src/ServerConnect.cpp

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2008 aMule Team ( admin@amule.org / http://www.amule.org )
   5 // Copyright (c) 2002 Merkur ( devs@emule-project.net / http://www.emule-project.net )
   6 //
   7 // Any parts of this program derived from the xMule, lMule or eMule project,
   8 // or contributed by third-party developers are copyrighted by their
   9 // respective authors.
  10 //
  11 // This program is free software; you can redistribute it and/or modify
  12 // it under the terms of the GNU General Public License as published by
  13 // the Free Software Foundation; either version 2 of the License, or
  14 // (at your option) any later version.
  15 //
  16 // This program is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License
  22 // along with this program; if not, write to the Free Software
  23 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  24 //
  25
  26 #include "ServerConnect.h"      // Interface declarations.
  27
  28 #include <protocol/Protocols.h>
  29 #include <protocol/ed2k/ClientSoftware.h> // Sometimes we reply with TCP packets.
  30 #include <tags/ClientTags.h>
  31 #include <common/ClientVersion.h>
  32 #include <common/EventIDs.h>
  33
  34 #include "SearchList.h"         // Needed for CSearchList
  35 #include "ServerUDPSocket.h"    // Needed for CServerUDPSocket
  36 #include "SharedFileList.h"     // Needed for CSharedFileList
  37 #include "Packet.h"             // Needed for CTag
  38 #include "MemFile.h"            // Needed for CMemFile
  39 #include "ServerSocket.h"       // Needed for CServerSocket
  40 #include "ListenSocket.h"       // Needed for CListenSocket
  41 #include "Server.h"             // Needed for CServer
  42 #include "amule.h"              // Needed for theApp
  43 #include "ServerList.h"         // Needed for CServerList
  44 #include "Preferences.h"        // Needed for CPreferences
  45 #include "Statistics.h"         // Needed for theStats
  46 #include "Logger.h"
  47 #include "GuiEvents.h"          // Needed for Notify_*
  48 #include <common/Format.h>
  49
  50
  51 //#define DEBUG_CLIENT_PROTOCOL
  52
  53
  54 void CServerConnect::TryAnotherConnectionrequest()
  55 {
  56         if ( connectionattemps.size() < (unsigned)(( thePrefs::IsSafeServerConnectEnabled()) ? 1 : 2) ) {
  57
  58                 CServer*  next_server = used_list->GetNextServer(m_bTryObfuscated);
  59
  60                 if ( thePrefs::AutoConnectStaticOnly() ) {
  61                         while (next_server && !next_server->IsStaticMember()) {
  62                                 next_server = used_list->GetNextServer(m_bTryObfuscated);
  63                         }
  64                 }
  65
  66                 if (!next_server) {
  67                         if ( connectionattemps.empty() ) {
  68                                 if (m_bTryObfuscated && !thePrefs::IsClientCryptLayerRequired()){
  69                                         AddLogLineM(true, _("Failed to connect to all obfuscated servers listed. Making another pass without obfuscation."));
  70                                         // try all servers on the non-obfuscated port next
  71                                         m_bTryObfuscated = false;
  72                                         ConnectToAnyServer( false, true);
  73                                 } else {
  74                                         AddLogLineM(true, _("Failed to connect to all servers listed. Making another pass."));
  75                                         ConnectToAnyServer( false );
  76                                 }
  77                         }
  78                         return;
  79                 }
  80
  81                 ConnectToServer(next_server, true, !m_bTryObfuscated);
  82         }
  83 }
  84
  85 void CServerConnect::ConnectToAnyServer(bool prioSort, bool bNoCrypt)
  86 {
  87         if (!thePrefs::GetNetworkED2K()){
  88                 AddLogLineM(true,_("ED2K network disabled on preferences, not connecting."));
  89                 return;
  90         }
  91
  92         StopConnectionTry();
  93         Disconnect();
  94         connecting = true;
  95         singleconnecting = false;
  96         m_bTryObfuscated = thePrefs::IsServerCryptLayerTCPRequested() && !bNoCrypt;
  97
  98         // Barry - Only auto-connect to static server option
  99         if (thePrefs::AutoConnectStaticOnly()) {
 100                 bool anystatic = false;
 101                 CServer *next_server;
 102                 used_list->ResetServerPos();
 103                 while ((next_server = used_list->GetNextServer(false)) != NULL) {
 104                         if (next_server->IsStaticMember()) {
 105                                 anystatic = true;
 106                                 break;
 107                         }
 108                 }
 109                 if (!anystatic) {
 110                         connecting = false;
 111                         AddLogLineM(true,_("No valid servers to connect in serverlist found"));
 112                         return;
 113                 }
 114         }
 115
 116         if ( thePrefs::Score() && prioSort ) {
 117                 used_list->Sort();
 118         }
 119
 120         used_list->ResetServerPos();
 121
 122         if (used_list->GetServerCount()==0 ) {
 123                 connecting = false;
 124                 AddLogLineM(true,_("No valid servers to connect in serverlist found"));
 125                 return;
 126         }
 127
 128         theApp->listensocket->Process();
 129
 130         TryAnotherConnectionrequest();
 131 }
 132
 133
 134 void CServerConnect::ConnectToServer(CServer* server, bool multiconnect, bool bNoCrypt)
 135 {
 136         if (!thePrefs::GetNetworkED2K()){
 137                 AddLogLineM(true,_("ED2K network disabled on preferences, not connecting."));
 138                 return;
 139         }
 140
 141         if (!multiconnect) {
 142                 StopConnectionTry();
 143                 Disconnect();
 144         }
 145         connecting = true;
 146         singleconnecting = !multiconnect;
 147
 148         CServerSocket* newsocket = new CServerSocket(this, thePrefs::GetProxyData());
 149         m_lstOpenSockets.push_back(newsocket);
 150         newsocket->ConnectToServer(server, bNoCrypt);
 151
 152         connectionattemps[GetTickCount()] = newsocket;
 153 }
 154
 155
 156 void CServerConnect::StopConnectionTry()
 157 {
 158         connectionattemps.clear();
 159         connecting = false;
 160         singleconnecting = false;
 161
 162         if (m_idRetryTimer.IsRunning())
 163         {
 164           m_idRetryTimer.Stop();
 165         }
 166
 167         // close all currenty opened sockets except the one which is connected to our current server
 168         for(SocketsList::iterator it = m_lstOpenSockets.begin(); it != m_lstOpenSockets.end(); ) {
 169                 CServerSocket *pSck = *it++;
 170                 if (pSck == connectedsocket)            // don't destroy socket which is connected to server
 171                         continue;
 172                 if (pSck->m_bIsDeleting == false)       // don't destroy socket if it is going to destroy itself later on
 173                         DestroySocket(pSck);
 174         }
 175 }
 176
 177 #define CAPABLE_ZLIB                            0x01
 178 #define CAPABLE_IP_IN_LOGIN_FRAME       0x02
 179 #define CAPABLE_AUXPORT                         0x04
 180 #define CAPABLE_NEWTAGS                         0x08
 181 #define CAPABLE_UNICODE                         0x10
 182 #define CAPABLE_LARGEFILES                      0x100
 183 #define SRVCAP_SUPPORTCRYPT     0x0200
 184 #define SRVCAP_REQUESTCRYPT     0x0400
 185 #define SRVCAP_REQUIRECRYPT     0x0800
 186
 187 void CServerConnect::ConnectionEstablished(CServerSocket* sender)
 188 {
 189         if (connecting == false)
 190         {
 191                 // we are already connected to another server
 192                 DestroySocket(sender);
 193                 return;
 194         }
 195
 196         if (sender->GetConnectionState() == CS_WAITFORLOGIN) {
 197                 AddLogLineM(false, CFormat( _("Connected to %s (%s:%i)") )
 198                         % sender->cur_server->GetListName()
 199                         % sender->cur_server->GetFullIP()
 200                         % sender->cur_server->GetPort() );
 201
 202                 //send loginpacket
 203                 CServer* update = theApp->serverlist->GetServerByAddress( sender->cur_server->GetAddress(), sender->cur_server->GetPort() );
 204                 if (update){
 205                         update->ResetFailedCount();
 206                         Notify_ServerRefresh( update );
 207                 }
 208
 209                 CMemFile data(256);
 210                 data.WriteHash(thePrefs::GetUserHash());
 211                 // Why pass an ID, if we are loggin in?
 212                 data.WriteUInt32(GetClientID());
 213                 data.WriteUInt16(thePrefs::GetPort());
 214                 data.WriteUInt32(4); // tagcount
 215
 216                 // Kry - Server doesn't support VBT tags afaik.
 217                 // Not to mention we don't know its flags yet
 218
 219                 CTagString tagname(CT_NAME,thePrefs::GetUserNick());
 220                 tagname.WriteTagToFile(&data);
 221
 222                 CTagInt32 tagversion(CT_VERSION,EDONKEYVERSION);
 223                 tagversion.WriteTagToFile(&data);
 224
 225                 uint32 dwCryptFlags = 0;
 226
 227                 if (thePrefs::IsClientCryptLayerSupported()) {
 228                         dwCryptFlags |= SRVCAP_SUPPORTCRYPT;
 229                 }
 230
 231                 if (thePrefs::IsClientCryptLayerRequested()) {
 232                         dwCryptFlags |= SRVCAP_REQUESTCRYPT;
 233                 }
 234
 235                 if (thePrefs::IsClientCryptLayerRequired()) {
 236                         dwCryptFlags |= SRVCAP_REQUIRECRYPT;
 237                 }
 238
 239                 // FLAGS for server connection
 240                 CTagInt32 tagflags(CT_SERVER_FLAGS, CAPABLE_ZLIB
 241                                                                 | CAPABLE_AUXPORT
 242                                                                 | CAPABLE_NEWTAGS
 243                                                                 | CAPABLE_UNICODE
 244                                                                 | CAPABLE_LARGEFILES
 245                                                                 | dwCryptFlags
 246                                                                                         );
 247
 248                 tagflags.WriteTagToFile(&data);
 249
 250                 // eMule Version (14-Mar-2004: requested by lugdunummaster (need for LowID clients which have no chance
 251                 // to send an Hello packet to the server during the callback test))
 252                 CTagInt32 tagMuleVersion(CT_EMULE_VERSION,
 253                         (SO_AMULE       << 24) |
 254                         make_full_ed2k_version(VERSION_MJR, VERSION_MIN, VERSION_UPDATE)
 255                          );
 256                 tagMuleVersion.WriteTagToFile(&data);
 257
 258                 CPacket* packet = new CPacket(data, OP_EDONKEYPROT, OP_LOGINREQUEST);
 259                 #ifdef DEBUG_CLIENT_PROTOCOL
 260                 AddLogLineM(true,wxT("Client: OP_LOGINREQUEST"));
 261                 AddLogLineM(true,wxString(wxT("        Hash     : ")) << thePrefs::GetUserHash().Encode());
 262                 AddLogLineM(true,wxString(wxT("        ClientID : ")) << GetClientID());
 263                 AddLogLineM(true,wxString(wxT("        Port     : ")) << thePrefs::GetPort());
 264                 AddLogLineM(true,wxString(wxT("        User Nick: ")) << thePrefs::GetUserNick());
 265                 AddLogLineM(true,wxString(wxT("        Edonkey  : ")) << EDONKEYVERSION);
 266                 #endif
 267                 theStats::AddUpOverheadServer(packet->GetPacketSize());
 268                 SendPacket(packet, true, sender);
 269         } else if (sender->GetConnectionState() == CS_CONNECTED){
 270                 theStats::AddReconnect();
 271                 theStats::GetServerConnectTimer()->ResetTimer();
 272                 connected = true;
 273                 AddLogLineM(true, CFormat( _("Connection established on: %s") ) % sender->cur_server->GetListName());
 274                 connectedsocket = sender;
 275
 276                 StopConnectionTry();
 277
 278                 CServer* update = theApp->serverlist->GetServerByAddress(connectedsocket->cur_server->GetAddress(),sender->cur_server->GetPort());
 279                 if ( update ) {
 280                         Notify_ServerHighlight(update, true);
 281                 }
 282
 283                 theApp->sharedfiles->ClearED2KPublishInfo();
 284
 285                 Notify_ServerRemoveDead();
 286
 287                 // tecxx 1609 2002 - serverlist update
 288                 if (thePrefs::AddServersFromServer()) {
 289                         CPacket* packet = new CPacket(OP_GETSERVERLIST, 0, OP_EDONKEYPROT);
 290                         theStats::AddUpOverheadServer(packet->GetPacketSize());
 291                         SendPacket(packet, true);
 292                         #ifdef DEBUG_CLIENT_PROTOCOL
 293                         AddLogLineM(true,wxT("Client: OP_GETSERVERLIST"));
 294                         #endif
 295                 }
 296         }
 297
 298         theApp->ShowConnectionState();
 299 }
 300
 301
 302 bool CServerConnect::SendPacket(CPacket* packet,bool delpacket, CServerSocket* to)
 303 {
 304         if (!to) {
 305                 if (connected) {
 306                         connectedsocket->SendPacket(packet, delpacket, true);
 307                         return true;
 308                 } else {
 309                         if ( delpacket ) {
 310                                 delete packet;
 311                         }
 312
 313                         return false;
 314                 }
 315         } else {
 316                 to->SendPacket(packet, delpacket, true);
 317                 return true;
 318         }
 319 }
 320
 321
 322 bool CServerConnect::SendUDPPacket(CPacket* packet, CServer* host, bool delpacket, bool rawpacket, uint16 port_offset)
 323 {
 324         if (connected) {
 325                 serverudpsocket->SendPacket(packet, host, delpacket, rawpacket, port_offset);
 326         } else if (delpacket) {
 327                 delete packet;
 328         }
 329
 330         return true;
 331 }
 332
 333
 334 void CServerConnect::ConnectionFailed(CServerSocket* sender)
 335 {
 336         if (connecting == false && sender != connectedsocket)
 337         {
 338                 // just return, cleanup is done by the socket itself
 339                 return;
 340         }
 341         //messages
 342         CServer* pServer = theApp->serverlist->GetServerByAddress(sender->cur_server->GetAddress(), sender->cur_server->GetPort());
 343         switch (sender->GetConnectionState()){
 344                 case CS_FATALERROR:
 345                         AddLogLineM(true, _("Fatal Error while trying to connect. Internet connection might be down"));
 346                         break;
 347                 case CS_DISCONNECTED:
 348                         theApp->sharedfiles->ClearED2KPublishInfo();
 349                         AddLogLineM(false,CFormat( _("Lost connection to %s (%s:%i)") )
 350                                 % sender->cur_server->GetListName()
 351                                 % sender->cur_server->GetFullIP()
 352                                 % sender->cur_server->GetPort() );
 353
 354                         if (pServer){
 355                                 Notify_ServerHighlight(pServer, false);
 356                         }
 357                         break;
 358                 case CS_SERVERDEAD:
 359                         AddLogLineM(false, CFormat( _("%s (%s:%i) appears to be dead.") )
 360                                 % sender->cur_server->GetListName()
 361                                 % sender->cur_server->GetFullIP()
 362                                 % sender->cur_server->GetPort() );
 363
 364                         if (pServer) {
 365                                 pServer->AddFailedCount();
 366                                 Notify_ServerRefresh( pServer );
 367                         }
 368                         break;
 369                 case CS_ERROR:
 370                         break;
 371                 case CS_SERVERFULL:
 372                         AddLogLineM(false, CFormat( _("%s (%s:%i) appears to be full.") )
 373                                 % sender->cur_server->GetListName()
 374                                 % sender->cur_server->GetFullIP()
 375                                 % sender->cur_server->GetPort() );
 376
 377                         break;
 378                 case CS_NOTCONNECTED:;
 379                         break;
 380         }
 381
 382         // IMPORTANT: mark this socket not to be deleted in StopConnectionTry(),
 383         // because it will delete itself after this function!
 384         sender->m_bIsDeleting = true;
 385
 386         switch (sender->GetConnectionState()) {
 387                 case CS_FATALERROR:{
 388                         bool autoretry= !singleconnecting;
 389                         StopConnectionTry();
 390                         if ((thePrefs::Reconnect()) && (autoretry) && (!m_idRetryTimer.IsRunning())){
 391                                 AddLogLineM(false, wxString::Format(wxPLURAL("Automatic connection to server will retry in %d second", "Automatic connection to server will retry in %d seconds", CS_RETRYCONNECTTIME), CS_RETRYCONNECTTIME));
 392                                 m_idRetryTimer.Start(1000*CS_RETRYCONNECTTIME);
 393                         }
 394                         break;
 395                 }
 396                 case CS_DISCONNECTED:{
 397                         theApp->sharedfiles->ClearED2KPublishInfo();
 398                         connected = false;
 399                         Notify_ServerHighlight(sender->cur_server,false);
 400                         if (connectedsocket)  {
 401                                 connectedsocket->Close();
 402                         }
 403                         connectedsocket = NULL;
 404                         theApp->searchlist->StopGlobalSearch();
 405                         Notify_SearchCancel();
 406                         theStats::GetServerConnectTimer()->StopTimer();
 407                         if (thePrefs::Reconnect() && !connecting){
 408                                 ConnectToAnyServer();
 409                         }
 410
 411                         AddLogLineM( true, _("Connection lost") );
 412                         break;
 413                 }
 414                 case CS_ERROR:
 415                 case CS_NOTCONNECTED:{
 416                         if (!connecting)
 417                                 break;
 418                         AddLogLineM(false, CFormat( _("Connecting to %s (%s:%i) failed.") )
 419                                 % sender->info
 420                                 % sender->cur_server->GetFullIP()
 421                                 % sender->cur_server->GetPort() );
 422                 }
 423                 case CS_SERVERDEAD:
 424                 case CS_SERVERFULL:{
 425                         if (!connecting) {
 426                                 break;
 427                         }
 428                         if (singleconnecting) {
 429                                 if (pServer && sender->IsServerCryptEnabledConnection() && !thePrefs::IsClientCryptLayerRequired()){
 430                                         // try reconnecting without obfuscation
 431                                         ConnectToServer(pServer, false, true);
 432                                         break;
 433                                 }
 434
 435                                 StopConnectionTry();
 436                                 break;
 437                         }
 438
 439                         ServerSocketMap::iterator it = connectionattemps.begin();
 440                         while ( it != connectionattemps.end() ){
 441                                 if ( it->second == sender ) {
 442                                         connectionattemps.erase( it );
 443                                         break;
 444                                 }
 445                                 ++it;
 446                         }
 447                         TryAnotherConnectionrequest();
 448                 }
 449         }
 450         theApp->ShowConnectionState();
 451 }
 452
 453 void CServerConnect::CheckForTimeout()
 454 {
 455         uint32 dwCurTick = GetTickCount();
 456
 457         ServerSocketMap::iterator it = connectionattemps.begin();
 458         while ( it != connectionattemps.end() ){
 459                 if ( !it->second ) {
 460                         AddLogLineM(false, _("Error: Socket invalid at timeoutcheck"));
 461                         connectionattemps.erase( it );
 462                         return;
 463                 }
 464
 465                 if ( dwCurTick - it->first > CONSERVTIMEOUT) {
 466                         uint32 key = it->first;
 467                         CServerSocket* value = it->second;
 468                         ++it;
 469                         if (!value->IsSolving()) {
 470                                 AddLogLineM(false, CFormat( _("Connection attempt to %s (%s:%i) timed out.") )
 471                                         % value->info
 472                                         % value->cur_server->GetFullIP()
 473                                         % value->cur_server->GetPort() );
 474
 475                                 connectionattemps.erase( key );
 476
 477                                 TryAnotherConnectionrequest();
 478                                 DestroySocket( value );
 479                         }
 480                 } else {
 481                         ++it;
 482                 }
 483         }
 484 }
 485
 486
 487 bool CServerConnect::Disconnect()
 488 {
 489         if (connected && connectedsocket) {
 490                 theApp->sharedfiles->ClearED2KPublishInfo();
 491
 492                 connected = false;
 493
 494                 CServer* update = theApp->serverlist->GetServerByAddress(
 495                         connectedsocket->cur_server->GetAddress(),
 496                         connectedsocket->cur_server->GetPort());
 497                 Notify_ServerHighlight(update, false);
 498                 theApp->SetPublicIP(0);
 499                 DestroySocket(connectedsocket);
 500                 connectedsocket = NULL;
 501                 theApp->ShowConnectionState();
 502                 theStats::GetServerConnectTimer()->StopTimer();
 503                 return true;
 504         } else {
 505                 return false;
 506         }
 507 }
 508
 509
 510 CServerConnect::CServerConnect(CServerList* in_serverlist, amuleIPV4Address &address)
 511 : m_idRetryTimer(theApp,ID_SERVER_RETRY_TIMER_EVENT)
 512 {
 513         connectedsocket = NULL;
 514         used_list = in_serverlist;
 515         max_simcons = (thePrefs::IsSafeServerConnectEnabled()) ? 1 : 2;
 516         connecting = false;
 517         connected = false;
 518         clientid = 0;
 519         singleconnecting = false;
 520
 521         // initalize socket for udp packets
 522         serverudpsocket = new CServerUDPSocket(address, thePrefs::GetProxyData());
 523 }
 524
 525
 526 CServerConnect::~CServerConnect()
 527 {
 528         m_idRetryTimer.Stop();
 529         // stop all connections
 530         StopConnectionTry();
 531         // close connected socket, if any
 532         DestroySocket(connectedsocket);
 533         connectedsocket = NULL;
 534         // close udp socket
 535         delete serverudpsocket;
 536 }
 537
 538
 539 CServer* CServerConnect::GetCurrentServer()
 540 {
 541         if (IsConnected() && connectedsocket) {
 542                 return connectedsocket->cur_server;
 543         }
 544         return NULL;
 545 }
 546
 547
 548 void CServerConnect::SetClientID(uint32 newid)
 549 {
 550         clientid = newid;
 551
 552         if (!::IsLowID(newid)) {
 553                 theApp->SetPublicIP(newid);
 554         }
 555 }
 556
 557
 558 void CServerConnect::DestroySocket(CServerSocket* pSck)
 559 {
 560         if (pSck == NULL) {
 561                 return;
 562         }
 563         m_lstOpenSockets.remove(pSck);
 564         pSck->Destroy();
 565 }
 566
 567
 568 bool CServerConnect::IsLocalServer(uint32 dwIP, uint16 nPort)
 569 {
 570         if (IsConnected()){
 571                 if (connectedsocket->cur_server->GetIP() == dwIP && connectedsocket->cur_server->GetPort() == nPort)
 572                         return true;
 573         }
 574         return false;
 575 }
 576
 577
 578 void CServerConnect::KeepConnectionAlive()
 579 {
 580         uint32 dwServerKeepAliveTimeout = thePrefs::GetServerKeepAliveTimeout();
 581         if (dwServerKeepAliveTimeout && connected && connectedsocket &&
 582         connectedsocket->connectionstate == CS_CONNECTED &&
 583         GetTickCount() - connectedsocket->GetLastTransmission() >= dwServerKeepAliveTimeout) {
 584                 // "Ping" the server if the TCP connection was not used for the specified interval with
 585                 // an empty publish files packet -> recommended by lugdunummaster himself!
 586
 587                 CMemFile files(4);
 588                 files.WriteUInt32(0); //nFiles
 589
 590                 CPacket* packet = new CPacket(files, OP_EDONKEYPROT, OP_OFFERFILES);
 591                 #ifdef DEBUG_CLIENT_PROTOCOL
 592                 AddLogLineM(true,wxT("Client: OP_OFFERFILES"));
 593                 #endif
 594                 // compress packet
 595                 //   - this kind of data is highly compressable (N * (1 MD4 and at least 3 string meta data tags and 1 integer meta data tag))
 596                 //   - the min. amount of data needed for one published file is ~100 bytes
 597                 //   - this function is called once when connecting to a server and when a file becomes shareable - so, it's called rarely.
 598                 //   - if the compressed size is still >= the original size, we send the uncompressed packet
 599                 // therefor we always try to compress the packet
 600                 theStats::AddUpOverheadServer(packet->GetPacketSize());
 601                 connectedsocket->SendPacket(packet,true);
 602
 603                 AddDebugLogLineM(false, logServer, wxT("Refreshing server connection"));
 604         }
 605 }
 606
 607 // true if the IP is one of a server which we currently try to connect to
 608 bool CServerConnect::AwaitingTestFromIP(uint32 dwIP)
 609 {
 610         ServerSocketMap::iterator it = connectionattemps.begin();
 611
 612         while (it != connectionattemps.end()) {
 613                 const CServerSocket* serversocket = it->second;
 614                 if (serversocket && (serversocket->GetConnectionState() == CS_WAITFORLOGIN) &&
 615                         (serversocket->GetServerIP() == dwIP)) {
 616                         return true;
 617                 }
 618                 ++it;
 619         }
 620
 621         return false;
 622 }
 623
 624
 625 bool CServerConnect::IsConnectedObfuscated() const
 626 {
 627         return connectedsocket != NULL && connectedsocket->IsObfusicating();
 628 }
 629
 630
 631 void CServerConnect::OnServerHostnameResolved(void* socket, uint32 ip)
 632 {
 633         // The socket object might have been deleted while we waited for the hostname
 634         // to be resolved, so we check if it's still among the open sockets.
 635         SocketsList::iterator it = std::find(m_lstOpenSockets.begin(), m_lstOpenSockets.end(), socket);
 636         if (it != m_lstOpenSockets.end()) {
 637                 (*it)->OnHostnameResolved(ip);
 638         } else {
 639                 printf("Received late result of DNS lookup, discarding.\n");
 640         }
 641 }
 642
 643
 644 // File_checked_for_headers