1 /* 2 * libjingle 3 * Copyright 2011, 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 PEERCONNECTION_SAMPLES_CLIENT_PEER_CONNECTION_CLIENT_H_ 29 #define PEERCONNECTION_SAMPLES_CLIENT_PEER_CONNECTION_CLIENT_H_ 30 #pragma once 31 32 #include <map> 33 #include <string> 34 35 #include "talk/base/nethelpers.h" 36 #include "talk/base/signalthread.h" 37 #include "talk/base/sigslot.h" 38 #include "talk/base/physicalsocketserver.h" 39 #include "talk/base/scoped_ptr.h" 40 41 typedef std::map<int, std::string> Peers; 42 43 struct PeerConnectionClientObserver { 44 virtual void OnSignedIn() = 0; // Called when we're logged on. 45 virtual void OnDisconnected() = 0; 46 virtual void OnPeerConnected(int id, const std::string& name) = 0; 47 virtual void OnPeerDisconnected(int peer_id) = 0; 48 virtual void OnMessageFromPeer(int peer_id, const std::string& message) = 0; 49 virtual void OnMessageSent(int err) = 0; 50 virtual void OnServerConnectionFailure() = 0; 51 52 protected: ~PeerConnectionClientObserverPeerConnectionClientObserver53 virtual ~PeerConnectionClientObserver() {} 54 }; 55 56 class PeerConnectionClient : public sigslot::has_slots<>, 57 public talk_base::MessageHandler { 58 public: 59 enum State { 60 NOT_CONNECTED, 61 RESOLVING, 62 SIGNING_IN, 63 CONNECTED, 64 SIGNING_OUT_WAITING, 65 SIGNING_OUT, 66 }; 67 68 PeerConnectionClient(); 69 ~PeerConnectionClient(); 70 71 int id() const; 72 bool is_connected() const; 73 const Peers& peers() const; 74 75 void RegisterObserver(PeerConnectionClientObserver* callback); 76 77 void Connect(const std::string& server, int port, 78 const std::string& client_name); 79 80 bool SendToPeer(int peer_id, const std::string& message); 81 bool SendHangUp(int peer_id); 82 bool IsSendingMessage(); 83 84 bool SignOut(); 85 86 // implements the MessageHandler interface 87 void OnMessage(talk_base::Message* msg); 88 89 protected: 90 void DoConnect(); 91 void Close(); 92 void InitSocketSignals(); 93 bool ConnectControlSocket(); 94 void OnConnect(talk_base::AsyncSocket* socket); 95 void OnHangingGetConnect(talk_base::AsyncSocket* socket); 96 void OnMessageFromPeer(int peer_id, const std::string& message); 97 98 // Quick and dirty support for parsing HTTP header values. 99 bool GetHeaderValue(const std::string& data, size_t eoh, 100 const char* header_pattern, size_t* value); 101 102 bool GetHeaderValue(const std::string& data, size_t eoh, 103 const char* header_pattern, std::string* value); 104 105 // Returns true if the whole response has been read. 106 bool ReadIntoBuffer(talk_base::AsyncSocket* socket, std::string* data, 107 size_t* content_length); 108 109 void OnRead(talk_base::AsyncSocket* socket); 110 111 void OnHangingGetRead(talk_base::AsyncSocket* socket); 112 113 // Parses a single line entry in the form "<name>,<id>,<connected>" 114 bool ParseEntry(const std::string& entry, std::string* name, int* id, 115 bool* connected); 116 117 int GetResponseStatus(const std::string& response); 118 119 bool ParseServerResponse(const std::string& response, size_t content_length, 120 size_t* peer_id, size_t* eoh); 121 122 void OnClose(talk_base::AsyncSocket* socket, int err); 123 124 void OnResolveResult(talk_base::AsyncResolverInterface* resolver); 125 126 PeerConnectionClientObserver* callback_; 127 talk_base::SocketAddress server_address_; 128 talk_base::AsyncResolver* resolver_; 129 talk_base::scoped_ptr<talk_base::AsyncSocket> control_socket_; 130 talk_base::scoped_ptr<talk_base::AsyncSocket> hanging_get_; 131 std::string onconnect_data_; 132 std::string control_data_; 133 std::string notification_data_; 134 std::string client_name_; 135 Peers peers_; 136 State state_; 137 int my_id_; 138 }; 139 140 #endif // PEERCONNECTION_SAMPLES_CLIENT_PEER_CONNECTION_CLIENT_H_ 141