binaries:
+    for target in (self.ci_binaries if travis else self.binaries):
       if travis and target['flaky']:
         continue
       if self.platform == 'windows':
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 019203642084a49aaa446a4e20e76c1549757f66..471dae0efa1be4131e3c6d00727a1f66db923417 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -2,78 +2,147 @@
 
 [
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "alarm_heap_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "alarm_list_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "alarm_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "alpn_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "bin_encoder_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_status_conversion_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_stream_encoder_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_stream_map_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "dualstack_socket_test", 
@@ -84,6 +153,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "fd_conservation_posix_test", 
@@ -94,6 +168,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "fd_posix_test", 
@@ -104,6 +183,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "fling_stream_test", 
@@ -114,6 +198,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "fling_test", 
@@ -124,276 +213,521 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_cancellable_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_cmdline_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_env_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_file_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_histogram_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_host_port_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_log_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_slice_buffer_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_slice_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_stack_lockfree_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_string_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_sync_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_thd_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_time_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_tls_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "gpr_useful_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_auth_context_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_base64_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_byte_buffer_reader_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_channel_stack_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_completion_queue_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_credentials_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_json_token_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_jwt_verifier_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_security_connector_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "grpc_stream_op_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "hpack_parser_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "hpack_table_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "httpcli_format_request_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "httpcli_parser_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "httpcli_test", 
@@ -404,105 +738,198 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "json_rewrite_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "json_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "lame_client_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "message_compress_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "multi_init_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "multiple_server_queues_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "murmur_hash_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "no_server_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "resolve_address_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "secure_endpoint_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "sockaddr_utils_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "tcp_client_posix_test", 
@@ -513,6 +940,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "tcp_posix_test", 
@@ -523,6 +955,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "tcp_server_posix_test", 
@@ -533,69 +970,130 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "time_averaged_stats_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "timeout_encoding_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "timers_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "transport_metadata_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "transport_security_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "uri_parser_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "async_end2end_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "async_streaming_ping_pong_test", 
@@ -606,6 +1104,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "async_unary_ping_pong_test", 
@@ -616,33 +1119,62 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "auth_property_iterator_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "channel_arguments_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "cli_call_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "client_crash_test", 
@@ -653,78 +1185,147 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "credentials_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "cxx_byte_buffer_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "cxx_slice_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "cxx_time_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "dynamic_thread_pool_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "end2end_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "fixed_size_thread_pool_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "generic_end2end_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "interop_test", 
@@ -735,15 +1336,28 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "mock_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "qps_openloop_test", 
@@ -754,6 +1368,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "qps_test", 
@@ -764,15 +1383,28 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "secure_auth_context_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "server_crash_test", 
@@ -783,15 +1415,28 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "status_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "sync_streaming_ping_pong_test", 
@@ -802,6 +1447,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "sync_unary_ping_pong_test", 
@@ -812,15 +1462,28 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c++", 
     "name": "thread_stress_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_bad_hostname_test", 
@@ -832,6 +1495,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_cancel_after_accept_test", 
@@ -843,6 +1511,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_cancel_after_accept_and_writes_closed_test", 
@@ -854,6 +1527,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_cancel_after_invoke_test", 
@@ -865,6 +1543,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_cancel_before_invoke_test", 
@@ -876,6 +1559,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_cancel_in_a_vacuum_test", 
@@ -887,6 +1575,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_census_simple_request_test", 
@@ -898,6 +1591,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_channel_connectivity_test", 
@@ -909,6 +1607,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_default_host_test", 
@@ -920,6 +1623,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_disappearing_server_test", 
@@ -931,6 +1639,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test", 
@@ -942,6 +1655,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_early_server_shutdown_finishes_tags_test", 
@@ -953,6 +1671,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_empty_batch_test", 
@@ -964,6 +1687,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_graceful_server_shutdown_test", 
@@ -975,6 +1703,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_invoke_large_request_test", 
@@ -986,6 +1719,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_max_concurrent_streams_test", 
@@ -997,6 +1735,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_max_message_length_test", 
@@ -1008,6 +1751,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_no_op_test", 
@@ -1019,6 +1767,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_ping_pong_streaming_test", 
@@ -1030,6 +1783,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_registered_call_test", 
@@ -1041,6 +1799,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_response_with_binary_metadata_and_payload_test", 
@@ -1052,6 +1815,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_response_with_metadata_and_payload_test", 
@@ -1063,6 +1831,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_response_with_payload_test", 
@@ -1074,6 +1847,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_response_with_payload_and_call_creds_test", 
@@ -1085,6 +1863,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test", 
@@ -1096,6 +1879,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_with_compressed_payload_test", 
@@ -1107,6 +1895,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_with_flags_test", 
@@ -1118,6 +1911,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_with_large_metadata_test", 
@@ -1129,6 +1927,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_request_with_payload_test", 
@@ -1140,6 +1943,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_server_finishes_request_test", 
@@ -1151,6 +1959,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_simple_delayed_request_test", 
@@ -1162,6 +1975,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_simple_request_test", 
@@ -1173,6 +1991,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fake_security_simple_request_with_high_initial_sequence_number_test", 
@@ -1184,6 +2007,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_bad_hostname_test", 
@@ -1195,6 +2024,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_accept_test", 
@@ -1206,6 +2041,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_accept_and_writes_closed_test", 
@@ -1217,6 +2058,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_invoke_test", 
@@ -1228,6 +2075,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_before_invoke_test", 
@@ -1239,6 +2092,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_in_a_vacuum_test", 
@@ -1250,6 +2109,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_census_simple_request_test", 
@@ -1261,6 +2126,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_channel_connectivity_test", 
@@ -1272,6 +2143,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_default_host_test", 
@@ -1283,6 +2160,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_disappearing_server_test", 
@@ -1294,6 +2177,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test", 
@@ -1305,6 +2194,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_early_server_shutdown_finishes_tags_test", 
@@ -1316,6 +2211,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_empty_batch_test", 
@@ -1327,6 +2228,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_graceful_server_shutdown_test", 
@@ -1338,6 +2245,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_invoke_large_request_test", 
@@ -1349,6 +2262,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_max_concurrent_streams_test", 
@@ -1360,6 +2279,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_max_message_length_test", 
@@ -1371,6 +2296,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_no_op_test", 
@@ -1382,6 +2313,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_ping_pong_streaming_test", 
@@ -1393,6 +2330,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_registered_call_test", 
@@ -1404,6 +2347,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_binary_metadata_and_payload_test", 
@@ -1415,6 +2364,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_metadata_and_payload_test", 
@@ -1426,6 +2381,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_payload_test", 
@@ -1437,6 +2398,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_payload_and_call_creds_test", 
@@ -1448,6 +2415,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test", 
@@ -1459,6 +2432,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_compressed_payload_test", 
@@ -1470,6 +2449,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_flags_test", 
@@ -1481,6 +2466,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_large_metadata_test", 
@@ -1492,6 +2483,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_payload_test", 
@@ -1503,6 +2500,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_server_finishes_request_test", 
@@ -1514,6 +2517,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_delayed_request_test", 
@@ -1525,6 +2534,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_request_test", 
@@ -1536,6 +2551,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_request_with_high_initial_sequence_number_test", 
@@ -1547,6 +2568,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_bad_hostname_test", 
@@ -1558,6 +2585,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_accept_test", 
@@ -1569,6 +2602,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_test", 
@@ -1580,6 +2619,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_invoke_test", 
@@ -1591,6 +2636,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_before_invoke_test", 
@@ -1602,6 +2653,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_in_a_vacuum_test", 
@@ -1613,6 +2670,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_census_simple_request_test", 
@@ -1624,6 +2687,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_channel_connectivity_test", 
@@ -1635,6 +2704,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_default_host_test", 
@@ -1646,6 +2721,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_disappearing_server_test", 
@@ -1657,6 +2738,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_test", 
@@ -1668,6 +2755,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_early_server_shutdown_finishes_tags_test", 
@@ -1679,6 +2772,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_empty_batch_test", 
@@ -1690,6 +2789,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_graceful_server_shutdown_test", 
@@ -1701,6 +2806,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_invoke_large_request_test", 
@@ -1712,6 +2823,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_max_concurrent_streams_test", 
@@ -1723,6 +2840,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_max_message_length_test", 
@@ -1734,6 +2857,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_no_op_test", 
@@ -1745,6 +2874,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_ping_pong_streaming_test", 
@@ -1756,6 +2891,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_registered_call_test", 
@@ -1767,6 +2908,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_test", 
@@ -1778,6 +2925,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_metadata_and_payload_test", 
@@ -1789,6 +2942,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_payload_test", 
@@ -1800,6 +2959,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_payload_and_call_creds_test", 
@@ -1811,6 +2976,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_test", 
@@ -1822,6 +2993,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_compressed_payload_test", 
@@ -1833,6 +3010,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_flags_test", 
@@ -1844,6 +3027,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_large_metadata_test", 
@@ -1855,6 +3044,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_payload_test", 
@@ -1866,6 +3061,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_server_finishes_request_test", 
@@ -1877,6 +3078,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_delayed_request_test", 
@@ -1888,6 +3095,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_request_test", 
@@ -1899,6 +3112,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_test", 
@@ -1910,6 +3129,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_bad_hostname_test", 
@@ -1920,6 +3144,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_accept_test", 
@@ -1930,6 +3159,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_test", 
@@ -1940,6 +3174,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_invoke_test", 
@@ -1950,6 +3189,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_before_invoke_test", 
@@ -1960,6 +3204,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_in_a_vacuum_test", 
@@ -1970,6 +3219,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_census_simple_request_test", 
@@ -1980,6 +3234,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_channel_connectivity_test", 
@@ -1990,6 +3249,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_disappearing_server_test", 
@@ -2000,6 +3264,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_test", 
@@ -2010,6 +3279,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_test", 
@@ -2020,6 +3294,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_empty_batch_test", 
@@ -2030,6 +3309,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_graceful_server_shutdown_test", 
@@ -2040,6 +3324,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_invoke_large_request_test", 
@@ -2050,6 +3339,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_max_concurrent_streams_test", 
@@ -2060,6 +3354,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_max_message_length_test", 
@@ -2070,6 +3369,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_no_op_test", 
@@ -2080,6 +3384,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_ping_pong_streaming_test", 
@@ -2090,6 +3399,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_registered_call_test", 
@@ -2100,6 +3414,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_test", 
@@ -2110,6 +3429,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_test", 
@@ -2120,6 +3444,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_payload_test", 
@@ -2130,6 +3459,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_payload_and_call_creds_test", 
@@ -2140,6 +3474,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_test", 
@@ -2150,6 +3489,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_compressed_payload_test", 
@@ -2160,6 +3504,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_flags_test", 
@@ -2170,6 +3519,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_large_metadata_test", 
@@ -2180,6 +3534,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_payload_test", 
@@ -2190,6 +3549,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_server_finishes_request_test", 
@@ -2200,6 +3564,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_delayed_request_test", 
@@ -2210,6 +3579,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_request_test", 
@@ -2220,6 +3594,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_test", 
@@ -2230,6 +3609,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_bad_hostname_test", 
@@ -2238,6 +3620,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_test", 
@@ -2246,6 +3631,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_and_writes_closed_test", 
@@ -2254,6 +3642,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_invoke_test", 
@@ -2262,6 +3653,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_before_invoke_test", 
@@ -2270,6 +3664,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_in_a_vacuum_test", 
@@ -2278,6 +3675,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_census_simple_request_test", 
@@ -2286,6 +3686,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_channel_connectivity_test", 
@@ -2294,6 +3697,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_disappearing_server_test", 
@@ -2302,6 +3708,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_inflight_calls_test", 
@@ -2310,6 +3719,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_tags_test", 
@@ -2318,6 +3730,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_empty_batch_test", 
@@ -2326,6 +3741,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_graceful_server_shutdown_test", 
@@ -2334,6 +3752,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_invoke_large_request_test", 
@@ -2342,6 +3763,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_max_concurrent_streams_test", 
@@ -2350,6 +3774,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_max_message_length_test", 
@@ -2358,6 +3785,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_no_op_test", 
@@ -2366,6 +3796,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_ping_pong_streaming_test", 
@@ -2374,6 +3807,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_registered_call_test", 
@@ -2382,6 +3818,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_binary_metadata_and_payload_test", 
@@ -2390,6 +3829,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_metadata_and_payload_test", 
@@ -2398,6 +3840,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_payload_test", 
@@ -2406,6 +3851,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_payload_and_call_creds_test", 
@@ -2414,6 +3862,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_trailing_metadata_and_payload_test", 
@@ -2422,6 +3873,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_compressed_payload_test", 
@@ -2430,6 +3884,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_flags_test", 
@@ -2438,6 +3895,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_large_metadata_test", 
@@ -2446,6 +3906,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_payload_test", 
@@ -2454,6 +3917,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_server_finishes_request_test", 
@@ -2462,6 +3928,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_delayed_request_test", 
@@ -2470,6 +3939,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_request_test", 
@@ -2478,6 +3950,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_request_with_high_initial_sequence_number_test", 
@@ -2486,6 +3961,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_bad_hostname_test", 
@@ -2494,6 +3972,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_accept_test", 
@@ -2502,6 +3983,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_test", 
@@ -2510,6 +3994,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_invoke_test", 
@@ -2518,6 +4005,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_before_invoke_test", 
@@ -2526,6 +4016,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_in_a_vacuum_test", 
@@ -2534,6 +4027,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_census_simple_request_test", 
@@ -2542,6 +4038,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_channel_connectivity_test", 
@@ -2550,6 +4049,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_default_host_test", 
@@ -2558,6 +4060,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_disappearing_server_test", 
@@ -2566,6 +4071,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test", 
@@ -2574,6 +4082,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_test", 
@@ -2582,6 +4093,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_empty_batch_test", 
@@ -2590,6 +4104,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_graceful_server_shutdown_test", 
@@ -2598,6 +4115,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_invoke_large_request_test", 
@@ -2606,6 +4126,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_max_concurrent_streams_test", 
@@ -2614,6 +4137,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_max_message_length_test", 
@@ -2622,6 +4148,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_no_op_test", 
@@ -2630,6 +4159,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_ping_pong_streaming_test", 
@@ -2638,6 +4170,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_registered_call_test", 
@@ -2646,6 +4181,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test", 
@@ -2654,6 +4192,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_test", 
@@ -2662,6 +4203,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_payload_test", 
@@ -2670,6 +4214,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_payload_and_call_creds_test", 
@@ -2678,6 +4225,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test", 
@@ -2686,6 +4236,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_compressed_payload_test", 
@@ -2694,6 +4247,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_flags_test", 
@@ -2702,6 +4258,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_large_metadata_test", 
@@ -2710,6 +4269,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_payload_test", 
@@ -2718,6 +4280,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_server_finishes_request_test", 
@@ -2726,6 +4291,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_delayed_request_test", 
@@ -2734,6 +4302,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_request_test", 
@@ -2742,6 +4313,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test", 
@@ -2750,6 +4324,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_bad_hostname_test", 
@@ -2761,6 +4340,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_accept_test", 
@@ -2772,6 +4356,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_accept_and_writes_closed_test", 
@@ -2783,6 +4372,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_invoke_test", 
@@ -2794,6 +4388,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_before_invoke_test", 
@@ -2805,6 +4404,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_in_a_vacuum_test", 
@@ -2816,6 +4420,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_census_simple_request_test", 
@@ -2827,6 +4436,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_default_host_test", 
@@ -2838,6 +4452,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_disappearing_server_test", 
@@ -2849,6 +4468,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_test", 
@@ -2860,6 +4484,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_early_server_shutdown_finishes_tags_test", 
@@ -2871,6 +4500,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_empty_batch_test", 
@@ -2882,6 +4516,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_graceful_server_shutdown_test", 
@@ -2893,6 +4532,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_invoke_large_request_test", 
@@ -2904,6 +4548,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_max_message_length_test", 
@@ -2915,6 +4564,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_no_op_test", 
@@ -2926,6 +4580,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_ping_pong_streaming_test", 
@@ -2937,6 +4596,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_registered_call_test", 
@@ -2948,6 +4612,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_test", 
@@ -2959,6 +4628,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_metadata_and_payload_test", 
@@ -2970,6 +4644,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_payload_test", 
@@ -2981,6 +4660,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_payload_and_call_creds_test", 
@@ -2992,6 +4676,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_test", 
@@ -3003,6 +4692,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_with_large_metadata_test", 
@@ -3014,6 +4708,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_with_payload_test", 
@@ -3025,6 +4724,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_server_finishes_request_test", 
@@ -3036,6 +4740,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_delayed_request_test", 
@@ -3047,6 +4756,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_request_test", 
@@ -3058,6 +4772,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_test", 
@@ -3069,6 +4788,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_bad_hostname_test", 
@@ -3080,6 +4805,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_cancel_after_accept_test", 
@@ -3091,6 +4822,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test", 
@@ -3102,6 +4839,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_cancel_after_invoke_test", 
@@ -3113,6 +4856,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_cancel_before_invoke_test", 
@@ -3124,6 +4873,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test", 
@@ -3135,6 +4890,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_census_simple_request_test", 
@@ -3146,6 +4907,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_channel_connectivity_test", 
@@ -3157,6 +4924,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_default_host_test", 
@@ -3168,6 +4941,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_disappearing_server_test", 
@@ -3179,6 +4958,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test", 
@@ -3190,6 +4975,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test", 
@@ -3201,6 +4992,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_empty_batch_test", 
@@ -3212,6 +5009,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_graceful_server_shutdown_test", 
@@ -3223,6 +5026,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_invoke_large_request_test", 
@@ -3234,6 +5043,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_max_concurrent_streams_test", 
@@ -3245,6 +5060,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_max_message_length_test", 
@@ -3256,6 +5077,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_no_op_test", 
@@ -3267,6 +5094,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_ping_pong_streaming_test", 
@@ -3278,6 +5111,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_registered_call_test", 
@@ -3289,6 +5128,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test", 
@@ -3300,6 +5145,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test", 
@@ -3311,6 +5162,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_response_with_payload_test", 
@@ -3322,6 +5179,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_response_with_payload_and_call_creds_test", 
@@ -3333,6 +5196,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_test", 
@@ -3344,6 +5213,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_with_compressed_payload_test", 
@@ -3355,6 +5230,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_with_flags_test", 
@@ -3366,6 +5247,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_with_large_metadata_test", 
@@ -3377,6 +5264,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_request_with_payload_test", 
@@ -3388,6 +5281,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_server_finishes_request_test", 
@@ -3399,6 +5298,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_simple_delayed_request_test", 
@@ -3410,6 +5315,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_simple_request_test", 
@@ -3421,6 +5332,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_simple_request_with_high_initial_sequence_number_test", 
@@ -3432,6 +5349,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_bad_hostname_test", 
@@ -3440,6 +5360,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_cancel_after_accept_test", 
@@ -3448,6 +5371,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_cancel_after_accept_and_writes_closed_test", 
@@ -3456,6 +5382,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_cancel_after_invoke_test", 
@@ -3464,6 +5393,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_cancel_before_invoke_test", 
@@ -3472,6 +5404,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_cancel_in_a_vacuum_test", 
@@ -3480,6 +5415,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_census_simple_request_test", 
@@ -3488,6 +5426,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_channel_connectivity_test", 
@@ -3496,6 +5437,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_default_host_test", 
@@ -3504,6 +5448,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_disappearing_server_test", 
@@ -3512,6 +5459,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test", 
@@ -3520,6 +5470,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_early_server_shutdown_finishes_tags_test", 
@@ -3528,6 +5481,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_empty_batch_test", 
@@ -3536,6 +5492,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_graceful_server_shutdown_test", 
@@ -3544,6 +5503,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_invoke_large_request_test", 
@@ -3552,6 +5514,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_max_concurrent_streams_test", 
@@ -3560,6 +5525,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_max_message_length_test", 
@@ -3568,6 +5536,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_no_op_test", 
@@ -3576,6 +5547,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_ping_pong_streaming_test", 
@@ -3584,6 +5558,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_registered_call_test", 
@@ -3592,6 +5569,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test", 
@@ -3600,6 +5580,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_response_with_metadata_and_payload_test", 
@@ -3608,6 +5591,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_response_with_payload_test", 
@@ -3616,6 +5602,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_response_with_payload_and_call_creds_test", 
@@ -3624,6 +5613,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test", 
@@ -3632,6 +5624,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_with_compressed_payload_test", 
@@ -3640,6 +5635,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_with_flags_test", 
@@ -3648,6 +5646,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_with_large_metadata_test", 
@@ -3656,6 +5657,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_request_with_payload_test", 
@@ -3664,6 +5668,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_server_finishes_request_test", 
@@ -3672,6 +5679,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_simple_delayed_request_test", 
@@ -3680,6 +5690,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_simple_request_test", 
@@ -3688,6 +5701,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test", 
@@ -3696,6 +5712,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_bad_hostname_test", 
@@ -3707,6 +5728,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_cancel_after_accept_test", 
@@ -3718,6 +5744,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_cancel_after_accept_and_writes_closed_test", 
@@ -3729,6 +5760,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_cancel_after_invoke_test", 
@@ -3740,6 +5776,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_cancel_before_invoke_test", 
@@ -3751,6 +5792,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_cancel_in_a_vacuum_test", 
@@ -3762,6 +5808,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_census_simple_request_test", 
@@ -3773,6 +5824,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_default_host_test", 
@@ -3784,6 +5840,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_disappearing_server_test", 
@@ -3795,6 +5856,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_test", 
@@ -3806,6 +5872,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_early_server_shutdown_finishes_tags_test", 
@@ -3817,6 +5888,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_empty_batch_test", 
@@ -3828,6 +5904,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_graceful_server_shutdown_test", 
@@ -3839,6 +5920,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_invoke_large_request_test", 
@@ -3850,6 +5936,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_max_message_length_test", 
@@ -3861,6 +5952,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_no_op_test", 
@@ -3872,6 +5968,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_ping_pong_streaming_test", 
@@ -3883,6 +5984,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_registered_call_test", 
@@ -3894,6 +6000,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_test", 
@@ -3905,6 +6016,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_response_with_metadata_and_payload_test", 
@@ -3916,6 +6032,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_response_with_payload_test", 
@@ -3927,6 +6048,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_response_with_payload_and_call_creds_test", 
@@ -3938,6 +6064,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_test", 
@@ -3949,6 +6080,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_with_large_metadata_test", 
@@ -3960,6 +6096,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_request_with_payload_test", 
@@ -3971,6 +6112,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_server_finishes_request_test", 
@@ -3982,6 +6128,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_simple_delayed_request_test", 
@@ -3993,6 +6144,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_simple_request_test", 
@@ -4004,6 +6160,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_test", 
@@ -4015,6 +6176,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_bad_hostname_test", 
@@ -4026,6 +6192,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test", 
@@ -4037,6 +6208,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test", 
@@ -4048,6 +6224,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test", 
@@ -4059,6 +6240,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test", 
@@ -4070,6 +6256,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test", 
@@ -4081,6 +6272,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test", 
@@ -4092,6 +6288,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_channel_connectivity_test", 
@@ -4103,6 +6304,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_default_host_test", 
@@ -4114,6 +6320,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test", 
@@ -4125,6 +6336,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test", 
@@ -4136,6 +6352,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test", 
@@ -4147,6 +6368,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test", 
@@ -4158,6 +6384,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test", 
@@ -4169,6 +6400,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test", 
@@ -4180,6 +6416,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test", 
@@ -4191,6 +6432,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_max_message_length_test", 
@@ -4202,6 +6448,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_no_op_test", 
@@ -4213,6 +6464,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test", 
@@ -4224,6 +6480,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_registered_call_test", 
@@ -4235,6 +6496,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test", 
@@ -4246,6 +6512,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test", 
@@ -4257,6 +6528,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test", 
@@ -4268,6 +6544,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_and_call_creds_test", 
@@ -4279,6 +6560,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_test", 
@@ -4290,6 +6576,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_with_compressed_payload_test", 
@@ -4301,6 +6592,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_with_flags_test", 
@@ -4312,6 +6608,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test", 
@@ -4323,6 +6624,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test", 
@@ -4334,6 +6640,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_server_finishes_request_test", 
@@ -4345,6 +6656,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test", 
@@ -4356,6 +6672,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test", 
@@ -4367,6 +6688,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_simple_request_with_high_initial_sequence_number_test", 
@@ -4378,6 +6704,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_bad_hostname_test", 
@@ -4389,6 +6720,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_accept_test", 
@@ -4400,6 +6736,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_accept_and_writes_closed_test", 
@@ -4411,6 +6752,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_invoke_test", 
@@ -4422,6 +6768,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_before_invoke_test", 
@@ -4433,6 +6784,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_in_a_vacuum_test", 
@@ -4444,6 +6800,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_census_simple_request_test", 
@@ -4455,6 +6816,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test", 
@@ -4466,6 +6832,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_early_server_shutdown_finishes_tags_test", 
@@ -4477,6 +6848,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_empty_batch_test", 
@@ -4488,6 +6864,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_graceful_server_shutdown_test", 
@@ -4499,6 +6880,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_invoke_large_request_test", 
@@ -4510,6 +6896,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_max_concurrent_streams_test", 
@@ -4521,6 +6912,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_max_message_length_test", 
@@ -4532,6 +6928,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_no_op_test", 
@@ -4543,6 +6944,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_ping_pong_streaming_test", 
@@ -4554,6 +6960,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_registered_call_test", 
@@ -4565,6 +6976,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test", 
@@ -4576,6 +6992,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_metadata_and_payload_test", 
@@ -4587,6 +7008,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_payload_test", 
@@ -4598,6 +7024,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_payload_and_call_creds_test", 
@@ -4609,6 +7040,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_test", 
@@ -4620,6 +7056,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_compressed_payload_test", 
@@ -4631,6 +7072,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_flags_test", 
@@ -4642,6 +7088,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_large_metadata_test", 
@@ -4653,6 +7104,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_payload_test", 
@@ -4664,6 +7120,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_server_finishes_request_test", 
@@ -4675,6 +7136,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_simple_request_test", 
@@ -4686,6 +7152,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_simple_request_with_high_initial_sequence_number_test", 
@@ -4697,6 +7168,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_bad_hostname_test", 
@@ -4708,6 +7184,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test", 
@@ -4719,6 +7200,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test", 
@@ -4730,6 +7216,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test", 
@@ -4741,6 +7232,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test", 
@@ -4752,6 +7248,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test", 
@@ -4763,6 +7264,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test", 
@@ -4774,6 +7280,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test", 
@@ -4785,6 +7296,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test", 
@@ -4796,6 +7312,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_empty_batch_test", 
@@ -4807,6 +7328,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test", 
@@ -4818,6 +7344,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test", 
@@ -4829,6 +7360,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test", 
@@ -4840,6 +7376,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_max_message_length_test", 
@@ -4851,6 +7392,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_no_op_test", 
@@ -4862,6 +7408,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test", 
@@ -4873,6 +7424,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_registered_call_test", 
@@ -4884,6 +7440,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test", 
@@ -4895,6 +7456,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test", 
@@ -4906,6 +7472,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test", 
@@ -4917,6 +7488,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_and_call_creds_test", 
@@ -4928,6 +7504,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_test", 
@@ -4939,6 +7520,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_test", 
@@ -4950,6 +7536,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_flags_test", 
@@ -4961,6 +7552,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test", 
@@ -4972,6 +7568,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test", 
@@ -4983,6 +7584,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_test", 
@@ -4994,6 +7600,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_simple_request_test", 
@@ -5005,6 +7616,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_test", 
@@ -5016,6 +7632,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_bad_hostname_test", 
@@ -5027,6 +7649,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_accept_test", 
@@ -5038,6 +7666,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_test", 
@@ -5049,6 +7683,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_test", 
@@ -5060,6 +7700,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_test", 
@@ -5071,6 +7717,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_test", 
@@ -5082,6 +7734,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_census_simple_request_test", 
@@ -5093,6 +7751,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_test", 
@@ -5104,6 +7768,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_test", 
@@ -5115,6 +7785,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_empty_batch_test", 
@@ -5126,6 +7802,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_test", 
@@ -5137,6 +7819,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_invoke_large_request_test", 
@@ -5148,6 +7836,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_test", 
@@ -5159,6 +7853,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_max_message_length_test", 
@@ -5170,6 +7870,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_no_op_test", 
@@ -5181,6 +7887,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_test", 
@@ -5192,6 +7904,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_registered_call_test", 
@@ -5203,6 +7921,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_test", 
@@ -5214,6 +7938,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_test", 
@@ -5225,6 +7955,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_payload_test", 
@@ -5236,6 +7972,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_payload_and_call_creds_test", 
@@ -5247,6 +7989,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_test", 
@@ -5258,6 +8006,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_test", 
@@ -5269,6 +8023,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_flags_test", 
@@ -5280,6 +8040,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_test", 
@@ -5291,6 +8057,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_payload_test", 
@@ -5302,6 +8074,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_server_finishes_request_test", 
@@ -5313,6 +8091,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_simple_request_test", 
@@ -5324,6 +8108,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_test", 
@@ -5335,6 +8125,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_bad_hostname_unsecure_test", 
@@ -5346,6 +8142,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_accept_unsecure_test", 
@@ -5357,6 +8159,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -5368,6 +8176,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_after_invoke_unsecure_test", 
@@ -5379,6 +8193,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_before_invoke_unsecure_test", 
@@ -5387,9 +8207,15 @@
       "mac", 
       "posix", 
       "windows"
-    ]
-  }, 
-  {
+    ]
+  }, 
+  {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_cancel_in_a_vacuum_unsecure_test", 
@@ -5401,6 +8227,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_census_simple_request_unsecure_test", 
@@ -5412,6 +8244,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_channel_connectivity_unsecure_test", 
@@ -5423,6 +8261,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_default_host_unsecure_test", 
@@ -5434,6 +8278,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_disappearing_server_unsecure_test", 
@@ -5445,6 +8295,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -5456,6 +8312,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -5467,6 +8329,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_empty_batch_unsecure_test", 
@@ -5478,6 +8346,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_graceful_server_shutdown_unsecure_test", 
@@ -5489,6 +8363,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_invoke_large_request_unsecure_test", 
@@ -5500,6 +8380,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_max_concurrent_streams_unsecure_test", 
@@ -5511,6 +8397,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_max_message_length_unsecure_test", 
@@ -5522,6 +8414,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_no_op_unsecure_test", 
@@ -5533,6 +8431,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_ping_pong_streaming_unsecure_test", 
@@ -5544,6 +8448,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_registered_call_unsecure_test", 
@@ -5555,6 +8465,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -5566,6 +8482,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_metadata_and_payload_unsecure_test", 
@@ -5577,6 +8499,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_payload_unsecure_test", 
@@ -5588,6 +8516,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -5599,6 +8533,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_compressed_payload_unsecure_test", 
@@ -5610,6 +8550,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_flags_unsecure_test", 
@@ -5621,6 +8567,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_large_metadata_unsecure_test", 
@@ -5632,6 +8584,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_request_with_payload_unsecure_test", 
@@ -5643,6 +8601,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_server_finishes_request_unsecure_test", 
@@ -5654,6 +8618,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_delayed_request_unsecure_test", 
@@ -5665,6 +8635,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_request_unsecure_test", 
@@ -5676,6 +8652,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -5687,6 +8669,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_bad_hostname_unsecure_test", 
@@ -5698,6 +8686,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_accept_unsecure_test", 
@@ -5709,6 +8703,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -5720,6 +8720,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_after_invoke_unsecure_test", 
@@ -5731,6 +8737,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_before_invoke_unsecure_test", 
@@ -5742,6 +8754,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_cancel_in_a_vacuum_unsecure_test", 
@@ -5753,6 +8771,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_census_simple_request_unsecure_test", 
@@ -5764,6 +8788,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_channel_connectivity_unsecure_test", 
@@ -5775,6 +8805,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_default_host_unsecure_test", 
@@ -5786,6 +8822,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_disappearing_server_unsecure_test", 
@@ -5797,6 +8839,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -5808,6 +8856,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -5819,6 +8873,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_empty_batch_unsecure_test", 
@@ -5830,6 +8890,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_graceful_server_shutdown_unsecure_test", 
@@ -5841,6 +8907,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_invoke_large_request_unsecure_test", 
@@ -5852,6 +8924,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_max_concurrent_streams_unsecure_test", 
@@ -5863,6 +8941,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_max_message_length_unsecure_test", 
@@ -5874,6 +8958,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_no_op_unsecure_test", 
@@ -5885,6 +8975,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_ping_pong_streaming_unsecure_test", 
@@ -5896,6 +8992,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_registered_call_unsecure_test", 
@@ -5907,6 +9009,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -5918,6 +9026,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_metadata_and_payload_unsecure_test", 
@@ -5929,6 +9043,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_payload_unsecure_test", 
@@ -5940,6 +9060,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -5951,6 +9077,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_compressed_payload_unsecure_test", 
@@ -5962,6 +9094,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_flags_unsecure_test", 
@@ -5973,6 +9111,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_large_metadata_unsecure_test", 
@@ -5984,6 +9128,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_request_with_payload_unsecure_test", 
@@ -5995,6 +9145,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_server_finishes_request_unsecure_test", 
@@ -6006,6 +9162,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_delayed_request_unsecure_test", 
@@ -6017,6 +9179,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_request_unsecure_test", 
@@ -6028,6 +9196,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -6039,6 +9213,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_bad_hostname_unsecure_test", 
@@ -6049,6 +9228,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_accept_unsecure_test", 
@@ -6059,6 +9243,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -6069,6 +9258,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_after_invoke_unsecure_test", 
@@ -6079,6 +9273,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_before_invoke_unsecure_test", 
@@ -6089,6 +9288,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_cancel_in_a_vacuum_unsecure_test", 
@@ -6099,6 +9303,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_census_simple_request_unsecure_test", 
@@ -6109,6 +9318,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_channel_connectivity_unsecure_test", 
@@ -6119,6 +9333,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_disappearing_server_unsecure_test", 
@@ -6129,6 +9348,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -6139,6 +9363,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -6149,6 +9378,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_empty_batch_unsecure_test", 
@@ -6159,6 +9393,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_graceful_server_shutdown_unsecure_test", 
@@ -6169,6 +9408,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_invoke_large_request_unsecure_test", 
@@ -6179,6 +9423,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_max_concurrent_streams_unsecure_test", 
@@ -6189,6 +9438,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_max_message_length_unsecure_test", 
@@ -6199,6 +9453,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_no_op_unsecure_test", 
@@ -6209,6 +9468,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_ping_pong_streaming_unsecure_test", 
@@ -6219,6 +9483,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_registered_call_unsecure_test", 
@@ -6229,6 +9498,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -6239,6 +9513,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_unsecure_test", 
@@ -6249,6 +9528,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_payload_unsecure_test", 
@@ -6259,6 +9543,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -6269,6 +9558,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_compressed_payload_unsecure_test", 
@@ -6279,6 +9573,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_flags_unsecure_test", 
@@ -6289,6 +9588,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_large_metadata_unsecure_test", 
@@ -6299,6 +9603,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_request_with_payload_unsecure_test", 
@@ -6309,6 +9618,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_server_finishes_request_unsecure_test", 
@@ -6319,6 +9633,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_delayed_request_unsecure_test", 
@@ -6329,6 +9648,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_request_unsecure_test", 
@@ -6339,6 +9663,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -6349,6 +9678,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_bad_hostname_unsecure_test", 
@@ -6357,6 +9689,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_unsecure_test", 
@@ -6365,6 +9700,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -6373,6 +9711,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_after_invoke_unsecure_test", 
@@ -6381,6 +9722,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_before_invoke_unsecure_test", 
@@ -6389,6 +9733,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_cancel_in_a_vacuum_unsecure_test", 
@@ -6397,6 +9744,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_census_simple_request_unsecure_test", 
@@ -6405,6 +9755,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_channel_connectivity_unsecure_test", 
@@ -6413,6 +9766,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_disappearing_server_unsecure_test", 
@@ -6421,6 +9777,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -6429,6 +9788,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -6437,6 +9799,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_empty_batch_unsecure_test", 
@@ -6445,6 +9810,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_graceful_server_shutdown_unsecure_test", 
@@ -6453,6 +9821,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_invoke_large_request_unsecure_test", 
@@ -6461,6 +9832,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_max_concurrent_streams_unsecure_test", 
@@ -6469,6 +9843,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_max_message_length_unsecure_test", 
@@ -6477,6 +9854,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_no_op_unsecure_test", 
@@ -6485,6 +9865,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_ping_pong_streaming_unsecure_test", 
@@ -6493,6 +9876,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_registered_call_unsecure_test", 
@@ -6501,6 +9887,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -6509,6 +9898,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_metadata_and_payload_unsecure_test", 
@@ -6517,6 +9909,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_payload_unsecure_test", 
@@ -6525,6 +9920,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -6533,6 +9931,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_compressed_payload_unsecure_test", 
@@ -6541,6 +9942,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_flags_unsecure_test", 
@@ -6549,6 +9953,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_large_metadata_unsecure_test", 
@@ -6557,6 +9964,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_request_with_payload_unsecure_test", 
@@ -6565,6 +9975,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_server_finishes_request_unsecure_test", 
@@ -6573,6 +9986,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_delayed_request_unsecure_test", 
@@ -6581,6 +9997,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_request_unsecure_test", 
@@ -6589,6 +10008,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_uds_posix_with_poll_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -6597,6 +10019,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_bad_hostname_unsecure_test", 
@@ -6605,6 +10030,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_accept_unsecure_test", 
@@ -6613,6 +10041,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -6621,6 +10052,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_after_invoke_unsecure_test", 
@@ -6629,6 +10063,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_before_invoke_unsecure_test", 
@@ -6637,6 +10074,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_cancel_in_a_vacuum_unsecure_test", 
@@ -6645,6 +10085,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_census_simple_request_unsecure_test", 
@@ -6653,6 +10096,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_channel_connectivity_unsecure_test", 
@@ -6661,6 +10107,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_default_host_unsecure_test", 
@@ -6669,6 +10118,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_disappearing_server_unsecure_test", 
@@ -6677,6 +10129,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -6685,6 +10140,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -6693,6 +10151,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_empty_batch_unsecure_test", 
@@ -6701,6 +10162,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_graceful_server_shutdown_unsecure_test", 
@@ -6709,6 +10173,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_invoke_large_request_unsecure_test", 
@@ -6717,6 +10184,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_max_concurrent_streams_unsecure_test", 
@@ -6725,6 +10195,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_max_message_length_unsecure_test", 
@@ -6733,6 +10206,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_no_op_unsecure_test", 
@@ -6741,6 +10217,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_ping_pong_streaming_unsecure_test", 
@@ -6749,6 +10228,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_registered_call_unsecure_test", 
@@ -6757,6 +10239,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -6765,6 +10250,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_unsecure_test", 
@@ -6773,6 +10261,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_payload_unsecure_test", 
@@ -6781,6 +10272,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -6789,6 +10283,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_compressed_payload_unsecure_test", 
@@ -6797,6 +10294,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_flags_unsecure_test", 
@@ -6805,6 +10305,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_large_metadata_unsecure_test", 
@@ -6813,6 +10316,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_request_with_payload_unsecure_test", 
@@ -6821,6 +10327,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_server_finishes_request_unsecure_test", 
@@ -6829,6 +10338,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_delayed_request_unsecure_test", 
@@ -6837,6 +10349,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_request_unsecure_test", 
@@ -6845,6 +10360,9 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -6853,6 +10371,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_bad_hostname_unsecure_test", 
@@ -6864,6 +10387,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_accept_unsecure_test", 
@@ -6875,6 +10403,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -6886,6 +10419,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_after_invoke_unsecure_test", 
@@ -6897,6 +10435,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_before_invoke_unsecure_test", 
@@ -6908,6 +10451,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_cancel_in_a_vacuum_unsecure_test", 
@@ -6919,6 +10467,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_census_simple_request_unsecure_test", 
@@ -6930,6 +10483,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_default_host_unsecure_test", 
@@ -6941,6 +10499,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_disappearing_server_unsecure_test", 
@@ -6952,6 +10515,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -6963,6 +10531,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -6974,6 +10547,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_empty_batch_unsecure_test", 
@@ -6985,6 +10563,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_graceful_server_shutdown_unsecure_test", 
@@ -6996,6 +10579,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_invoke_large_request_unsecure_test", 
@@ -7007,6 +10595,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_max_message_length_unsecure_test", 
@@ -7018,6 +10611,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_no_op_unsecure_test", 
@@ -7029,6 +10627,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_ping_pong_streaming_unsecure_test", 
@@ -7040,6 +10643,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_registered_call_unsecure_test", 
@@ -7051,6 +10659,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -7062,6 +10675,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_metadata_and_payload_unsecure_test", 
@@ -7073,6 +10691,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_payload_unsecure_test", 
@@ -7084,6 +10707,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -7095,6 +10723,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_with_large_metadata_unsecure_test", 
@@ -7106,6 +10739,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_request_with_payload_unsecure_test", 
@@ -7117,6 +10755,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_server_finishes_request_unsecure_test", 
@@ -7128,6 +10771,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_delayed_request_unsecure_test", 
@@ -7139,6 +10787,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_request_unsecure_test", 
@@ -7150,6 +10803,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_fullstack_with_proxy_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -7161,6 +10819,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_bad_hostname_unsecure_test", 
@@ -7172,6 +10835,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_accept_unsecure_test", 
@@ -7183,6 +10851,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -7194,6 +10867,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_after_invoke_unsecure_test", 
@@ -7205,6 +10883,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_before_invoke_unsecure_test", 
@@ -7216,6 +10899,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test", 
@@ -7227,6 +10915,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_census_simple_request_unsecure_test", 
@@ -7238,6 +10931,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -7249,6 +10947,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -7260,6 +10963,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_empty_batch_unsecure_test", 
@@ -7271,6 +10979,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_graceful_server_shutdown_unsecure_test", 
@@ -7282,6 +10995,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_invoke_large_request_unsecure_test", 
@@ -7293,6 +11011,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_max_concurrent_streams_unsecure_test", 
@@ -7304,6 +11027,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_max_message_length_unsecure_test", 
@@ -7315,6 +11043,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_no_op_unsecure_test", 
@@ -7326,6 +11059,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_ping_pong_streaming_unsecure_test", 
@@ -7337,6 +11075,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_registered_call_unsecure_test", 
@@ -7348,6 +11091,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -7359,6 +11107,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test", 
@@ -7370,6 +11123,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_payload_unsecure_test", 
@@ -7381,6 +11139,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -7392,6 +11155,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_compressed_payload_unsecure_test", 
@@ -7403,6 +11171,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_flags_unsecure_test", 
@@ -7414,6 +11187,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_large_metadata_unsecure_test", 
@@ -7425,6 +11203,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_request_with_payload_unsecure_test", 
@@ -7436,6 +11219,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_server_finishes_request_unsecure_test", 
@@ -7447,6 +11235,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_simple_request_unsecure_test", 
@@ -7458,6 +11251,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -7469,6 +11267,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test", 
@@ -7480,6 +11283,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test", 
@@ -7491,6 +11299,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -7502,6 +11315,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test", 
@@ -7513,6 +11331,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test", 
@@ -7524,6 +11347,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test", 
@@ -7535,6 +11363,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test", 
@@ -7546,6 +11379,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -7557,6 +11395,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -7568,6 +11411,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test", 
@@ -7579,6 +11427,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test", 
@@ -7590,6 +11443,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test", 
@@ -7601,6 +11459,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test", 
@@ -7612,6 +11475,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test", 
@@ -7623,6 +11491,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test", 
@@ -7634,6 +11507,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test", 
@@ -7645,6 +11523,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test", 
@@ -7656,6 +11539,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -7667,6 +11555,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test", 
@@ -7678,6 +11571,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test", 
@@ -7689,6 +11587,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -7700,6 +11603,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_unsecure_test", 
@@ -7711,6 +11619,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test", 
@@ -7722,6 +11635,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test", 
@@ -7733,6 +11651,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test", 
@@ -7744,6 +11667,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test", 
@@ -7755,6 +11683,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test", 
@@ -7766,6 +11699,11 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -7777,6 +11715,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test", 
@@ -7788,6 +11732,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test", 
@@ -7799,6 +11749,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test", 
@@ -7810,6 +11766,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test", 
@@ -7821,6 +11783,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test", 
@@ -7832,6 +11800,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test", 
@@ -7843,6 +11817,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test", 
@@ -7854,6 +11834,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test", 
@@ -7865,6 +11851,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test", 
@@ -7876,6 +11868,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test", 
@@ -7887,6 +11885,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test", 
@@ -7898,6 +11902,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test", 
@@ -7909,6 +11919,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test", 
@@ -7920,6 +11936,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test", 
@@ -7931,6 +11953,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test", 
@@ -7942,6 +11970,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test", 
@@ -7953,6 +11987,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test", 
@@ -7964,6 +12004,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test", 
@@ -7975,6 +12021,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test", 
@@ -7986,6 +12038,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test", 
@@ -7997,6 +12055,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test", 
@@ -8008,6 +12072,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_unsecure_test", 
@@ -8019,6 +12089,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test", 
@@ -8030,6 +12106,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test", 
@@ -8041,6 +12123,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test", 
@@ -8052,6 +12140,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test", 
@@ -8063,6 +12157,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test", 
@@ -8074,6 +12174,12 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test", 
@@ -8085,22 +12191,37 @@
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "connection_prefix_bad_client_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }, 
   {
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "initial_settings_frame_bad_client_test", 
     "platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ]
   }
 ]
-