Implementation and fixes for Blimp client/engine E2E communication.

blimp/net/common.h

 // 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.
 
 #ifndef BLIMP_NET_COMMON_H_
 #define BLIMP_NET_COMMON_H_
 
 #include <stddef.h>
 
 #include <string>
 
 #include "blimp/net/blimp_net_export.h"
+#include "net/base/ip_address_number.h"
 
 namespace blimp {
 
 class BlimpMessage;
 
 // TODO(kmarshall): Apply SCIENCE to determine a better constant here.
 // See crbug.com/542464
 extern const size_t BLIMP_NET_EXPORT kMaxPacketPayloadSizeBytes;
 extern const size_t BLIMP_NET_EXPORT kPacketHeaderSizeBytes;
 
+// Serializes human-readable BlimpMessage header info, for logging purposes.
+std::ostream& BLIMP_NET_EXPORT operator<<(std::ostream& out,
+                                          const BlimpMessage& message);
+
 }  // namespace blimp
 
 #endif  // BLIMP_NET_COMMON_H_