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source: code/branches/gamecontent/src/libraries/network/Server.cc @ 8893

Last change on this file since 8893 was 8858, checked in by landauf, 13 years ago

merged output branch back to trunk.

Changes:

  • you have to include util/Output.h instead of util/Debug.h
  • COUT(x) is now called orxout(level)
  • output levels are now defined by an enum instead of numbers. see util/Output.h for the definition
  • it's possible to use output contexts with orxout(level, context). see util/Output.h for some common contexts. you can define more contexts
  • you must use 'endl' at the end of an output message, '\n' does not flush the message

Output levels:

  • instead of COUT(0) use orxout()
  • instead of COUT(1) use orxout(user_error) or orxout(internal_error)
  • instead of COUT(2) use orxout(user_warning) or orxout(internal_warning)
  • instead of COUT(3) use orxout(user_status/user_info) or orxout(internal_status/internal_info)
  • instead of COUT(4) use orxout(verbose)
  • instead of COUT(5) use orxout(verbose_more)
  • instead of COUT(6) use orxout(verbose_ultra)

Guidelines:

  • user_* levels are for the user, visible in the console and the log-file
  • internal_* levels are for developers, visible in the log-file
  • verbose_* levels are for debugging, only visible if the context of the output is activated

Usage in C++:

  • orxout() << "message" << endl;
  • orxout(level) << "message" << endl;
  • orxout(level, context) << "message" << endl;

Usage in Lua:

  • orxout("message")
  • orxout(orxonox.level.levelname, "message")
  • orxout(orxonox.level.levelname, "context", "message")

Usage in Tcl (and in the in-game-console):

  • orxout levelname message
  • orxout_context levelname context message
  • shortcuts: log message, error message, warning message, status message, info message, debug message
  • Property svn:eol-style set to native
File size: 12.9 KB
Line 
1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Oliver Scheuss
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29//
30// C++ Implementation: Server
31//
32// Description:
33//
34//
35// Author:  Oliver Scheuss, (C) 2007
36//
37// Copyright: See COPYING file that comes with this distribution
38//
39//
40
41#include "Server.h"
42
43#define WIN32_LEAN_AND_MEAN
44#include <enet/enet.h>
45#include <cassert>
46#include <string>
47
48#include "util/Clock.h"
49#include "util/Output.h"
50#include "core/ObjectList.h"
51#include "core/command/Executor.h"
52#include "packet/Chat.h"
53#include "packet/ClassID.h"
54#include "packet/DeleteObjects.h"
55#include "packet/FunctionIDs.h"
56#include "packet/Gamestate.h"
57#include "packet/Welcome.h"
58// #include "ClientInformation.h"
59#include "FunctionCallManager.h"
60#include "GamestateManager.h"
61
62namespace orxonox
63{
64  const unsigned int MAX_FAILURES = 20;
65
66  /**
67  * Constructor for default values (bindaddress is set to ENET_HOST_ANY
68  *
69  */
70  Server::Server()
71  {
72    this->timeSinceLastUpdate_=0;
73  }
74
75  Server::Server(int port)
76  {
77    this->setPort( port );
78    this->timeSinceLastUpdate_=0;
79  }
80
81  /**
82  * Constructor
83  * @param port Port to listen on
84  * @param bindAddress Address to listen on
85  */
86  Server::Server(int port, const std::string& bindAddress)
87  {
88    this->setPort( port );
89    this->setBindAddress( bindAddress );
90    this->timeSinceLastUpdate_=0;
91  }
92
93  /**
94  * @brief Destructor
95  */
96  Server::~Server()
97  {
98  }
99
100  /**
101  * This function opens the server by creating the listener thread
102  */
103  void Server::open()
104  {
105    Host::setActive(true);
106    orxout(verbose, context::network) << "opening server" << endl;
107    this->openListener();
108
109    /* make discoverable on LAN */
110    LANDiscoverable::setActivity(true);
111
112    /* make discoverable on WAN */
113    WANDiscoverable::setActivity(true);
114
115    /* done */
116    return;
117  }
118
119  /**
120  * This function closes the server
121  */
122  void Server::close()
123  {
124    Host::setActive(false);
125    orxout(verbose, context::network) << "closing server" << endl;
126    this->disconnectClients();
127    this->closeListener();
128
129    /* tell master server we're closing */
130    orxout(internal_info, context::network) << "disconnecting." << endl;
131    WANDiscoverable::setActivity(false);
132    orxout(internal_info, context::network) << "disconnecting done" << endl;
133
134    LANDiscoverable::setActivity(false);
135    return;
136  }
137
138  /**
139  * Run this function once every tick
140  * calls processQueue and updateGamestate
141  * @param time time since last tick
142  */
143  void Server::update(const Clock& time)
144  {
145    // receive incoming packets
146    Connection::processQueue();
147
148    // receive and process incoming discovery packets
149    LANDiscoverable::update();
150
151    if ( GamestateManager::hasPeers() )
152    {
153      // process incoming gamestates
154      GamestateManager::processGamestates();
155      FunctionCallManager::processBufferedFunctionCalls();
156
157      // send function calls to clients
158      FunctionCallManager::sendCalls( static_cast<Host*>(this) );
159
160      //this steers our network frequency
161      timeSinceLastUpdate_+=time.getDeltaTime();
162      if(timeSinceLastUpdate_>=NETWORK_PERIOD)
163      {
164        timeSinceLastUpdate_ -= static_cast<unsigned int>( timeSinceLastUpdate_ / NETWORK_PERIOD ) * NETWORK_PERIOD;
165        updateGamestate();
166      }
167//       sendPackets(); // flush the enet queue
168    }
169  }
170
171  void Server::queuePacket(ENetPacket *packet, int clientID, uint8_t channelID)
172  {
173    ServerConnection::addPacket(packet, clientID, channelID);
174  }
175
176  /**
177   * @brief: returns ping time to client in milliseconds
178   */
179  unsigned int Server::getRTT(unsigned int clientID)
180  {
181//     assert(ClientInformation::findClient(clientID));
182//     return ClientInformation::findClient(clientID)->getRTT();
183    // TODO: reimplement
184    return 0;
185  }
186
187  void Server::printRTT()
188  {
189//     for( ClientInformation* temp=ClientInformation::getBegin(); temp!=0; temp=temp->next() )
190//       orxout(message) << "Round trip time to client with ID: " << temp->getID() << " is " << temp->getRTT() << " ms" << endl;
191  }
192
193  /**
194   * @brief: return packet loss ratio to client (scales from 0 to 1)
195   */
196  float Server::getPacketLoss(unsigned int clientID)
197  {
198//     assert(ClientInformation::findClient(clientID));
199//     return ClientInformation::findClient(clientID)->getPacketLoss();
200    return 0.;
201  }
202
203  /**
204  * takes a new snapshot of the gamestate and sends it to the clients
205  */
206  void Server::updateGamestate()
207  {
208    if( this->clientIDs_.size()==0 )
209      //no client connected
210      return;
211    GamestateManager::update();
212//     orxout(verbose_more, context::network) << "Server: one gamestate update complete, goig to sendGameState" << endl;
213    //orxout(verbose_more, context::network) << "updated gamestate, sending it" << endl;
214    //if(clients->getGamestateID()!=GAMESTATEID_INITIAL)
215    sendGameStates();
216    sendObjectDeletes();
217//     orxout(verbose_more, context::network) << "Server: one sendGameState turn complete, repeat in next tick" << endl;
218    //orxout(verbose_more, context::network) << "sent gamestate" << endl;
219  }
220
221  /**
222  * sends the current gamestate to all peers
223  */
224  bool Server::sendGameStates()
225  {
226    std::vector<packet::Gamestate*> gamestates = GamestateManager::getGamestates();
227    std::vector<packet::Gamestate*>::iterator it;
228    for( it = gamestates.begin(); it != gamestates.end(); ++it )
229    {
230      (*it)->send(static_cast<Host*>(this));
231    }
232    return true;
233  }
234
235
236  bool Server::sendObjectDeletes()
237  {
238//     ClientInformation *temp = ClientInformation::getBegin();
239//     if( temp == NULL )
240      //no client connected
241    if( this->clientIDs_.size()==0 )
242      return true;
243    packet::DeleteObjects *del = new packet::DeleteObjects();
244    if(!del->fetchIDs())
245    {
246      delete del;
247      return true;  //everything ok (no deletes this tick)
248    }
249//     orxout(verbose, context::network) << "sending DeleteObjects" << endl;
250//     while(temp != NULL){
251//       if( !(temp->getSynched()) )
252//       {
253//         orxout(verbose_more, context::network) << "Server: not sending gamestate" << endl;
254//         temp=temp->next();
255//         continue;
256//       }
257//       int cid = temp->getID(); //get client id
258//       packet::DeleteObjects *cd = new packet::DeleteObjects(*del);
259//       assert(cd);
260    del->setPeerID(NETWORK_PEER_ID_BROADCAST);
261    if ( !del->send( static_cast<Host*>(this) ) )
262      orxout(internal_warning, context::network) << "Server: could not broadcast deleteObjects packet" << endl;
263//       temp=temp->next();
264      // gs gets automatically deleted by enet callback
265//     }
266//     delete del;
267    return true;
268  }
269
270
271  void Server::addPeer(uint32_t peerID)
272  {
273//     static unsigned int newid=1;
274//
275//     orxout(internal_info, context::network) << "Server: adding client" << endl;
276//     ClientInformation *temp = ClientInformation::insertBack(new ClientInformation);
277//     if(!temp)
278//     {
279//       orxout(internal_warning, context::network) << "Server: could not add client" << endl;
280//     }
281//     temp->setID(newid);
282//     temp->setPeer(event->peer);
283
284    // inform all the listeners
285    this->clientIDs_.push_back(peerID);
286    ClientConnectionListener::broadcastClientConnected(peerID);
287    GamestateManager::addPeer(peerID);
288
289//     ++newid;
290
291    orxout(internal_info, context::network) << "Server: added client id: " << peerID << endl;
292    createClient(peerID);
293}
294
295  void Server::removePeer(uint32_t peerID)
296  {
297    orxout(verbose, context::network) << "removing client from list" << endl;
298//     ClientInformation *client = ClientInformation::findClient(&event->peer->address);
299//     if(!client)
300//       return;
301//     else
302//     {
303  std::vector<uint32_t>::iterator it;
304  for( it=this->clientIDs_.begin(); it!=this->clientIDs_.end(); ++it )
305  {
306    if( *it == peerID )
307    {
308      this->clientIDs_.erase(it);
309      break;
310    }
311  }
312  ClientConnectionListener::broadcastClientDisconnected(peerID);
313  GamestateManager::removePeer(peerID);
314      //ServerConnection::disconnectClient( client );
315      //ClientConnectionListener::broadcastClientDisconnected( client->getID() ); //this is done in ClientInformation now
316//       delete client;
317//     }
318  }
319
320  void Server::processPacket(packet::Packet* packet)
321  {
322    if( packet->isReliable() )
323    {
324      if( this->getLastReceivedGamestateID(packet->getPeerID()) >= packet->getRequiredGamestateID() )
325        packet->process(static_cast<Host*>(this));
326      else
327        this->packetQueue_.push_back(packet);
328    }
329    else
330      packet->process(static_cast<Host*>(this));
331  }
332
333
334  bool Server::createClient(int clientID)
335  {
336//     ClientInformation *temp = ClientInformation::findClient(clientID);
337//     if(!temp)
338//     {
339//       orxout(internal_error, context::network) << "Server. could not create client with id: " << clientID << endl;
340//       return false;
341//     }
342//     orxout(verbose, context::network) << "Con.Man: creating client id: " << temp->getID() << endl;
343
344    // synchronise class ids
345    syncClassid(clientID);
346
347    // now synchronise functionIDs
348    packet::FunctionIDs *fIDs = new packet::FunctionIDs();
349    fIDs->setPeerID(clientID);
350    bool b = fIDs->send( static_cast<Host*>(this) );
351    assert(b);
352
353//     temp->setSynched(true);
354    GamestateManager::setSynched(clientID);
355
356    orxout(verbose, context::network) << "sending welcome" << endl;
357    packet::Welcome *w = new packet::Welcome(clientID);
358    w->setPeerID(clientID);
359    b = w->send( static_cast<Host*>(this) );
360    assert(b);
361//     packet::Gamestate *g = new packet::Gamestate();
362//     g->setPeerID(clientID);
363//     b = g->collectData(0,packet::GAMESTATE_MODE_SERVER);
364//     assert(b);
365//     if(!b)
366//       return false; //no data for the client
367// //     b = g->compressData();
368// //     assert(b);
369//     b = g->send( static_cast<Host*>(this) );
370//     assert(b);
371    return true;
372  }
373
374  void Server::disconnectClient( uint32_t clientID )
375  {
376    ServerConnection::disconnectClient( clientID );
377    GamestateManager::removePeer( clientID );
378    // inform all the listeners
379    // ClientConnectionListener::broadcastClientDisconnected(client->getID()); // this is done in ClientInformation now
380  }
381
382  /**
383   * @brief Sends a chat message to the given target ID.
384   * @param message message to be sent
385   * @param sourceID the ID of the sender
386   * @param targetID the ID of the receiver
387   */
388  void Server::doSendChat(const std::string& message, unsigned int sourceID, unsigned int targetID)
389  {
390    // check if the target exists. just ignore the message otherwise
391    if (!this->isValidTarget(targetID)) // TODO: remove this if an invalid clientIDs don't trigger assertions anymore
392      return;
393
394    // send the message to the target
395    packet::Chat* packet = new packet::Chat(message, sourceID, targetID);
396    packet->setPeerID(targetID);
397    packet->send( static_cast<Host*>(this) );
398
399    // if the target is (or includes) this host as well, call the parent function which passes the message to the listeners
400    if (targetID == NETWORK_PEER_ID_BROADCAST || targetID == Host::getPlayerID())
401      Host::doReceiveChat(message, sourceID, targetID);
402  }
403
404  /**
405   * @brief Gets called if a packet::Chat packet is received. Forwards the packet to the target
406   * and calls the parent function if necessary.
407   */
408  void Server::doReceiveChat(const std::string& message, unsigned int sourceID, unsigned int targetID)
409  {
410      this->doSendChat(message, sourceID, targetID);
411  }
412
413  /**
414   * @brief Returns true if the target ID is in the list of clients (or if it
415   * corresponds to the broadcast or the server ID).
416   */
417  bool Server::isValidTarget(unsigned int targetID)
418  {
419    if (targetID == NETWORK_PEER_ID_BROADCAST || targetID == NETWORK_PEER_ID_SERVER)
420      return true;
421
422    std::vector<uint32_t>::iterator it;
423    for( it=this->clientIDs_.begin(); it!=this->clientIDs_.end(); ++it )
424      if( *it == targetID )
425        return true;
426
427    return false;
428  }
429
430  void Server::syncClassid(unsigned int clientID)
431  {
432    int failures=0;
433    packet::ClassID *classid = new packet::ClassID();
434    classid->setPeerID(clientID);
435    while(!classid->send( static_cast<Host*>(this) ) && failures < 10){
436      failures++;
437    }
438    assert(failures<10);
439    orxout(verbose, context::network) << "syncClassid:\tall synchClassID packets have been sent" << endl;
440  }
441
442}
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