Rename response proto field.

Author: kannanjgithub

interop-testing/src/main/java/io/grpc/testing/integration/TestServiceClient.java

@@ -1125,7 +1125,7 @@ public void testMcs(TestServiceGrpc.TestServiceStub asyncStub) throws Exception
       streamObserver1.onNext(request);
       Object responseObj = responseObserver1.take();
       StreamingOutputCallResponse callResponse = (StreamingOutputCallResponse) responseObj;
-      String clientSocketAddressInCall1 = callResponse.getClientSocketAddress();
+      String clientSocketAddressInCall1 = callResponse.getPeerSocketAddress();
       assertThat(clientSocketAddressInCall1).isNotEmpty();
 
       StreamingOutputCallResponseObserver responseObserver2 =
@@ -1134,7 +1134,7 @@ public void testMcs(TestServiceGrpc.TestServiceStub asyncStub) throws Exception
           asyncStub.fullDuplexCall(responseObserver2);
       streamObserver2.onNext(request);
       callResponse = (StreamingOutputCallResponse) responseObserver2.take();
-      String clientSocketAddressInCall2 = callResponse.getClientSocketAddress();
+      String clientSocketAddressInCall2 = callResponse.getPeerSocketAddress();
 
       assertThat(clientSocketAddressInCall1).isEqualTo(clientSocketAddressInCall2);
 
@@ -1146,7 +1146,7 @@ public void testMcs(TestServiceGrpc.TestServiceStub asyncStub) throws Exception
           asyncStub.fullDuplexCall(responseObserver3);
       streamObserver3.onNext(request);
       callResponse = (StreamingOutputCallResponse) responseObserver3.take();
-      String clientSocketAddressInCall3 = callResponse.getClientSocketAddress();
+      String clientSocketAddressInCall3 = callResponse.getPeerSocketAddress();
 
       // This assertion is currently failing because connection scaling when MCS limit has been
       // reached is not yet implemented in gRPC Java.

interop-testing/src/main/java/io/grpc/testing/integration/TestServiceImpl.java

@@ -245,7 +245,7 @@ public void onNext(StreamingOutputCallRequest request) {
         if (whetherSendClientSocketAddressInResponse(request)) {
           responseObserver.onNext(
               StreamingOutputCallResponse.newBuilder()
-                  .setClientSocketAddress(PEER_ADDRESS_CONTEXT_KEY.get().toString())
+                  .setPeerSocketAddress(PEER_ADDRESS_CONTEXT_KEY.get().toString())
                   .build());
           return;
         }

interop-testing/src/main/proto/grpc/testing/messages.proto

@@ -191,8 +191,8 @@ message StreamingOutputCallResponse {
   // Payload to increase response size.
   Payload payload = 1;
 
-  // The client's socket address if requested.
-  string client_socket_address = 2;
+  // The peer's socket address if requested.
+  string peer_socket_address = 2;
 }
 
 // For reconnect interop test only.