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;
+const uint16_t kDefaultTcpPort = 25467;

[haibinlu, 2016/01/04 19:45:45]

this will be mapped to a different port in engine. 

[Kevin M, 2016/01/04 20:42:13]

Good point, removed it from common.h.

+
+net::IPAddressNumber GetIPv4AnyAddress() {
+  net::IPAddressNumber output;
+  output.push_back(0);
+  output.push_back(0);
+  output.push_back(0);
+  output.push_back(0);
+  return output;
+}
+
+std::ostream& operator<<(std::ostream& out, const BlimpMessage& message) {
+  // TODO(kmarshall): Log type-specific contextual detail.
+  out << "<BlimpMessage type=" << message.type()
+      << ", size=" << message.ByteSize() << ">";
+  return out;
+}
 
 }  // namespace blimp