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Diffstat (limited to 'webrtc/p2p/base/tcpport.h')
| -rw-r--r-- | webrtc/p2p/base/tcpport.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/webrtc/p2p/base/tcpport.h b/webrtc/p2p/base/tcpport.h new file mode 100644 index 0000000000..a64c5eeab9 --- /dev/null +++ b/webrtc/p2p/base/tcpport.h @@ -0,0 +1,182 @@ +/* + * Copyright 2004 The WebRTC Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef WEBRTC_P2P_BASE_TCPPORT_H_ +#define WEBRTC_P2P_BASE_TCPPORT_H_ + +#include <list> +#include <string> +#include "webrtc/p2p/base/port.h" +#include "webrtc/base/asyncpacketsocket.h" + +namespace cricket { + +class TCPConnection; + +// Communicates using a local TCP port. +// +// This class is designed to allow subclasses to take advantage of the +// connection management provided by this class. A subclass should take of all +// packet sending and preparation, but when a packet is received, it should +// call this TCPPort::OnReadPacket (3 arg) to dispatch to a connection. +class TCPPort : public Port { + public: + static TCPPort* Create(rtc::Thread* thread, + rtc::PacketSocketFactory* factory, + rtc::Network* network, + const rtc::IPAddress& ip, + uint16_t min_port, + uint16_t max_port, + const std::string& username, + const std::string& password, + bool allow_listen) { + TCPPort* port = new TCPPort(thread, factory, network, ip, min_port, + max_port, username, password, allow_listen); + if (!port->Init()) { + delete port; + port = NULL; + } + return port; + } + virtual ~TCPPort(); + + virtual Connection* CreateConnection(const Candidate& address, + CandidateOrigin origin); + + virtual void PrepareAddress(); + + virtual int GetOption(rtc::Socket::Option opt, int* value); + virtual int SetOption(rtc::Socket::Option opt, int value); + virtual int GetError(); + + protected: + TCPPort(rtc::Thread* thread, + rtc::PacketSocketFactory* factory, + rtc::Network* network, + const rtc::IPAddress& ip, + uint16_t min_port, + uint16_t max_port, + const std::string& username, + const std::string& password, + bool allow_listen); + bool Init(); + + // Handles sending using the local TCP socket. + virtual int SendTo(const void* data, size_t size, + const rtc::SocketAddress& addr, + const rtc::PacketOptions& options, + bool payload); + + // Accepts incoming TCP connection. + void OnNewConnection(rtc::AsyncPacketSocket* socket, + rtc::AsyncPacketSocket* new_socket); + + private: + struct Incoming { + rtc::SocketAddress addr; + rtc::AsyncPacketSocket* socket; + }; + + rtc::AsyncPacketSocket* GetIncoming( + const rtc::SocketAddress& addr, bool remove = false); + + // Receives packet signal from the local TCP Socket. + void OnReadPacket(rtc::AsyncPacketSocket* socket, + const char* data, size_t size, + const rtc::SocketAddress& remote_addr, + const rtc::PacketTime& packet_time); + + void OnReadyToSend(rtc::AsyncPacketSocket* socket); + + void OnAddressReady(rtc::AsyncPacketSocket* socket, + const rtc::SocketAddress& address); + + // TODO: Is this still needed? + bool incoming_only_; + bool allow_listen_; + rtc::AsyncPacketSocket* socket_; + int error_; + std::list<Incoming> incoming_; + + friend class TCPConnection; +}; + +class TCPConnection : public Connection { + public: + // Connection is outgoing unless socket is specified + TCPConnection(TCPPort* port, const Candidate& candidate, + rtc::AsyncPacketSocket* socket = 0); + virtual ~TCPConnection(); + + virtual int Send(const void* data, size_t size, + const rtc::PacketOptions& options); + virtual int GetError(); + + rtc::AsyncPacketSocket* socket() { return socket_.get(); } + + void OnMessage(rtc::Message* pmsg); + + // Allow test cases to overwrite the default timeout period. + int reconnection_timeout() const { return reconnection_timeout_; } + void set_reconnection_timeout(int timeout_in_ms) { + reconnection_timeout_ = timeout_in_ms; + } + + protected: + enum { + MSG_TCPCONNECTION_DELAYED_ONCLOSE = Connection::MSG_FIRST_AVAILABLE, + }; + + // Set waiting_for_stun_binding_complete_ to false to allow data packets in + // addition to what Port::OnConnectionRequestResponse does. + virtual void OnConnectionRequestResponse(ConnectionRequest* req, + StunMessage* response); + + private: + // Helper function to handle the case when Ping or Send fails with error + // related to socket close. + void MaybeReconnect(); + + void CreateOutgoingTcpSocket(); + + void ConnectSocketSignals(rtc::AsyncPacketSocket* socket); + + void OnConnect(rtc::AsyncPacketSocket* socket); + void OnClose(rtc::AsyncPacketSocket* socket, int error); + void OnReadPacket(rtc::AsyncPacketSocket* socket, + const char* data, size_t size, + const rtc::SocketAddress& remote_addr, + const rtc::PacketTime& packet_time); + void OnReadyToSend(rtc::AsyncPacketSocket* socket); + + rtc::scoped_ptr<rtc::AsyncPacketSocket> socket_; + int error_; + bool outgoing_; + + // Guard against multiple outgoing tcp connection during a reconnect. + bool connection_pending_; + + // Guard against data packets sent when we reconnect a TCP connection. During + // reconnecting, when a new tcp connection has being made, we can't send data + // packets out until the STUN binding is completed (i.e. the write state is + // set to WRITABLE again by Connection::OnConnectionRequestResponse). IPC + // socket, when receiving data packets before that, will trigger OnError which + // will terminate the newly created connection. + bool pretending_to_be_writable_; + + // Allow test case to overwrite the default timeout period. + int reconnection_timeout_; + + friend class TCPPort; +}; + +} // namespace cricket + +#endif // WEBRTC_P2P_BASE_TCPPORT_H_ |