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 TALK_EXAMPLES_PEERCONNECTION_SERVER_PEER_CHANNEL_H_ 29 #define TALK_EXAMPLES_PEERCONNECTION_SERVER_PEER_CHANNEL_H_ 30 #pragma once 31 32 #include <time.h> 33 34 #include <queue> 35 #include <string> 36 #include <vector> 37 38 class DataSocket; 39 40 // Represents a single peer connected to the server. 41 class ChannelMember { 42 public: 43 explicit ChannelMember(DataSocket* socket); 44 ~ChannelMember(); 45 46 bool connected() const { return connected_; } 47 int id() const { return id_; } 48 void set_disconnected() { connected_ = false; } 49 bool is_wait_request(DataSocket* ds) const; 50 const std::string& name() const { return name_; } 51 52 bool TimedOut(); 53 54 std::string GetPeerIdHeader() const; 55 56 bool NotifyOfOtherMember(const ChannelMember& other); 57 58 // Returns a string in the form "name,id\n". 59 std::string GetEntry() const; 60 61 void ForwardRequestToPeer(DataSocket* ds, ChannelMember* peer); 62 63 void OnClosing(DataSocket* ds); 64 65 void QueueResponse(const std::string& status, const std::string& content_type, 66 const std::string& extra_headers, const std::string& data); 67 68 void SetWaitingSocket(DataSocket* ds); 69 70 protected: 71 struct QueuedResponse { 72 std::string status, content_type, extra_headers, data; 73 }; 74 75 DataSocket* waiting_socket_; 76 int id_; 77 bool connected_; 78 time_t timestamp_; 79 std::string name_; 80 std::queue<QueuedResponse> queue_; 81 static int s_member_id_; 82 }; 83 84 // Manages all currently connected peers. 85 class PeerChannel { 86 public: 87 typedef std::vector<ChannelMember*> Members; 88 89 PeerChannel() { 90 } 91 92 ~PeerChannel() { 93 DeleteAll(); 94 } 95 96 const Members& members() const { return members_; } 97 98 // Returns true if the request should be treated as a new ChannelMember 99 // request. Otherwise the request is not peerconnection related. 100 static bool IsPeerConnection(const DataSocket* ds); 101 102 // Finds a connected peer that's associated with the |ds| socket. 103 ChannelMember* Lookup(DataSocket* ds) const; 104 105 // Checks if the request has a "peer_id" parameter and if so, looks up the 106 // peer for which the request is targeted at. 107 ChannelMember* IsTargetedRequest(const DataSocket* ds) const; 108 109 // Adds a new ChannelMember instance to the list of connected peers and 110 // associates it with the socket. 111 bool AddMember(DataSocket* ds); 112 113 // Closes all connections and sends a "shutting down" message to all 114 // connected peers. 115 void CloseAll(); 116 117 // Called when a socket was determined to be closing by the peer (or if the 118 // connection went dead). 119 void OnClosing(DataSocket* ds); 120 121 void CheckForTimeout(); 122 123 protected: 124 void DeleteAll(); 125 void BroadcastChangedState(const ChannelMember& member, 126 Members* delivery_failures); 127 void HandleDeliveryFailures(Members* failures); 128 129 // Builds a simple list of "name,id\n" entries for each member. 130 std::string BuildResponseForNewMember(const ChannelMember& member, 131 std::string* content_type); 132 133 protected: 134 Members members_; 135 }; 136 137 #endif // TALK_EXAMPLES_PEERCONNECTION_SERVER_PEER_CHANNEL_H_ 138