Refactor tcp socket and unix domain socket.

net/base/net_util.h

 // Copyright (c) 2012 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 NET_BASE_NET_UTIL_H_
 #define NET_BASE_NET_UTIL_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 96 matching lines @@
 
 // Returns true if an IP address hostname is in a range reserved by the IANA.
 // Works with both IPv4 and IPv6 addresses, and only compares against a given
 // protocols's reserved ranges.
 NET_EXPORT bool IsIPAddressReserved(const IPAddressNumber& address);
 
 // Convenience struct for when you need a |struct sockaddr|.
 struct SockaddrStorage {
   SockaddrStorage() : addr_len(sizeof(addr_storage)),
                       addr(reinterpret_cast<struct sockaddr*>(&addr_storage)) {}
+  SockaddrStorage(const SockaddrStorage& other);
+  void operator=(const SockaddrStorage& other);
+
   struct sockaddr_storage addr_storage;
   socklen_t addr_len;
   struct sockaddr* const addr;
 };
 
 // Extracts the IP address and port portions of a sockaddr. |port| is optional,
 // and will not be filled in if NULL.
 bool GetIPAddressFromSockAddr(const struct sockaddr* sock_addr,
                               socklen_t sock_addr_len,
                               const unsigned char** address,
@@ skipping 396 matching lines @@
   DSCP_CS5  = 40,  // Video
   DSCP_EF   = 46,  // Voice
   DSCP_CS6  = 48,  // Voice
   DSCP_CS7  = 56,  // Control messages
   DSCP_LAST = DSCP_CS7
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_UTIL_H_