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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, 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 _XMPPSOCKET_H_
     29 #define _XMPPSOCKET_H_
     30 
     31 #include "talk/base/asyncsocket.h"
     32 #include "talk/base/bytebuffer.h"
     33 #include "talk/base/sigslot.h"
     34 #include "talk/xmpp/asyncsocket.h"
     35 
     36 // The below define selects the SSLStreamAdapter implementation for
     37 // SSL, as opposed to the SSLAdapter socket adapter.
     38 // #define USE_SSLSTREAM
     39 
     40 namespace talk_base {
     41   class StreamInterface;
     42 };
     43 extern talk_base::AsyncSocket* cricket_socket_;
     44 
     45 class XmppSocket : public buzz::AsyncSocket, public sigslot::has_slots<> {
     46 public:
     47   XmppSocket(bool tls);
     48   ~XmppSocket();
     49 
     50   virtual buzz::AsyncSocket::State state();
     51   virtual buzz::AsyncSocket::Error error();
     52   virtual int GetError();
     53 
     54   virtual bool Connect(const talk_base::SocketAddress& addr);
     55   virtual bool Read(char * data, size_t len, size_t* len_read);
     56   virtual bool Write(const char * data, size_t len);
     57   virtual bool Close();
     58   virtual bool StartTls(const std::string & domainname);
     59 
     60   sigslot::signal1<int> SignalCloseEvent;
     61 
     62 private:
     63 #ifndef USE_SSLSTREAM
     64   void OnReadEvent(talk_base::AsyncSocket * socket);
     65   void OnWriteEvent(talk_base::AsyncSocket * socket);
     66   void OnConnectEvent(talk_base::AsyncSocket * socket);
     67   void OnCloseEvent(talk_base::AsyncSocket * socket, int error);
     68 #else  // USE_SSLSTREAM
     69   void OnEvent(talk_base::StreamInterface* stream, int events, int err);
     70 #endif  // USE_SSLSTREAM
     71 
     72   talk_base::AsyncSocket * cricket_socket_;
     73 #ifdef USE_SSLSTREAM
     74   talk_base::StreamInterface *stream_;
     75 #endif  // USE_SSLSTREAM
     76   buzz::AsyncSocket::State state_;
     77   talk_base::ByteBuffer buffer_;
     78   bool tls_;
     79 };
     80 
     81 #endif // _XMPPSOCKET_H_
     82