Merge pull request #10566 from muxi/fix-trailer-only

Send `content-type` header on trailer-only responses
diff --git a/binding.gyp b/binding.gyp
index 3df6d0a..7553de1 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -519,9 +519,10 @@
           # the OpenSSL headers, from the downloaded Node development package,
           # which is typically located in `.node-gyp` in your home directory.
           'target_name': 'WINDOWS_BUILD_WARNING',
-          'actions': [
+          'rules': [
             {
-              'action_name': 'WINDOWS_BUILD_WARNING',
+              'rule_name': 'WINDOWS_BUILD_WARNING',
+              'extension': 'S',
               'inputs': [
                 'package.json'
               ],
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.c b/src/core/ext/transport/cronet/transport/cronet_transport.c
index 0b91895..88335ec 100644
--- a/src/core/ext/transport/cronet/transport/cronet_transport.c
+++ b/src/core/ext/transport/cronet/transport/cronet_transport.c
@@ -1124,7 +1124,8 @@
           if (stream_state->rs.compressed) {
             stream_state->rs.sbs.base.flags |= GRPC_WRITE_INTERNAL_COMPRESS;
           }
-          *((grpc_byte_buffer **)stream_op->recv_message) =
+          *((grpc_byte_buffer **)
+                stream_op->payload->recv_message.recv_message) =
               (grpc_byte_buffer *)&stream_state->rs.sbs;
           grpc_closure_sched(
               exec_ctx, stream_op->payload->recv_message.recv_message_ready,
diff --git a/src/objective-c/tests/InteropTests.m b/src/objective-c/tests/InteropTests.m
index 9105356..69968dc 100644
--- a/src/objective-c/tests/InteropTests.m
+++ b/src/objective-c/tests/InteropTests.m
@@ -100,6 +100,15 @@
   return 0;
 }
 
++ (void)setUp {
+#ifdef GRPC_COMPILE_WITH_CRONET
+  // Cronet setup
+  [Cronet setHttp2Enabled:YES];
+  [Cronet start];
+  [GRPCCall useCronetWithEngine:[Cronet getGlobalEngine]];
+#endif
+}
+
 - (void)setUp {
   self.continueAfterFailure = NO;
 
diff --git a/src/ruby/spec/generic/rpc_server_pool_spec.rb b/src/ruby/spec/generic/rpc_server_pool_spec.rb
index 69e8222..0803ca7 100644
--- a/src/ruby/spec/generic/rpc_server_pool_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_pool_spec.rb
@@ -52,28 +52,31 @@
       expect(p.ready_for_work?).to be(false)
     end
 
-    it 'it stops being ready after all workers jobs waiting or running' do
+    it 'it stops being ready after all workers are busy' do
       p = Pool.new(5)
       p.start
-      job = proc { sleep(3) } # sleep so workers busy when done scheduling
-      5.times do
-        expect(p.ready_for_work?).to be(true)
-        p.schedule(&job)
-      end
-      expect(p.ready_for_work?).to be(false)
-    end
 
-    it 'it becomes ready again after jobs complete' do
-      p = Pool.new(5)
-      p.start
-      job = proc {}
+      wait_mu = Mutex.new
+      wait_cv = ConditionVariable.new
+      wait = true
+
+      job = proc do
+        wait_mu.synchronize do
+          wait_cv.wait(wait_mu) while wait
+        end
+      end
+
       5.times do
         expect(p.ready_for_work?).to be(true)
         p.schedule(&job)
       end
+
       expect(p.ready_for_work?).to be(false)
-      sleep 5 # give the pool time do get at least one task done
-      expect(p.ready_for_work?).to be(true)
+
+      wait_mu.synchronize do
+        wait = false
+        wait_cv.broadcast
+      end
     end
   end
 
@@ -105,13 +108,20 @@
     it 'stops jobs when there are long running jobs' do
       p = Pool.new(1)
       p.start
-      o, q = Object.new, Queue.new
+
+      wait_forever_mu = Mutex.new
+      wait_forever_cv = ConditionVariable.new
+      wait_forever = true
+
+      job_running = Queue.new
       job = proc do
-        sleep(5)  # long running
-        q.push(o)
+        job_running.push(Object.new)
+        wait_forever_mu.synchronize do
+          wait_forever_cv.wait while wait_forever
+        end
       end
       p.schedule(&job)
-      sleep(1)  # should ensure the long job gets scheduled
+      job_running.pop
       expect { p.stop }.not_to raise_error
     end
   end
diff --git a/templates/binding.gyp.template b/templates/binding.gyp.template
index aeeb56b..55a91c5 100644
--- a/templates/binding.gyp.template
+++ b/templates/binding.gyp.template
@@ -217,9 +217,10 @@
             # the OpenSSL headers, from the downloaded Node development package,
             # which is typically located in `.node-gyp` in your home directory.
             'target_name': 'WINDOWS_BUILD_WARNING',
-            'actions': [
+            'rules': [
               {
-                'action_name': 'WINDOWS_BUILD_WARNING',
+                'rule_name': 'WINDOWS_BUILD_WARNING',
+                'extension': 'S',
                 'inputs': [
                   'package.json'
                 ],
diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index c0933c6..9bdce71 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -582,7 +582,7 @@
 static void validate_compute_engine_http_request(
     const grpc_httpcli_request *request) {
   GPR_ASSERT(request->handshaker != &grpc_httpcli_ssl);
-  GPR_ASSERT(strcmp(request->host, "metadata") == 0);
+  GPR_ASSERT(strcmp(request->host, "metadata.google.internal") == 0);
   GPR_ASSERT(
       strcmp(request->http.path,
              "/computeMetadata/v1/instance/service-accounts/default/token") ==
diff --git a/tools/dockerfile/test/bazel/Dockerfile b/tools/dockerfile/test/bazel/Dockerfile
index cc41384..6ea8ef3 100644
--- a/tools/dockerfile/test/bazel/Dockerfile
+++ b/tools/dockerfile/test/bazel/Dockerfile
@@ -72,6 +72,13 @@
 RUN apt-get -y update
 RUN apt-get -y install bazel
 
+# Pin Bazel to 0.4.4
+# Installing Bazel via apt-get first is required before installing 0.4.4 to
+# allow gRPC to build without errors. See https://github.com/grpc/grpc/issues/10553
+RUN curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/0.4.4/bazel-0.4.4-installer-linux-x86_64.sh
+RUN chmod +x ./bazel-0.4.4-installer-linux-x86_64.sh
+RUN ./bazel-0.4.4-installer-linux-x86_64.sh
+
 RUN mkdir -p /var/local/jenkins
 
 # Define the default command.
diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 2337f2b..35a7959 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -226,7 +226,7 @@
 for name, bm in benchmarks.items():
   print name
   really_interesting.update(bm.process())
-fields = [f for f in args.track if f in args.track]
+fields = [f for f in args.track if f in really_interesting]
 
 headers = ['Benchmark'] + fields
 rows = []
diff --git a/tools/profiling/microbenchmarks/bm_json.py b/tools/profiling/microbenchmarks/bm_json.py
index e885444..9172698 100644
--- a/tools/profiling/microbenchmarks/bm_json.py
+++ b/tools/profiling/microbenchmarks/bm_json.py
@@ -203,4 +203,5 @@
           row['real_time'] = bm2['real_time']
           row['iterations'] = bm2['iterations']
           bm2['already_used'] = True
+          break
     yield row