Add NetLog support to UDP sockets.

net/udp/udp_socket_libevent.h

 // Copyright (c) 2011 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_UDP_UDP_SOCKET_LIBEVENT_H_
 #define NET_UDP_UDP_SOCKET_LIBEVENT_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/threading/non_thread_safe.h"
+#include "net/base/address_list_net_log_param.h"
 #include "net/base/completion_callback.h"
 #include "net/base/rand_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_log.h"
 #include "net/udp/datagram_socket.h"
 
 namespace net {
 
-class BoundNetLog;
-
 class UDPSocketLibevent : public base::NonThreadSafe {
  public:
   UDPSocketLibevent(DatagramSocket::BindType bind_type,
                     const RandIntCallback& rand_int_cb,
                     net::NetLog* net_log,
                     const net::NetLog::Source& source);
   virtual ~UDPSocketLibevent();
 
   // Connect the socket to connect with a certain |address|.
   // Returns a net error code.
@@ skipping 110 matching lines @@
     UDPSocketLibevent* const socket_;
 
     DISALLOW_COPY_AND_ASSIGN(WriteWatcher);
   };
 
   void DoReadCallback(int rv);
   void DoWriteCallback(int rv);
   void DidCompleteRead();
   void DidCompleteWrite();
 
+  // Handles stats and logging. |result| is the number of bytes transferred, on
+  // success, or the net error code on failure. On success, LogRead takes in a
+  // sockaddr and its length, which are mandatory, while LogWrite takes in an
+  // optional IPEndPoint.
+  void LogRead(int result, const char* bytes, socklen_t addr_len,
+               const sockaddr* addr) const;
+  void LogWrite(int result, const char* bytes, const IPEndPoint* address) const;
+
   // Returns the OS error code (or 0 on success).
   int CreateSocket(const IPEndPoint& address);
 
   // Same as SendTo(), except that address is passed by pointer
   // instead of by reference. It is called from Write() with |address|
   // set to NULL.
   int SendToOrWrite(IOBuffer* buf,
                     int buf_len,
                     const IPEndPoint* address,
                     OldCompletionCallback* callback);
 
+  int InternalConnect(const IPEndPoint& address);
   int InternalRecvFrom(IOBuffer* buf, int buf_len, IPEndPoint* address);
   int InternalSendTo(IOBuffer* buf, int buf_len, const IPEndPoint* address);
 
   int DoBind(const IPEndPoint& address);
   int RandomBind(const IPEndPoint& address);
 
   int socket_;
 
   // How to do source port binding, used only when UDPSocket is part of
   // UDPClientSocket, since UDPServerSocket provides Bind.
@@ skipping 32 matching lines @@
   OldCompletionCallback* write_callback_;
 
   BoundNetLog net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(UDPSocketLibevent);
 };
 
 }  // namespace net
 
 #endif  // NET_UDP_UDP_SOCKET_LIBEVENT_H_