[1168] | 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: ClientConnection |
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| 31 | // |
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| 32 | // Description: The Class ClientConnection 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 "ClientConnection.h" |
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| 41 | |
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| 42 | #include <iostream> |
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| 43 | // boost.thread library for multithreading support |
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| 44 | #include <boost/bind.hpp> |
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| 45 | |
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| 46 | #include "util/Sleep.h" |
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| 47 | #include "core/Debug.h" |
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| 48 | |
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| 49 | namespace network |
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| 50 | { |
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[1279] | 51 | //static boost::thread_group network_threads; |
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[1168] | 52 | |
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| 53 | ClientConnection::ClientConnection(int port, std::string address) { |
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| 54 | quit=false; |
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| 55 | server=NULL; |
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| 56 | enet_address_set_host(&serverAddress, address.c_str()); |
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| 57 | serverAddress.port = NETWORK_PORT; |
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| 58 | established=false; |
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| 59 | } |
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| 60 | |
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| 61 | ClientConnection::ClientConnection(int port, const char *address) { |
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| 62 | quit=false; |
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| 63 | server=NULL; |
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| 64 | enet_address_set_host(&serverAddress, address); |
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| 65 | serverAddress.port = NETWORK_PORT; |
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| 66 | established=false; |
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| 67 | } |
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| 68 | |
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| 69 | bool ClientConnection::waitEstablished(int milisec) { |
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| 70 | for(int i=0; i<=milisec && !established; i++) |
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| 71 | usleep(1000); |
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| 72 | |
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| 73 | return established; |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | ENetPacket *ClientConnection::getPacket(ENetAddress &address) { |
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| 78 | if(!buffer.isEmpty()) { |
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| 79 | //std::cout << "###BUFFER IS NOT EMPTY###" << std::endl; |
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| 80 | return buffer.pop(address); |
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| 81 | } |
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| 82 | else{ |
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| 83 | return NULL; |
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| 84 | } |
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| 85 | } |
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| 86 | |
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| 87 | ENetPacket *ClientConnection::getPacket() { |
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| 88 | ENetAddress address; //sems that address is not needed |
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| 89 | return getPacket(address); |
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| 90 | } |
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| 91 | |
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| 92 | bool ClientConnection::queueEmpty() { |
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| 93 | return buffer.isEmpty(); |
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| 94 | } |
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| 95 | |
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| 96 | bool ClientConnection::createConnection() { |
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[1279] | 97 | receiverThread_ = new boost::thread(boost::bind(&ClientConnection::receiverThread, this)); |
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| 98 | //network_threads.create_thread(boost::bind(boost::mem_fn(&ClientConnection::receiverThread), this)); |
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[1168] | 99 | // wait 10 seconds for the connection to be established |
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[1377] | 100 | return waitEstablished(3000); |
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[1168] | 101 | } |
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| 102 | |
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| 103 | bool ClientConnection::closeConnection() { |
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| 104 | quit=true; |
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[1279] | 105 | //network_threads.join_all(); |
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| 106 | receiverThread_->join(); |
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[1168] | 107 | established=false; |
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| 108 | return true; |
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| 109 | } |
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| 110 | |
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| 111 | |
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| 112 | bool ClientConnection::addPacket(ENetPacket *packet) { |
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| 113 | if(server==NULL) |
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| 114 | return false; |
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[1261] | 115 | if(packet==NULL){ |
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| 116 | COUT(3) << "Cl.con: addpacket: invalid packet" << std::endl; |
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[1168] | 117 | return false; |
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[1253] | 118 | } |
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| 119 | if(enet_peer_send(server, 0, packet)<0) |
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| 120 | return false; |
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| 121 | else |
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| 122 | return true; |
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[1168] | 123 | } |
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| 124 | |
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[1377] | 125 | // bool ClientConnection::sendPackets(ENetEvent *event) { |
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| 126 | // if(server==NULL) |
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| 127 | // return false; |
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| 128 | // if(enet_host_service(client, event, NETWORK_SEND_WAIT)>=0){ |
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| 129 | // return true;} |
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| 130 | // else |
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| 131 | // return false; |
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| 132 | // } |
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[1168] | 133 | |
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| 134 | bool ClientConnection::sendPackets() { |
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| 135 | ENetEvent event; |
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| 136 | if(server==NULL) |
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| 137 | return false; |
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[1377] | 138 | enet_host_flush(client); |
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| 139 | return true; |
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[1168] | 140 | } |
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| 141 | |
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| 142 | void ClientConnection::receiverThread() { |
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| 143 | // what about some error-handling here ? |
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| 144 | enet_initialize(); |
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| 145 | atexit(enet_deinitialize); |
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| 146 | ENetEvent event; |
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| 147 | client = enet_host_create(NULL, NETWORK_CLIENT_MAX_CONNECTIONS, 0, 0); |
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[1377] | 148 | if(client==NULL) { |
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| 149 | COUT(2) << "ClientConnection: could not create client host" << std::endl; |
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[1168] | 150 | // add some error handling here ========================== |
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| 151 | quit=true; |
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[1377] | 152 | } |
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[1168] | 153 | //connect to the server |
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| 154 | if(!establishConnection()){ |
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[1377] | 155 | COUT(2) << "clientConn: receiver thread: could not establishConnection" << std::endl; |
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[1168] | 156 | quit=true; |
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| 157 | return; |
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| 158 | } |
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| 159 | //main loop |
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| 160 | while(!quit){ |
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| 161 | //std::cout << "connection loop" << std::endl; |
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| 162 | if(enet_host_service(client, &event, NETWORK_CLIENT_TIMEOUT)<0){ |
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| 163 | // we should never reach this point |
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| 164 | quit=true; |
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| 165 | // add some error handling here ======================== |
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| 166 | } |
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| 167 | switch(event.type){ |
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| 168 | // log handling ================ |
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| 169 | case ENET_EVENT_TYPE_CONNECT: |
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[1377] | 170 | break; |
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[1168] | 171 | case ENET_EVENT_TYPE_RECEIVE: |
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| 172 | COUT(5) << "Cl.Con: receiver-Thread while loop: got new packet" << std::endl; |
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| 173 | if ( !processData(&event) ) COUT(2) << "Current packet was not pushed to packetBuffer -> ev ongoing SegFault" << std::endl; |
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| 174 | COUT(5) << "Cl.Con: processed Data in receiver-thread while loop" << std::endl; |
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| 175 | break; |
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| 176 | case ENET_EVENT_TYPE_DISCONNECT: |
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| 177 | quit=true; |
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| 178 | // server closed the connection |
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| 179 | return; |
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| 180 | break; |
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| 181 | case ENET_EVENT_TYPE_NONE: |
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| 182 | continue; |
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| 183 | } |
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[1279] | 184 | //receiverThread_->yield(); |
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[1168] | 185 | } |
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| 186 | // now disconnect |
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| 187 | |
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| 188 | if(!disconnectConnection()) |
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| 189 | // if disconnecting failed destroy conn. |
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| 190 | enet_peer_reset(server); |
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| 191 | return; |
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| 192 | } |
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| 193 | |
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| 194 | bool ClientConnection::disconnectConnection() { |
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| 195 | ENetEvent event; |
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| 196 | enet_peer_disconnect(server, 0); |
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| 197 | while(enet_host_service(client, &event, NETWORK_CLIENT_TIMEOUT) > 0){ |
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| 198 | switch (event.type) |
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| 199 | { |
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| 200 | case ENET_EVENT_TYPE_NONE: |
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| 201 | case ENET_EVENT_TYPE_CONNECT: |
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| 202 | case ENET_EVENT_TYPE_RECEIVE: |
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| 203 | enet_packet_destroy(event.packet); |
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| 204 | break; |
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| 205 | case ENET_EVENT_TYPE_DISCONNECT: |
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| 206 | return true; |
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| 207 | } |
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| 208 | } |
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| 209 | enet_peer_reset(server); |
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| 210 | return false; |
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| 211 | } |
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| 212 | |
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| 213 | bool ClientConnection::establishConnection() { |
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| 214 | ENetEvent event; |
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| 215 | // connect to peer (server is type ENetPeer*) |
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| 216 | server = enet_host_connect(client, &serverAddress, NETWORK_CLIENT_CHANNELS); |
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[1377] | 217 | if(server==NULL) { |
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| 218 | COUT(2) << "ClientConnection: server == NULL" << std::endl; |
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[1168] | 219 | // error handling |
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| 220 | return false; |
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[1377] | 221 | } |
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[1168] | 222 | // handshake |
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[1377] | 223 | if(enet_host_service(client, &event, NETWORK_CLIENT_TIMEOUT)>=0 && event.type == ENET_EVENT_TYPE_CONNECT){ |
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[1168] | 224 | established=true; |
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| 225 | return true; |
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| 226 | } |
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[1377] | 227 | else { |
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| 228 | COUT(2) << "ClientConnection: enet_host_service < 0 or event.type != ENET_EVENT_TYPE_CONNECT # EVENT:" << event.type << std::endl; |
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[1168] | 229 | return false; |
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[1377] | 230 | } |
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[1168] | 231 | } |
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| 232 | |
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| 233 | bool ClientConnection::processData(ENetEvent *event) { |
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| 234 | COUT(5) << "Cl.Con: got packet, pushing to queue" << std::endl; |
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| 235 | // just add packet to the buffer |
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| 236 | // this can be extended with some preprocessing |
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| 237 | return buffer.push(event); |
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| 238 | } |
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| 239 | |
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| 240 | } |
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