1 | /* |
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2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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3 | * > www.orxonox.net < |
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4 | * |
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5 | * |
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6 | * License notice: |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU General Public License |
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10 | * as published by the Free Software Foundation; either version 2 |
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11 | * of the License, or (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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21 | * |
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22 | * Author: |
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23 | * Oliver Scheuss, (C) 2007 |
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24 | * Co-authors: |
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25 | * ... |
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26 | * |
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27 | */ |
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28 | |
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29 | // |
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30 | // C++ Interface: ConnectionManager |
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31 | // |
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32 | // Description: The Class ConnectionManager manages the servers conenctions to the clients. |
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33 | // each connection is provided by a new process. communication between master process and |
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34 | // connection processes is provided by ... |
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35 | // |
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36 | // |
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37 | // Author: Oliver Scheuss |
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38 | // |
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39 | |
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40 | #include "ConnectionManager.h" |
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41 | |
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42 | #include <iostream> |
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43 | #include <assert.h> |
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44 | // boost.thread library for multithreading support |
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45 | #include <boost/thread/thread.hpp> |
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46 | #include <boost/bind.hpp> |
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47 | |
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48 | #include "core/CoreIncludes.h" |
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49 | #include "core/BaseObject.h" |
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50 | #include "core/Iterator.h" |
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51 | #include "util/Math.h" |
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52 | #include "util/Sleep.h" |
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53 | #include "ClientInformation.h" |
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54 | #include "synchronisable/Synchronisable.h" |
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55 | #include "packet/ClassID.h" |
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56 | |
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57 | namespace std |
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58 | { |
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59 | bool operator< (ENetAddress a, ENetAddress b) { |
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60 | if(a.host <= b.host) |
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61 | return true; |
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62 | else |
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63 | return false; |
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64 | } |
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65 | } |
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66 | |
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67 | namespace orxonox |
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68 | { |
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69 | //boost::thread_group network_threads; |
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70 | |
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71 | ConnectionManager *ConnectionManager::instance_=0; |
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72 | |
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73 | ConnectionManager::ConnectionManager():receiverThread_(0){ |
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74 | assert(instance_==0); |
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75 | instance_=this; |
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76 | quit=false; |
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77 | bindAddress.host = ENET_HOST_ANY; |
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78 | bindAddress.port = NETWORK_PORT; |
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79 | } |
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80 | boost::recursive_mutex ConnectionManager::enet_mutex; |
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81 | |
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82 | ConnectionManager::ConnectionManager(int port){ |
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83 | assert(instance_==0); |
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84 | instance_=this; |
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85 | quit=false; |
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86 | bindAddress.host = ENET_HOST_ANY; |
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87 | bindAddress.port = port; |
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88 | } |
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89 | |
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90 | ConnectionManager::ConnectionManager(int port, const std::string& address) :receiverThread_(0) { |
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91 | assert(instance_==0); |
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92 | instance_=this; |
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93 | quit=false; |
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94 | enet_address_set_host (& bindAddress, address.c_str()); |
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95 | bindAddress.port = NETWORK_PORT; |
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96 | } |
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97 | |
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98 | ConnectionManager::ConnectionManager(int port, const char *address) : receiverThread_(0) { |
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99 | assert(instance_==0); |
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100 | instance_=this; |
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101 | quit=false; |
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102 | enet_address_set_host (& bindAddress, address); |
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103 | bindAddress.port = NETWORK_PORT; |
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104 | } |
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105 | |
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106 | ConnectionManager::~ConnectionManager(){ |
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107 | if(!quit) |
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108 | quitListener(); |
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109 | instance_=0; |
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110 | } |
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111 | |
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112 | |
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113 | ENetEvent *ConnectionManager::getEvent(){ |
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114 | if(!buffer.isEmpty()) |
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115 | return buffer.pop(); |
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116 | else |
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117 | return NULL; |
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118 | } |
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119 | |
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120 | bool ConnectionManager::queueEmpty() { |
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121 | return buffer.isEmpty(); |
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122 | } |
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123 | |
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124 | void ConnectionManager::createListener() { |
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125 | receiverThread_ = new boost::thread(boost::bind(&ConnectionManager::receiverThread, this)); |
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126 | //network_threads.create_thread(boost::bind(boost::mem_fn(&ConnectionManager::receiverThread), this)); |
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127 | //boost::thread thr(boost::bind(boost::mem_fn(&ConnectionManager::receiverThread), this)); |
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128 | return; |
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129 | } |
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130 | |
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131 | bool ConnectionManager::quitListener() { |
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132 | quit=true; |
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133 | //network_threads.join_all(); |
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134 | receiverThread_->join(); |
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135 | return true; |
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136 | } |
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137 | |
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138 | |
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139 | bool ConnectionManager::addPacket(ENetPacket *packet, ENetPeer *peer) { |
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140 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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141 | if(enet_peer_send(peer, NETWORK_DEFAULT_CHANNEL, packet)!=0) |
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142 | return false; |
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143 | return true; |
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144 | } |
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145 | |
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146 | bool ConnectionManager::addPacket(ENetPacket *packet, int clientID) { |
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147 | ClientInformation *temp = ClientInformation::findClient(clientID); |
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148 | if(!temp){ |
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149 | COUT(3) << "C.Man: addPacket findClient failed" << std::endl; |
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150 | return false; |
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151 | } |
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152 | return addPacket(packet, temp->getPeer()); |
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153 | } |
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154 | |
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155 | bool ConnectionManager::addPacketAll(ENetPacket *packet) { |
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156 | if(!instance_) |
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157 | return false; |
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158 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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159 | for(ClientInformation *i=ClientInformation::getBegin()->next(); i!=0; i=i->next()){ |
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160 | COUT(3) << "adding broadcast packet for client: " << i->getID() << std::endl; |
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161 | if(enet_peer_send(i->getPeer(), 0, packet)!=0) |
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162 | return false; |
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163 | } |
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164 | return true; |
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165 | } |
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166 | |
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167 | // we actually dont need that function, because host_service does that for us |
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168 | bool ConnectionManager::sendPackets() { |
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169 | if(server==NULL || !instance_) |
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170 | return false; |
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171 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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172 | enet_host_flush(server); |
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173 | lock.unlock(); |
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174 | return true; |
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175 | } |
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176 | |
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177 | void ConnectionManager::receiverThread() { |
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178 | // what about some error-handling here ? |
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179 | ENetEvent *event; |
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180 | atexit(enet_deinitialize); |
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181 | { //scope of the mutex |
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182 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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183 | enet_initialize(); |
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184 | server = enet_host_create(&bindAddress, NETWORK_MAX_CONNECTIONS, 0, 0); |
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185 | lock.unlock(); |
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186 | } |
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187 | if(server==NULL){ |
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188 | // add some error handling here ========================== |
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189 | quit=true; |
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190 | return; |
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191 | } |
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192 | |
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193 | event = new ENetEvent; |
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194 | while(!quit){ |
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195 | { //mutex scope |
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196 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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197 | if(enet_host_service(server, event, NETWORK_WAIT_TIMEOUT)<0){ |
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198 | // we should never reach this point |
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199 | quit=true; |
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200 | continue; |
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201 | // add some error handling here ======================== |
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202 | } |
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203 | lock.unlock(); |
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204 | } |
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205 | switch(event->type){ |
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206 | // log handling ================ |
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207 | case ENET_EVENT_TYPE_CONNECT: |
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208 | //COUT(3) << "adding event_type_connect to queue" << std::endl; |
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209 | case ENET_EVENT_TYPE_DISCONNECT: |
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210 | //addClient(event); |
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211 | //this is a workaround to ensure thread safety |
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212 | //COUT(5) << "Con.Man: connection event has occured" << std::endl; |
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213 | //break; |
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214 | case ENET_EVENT_TYPE_RECEIVE: |
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215 | //std::cout << "received data" << std::endl; |
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216 | //COUT(5) << "Con.Man: receive event has occured" << std::endl; |
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217 | // only add, if client has connected yet and not been disconnected |
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218 | //if(head_->findClient(&event->peer->address)) |
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219 | processData(event); |
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220 | event = new ENetEvent; |
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221 | // else |
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222 | // COUT(3) << "received a packet from a client we don't know" << std::endl; |
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223 | break; |
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224 | //case ENET_EVENT_TYPE_DISCONNECT: |
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225 | //clientDisconnect(event->peer); |
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226 | //break; |
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227 | case ENET_EVENT_TYPE_NONE: |
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228 | //receiverThread_->yield(); |
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229 | msleep(1); |
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230 | break; |
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231 | } |
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232 | // usleep(100); |
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233 | //receiverThread_->yield(); //TODO: find apropriate |
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234 | } |
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235 | disconnectClients(); |
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236 | // if we're finishied, destroy server |
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237 | { |
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238 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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239 | enet_host_destroy(server); |
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240 | lock.unlock(); |
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241 | } |
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242 | } |
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243 | |
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244 | //### added some bugfixes here, but we cannot test them because |
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245 | //### the server crashes everytime because of some gamestates |
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246 | //### (trying to resolve that now) |
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247 | void ConnectionManager::disconnectClients() { |
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248 | ENetEvent event; |
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249 | ClientInformation *temp = ClientInformation::getBegin()->next(); |
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250 | while(temp!=0){ |
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251 | { |
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252 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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253 | enet_peer_disconnect(temp->getPeer(), 0); |
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254 | lock.unlock(); |
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255 | } |
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256 | temp = temp->next(); |
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257 | } |
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258 | //bugfix: might be the reason why server crashes when clients disconnects |
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259 | temp = ClientInformation::getBegin()->next(); |
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260 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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261 | while( temp!=0 && enet_host_service(server, &event, NETWORK_WAIT_TIMEOUT) >= 0){ |
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262 | switch (event.type) |
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263 | { |
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264 | case ENET_EVENT_TYPE_NONE: break; |
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265 | case ENET_EVENT_TYPE_CONNECT: break; |
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266 | case ENET_EVENT_TYPE_RECEIVE: |
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267 | enet_packet_destroy(event.packet); |
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268 | break; |
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269 | case ENET_EVENT_TYPE_DISCONNECT: |
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270 | COUT(4) << "disconnecting all clients" << std::endl; |
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271 | if(ClientInformation::findClient(&(event.peer->address))) |
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272 | delete ClientInformation::findClient(&(event.peer->address)); |
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273 | //maybe needs bugfix: might also be a reason for the server to crash |
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274 | temp = temp->next(); |
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275 | break; |
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276 | } |
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277 | } |
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278 | return; |
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279 | } |
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280 | |
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281 | bool ConnectionManager::processData(ENetEvent *event) { |
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282 | // just add packet to the buffer |
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283 | // this can be extended with some preprocessing |
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284 | return buffer.push(event); |
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285 | } |
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286 | |
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287 | |
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288 | |
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289 | int ConnectionManager::getClientID(ENetPeer peer) { |
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290 | return getClientID(peer.address); |
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291 | } |
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292 | |
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293 | int ConnectionManager::getClientID(ENetAddress address) { |
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294 | return ClientInformation::findClient(&address)->getID(); |
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295 | } |
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296 | |
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297 | ENetPeer *ConnectionManager::getClientPeer(int clientID) { |
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298 | return ClientInformation::findClient(clientID)->getPeer(); |
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299 | } |
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300 | |
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301 | /** |
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302 | * |
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303 | * @param clientID |
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304 | */ |
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305 | void ConnectionManager::syncClassid(unsigned int clientID) { |
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306 | unsigned int network_id=0, failures=0; |
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307 | std::string classname; |
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308 | Identifier *id; |
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309 | std::map<std::string, Identifier*>::const_iterator it = Factory::getFactoryMapBegin(); |
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310 | while(it != Factory::getFactoryMapEnd()){ |
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311 | id = (*it).second; |
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312 | if(id == NULL) |
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313 | continue; |
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314 | classname = id->getName(); |
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315 | network_id = id->getNetworkID(); |
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316 | if(network_id==0) |
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317 | COUT(3) << "we got a null class id: " << id->getName() << std::endl; |
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318 | COUT(4) << "Con.Man:syncClassid:\tnetwork_id: " << network_id << ", classname: " << classname << std::endl; |
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319 | |
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320 | packet::ClassID *classid = new packet::ClassID( network_id, classname ); |
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321 | classid->setClientID(clientID); |
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322 | while(!classid->send() && failures < 10){ |
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323 | failures++; |
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324 | } |
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325 | ++it; |
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326 | } |
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327 | //sendPackets(); |
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328 | COUT(4) << "syncClassid:\tall synchClassID packets have been sent" << std::endl; |
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329 | } |
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330 | |
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331 | |
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332 | void ConnectionManager::disconnectClient(ClientInformation *client){ |
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333 | { |
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334 | boost::recursive_mutex::scoped_lock lock(ConnectionManager::enet_mutex); |
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335 | enet_peer_disconnect(client->getPeer(), 0); |
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336 | lock.unlock(); |
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337 | } |
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338 | } |
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339 | |
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340 | |
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341 | } |
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