1 /*
2  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef WEBRTC_LIBJINGLE_XMPP_ASYNCSOCKET_H_
12 #define WEBRTC_LIBJINGLE_XMPP_ASYNCSOCKET_H_
13 
14 #include <string>
15 
16 #include "webrtc/base/sigslot.h"
17 
18 namespace rtc {
19   class SocketAddress;
20 }
21 
22 namespace buzz {
23 
24 class AsyncSocket {
25 public:
26   enum State {
27     STATE_CLOSED = 0,      //!< Socket is not open.
28     STATE_CLOSING,         //!< Socket is closing but can have buffered data
29     STATE_CONNECTING,      //!< In the process of
30     STATE_OPEN,            //!< Socket is connected
31 #if defined(FEATURE_ENABLE_SSL)
32     STATE_TLS_CONNECTING,  //!< Establishing TLS connection
33     STATE_TLS_OPEN,        //!< TLS connected
34 #endif
35   };
36 
37   enum Error {
38     ERROR_NONE = 0,         //!< No error
39     ERROR_WINSOCK,          //!< Winsock error
40     ERROR_DNS,              //!< Couldn't resolve host name
41     ERROR_WRONGSTATE,       //!< Call made while socket is in the wrong state
42 #if defined(FEATURE_ENABLE_SSL)
43     ERROR_SSL,              //!< Something went wrong with OpenSSL
44 #endif
45   };
46 
~AsyncSocket()47   virtual ~AsyncSocket() {}
48   virtual State state() = 0;
49   virtual Error error() = 0;
50   virtual int GetError() = 0;    // winsock error code
51 
52   virtual bool Connect(const rtc::SocketAddress& addr) = 0;
53   virtual bool Read(char * data, size_t len, size_t* len_read) = 0;
54   virtual bool Write(const char * data, size_t len) = 0;
55   virtual bool Close() = 0;
56 #if defined(FEATURE_ENABLE_SSL)
57   // We allow matching any passed domain.  This allows us to avoid
58   // handling the valuable certificates for logins into proxies.  If
59   // both names are passed as empty, we do not require a match.
60   virtual bool StartTls(const std::string & domainname) = 0;
61 #endif
62 
63   sigslot::signal0<> SignalConnected;
64   sigslot::signal0<> SignalSSLConnected;
65   sigslot::signal0<> SignalClosed;
66   sigslot::signal0<> SignalRead;
67   sigslot::signal0<> SignalError;
68 };
69 
70 }
71 
72 #endif  // WEBRTC_LIBJINGLE_XMPP_ASYNCSOCKET_H_
73