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28 #ifndef _ASYNCSOCKET_H_
29 #define _ASYNCSOCKET_H_
31 #include "talk/base/sigslot.h"
42 STATE_CLOSED = 0, //!< Socket is not open.
43 STATE_CLOSING, //!< Socket is closing but can have buffered data
44 STATE_CONNECTING, //!< In the process of
45 STATE_OPEN, //!< Socket is connected
46 #if defined(FEATURE_ENABLE_SSL)
47 STATE_TLS_CONNECTING, //!< Establishing TLS connection
48 STATE_TLS_OPEN, //!< TLS connected
53 ERROR_NONE = 0, //!< No error
54 ERROR_WINSOCK, //!< Winsock error
55 ERROR_DNS, //!< Couldn't resolve host name
56 ERROR_WRONGSTATE, //!< Call made while socket is in the wrong state
57 #if defined(FEATURE_ENABLE_SSL)
58 ERROR_SSL, //!< Something went wrong with OpenSSL
62 virtual ~AsyncSocket() {}
63 virtual State state() = 0;
64 virtual Error error() = 0;
65 virtual int GetError() = 0; // winsock error code
67 virtual bool Connect(const talk_base::SocketAddress& addr) = 0;
68 virtual bool Read(char * data, size_t len, size_t* len_read) = 0;
69 virtual bool Write(const char * data, size_t len) = 0;
70 virtual bool Close() = 0;
71 #if defined(FEATURE_ENABLE_SSL)
72 // We allow matching any passed domain. This allows us to avoid
73 // handling the valuable certificates for logins into proxies. If
74 // both names are passed as empty, we do not require a match.
75 virtual bool StartTls(const std::string & domainname) = 0;
78 sigslot::signal0<> SignalConnected;
79 sigslot::signal0<> SignalSSLConnected;
80 sigslot::signal0<> SignalClosed;
81 sigslot::signal0<> SignalRead;
82 sigslot::signal0<> SignalError;