1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Christoph Renner rennerc@ee.ethz.ch |
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13 | co-programmer: Patrick Boenzli boenzlip@orxonox.ethz.ch |
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14 | |
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15 | June 2006: finishing work on the network stream for pps presentation (rennerc@ee.ethz.ch) |
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16 | July 2006: some code rearangement and integration of the proxy server mechanism (boenzlip@ee.ethz.ch) |
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17 | */ |
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18 | |
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19 | |
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20 | #define DEBUG_MODULE_NETWORK |
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21 | |
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22 | |
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23 | #include "base_object.h" |
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24 | #include "network_protocol.h" |
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25 | #include "udp_socket.h" |
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26 | #include "udp_server_socket.h" |
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27 | #include "monitor/connection_monitor.h" |
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28 | #include "monitor/network_monitor.h" |
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29 | #include "synchronizeable.h" |
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30 | #include "ip.h" |
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31 | #include "network_game_manager.h" |
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32 | #include "shared_network_data.h" |
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33 | #include "message_manager.h" |
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34 | #include "preferences.h" |
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35 | #include "zip.h" |
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36 | |
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37 | #include "src/lib/util/loading/resource_manager.h" |
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38 | |
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39 | #include "network_log.h" |
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40 | |
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41 | #include "player_stats.h" |
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42 | |
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43 | #include "lib/util/loading/factory.h" |
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44 | |
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45 | #include "debug.h" |
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46 | #include "class_list.h" |
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47 | #include <algorithm> |
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48 | |
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49 | |
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50 | #include "network_stream.h" |
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51 | |
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52 | |
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53 | #include "converter.h" |
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54 | |
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55 | |
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56 | #define PACKAGE_SIZE 256 |
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57 | |
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58 | |
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59 | /** |
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60 | * empty constructor |
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61 | */ |
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62 | NetworkStream::NetworkStream() |
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63 | : DataStream() |
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64 | { |
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65 | this->init(); |
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66 | /* initialize the references */ |
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67 | this->pInfo->nodeType = NET_UNASSIGNED; |
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68 | } |
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69 | |
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70 | |
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71 | NetworkStream::NetworkStream( int nodeType) |
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72 | { |
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73 | this->init(); |
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74 | |
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75 | this->pInfo->nodeType = nodeType; |
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76 | |
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77 | switch( nodeType) |
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78 | { |
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79 | case NET_MASTER_SERVER: |
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80 | // init the shared network data |
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81 | SharedNetworkData::getInstance()->setHostID(NET_ID_MASTER_SERVER); |
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82 | break; |
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83 | |
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84 | case NET_PROXY_SERVER_ACTIVE: |
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85 | // init the shared network data |
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86 | SharedNetworkData::getInstance()->setHostID(NET_ID_PROXY_SERVER_01); |
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87 | break; |
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88 | case NET_PROXY_SERVER_PASSIVE: |
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89 | // init the shared network data |
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90 | SharedNetworkData::getInstance()->setHostID(NET_ID_PROXY_SERVER_01); |
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91 | break; |
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92 | case NET_CLIENT: |
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93 | SharedNetworkData::getInstance()->setHostID(NET_ID_UNASSIGNED); |
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94 | break; |
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95 | } |
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96 | |
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97 | SharedNetworkData::getInstance()->setDefaultSyncStream(this); |
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98 | |
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99 | // get the local ip address |
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100 | IPaddress ip; |
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101 | SDLNet_ResolveHost( &ip, NULL, 0); |
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102 | this->pInfo->ip = ip; |
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103 | } |
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104 | |
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105 | |
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106 | |
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107 | /** |
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108 | * generic init functions |
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109 | */ |
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110 | void NetworkStream::init() |
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111 | { |
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112 | /* set the class id for the base object */ |
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113 | this->setClassID(CL_NETWORK_STREAM, "NetworkStream"); |
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114 | this->clientSocket = NULL; |
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115 | this->proxySocket = NULL; |
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116 | this->networkGameManager = NULL; |
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117 | this->networkMonitor = NULL; |
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118 | |
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119 | this->pInfo = new PeerInfo(); |
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120 | this->pInfo->userId = 0; |
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121 | this->pInfo->lastAckedState = 0; |
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122 | this->pInfo->lastRecvedState = 0; |
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123 | |
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124 | this->bRedirect = false; |
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125 | |
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126 | this->currentState = 0; |
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127 | |
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128 | remainingBytesToWriteToDict = Preferences::getInstance()->getInt( "compression", "writedict", 0 ); |
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129 | |
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130 | assert( Zip::getInstance()->loadDictionary( "testdict" ) >= 0 ); |
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131 | this->dictClient = Zip::getInstance()->loadDictionary( "dict2pl_client" ); |
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132 | assert( this->dictClient >= 0 ); |
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133 | this->dictServer = Zip::getInstance()->loadDictionary( "dict2p_server" ); |
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134 | assert( this->dictServer >= 0 ); |
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135 | } |
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136 | |
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137 | |
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138 | /** |
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139 | * deconstructor |
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140 | */ |
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141 | NetworkStream::~NetworkStream() |
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142 | { |
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143 | if ( this->clientSocket ) |
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144 | { |
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145 | clientSocket->close(); |
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146 | delete clientSocket; |
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147 | clientSocket = NULL; |
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148 | } |
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149 | if ( this->proxySocket) |
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150 | { |
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151 | proxySocket->close(); |
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152 | delete proxySocket; |
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153 | proxySocket = NULL; |
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154 | } |
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155 | for ( PeerList::iterator i = peers.begin(); i!=peers.end(); i++) |
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156 | { |
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157 | if ( i->second.socket ) |
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158 | { |
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159 | i->second.socket->disconnectServer(); |
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160 | delete i->second.socket; |
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161 | i->second.socket = NULL; |
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162 | } |
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163 | |
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164 | if ( i->second.handshake ) |
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165 | { |
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166 | delete i->second.handshake; |
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167 | i->second.handshake = NULL; |
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168 | } |
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169 | |
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170 | if ( i->second.connectionMonitor ) |
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171 | { |
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172 | delete i->second.connectionMonitor; |
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173 | i->second.connectionMonitor = NULL; |
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174 | } |
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175 | } |
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176 | for ( SynchronizeableList::const_iterator it = getSyncBegin(); it != getSyncEnd(); it ++ ) |
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177 | (*it)->setNetworkStream( NULL ); |
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178 | |
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179 | if( this->pInfo) |
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180 | delete this->pInfo; |
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181 | |
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182 | if( this->networkMonitor) |
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183 | delete this->networkMonitor; |
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184 | } |
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185 | |
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186 | |
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187 | /** |
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188 | * establish a connection to a remote master server |
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189 | * @param host: host name |
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190 | * @param port: the port number |
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191 | */ |
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192 | void NetworkStream::connectToMasterServer(std::string host, int port) |
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193 | { |
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194 | int node = NET_ID_MASTER_SERVER; |
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195 | // this create the new node in the peers map |
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196 | this->peers[node].socket = new UdpSocket( host, port ); |
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197 | this->peers[node].userId = NET_ID_MASTER_SERVER; |
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198 | |
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199 | this->peers[node].nodeType = NET_MASTER_SERVER; |
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200 | this->peers[node].connectionMonitor = new ConnectionMonitor( NET_ID_MASTER_SERVER ); |
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201 | this->peers[node].ip = this->peers[node].socket->getRemoteAddress(); |
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202 | } |
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203 | |
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204 | |
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205 | /** |
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206 | * establish a connection to a remote proxy server |
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207 | * @param host: host name |
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208 | * @param port: the port number |
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209 | */ |
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210 | void NetworkStream::connectToProxyServer(int proxyId, std::string host, int port) |
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211 | { |
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212 | PRINTF(0)("connect to proxy %s, this is proxyId %i\n", host.c_str(), proxyId); |
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213 | |
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214 | // this creates the new proxyId in the peers map |
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215 | this->peers[proxyId].socket = new UdpSocket( host, port ); |
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216 | this->peers[proxyId].userId = proxyId; |
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217 | |
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218 | this->peers[proxyId].nodeType = NET_PROXY_SERVER_ACTIVE; |
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219 | this->peers[proxyId].connectionMonitor = new ConnectionMonitor( proxyId ); |
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220 | this->peers[proxyId].ip = this->peers[proxyId].socket->getRemoteAddress(); |
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221 | } |
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222 | |
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223 | |
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224 | /** |
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225 | * create a server |
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226 | * @param port: interface port for all clients |
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227 | */ |
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228 | void NetworkStream::createServer(int clientPort, int proxyPort) |
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229 | { |
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230 | PRINTF(0)(" Creating new Server: listening for clients on port %i and for proxies on port %i", clientPort, proxyPort); |
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231 | this->clientSocket= new UdpServerSocket(clientPort); |
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232 | this->proxySocket = new UdpServerSocket(proxyPort); |
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233 | } |
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234 | |
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235 | |
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236 | /** |
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237 | * creates a new instance of the network game manager |
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238 | */ |
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239 | void NetworkStream::createNetworkGameManager() |
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240 | { |
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241 | this->networkGameManager = NetworkGameManager::getInstance(); |
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242 | |
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243 | this->networkGameManager->setUniqueID( SharedNetworkData::getInstance()->getNewUniqueID() ); |
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244 | MessageManager::getInstance()->setUniqueID( SharedNetworkData::getInstance()->getNewUniqueID() ); |
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245 | } |
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246 | |
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247 | |
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248 | /** |
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249 | * starts the network handshake |
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250 | * handsakes are always initialized from the client side first. this starts the handshake and therefore is only |
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251 | * executed as client |
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252 | * @param userId: start handshake for this user id (optional, default == 0) |
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253 | */ |
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254 | void NetworkStream::startHandshake(int userId) |
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255 | { |
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256 | Handshake* hs = new Handshake(this->pInfo->nodeType); |
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257 | // fake the unique id |
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258 | hs->setUniqueID( NET_UID_HANDSHAKE ); |
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259 | assert( peers[userId].handshake == NULL ); |
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260 | peers[userId].handshake = hs; |
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261 | |
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262 | // set the preferred nick name |
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263 | hs->setPreferedNickName( Preferences::getInstance()->getString( "multiplayer", "nickname", "Player" ) ); |
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264 | |
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265 | PRINTF(0)("NetworkStream: Handshake created: %s\n", hs->getCName()); |
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266 | } |
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267 | |
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268 | |
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269 | /** |
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270 | * this functions connects a synchronizeable to the networkstream, therefore synchronizeing |
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271 | * it all over the network and creating it on the other platforms (if and only if it is a |
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272 | * server |
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273 | * @param sync: the synchronizeable to add |
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274 | */ |
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275 | void NetworkStream::connectSynchronizeable(Synchronizeable& sync) |
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276 | { |
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277 | this->synchronizeables.push_back(&sync); |
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278 | sync.setNetworkStream( this ); |
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279 | } |
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280 | |
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281 | |
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282 | /** |
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283 | * removes the synchronizeable from the list of synchronized entities |
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284 | * @param sync: the syncronizeable to remove |
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285 | */ |
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286 | void NetworkStream::disconnectSynchronizeable(Synchronizeable& sync) |
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287 | { |
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288 | // removing the Synchronizeable from the List. |
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289 | std::list<Synchronizeable*>::iterator disconnectSynchro = std::find(this->synchronizeables.begin(), this->synchronizeables.end(), &sync); |
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290 | if (disconnectSynchro != this->synchronizeables.end()) |
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291 | this->synchronizeables.erase(disconnectSynchro); |
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292 | |
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293 | oldSynchronizeables[sync.getUniqueID()] = SDL_GetTicks(); |
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294 | } |
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295 | |
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296 | |
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297 | /** |
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298 | * this is called to process data from the network socket to the synchronizeable and vice versa |
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299 | */ |
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300 | void NetworkStream::processData() |
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301 | { |
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302 | // create the network monitor after all the init work and before there is any connection handlings |
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303 | if( this->networkMonitor == NULL) |
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304 | this->networkMonitor = new NetworkMonitor(this); |
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305 | |
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306 | |
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307 | int tick = SDL_GetTicks(); |
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308 | |
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309 | this->currentState++; |
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310 | // there was a wrap around |
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311 | if( this->currentState < 0) |
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312 | { |
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313 | PRINTF(1)("A wrap around in the state variable as occured. The server was running so long? Pls restart server or write a mail to the supporters!\n"); |
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314 | } |
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315 | |
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316 | if ( SharedNetworkData::getInstance()->isMasterServer()) |
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317 | { |
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318 | // execute everytthing the master server shoudl do |
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319 | if ( this->clientSocket ) |
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320 | this->clientSocket->update(); |
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321 | if( this->proxySocket) |
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322 | this->proxySocket->update(); |
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323 | |
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324 | this->updateConnectionList(); |
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325 | } |
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326 | else if( SharedNetworkData::getInstance()->isProxyServerActive()) |
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327 | { |
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328 | //execute everything the proxy server should do |
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329 | if ( this->clientSocket ) |
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330 | this->clientSocket->update(); |
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331 | if( this->proxySocket) |
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332 | this->proxySocket->update(); |
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333 | |
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334 | this->updateConnectionList(); |
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335 | } |
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336 | |
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337 | #warning make this more modular: every proxy/master server connection should be watched for termination |
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338 | if( !SharedNetworkData::getInstance()->isMasterServer()) |
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339 | { |
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340 | // check if the connection is ok else terminate and remove |
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341 | if ( !peers.empty() && peers[NET_ID_MASTER_SERVER].socket && |
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342 | ( !peers[NET_ID_MASTER_SERVER].socket->isOk() || |
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343 | peers[NET_ID_MASTER_SERVER].connectionMonitor->hasTimedOut() ) ) |
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344 | { |
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345 | this->handleDisconnect( NET_ID_MASTER_SERVER); |
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346 | PRINTF(1)("lost connection to server\n"); |
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347 | } |
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348 | // check if there is a redirection command |
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349 | if( this->bRedirect) |
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350 | { |
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351 | this->handleReconnect( NET_ID_MASTER_SERVER); |
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352 | } |
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353 | } |
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354 | |
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355 | this->cleanUpOldSyncList(); |
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356 | this->handleHandshakes(); |
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357 | |
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358 | // update the network monitor |
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359 | this->networkMonitor->process(); |
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360 | |
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361 | // order of up/downstream is important!!!! |
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362 | // don't change it |
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363 | this->handleDownstream( tick ); |
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364 | this->handleUpstream( tick ); |
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365 | } |
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366 | |
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367 | |
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368 | /** |
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369 | * @brief handles incoming connections |
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370 | * |
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371 | * if we are a NET_MASTER_SERVER or NET_PROXY_SERVER_ACTIVE update the connection list to accept new connections (clients) |
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372 | * start and initialize the handsake for the new clients |
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373 | */ |
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374 | void NetworkStream::updateConnectionList( ) |
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375 | { |
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376 | //check for new connections |
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377 | |
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378 | NetworkSocket* tempNetworkSocket = NULL; |
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379 | int userId; |
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380 | |
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381 | if( this->clientSocket != NULL) |
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382 | { |
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383 | tempNetworkSocket = this->clientSocket->getNewSocket(); |
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384 | |
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385 | // we got new NET_CLIENT connecting |
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386 | if ( tempNetworkSocket ) |
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387 | { |
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388 | // determine the network node id |
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389 | if ( freeSocketSlots.size() > 0 ) |
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390 | { |
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391 | userId = freeSocketSlots.back(); |
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392 | freeSocketSlots.pop_back(); |
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393 | } |
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394 | else |
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395 | { |
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396 | userId = 1; |
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397 | |
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398 | for ( PeerList::iterator it = peers.begin(); it != peers.end(); it++ ) |
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399 | if ( it->first >= userId ) |
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400 | userId = it->first + 1; |
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401 | } |
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402 | // this creates a new entry in the peers list |
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403 | peers[userId].socket = tempNetworkSocket; |
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404 | peers[userId].nodeType = NET_CLIENT; |
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405 | |
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406 | // handle the newly connected client |
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407 | this->handleConnect(userId); |
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408 | |
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409 | PRINTF(0)("New Client: %d\n", userId); |
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410 | } |
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411 | } |
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412 | |
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413 | |
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414 | if( this->proxySocket != NULL) |
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415 | { |
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416 | tempNetworkSocket = this->proxySocket->getNewSocket(); |
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417 | |
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418 | // we got new NET_PROXY_SERVER_ACTIVE connecting |
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419 | if ( tempNetworkSocket ) |
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420 | { |
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421 | // determine the network node id |
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422 | if ( freeSocketSlots.size() > 0 ) |
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423 | { |
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424 | userId = freeSocketSlots.back(); |
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425 | freeSocketSlots.pop_back(); |
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426 | } |
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427 | else |
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428 | { |
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429 | userId = 1; |
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430 | |
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431 | for ( PeerList::iterator it = peers.begin(); it != peers.end(); it++ ) |
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432 | if ( it->first >= userId ) |
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433 | userId = it->first + 1; |
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434 | } |
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435 | |
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436 | // this creates a new entry in the peers list |
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437 | peers[userId].socket = tempNetworkSocket; |
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438 | peers[userId].nodeType = NET_PROXY_SERVER_ACTIVE; |
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439 | |
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440 | // handle the newly connected proxy server |
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441 | this->handleConnect(userId); |
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442 | |
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443 | PRINTF(0)("New proxy connected: %d\n", userId); |
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444 | } |
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445 | } |
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446 | |
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447 | |
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448 | //check if connections are ok else remove them |
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449 | for ( PeerList::iterator it = peers.begin(); it != peers.end(); ) |
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450 | { |
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451 | if ( |
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452 | it->second.socket && |
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453 | ( |
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454 | !it->second.socket->isOk() || |
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455 | it->second.connectionMonitor->hasTimedOut() |
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456 | ) |
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457 | ) |
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458 | { |
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459 | std::string reason = "disconnected"; |
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460 | if ( it->second.connectionMonitor->hasTimedOut() ) |
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461 | reason = "timeout"; |
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462 | PRINTF(0)("Client is gone: %d (%s)\n", it->second.userId, reason.c_str()); |
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463 | |
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464 | this->handleDisconnect( it->second.userId); |
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465 | |
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466 | it++; |
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467 | continue; |
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468 | } |
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469 | |
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470 | it++; |
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471 | } |
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472 | |
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473 | |
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474 | } |
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475 | |
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476 | |
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477 | /** |
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478 | * this handles new connections |
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479 | * @param userId: the id of the new user node |
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480 | */ |
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481 | void NetworkStream::handleConnect( int userId) |
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482 | { |
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483 | // create new handshake and init its variables |
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484 | peers[userId].handshake = new Handshake(this->pInfo->nodeType, userId, this->networkGameManager->getUniqueID(), MessageManager::getInstance()->getUniqueID()); |
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485 | peers[userId].handshake->setUniqueID(userId); |
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486 | |
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487 | peers[userId].connectionMonitor = new ConnectionMonitor( userId ); |
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488 | peers[userId].userId = userId; |
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489 | |
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490 | PRINTF(0)("num sync: %d\n", synchronizeables.size()); |
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491 | |
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492 | // get the proxy server informations and write them to the handshake, if any (proxy) |
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493 | assert( this->networkMonitor != NULL); |
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494 | PeerInfo* pi = this->networkMonitor->getFirstChoiceProxy(); |
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495 | if( pi != NULL) |
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496 | { |
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497 | peers[userId].handshake->setProxy1Address( pi->ip); |
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498 | } |
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499 | pi = this->networkMonitor->getSecondChoiceProxy(); |
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500 | if( pi != NULL) |
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501 | peers[userId].handshake->setProxy2Address( pi->ip); |
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502 | |
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503 | // check if the connecting client should reconnect to a proxy server |
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504 | peers[userId].handshake->setRedirect(this->networkMonitor->isReconnectNextClient()); |
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505 | |
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506 | // the connecting node of course is a client |
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507 | peers[userId].ip = peers[userId].socket->getRemoteAddress(); |
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508 | } |
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509 | |
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510 | |
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511 | |
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512 | /** |
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513 | * some debug output |
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514 | */ |
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515 | void NetworkStream::debug() |
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516 | { |
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517 | if( SharedNetworkData::getInstance()->isMasterServer()) { |
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518 | PRINT(0)(" Host ist Master Server with ID: %i\n", this->pInfo->userId); |
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519 | } |
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520 | else if( SharedNetworkData::getInstance()->isProxyServerActive()) { |
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521 | PRINT(0)(" Host ist Proxy Server with ID: %i\n", this->pInfo->userId); |
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522 | } |
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523 | else { |
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524 | PRINT(0)(" Host ist Client with ID: %i\n", this->pInfo->userId); |
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525 | } |
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526 | |
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527 | PRINT(0)(" Got %i connected Synchronizeables, showing active Syncs:\n", this->synchronizeables.size()); |
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528 | for (SynchronizeableList::iterator it = synchronizeables.begin(); it!=synchronizeables.end(); it++) |
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529 | { |
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530 | if( (*it)->beSynchronized() == true) |
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531 | PRINT(0)(" Synchronizeable of class: %s::%s, with unique ID: %i, Synchronize: %i\n", (*it)->getClassCName(), (*it)->getCName(), |
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532 | (*it)->getUniqueID(), (*it)->beSynchronized()); |
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533 | } |
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534 | PRINT(0)(" Maximal Connections: %i\n", SharedNetworkData::getInstance()->getMaxPlayer() ); |
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535 | |
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536 | } |
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537 | |
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538 | |
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539 | /** |
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540 | * @returns the number of synchronizeables registered to this stream |
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541 | */ |
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542 | int NetworkStream::getSyncCount() |
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543 | { |
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544 | int n = 0; |
---|
545 | for (SynchronizeableList::iterator it = synchronizeables.begin(); it!=synchronizeables.end(); it++) |
---|
546 | if( (*it)->beSynchronized() == true) |
---|
547 | ++n; |
---|
548 | |
---|
549 | //return synchronizeables.size(); |
---|
550 | return n; |
---|
551 | } |
---|
552 | |
---|
553 | |
---|
554 | /** |
---|
555 | * check if handshakes completed. if so create the network game manager else remove it again |
---|
556 | */ |
---|
557 | void NetworkStream::handleHandshakes( ) |
---|
558 | { |
---|
559 | for ( PeerList::iterator it = peers.begin(); it != peers.end(); it++ ) |
---|
560 | { |
---|
561 | if ( it->second.handshake ) |
---|
562 | { |
---|
563 | // handshake finished |
---|
564 | if ( it->second.handshake->completed() ) |
---|
565 | { |
---|
566 | //handshake is correct |
---|
567 | if ( it->second.handshake->ok() ) |
---|
568 | { |
---|
569 | // write the first informations into the node so they can be read from there for case differentiation |
---|
570 | it->second.nodeType = it->second.handshake->getRemoteNodeType(); |
---|
571 | |
---|
572 | // the counter part didn't mark it free for deletion yet |
---|
573 | if ( !it->second.handshake->allowDel() ) |
---|
574 | { |
---|
575 | // make sure this is a connection: |
---|
576 | // - client <==> master server |
---|
577 | // - proxy server <==> master server |
---|
578 | if( SharedNetworkData::getInstance()->isClient() || SharedNetworkData::getInstance()->isProxyServerActive() && it->second.isMasterServer()) |
---|
579 | { |
---|
580 | PRINTF(0)("Handshake: i am in client role\n"); |
---|
581 | |
---|
582 | SharedNetworkData::getInstance()->setHostID( it->second.handshake->getHostId() ); |
---|
583 | this->pInfo->userId = SharedNetworkData::getInstance()->getHostID(); |
---|
584 | |
---|
585 | it->second.ip = it->second.socket->getRemoteAddress(); |
---|
586 | |
---|
587 | // it->second.nodeType = it->second.handshake->getRemoteNodeType(); |
---|
588 | // it->second.ip = it->second.socket->getRemoteAddress(); |
---|
589 | // add the new server to the nodes list (it can be a NET_MASTER_SERVER or NET_PROXY_SERVER) |
---|
590 | this->networkMonitor->addNode(&it->second); |
---|
591 | // get proxy 1 address and add it |
---|
592 | this->networkMonitor->addNode(it->second.handshake->getProxy1Address(), NET_PROXY_SERVER_ACTIVE); |
---|
593 | // get proxy 2 address and add it |
---|
594 | this->networkMonitor->addNode(it->second.handshake->getProxy2Address(), NET_PROXY_SERVER_ACTIVE); |
---|
595 | |
---|
596 | // now check if the server accepted the connection |
---|
597 | if( it->second.handshake->redirect() ) |
---|
598 | { |
---|
599 | this->bRedirect = true; |
---|
600 | } |
---|
601 | |
---|
602 | // create the new network game manager and init it |
---|
603 | this->networkGameManager = NetworkGameManager::getInstance(); |
---|
604 | this->networkGameManager->setUniqueID( it->second.handshake->getNetworkGameManagerId() ); |
---|
605 | // init the new message manager |
---|
606 | MessageManager::getInstance()->setUniqueID( it->second.handshake->getMessageManagerId() ); |
---|
607 | } |
---|
608 | |
---|
609 | PRINT(0)("handshake finished id=%d\n", it->second.handshake->getNetworkGameManagerId()); |
---|
610 | it->second.handshake->del(); |
---|
611 | |
---|
612 | } |
---|
613 | else |
---|
614 | { |
---|
615 | // handshake finished registring new player |
---|
616 | if ( it->second.handshake->canDel() ) |
---|
617 | { |
---|
618 | |
---|
619 | if ( SharedNetworkData::getInstance()->isMasterServer() ) |
---|
620 | { |
---|
621 | it->second.ip = it->second.socket->getRemoteAddress(); |
---|
622 | |
---|
623 | this->networkMonitor->addNode(&it->second); |
---|
624 | |
---|
625 | this->handleNewClient( it->second.userId ); |
---|
626 | |
---|
627 | if ( PlayerStats::getStats( it->second.userId ) && it->second.handshake->getPreferedNickName() != "" ) |
---|
628 | { |
---|
629 | PlayerStats::getStats( it->second.userId )->setNickName( it->second.handshake->getPreferedNickName() ); |
---|
630 | } |
---|
631 | } |
---|
632 | else if ( SharedNetworkData::getInstance()->isProxyServerActive() && it->second.isClient() ) |
---|
633 | { |
---|
634 | PRINTF(0)("Handshake: i am in server role\n"); |
---|
635 | |
---|
636 | it->second.ip = it->second.socket->getRemoteAddress(); |
---|
637 | |
---|
638 | this->networkMonitor->addNode(&it->second); |
---|
639 | |
---|
640 | this->handleNewClient( it->second.userId ); |
---|
641 | |
---|
642 | if ( PlayerStats::getStats( it->second.userId ) && it->second.handshake->getPreferedNickName() != "" ) |
---|
643 | { |
---|
644 | PlayerStats::getStats( it->second.userId )->setNickName( it->second.handshake->getPreferedNickName() ); |
---|
645 | } |
---|
646 | } |
---|
647 | |
---|
648 | PRINT(0)("handshake finished delete it\n"); |
---|
649 | delete it->second.handshake; |
---|
650 | it->second.handshake = NULL; |
---|
651 | } |
---|
652 | } |
---|
653 | |
---|
654 | } |
---|
655 | else |
---|
656 | { |
---|
657 | PRINT(1)("handshake failed!\n"); |
---|
658 | it->second.socket->disconnectServer(); |
---|
659 | } |
---|
660 | } |
---|
661 | } |
---|
662 | } |
---|
663 | } |
---|
664 | |
---|
665 | |
---|
666 | /** |
---|
667 | * this functions handles a reconnect event received from the a NET_MASTER_SERVER or NET_PROXY_SERVER |
---|
668 | */ |
---|
669 | void NetworkStream::handleReconnect(int userId) |
---|
670 | { |
---|
671 | this->bRedirect = false; |
---|
672 | PeerInfo* pInfo = &this->peers[userId]; |
---|
673 | |
---|
674 | PRINTF(0)("===============================================\n"); |
---|
675 | PRINTF(0)("Client is redirected to the other proxy servers\n"); |
---|
676 | PRINTF(0)(" user id: %i\n", userId); |
---|
677 | PRINTF(0)(" connecting to: %s\n", this->networkMonitor->getFirstChoiceProxy()->ip.ipString().c_str()); |
---|
678 | PRINTF(0)("===============================================\n"); |
---|
679 | |
---|
680 | // flush the old synchronization states, since the numbering could be completely different |
---|
681 | pInfo->lastAckedState = 0; |
---|
682 | pInfo->lastRecvedState = 0; |
---|
683 | |
---|
684 | // temp save the ip address here |
---|
685 | IP proxyIP = pInfo->handshake->getProxy1Address(); |
---|
686 | |
---|
687 | // disconnect from the current server and reconnect to proxy server |
---|
688 | this->handleDisconnect( userId); |
---|
689 | this->connectToProxyServer(NET_ID_PROXY_SERVER_01, proxyIP.ipString(), 9999); |
---|
690 | #warning the ports are not yet integrated correctly in the ip class |
---|
691 | |
---|
692 | // and restart the handshake |
---|
693 | this->startHandshake( userId); |
---|
694 | } |
---|
695 | |
---|
696 | |
---|
697 | /** |
---|
698 | * handles the disconnect event |
---|
699 | * @param userId id of the user to remove |
---|
700 | */ |
---|
701 | void NetworkStream::handleDisconnect( int userId ) |
---|
702 | { |
---|
703 | peers[userId].socket->disconnectServer(); |
---|
704 | delete peers[userId].socket; |
---|
705 | peers[userId].socket = NULL; |
---|
706 | |
---|
707 | if ( peers[userId].handshake ) |
---|
708 | delete peers[userId].handshake; |
---|
709 | peers[userId].handshake = NULL; |
---|
710 | |
---|
711 | if ( peers[userId].connectionMonitor ) |
---|
712 | delete peers[userId].connectionMonitor; |
---|
713 | peers[userId].connectionMonitor = NULL; |
---|
714 | |
---|
715 | |
---|
716 | for ( SynchronizeableList::iterator it2 = synchronizeables.begin(); it2 != synchronizeables.end(); it2++ ) { |
---|
717 | (*it2)->cleanUpUser( userId ); |
---|
718 | } |
---|
719 | |
---|
720 | if( SharedNetworkData::getInstance()->isMasterServer()) |
---|
721 | NetworkGameManager::getInstance()->signalLeftPlayer(userId); |
---|
722 | |
---|
723 | this->freeSocketSlots.push_back( userId ); |
---|
724 | |
---|
725 | peers.erase( userId); |
---|
726 | } |
---|
727 | |
---|
728 | |
---|
729 | |
---|
730 | /** |
---|
731 | * handle upstream network traffic |
---|
732 | * @param tick: seconds elapsed since last update |
---|
733 | */ |
---|
734 | void NetworkStream::handleUpstream( int tick ) |
---|
735 | { |
---|
736 | int offset; |
---|
737 | int n; |
---|
738 | |
---|
739 | for ( PeerList::reverse_iterator peer = peers.rbegin(); peer != peers.rend(); peer++ ) |
---|
740 | { |
---|
741 | offset = INTSIZE; // reserve enough space for the packet length |
---|
742 | |
---|
743 | // continue with the next peer if this peer has no socket assigned (therefore no network) |
---|
744 | if ( !peer->second.socket ) |
---|
745 | continue; |
---|
746 | |
---|
747 | // header informations: current state |
---|
748 | n = Converter::intToByteArray( currentState, buf + offset, UDP_PACKET_SIZE - offset ); |
---|
749 | assert( n == INTSIZE ); |
---|
750 | offset += n; |
---|
751 | |
---|
752 | // header informations: last acked state |
---|
753 | n = Converter::intToByteArray( peer->second.lastAckedState, buf + offset, UDP_PACKET_SIZE - offset ); |
---|
754 | assert( n == INTSIZE ); |
---|
755 | offset += n; |
---|
756 | |
---|
757 | // header informations: last recved state |
---|
758 | n = Converter::intToByteArray( peer->second.lastRecvedState, buf + offset, UDP_PACKET_SIZE - offset ); |
---|
759 | assert( n == INTSIZE ); |
---|
760 | offset += n; |
---|
761 | |
---|
762 | // now write all synchronizeables in the packet |
---|
763 | for ( SynchronizeableList::iterator it = synchronizeables.begin(); it != synchronizeables.end(); it++ ) |
---|
764 | { |
---|
765 | |
---|
766 | int oldOffset = offset; |
---|
767 | Synchronizeable & sync = **it; |
---|
768 | |
---|
769 | |
---|
770 | // do not include synchronizeables with uninit id and syncs that don't want to be synchronized |
---|
771 | if ( !sync.beSynchronized() || sync.getUniqueID() <= NET_UID_UNASSIGNED ) |
---|
772 | continue; |
---|
773 | |
---|
774 | // if handshake not finished only sync handshake |
---|
775 | if ( peer->second.handshake && sync.getLeafClassID() != CL_HANDSHAKE ) |
---|
776 | continue; |
---|
777 | |
---|
778 | // if we are a server (both master and proxy servers) and this is not our handshake |
---|
779 | if ( ( SharedNetworkData::getInstance()->isMasterServer() || |
---|
780 | SharedNetworkData::getInstance()->isProxyServerActive() && peer->second.isClient()) |
---|
781 | && sync.getLeafClassID() == CL_HANDSHAKE && sync.getUniqueID() != peer->second.userId ) |
---|
782 | continue; |
---|
783 | |
---|
784 | /* list of synchronizeables that will never be synchronized over the network: */ |
---|
785 | // do not sync null parent |
---|
786 | if ( sync.getLeafClassID() == CL_NULL_PARENT ) |
---|
787 | continue; |
---|
788 | |
---|
789 | |
---|
790 | assert( sync.getLeafClassID() != 0); |
---|
791 | |
---|
792 | assert( offset + INTSIZE <= UDP_PACKET_SIZE ); |
---|
793 | |
---|
794 | // server fakes uniqueid == 0 for handshake |
---|
795 | if ( ( SharedNetworkData::getInstance()->isMasterServer() || |
---|
796 | SharedNetworkData::getInstance()->isProxyServerActive() && peer->second.isClient() ) && |
---|
797 | sync.getUniqueID() <= SharedNetworkData::getInstance()->getMaxPlayer() + 1) // plus one to handle one client more than the max to redirect it |
---|
798 | n = Converter::intToByteArray( 0, buf + offset, UDP_PACKET_SIZE - offset ); |
---|
799 | else |
---|
800 | n = Converter::intToByteArray( sync.getUniqueID(), buf + offset, UDP_PACKET_SIZE - offset ); |
---|
801 | |
---|
802 | |
---|
803 | assert( n == INTSIZE ); |
---|
804 | offset += n; |
---|
805 | |
---|
806 | // make space for packet size |
---|
807 | offset += INTSIZE; |
---|
808 | |
---|
809 | n = sync.getStateDiff( peer->second.userId, buf + offset, UDP_PACKET_SIZE-offset, currentState, peer->second.lastAckedState, -1000 ); |
---|
810 | offset += n; |
---|
811 | |
---|
812 | assert( Converter::intToByteArray( n, buf + offset - n - INTSIZE, INTSIZE ) == INTSIZE ); |
---|
813 | |
---|
814 | // check if all data bytes == 0 -> remove data and the synchronizeable from the sync process since there is no update |
---|
815 | // TODO not all synchronizeables like this maybe add Synchronizeable::canRemoveZeroDiff() |
---|
816 | bool allZero = true; |
---|
817 | for ( int i = 0; i < n; i++ ) |
---|
818 | { |
---|
819 | if ( buf[i+oldOffset+2*INTSIZE] != 0 ) |
---|
820 | allZero = false; |
---|
821 | } |
---|
822 | // if there is no new data in this synchronizeable reset the data offset to the last state -> dont synchronizes |
---|
823 | // data that hast not changed |
---|
824 | if ( allZero ) |
---|
825 | { |
---|
826 | offset = oldOffset; |
---|
827 | } |
---|
828 | } // all synchronizeables written |
---|
829 | |
---|
830 | |
---|
831 | |
---|
832 | for ( SynchronizeableList::iterator it = synchronizeables.begin(); it != synchronizeables.end(); it++ ) |
---|
833 | { |
---|
834 | Synchronizeable & sync = **it; |
---|
835 | |
---|
836 | // again exclude all unwanted syncs |
---|
837 | if ( !sync.beSynchronized() || sync.getUniqueID() <= NET_UID_UNASSIGNED) |
---|
838 | continue; |
---|
839 | |
---|
840 | sync.handleSentState( peer->second.userId, currentState, peer->second.lastAckedState ); |
---|
841 | } |
---|
842 | |
---|
843 | |
---|
844 | assert( Converter::intToByteArray( offset, buf, INTSIZE ) == INTSIZE ); |
---|
845 | |
---|
846 | // now compress the data with the zip library |
---|
847 | int compLength = 0; |
---|
848 | if ( SharedNetworkData::getInstance()->isMasterServer() || |
---|
849 | SharedNetworkData::getInstance()->isProxyServerActive()) |
---|
850 | compLength = Zip::getInstance()->zip( buf, offset, compBuf, UDP_PACKET_SIZE, dictServer ); |
---|
851 | else |
---|
852 | compLength = Zip::getInstance()->zip( buf, offset, compBuf, UDP_PACKET_SIZE, dictClient ); |
---|
853 | |
---|
854 | if ( compLength <= 0 ) |
---|
855 | { |
---|
856 | PRINTF(1)("compression failed!\n"); |
---|
857 | continue; |
---|
858 | } |
---|
859 | |
---|
860 | assert( peer->second.socket->writePacket( compBuf, compLength ) ); |
---|
861 | |
---|
862 | if ( this->remainingBytesToWriteToDict > 0 ) |
---|
863 | writeToNewDict( buf, offset, true ); |
---|
864 | |
---|
865 | peer->second.connectionMonitor->processUnzippedOutgoingPacket( tick, buf, offset, currentState ); |
---|
866 | peer->second.connectionMonitor->processZippedOutgoingPacket( tick, compBuf, compLength, currentState ); |
---|
867 | |
---|
868 | } |
---|
869 | } |
---|
870 | |
---|
871 | /** |
---|
872 | * handle downstream network traffic |
---|
873 | */ |
---|
874 | void NetworkStream::handleDownstream( int tick ) |
---|
875 | { |
---|
876 | int offset = 0; |
---|
877 | |
---|
878 | int length = 0; |
---|
879 | int packetLength = 0; |
---|
880 | int compLength = 0; |
---|
881 | int uniqueId = 0; |
---|
882 | int state = 0; |
---|
883 | int ackedState = 0; |
---|
884 | int fromState = 0; |
---|
885 | int syncDataLength = 0; |
---|
886 | |
---|
887 | for ( PeerList::iterator peer = peers.begin(); peer != peers.end(); peer++ ) |
---|
888 | { |
---|
889 | |
---|
890 | if ( !peer->second.socket ) |
---|
891 | continue; |
---|
892 | |
---|
893 | while ( 0 < (compLength = peer->second.socket->readPacket( compBuf, UDP_PACKET_SIZE )) ) |
---|
894 | { |
---|
895 | peer->second.connectionMonitor->processZippedIncomingPacket( tick, compBuf, compLength ); |
---|
896 | |
---|
897 | packetLength = Zip::getInstance()->unZip( compBuf, compLength, buf, UDP_PACKET_SIZE ); |
---|
898 | |
---|
899 | if ( packetLength < 4*INTSIZE ) |
---|
900 | { |
---|
901 | if ( packetLength != 0 ) |
---|
902 | PRINTF(1)("got too small packet: %d\n", packetLength); |
---|
903 | continue; |
---|
904 | } |
---|
905 | |
---|
906 | if ( this->remainingBytesToWriteToDict > 0 ) |
---|
907 | writeToNewDict( buf, packetLength, false ); |
---|
908 | |
---|
909 | assert( Converter::byteArrayToInt( buf, &length ) == INTSIZE ); |
---|
910 | assert( Converter::byteArrayToInt( buf + INTSIZE, &state ) == INTSIZE ); |
---|
911 | assert( Converter::byteArrayToInt( buf + 2*INTSIZE, &fromState ) == INTSIZE ); |
---|
912 | assert( Converter::byteArrayToInt( buf + 3*INTSIZE, &ackedState ) == INTSIZE ); |
---|
913 | offset = 4*INTSIZE; |
---|
914 | |
---|
915 | peer->second.connectionMonitor->processUnzippedIncomingPacket( tick, buf, packetLength, state, ackedState ); |
---|
916 | |
---|
917 | |
---|
918 | //if this is an old state drop it |
---|
919 | if ( state <= peer->second.lastRecvedState ) |
---|
920 | continue; |
---|
921 | |
---|
922 | if ( packetLength != length ) |
---|
923 | { |
---|
924 | PRINTF(1)("real packet length (%d) and transmitted packet length (%d) do not match!\n", packetLength, length); |
---|
925 | peer->second.socket->disconnectServer(); |
---|
926 | continue; |
---|
927 | } |
---|
928 | |
---|
929 | while ( offset + 2 * INTSIZE < length ) |
---|
930 | { |
---|
931 | assert( offset > 0 ); |
---|
932 | assert( Converter::byteArrayToInt( buf + offset, &uniqueId ) == INTSIZE ); |
---|
933 | offset += INTSIZE; |
---|
934 | |
---|
935 | assert( Converter::byteArrayToInt( buf + offset, &syncDataLength ) == INTSIZE ); |
---|
936 | offset += INTSIZE; |
---|
937 | |
---|
938 | assert( syncDataLength > 0 ); |
---|
939 | assert( syncDataLength < 10000 ); |
---|
940 | |
---|
941 | Synchronizeable * sync = NULL; |
---|
942 | |
---|
943 | // look for the synchronizeable in question |
---|
944 | for ( SynchronizeableList::iterator it = synchronizeables.begin(); it != synchronizeables.end(); it++ ) |
---|
945 | { |
---|
946 | // client thinks his handshake has id 0!!!!! |
---|
947 | if ( (*it)->getUniqueID() == uniqueId || ( uniqueId == 0 && (*it)->getUniqueID() == peer->second.userId ) ) |
---|
948 | { |
---|
949 | sync = *it; |
---|
950 | break; |
---|
951 | } |
---|
952 | } |
---|
953 | |
---|
954 | // this synchronizeable does not yet exist! create it |
---|
955 | if ( sync == NULL ) |
---|
956 | { |
---|
957 | PRINTF(0)("could not find sync with id %d. try to create it\n", uniqueId); |
---|
958 | |
---|
959 | // if it is an old synchronizeable already removed, ignore it |
---|
960 | if ( oldSynchronizeables.find( uniqueId ) != oldSynchronizeables.end() ) |
---|
961 | { |
---|
962 | offset += syncDataLength; |
---|
963 | continue; |
---|
964 | } |
---|
965 | |
---|
966 | // if the node we got this unknown sync from is a client we ignore it (since it has no rights to create a new sync) |
---|
967 | if ( peers[peer->second.userId].isClient() || peers[peer->second.userId].isProxyServerActive()) |
---|
968 | { |
---|
969 | offset += syncDataLength; |
---|
970 | continue; |
---|
971 | } |
---|
972 | |
---|
973 | int leafClassId; |
---|
974 | if ( INTSIZE > length - offset ) |
---|
975 | { |
---|
976 | offset += syncDataLength; |
---|
977 | continue; |
---|
978 | } |
---|
979 | |
---|
980 | Converter::byteArrayToInt( buf + offset, &leafClassId ); |
---|
981 | |
---|
982 | assert( leafClassId != 0 ); |
---|
983 | |
---|
984 | |
---|
985 | BaseObject * b = NULL; |
---|
986 | /* These are some small exeptions in creation: Not all objects can/should be created via Factory */ |
---|
987 | /* Exception 1: NullParent */ |
---|
988 | if( leafClassId == CL_NULL_PARENT || leafClassId == CL_SYNCHRONIZEABLE || leafClassId == CL_NETWORK_GAME_MANAGER ) |
---|
989 | { |
---|
990 | PRINTF(1)("Don't create Object with ID %x, ignored!\n", (int)leafClassId); |
---|
991 | offset += syncDataLength; |
---|
992 | continue; |
---|
993 | } |
---|
994 | else |
---|
995 | b = Factory::fabricate( (ClassID)leafClassId ); |
---|
996 | |
---|
997 | if ( !b ) |
---|
998 | { |
---|
999 | PRINTF(1)("Could not fabricate Object with classID %x\n", leafClassId); |
---|
1000 | offset += syncDataLength; |
---|
1001 | continue; |
---|
1002 | } |
---|
1003 | |
---|
1004 | if ( b->isA(CL_SYNCHRONIZEABLE) ) |
---|
1005 | { |
---|
1006 | sync = dynamic_cast<Synchronizeable*>(b); |
---|
1007 | sync->setUniqueID( uniqueId ); |
---|
1008 | sync->setSynchronized(true); |
---|
1009 | |
---|
1010 | PRINTF(0)("Fabricated %s with id %d\n", sync->getClassCName(), sync->getUniqueID()); |
---|
1011 | } |
---|
1012 | else |
---|
1013 | { |
---|
1014 | PRINTF(1)("Class with ID %x is not a synchronizeable!\n", (int)leafClassId); |
---|
1015 | delete b; |
---|
1016 | offset += syncDataLength; |
---|
1017 | continue; |
---|
1018 | } |
---|
1019 | } |
---|
1020 | |
---|
1021 | |
---|
1022 | int n = sync->setStateDiff( peer->second.userId, buf+offset, syncDataLength, state, fromState ); |
---|
1023 | offset += n; |
---|
1024 | |
---|
1025 | } |
---|
1026 | |
---|
1027 | if ( offset != length ) |
---|
1028 | { |
---|
1029 | PRINTF(0)("offset (%d) != length (%d)\n", offset, length); |
---|
1030 | peer->second.socket->disconnectServer(); |
---|
1031 | } |
---|
1032 | |
---|
1033 | |
---|
1034 | for ( SynchronizeableList::iterator it = synchronizeables.begin(); it != synchronizeables.end(); it++ ) |
---|
1035 | { |
---|
1036 | Synchronizeable & sync = **it; |
---|
1037 | |
---|
1038 | if ( !sync.beSynchronized() || sync.getUniqueID() <= NET_UID_UNASSIGNED ) |
---|
1039 | continue; |
---|
1040 | |
---|
1041 | sync.handleRecvState( peer->second.userId, state, fromState ); |
---|
1042 | } |
---|
1043 | |
---|
1044 | assert( peer->second.lastAckedState <= ackedState ); |
---|
1045 | peer->second.lastAckedState = ackedState; |
---|
1046 | |
---|
1047 | assert( peer->second.lastRecvedState < state ); |
---|
1048 | peer->second.lastRecvedState = state; |
---|
1049 | |
---|
1050 | } |
---|
1051 | |
---|
1052 | } |
---|
1053 | |
---|
1054 | } |
---|
1055 | |
---|
1056 | /** |
---|
1057 | * is executed when a handshake has finished |
---|
1058 | */ |
---|
1059 | void NetworkStream::handleNewClient( int userId ) |
---|
1060 | { |
---|
1061 | // init and assign the message manager |
---|
1062 | MessageManager::getInstance()->initUser( userId ); |
---|
1063 | // do all game relevant stuff here |
---|
1064 | networkGameManager->signalNewPlayer( userId ); |
---|
1065 | } |
---|
1066 | |
---|
1067 | |
---|
1068 | /** |
---|
1069 | * removes old items from oldSynchronizeables |
---|
1070 | */ |
---|
1071 | void NetworkStream::cleanUpOldSyncList( ) |
---|
1072 | { |
---|
1073 | int now = SDL_GetTicks(); |
---|
1074 | |
---|
1075 | for ( std::map<int,int>::iterator it = oldSynchronizeables.begin(); it != oldSynchronizeables.end(); ) |
---|
1076 | { |
---|
1077 | if ( it->second < now - 10*1000 ) |
---|
1078 | { |
---|
1079 | std::map<int,int>::iterator delIt = it; |
---|
1080 | it++; |
---|
1081 | oldSynchronizeables.erase( delIt ); |
---|
1082 | continue; |
---|
1083 | } |
---|
1084 | it++; |
---|
1085 | } |
---|
1086 | } |
---|
1087 | |
---|
1088 | /** |
---|
1089 | * writes data to DATA/dicts/newdict |
---|
1090 | * @param data pointer to data |
---|
1091 | * @param length length |
---|
1092 | */ |
---|
1093 | void NetworkStream::writeToNewDict( byte * data, int length, bool upstream ) |
---|
1094 | { |
---|
1095 | if ( remainingBytesToWriteToDict <= 0 ) |
---|
1096 | return; |
---|
1097 | |
---|
1098 | if ( length > remainingBytesToWriteToDict ) |
---|
1099 | length = remainingBytesToWriteToDict; |
---|
1100 | |
---|
1101 | std::string fileName = ResourceManager::getInstance()->getDataDir(); |
---|
1102 | fileName += "/dicts/newdict"; |
---|
1103 | |
---|
1104 | if ( upstream ) |
---|
1105 | fileName += "_upstream"; |
---|
1106 | else |
---|
1107 | fileName += "_downstream"; |
---|
1108 | |
---|
1109 | FILE * f = fopen( fileName.c_str(), "a" ); |
---|
1110 | |
---|
1111 | if ( !f ) |
---|
1112 | { |
---|
1113 | PRINTF(2)("could not open %s\n", fileName.c_str()); |
---|
1114 | remainingBytesToWriteToDict = 0; |
---|
1115 | return; |
---|
1116 | } |
---|
1117 | |
---|
1118 | if ( fwrite( data, 1, length, f ) != length ) |
---|
1119 | { |
---|
1120 | PRINTF(2)("could not write to file\n"); |
---|
1121 | fclose( f ); |
---|
1122 | return; |
---|
1123 | } |
---|
1124 | |
---|
1125 | fclose( f ); |
---|
1126 | |
---|
1127 | remainingBytesToWriteToDict -= length; |
---|
1128 | } |
---|
1129 | |
---|
1130 | |
---|
1131 | |
---|
1132 | |
---|
1133 | |
---|
1134 | |
---|