diff --git a/src/objective-c/examples/Sample/SampleTests/RemoteTests.m b/src/objective-c/examples/Sample/SampleTests/RemoteTests.m
new file mode 100644
index 0000000000000000000000000000000000000000..ba5d46f277c954532e04518e0ae7deed210160c2
--- /dev/null
+++ b/src/objective-c/examples/Sample/SampleTests/RemoteTests.m
@@ -0,0 +1,138 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#import <UIKit/UIKit.h>
+#import <XCTest/XCTest.h>
+
+#import <gRPC/GRPCCall.h>
+#import <gRPC/GRPCMethodName.h>
+#import <Route_guide/Route_guide.pb.h>
+#import <RxLibrary/GRXWriter+Immediate.h>
+#import <RxLibrary/GRXWriteable.h>
+
+@interface RemoteTests : XCTestCase
+@end
+
+@implementation RemoteTests
+
+- (void)testConnectionToRemoteServer {
+ __weak XCTestExpectation *expectation = [self expectationWithDescription:@"Server reachable."];
+
+ // This method isn't implemented by the remote server.
+ GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:@"grpc.testing"
+ interface:@"TestService"
+ method:@"Nonexistent"];
+
+ id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[NSData data]];
+
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"grpc-test.sandbox.google.com"
+ method:method
+ requestsWriter:requestsWriter];
+
+ id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+ XCTFail(@"Received unexpected response: %@", value);
+ } completionHandler:^(NSError *errorOrNil) {
+ XCTAssertNotNil(errorOrNil, @"Finished without error!");
+ // TODO(jcanizales): The server should return code 12 UNIMPLEMENTED, not 5 NOT FOUND.
+ XCTAssertEqual(errorOrNil.code, 5, @"Finished with unexpected error: %@", errorOrNil);
+ [expectation fulfill];
+ }];
+
+ [call startWithWriteable:responsesWriteable];
+
+ [self waitForExpectationsWithTimeout:2. handler:nil];
+}
+
+- (void)testEmptyRPC {
+ __weak XCTestExpectation *response = [self expectationWithDescription:@"Empty response received."];
+ __weak XCTestExpectation *completion = [self expectationWithDescription:@"Empty RPC completed."];
+
+ GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:@"grpc.testing"
+ interface:@"TestService"
+ method:@"EmptyCall"];
+
+ id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[NSData data]];
+
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"grpc-test.sandbox.google.com"
+ method:method
+ requestsWriter:requestsWriter];
+
+ id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+ XCTAssertNotNil(value, @"nil value received as response.");
+ XCTAssertEqual([value length], 0, @"Non-empty response received: %@", value);
+ [response fulfill];
+ } completionHandler:^(NSError *errorOrNil) {
+ XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
+ [completion fulfill];
+ }];
+
+ [call startWithWriteable:responsesWriteable];
+
+ [self waitForExpectationsWithTimeout:2. handler:nil];
+}
+
+- (void)testSimpleProtoRPC {
+ __weak XCTestExpectation *response = [self expectationWithDescription:@"Response received."];
+ __weak XCTestExpectation *expectedResponse =
+ [self expectationWithDescription:@"Expected response."];
+ __weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
+
+ GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:@"grpc.testing"
+ interface:@"TestService"
+ method:@"UnaryCall"];
+
+ RGDPoint *point = [[[[[RGDPointBuilder alloc] init] setLatitude:28E7] setLongitude:-15E7] build];
+ id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[point data]];
+
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"grpc-test.sandbox.google.com"
+ method:method
+ requestsWriter:requestsWriter];
+
+ id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+ XCTAssertNotNil(value, @"nil value received as response.");
+ [response fulfill];
+ RGDFeature *feature = [RGDFeature parseFromData:value];
+ XCTAssertEqualObjects(point, feature.location);
+ XCTAssertNotNil(feature.name, @"Response's name is nil.");
+ [expectedResponse fulfill];
+ } completionHandler:^(NSError *errorOrNil) {
+ XCTAssertNil(errorOrNil, @"Finished with unexpected error: %@", errorOrNil);
+ [completion fulfill];
+ }];
+
+ [call startWithWriteable:responsesWriteable];
+
+ [self waitForExpectationsWithTimeout:2. handler:nil];
+}
+
+@end
diff --git a/src/objective-c/examples/Sample/SampleTests/SampleTests.m b/src/objective-c/examples/Sample/SampleTests/SampleTests.m
index ca5e302a17453aa37284200baafb92534fb73eab..322a59288748e1e794ece7ac4c31f0482235457c 100644
--- a/src/objective-c/examples/Sample/SampleTests/SampleTests.m
+++ b/src/objective-c/examples/Sample/SampleTests/SampleTests.m
@@ -58,7 +58,7 @@
id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[NSData data]];
- GRPCCall *call = [[GRPCCall alloc] initWithHost:@"127.0.0.1:8980"
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"http://127.0.0.1:8980"
method:method
requestsWriter:requestsWriter];
@@ -85,7 +85,7 @@
id<GRXWriter> requestsWriter = [GRXWriter emptyWriter];
- GRPCCall *call = [[GRPCCall alloc] initWithHost:@"127.0.0.1:8980"
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"http://127.0.0.1:8980"
method:method
requestsWriter:requestsWriter];
@@ -116,7 +116,7 @@
RGDPoint *point = [[[[[RGDPointBuilder alloc] init] setLatitude:28E7] setLongitude:-15E7] build];
id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[point data]];
- GRPCCall *call = [[GRPCCall alloc] initWithHost:@"127.0.0.1:8980"
+ GRPCCall *call = [[GRPCCall alloc] initWithHost:@"https://127.0.0.1:8980"
method:method
requestsWriter:requestsWriter];