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      1 /*
      2  * libjingle
      3  * Copyright 2005--2010, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_BASE_SOCKETSTREAM_H_
     29 #define TALK_BASE_SOCKETSTREAM_H_
     30 
     31 #include "talk/base/asyncsocket.h"
     32 #include "talk/base/common.h"
     33 #include "talk/base/stream.h"
     34 
     35 namespace talk_base {
     36 
     37 ///////////////////////////////////////////////////////////////////////////////
     38 
     39 class SocketStream : public StreamInterface, public sigslot::has_slots<> {
     40  public:
     41   explicit SocketStream(AsyncSocket* socket);
     42   virtual ~SocketStream();
     43 
     44   void Attach(AsyncSocket* socket);
     45   AsyncSocket* Detach();
     46 
     47   AsyncSocket* GetSocket() { return socket_; }
     48 
     49   virtual StreamState GetState() const;
     50 
     51   virtual StreamResult Read(void* buffer, size_t buffer_len,
     52                             size_t* read, int* error);
     53 
     54   virtual StreamResult Write(const void* data, size_t data_len,
     55                              size_t* written, int* error);
     56 
     57   virtual void Close();
     58 
     59  private:
     60   void OnConnectEvent(AsyncSocket* socket);
     61   void OnReadEvent(AsyncSocket* socket);
     62   void OnWriteEvent(AsyncSocket* socket);
     63   void OnCloseEvent(AsyncSocket* socket, int err);
     64 
     65   AsyncSocket* socket_;
     66 
     67   DISALLOW_EVIL_CONSTRUCTORS(SocketStream);
     68 };
     69 
     70 ///////////////////////////////////////////////////////////////////////////////
     71 
     72 }  // namespace talk_base
     73 
     74 #endif  // TALK_BASE_SOCKETSTREAM_H_
     75