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
18namespace rtc {
19  class SocketAddress;
20}
21
22namespace buzz {
23
24class AsyncSocket {
25public:
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
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