Implementation and fixes for Blimp client/engine E2E communication.

blimp/net/common.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/net/common.h"
 
+#include <iostream>
+
+#include "blimp/common/proto/blimp_message.pb.h"
+#include "net/base/ip_address_number.h"
+
 namespace blimp {
 
 const size_t kMaxPacketPayloadSizeBytes = 1 << 16;  // 64KB
 const size_t kPacketHeaderSizeBytes = 4;
 
+std::ostream& operator<<(std::ostream& out, const BlimpMessage& message) {
+  // TODO(kmarshall): Look into including type-specific fields in the output.
+  out << "<BlimpMessage type=" << message.type()
+      << ", size=" << message.ByteSize() << ">";
+  return out;
+}
+
 }  // namespace blimp