Add /doc/workarounds.md

doc/workarounds.md

+# gRPC Server Backward Compatibility Issues and Workarounds Manageent
+
+## Introduction
+This document lists the workarounds implemented on gRPC servers for record and reference when users need to enable a certain workaround.
+
+## Workaround Lists
+
+| Workaround ID                       | Date added   | Issue                                             | Workaround Description                               | Status                   |
+|-------------------------------------|--------------|---------------------------------------------------|------------------------------------------------------|--------------------------|
+| WORKAROUND\_ID\_CRONET\_COMPRESSION | May 06, 2017 | Before version v1.3.0-dev, gRPC iOS client's      | Implemented as a server channel filter in C core.    | Implemented in C and C++ |
+|                                     |              | Cronet transport did not implement compression.   | The filter identifies the version of peer client     |                          |
+|                                     |              | However the clients still claim to support        | with incoming `user-agent` header of each call. If   |                          |
+|                                     |              | compression. As a result, a client fails to parse | the client's gRPC version is lower that or equal to  |                          |
+|                                     |              | received message when the message is compressed.  | v1.3.x, a flag GRPC\_WRITE\_NO\_COMPRESS is marked   |                          |
+|                                     |              |                                                   | for all send\_message ops which prevents compression |                          |
+|                                     |              | The problem above was resolved in gRPC v1.3.0-dev.| of the messages to be sent out.                      |                          |
+|                                     |              | For backward compatibility, a server must         |                                                      |                          |
+|                                     |              | forcingly disable compression for gRPC clients of |                                                      |                          |
+|                                     |              | version lower than or equal to v1.3.0-dev.        |                                                      |                          |
+

include/grpc++/server_builder.h

@@ -186,7 +186,7 @@ class ServerBuilder {
 
   /// Enable a server workaround. Do not use unless you know what the workaround
   /// does. For explanation and detailed descriptions of workarounds, see
-  /// docs/workarounds.md.
+  /// doc/workarounds.md.
   ServerBuilder& EnableWorkaround(uint32_t id);
 
  private:

include/grpc/support/workaround_list.h

@@ -36,7 +36,7 @@
 
 /* The list of IDs of server workarounds currently maintained by gRPC. For
  * explanation and detailed descriptions of workarounds, see
- * /docs/workarounds.md
+ * /doc/workarounds.md
  */
 typedef enum {
   GRPC_WORKAROUND_ID_CRONET_COMPRESSION = 0,