src/ServerConnect.cpp

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2011 aMule Team ( admin@amule.org / http://www.amule.org )
   5 // Copyright (c) 2002-2011 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 "IPFilter.h"           // Needed for theApp->ipfilter->IsReady()
  49 #include <common/Format.h>
  50
  51
  52 //#define DEBUG_CLIENT_PROTOCOL
  53
  54
  55 void CServerConnect::TryAnotherConnectionrequest()
  56 {
  57         if (m_recurseTryAnotherConnectionrequest) {
  58                 return;
  59         }
  60         if ( connectionattemps.size() < (unsigned)(( thePrefs::IsSafeServerConnectEnabled()) ? 1 : 2) ) {
  61
  62                 CServer*  next_server = used_list->GetNextServer(m_bTryObfuscated);
  63
  64                 if ( thePrefs::AutoConnectStaticOnly() ) {
  65                         while (next_server && !next_server->IsStaticMember()) {
  66                                 next_server = used_list->GetNextServer(m_bTryObfuscated);
  67                         }
  68                 }
  69
  70                 if (!next_server) {
  71                         if ( connectionattemps.empty() ) {
  72                                 m_recurseTryAnotherConnectionrequest = true;
  73                                 if (m_bTryObfuscated && !thePrefs::IsClientCryptLayerRequired()){
  74                                         AddLogLineC(_("Failed to connect to all obfuscated servers listed. Making another pass without obfuscation."));
  75                                         // try all servers on the non-obfuscated port next
  76                                         m_bTryObfuscated = false;
  77                                         ConnectToAnyServer( false, true);
  78                                 } else {
  79                                         AddLogLineC(_("Failed to connect to all servers listed. Making another pass."));
  80                                         ConnectToAnyServer( false );
  81                                 }
  82                                 m_recurseTryAnotherConnectionrequest = false;
  83                         }
  84                         return;
  85                 }
  86
  87                 ConnectToServer(next_server, true, !m_bTryObfuscated);
  88         }
  89 }
  90
  91 void CServerConnect::ConnectToAnyServer(bool prioSort, bool bNoCrypt)
  92 {
  93         if (!thePrefs::GetNetworkED2K()){
  94                 AddLogLineC(_("eD2k network disabled on preferences, not connecting."));
  95                 return;
  96         }
  97         if (!theApp->ipfilter->IsReady()) {
  98                 // do it later when ipfilter is up
  99                 theApp->ipfilter->ConnectToAnyServerWhenReady();
 100                 return;
 101         }
 102
 103         StopConnectionTry();
 104         Disconnect();
 105         connecting = true;
 106         singleconnecting = false;
 107         m_bTryObfuscated = thePrefs::IsServerCryptLayerTCPRequested() && !bNoCrypt;
 108
 109         // Barry - Only auto-connect to static server option
 110         if (thePrefs::AutoConnectStaticOnly()) {
 111                 bool anystatic = false;
 112                 CServer *next_server;
 113                 used_list->ResetServerPos();
 114                 while ((next_server = used_list->GetNextServer(false)) != NULL) {
 115                         if (next_server->IsStaticMember()) {
 116                                 anystatic = true;
 117                                 break;
 118                         }
 119                 }
 120                 if (!anystatic) {
 121                         connecting = false;
 122                         AddLogLineC(_("No valid servers to which to connect found in server list"));
 123                         return;
 124                 }
 125         }
 126
 127         if ( thePrefs::Score() && prioSort ) {
 128                 used_list->Sort();
 129         }
 130
 131         used_list->ResetServerPos();
 132
 133         if (used_list->GetServerCount()==0 ) {
 134                 connecting = false;
 135                 AddLogLineC(_("No valid servers to which to connect found in server list"));
 136                 return;
 137         }
 138
 139         theApp->listensocket->Process();
 140
 141         TryAnotherConnectionrequest();
 142 }
 143
 144
 145 void CServerConnect::ConnectToServer(CServer* server, bool multiconnect, bool bNoCrypt)
 146 {
 147         if (!thePrefs::GetNetworkED2K()){
 148                 AddLogLineC(_("eD2k network disabled on preferences, not connecting."));
 149                 return;
 150         }
 151
 152         if (!multiconnect) {
 153                 StopConnectionTry();
 154                 Disconnect();
 155         }
 156         connecting = true;
 157         singleconnecting = !multiconnect;
 158
 159         CServerSocket* newsocket = new CServerSocket(this, thePrefs::GetProxyData());
 160         m_lstOpenSockets.push_back(newsocket);
 161         newsocket->ConnectToServer(server, bNoCrypt);
 162
 163         connectionattemps[GetTickCount()] = newsocket;
 164 }
 165
 166
 167 void CServerConnect::StopConnectionTry()
 168 {
 169         connectionattemps.clear();
 170         connecting = false;
 171         singleconnecting = false;
 172
 173         if (m_idRetryTimer.IsRunning())
 174         {
 175           m_idRetryTimer.Stop();
 176         }
 177
 178         // close all currenty opened sockets except the one which is connected to our current server
 179         for(SocketsList::iterator it = m_lstOpenSockets.begin(); it != m_lstOpenSockets.end(); ) {
 180                 CServerSocket *pSck = *it++;
 181                 if (pSck == connectedsocket)            // don't destroy socket which is connected to server
 182                         continue;
 183                 if (pSck->m_bIsDeleting == false)       // don't destroy socket if it is going to destroy itself later on
 184                         DestroySocket(pSck);
 185         }
 186 }
 187
 188 void CServerConnect::ConnectionEstablished(CServerSocket* sender)
 189 {
 190         if (connecting == false)
 191         {
 192                 // we are already connected to another server
 193                 DestroySocket(sender);
 194                 return;
 195         }
 196
 197         if (sender->GetConnectionState() == CS_WAITFORLOGIN) {
 198                 AddLogLineN(CFormat( _("Connected to %s (%s:%i)") )
 199                         % sender->cur_server->GetListName()
 200                         % sender->cur_server->GetFullIP()
 201                         % sender->cur_server->GetPort() );
 202
 203                 //send loginpacket
 204                 CServer* update = theApp->serverlist->GetServerByAddress( sender->cur_server->GetAddress(), sender->cur_server->GetPort() );
 205                 if (update){
 206                         update->ResetFailedCount();
 207                         Notify_ServerRefresh( update );
 208                 }
 209
 210                 CMemFile data(256);
 211                 data.WriteHash(thePrefs::GetUserHash());
 212                 // Why pass an ID, if we are loggin in?
 213                 data.WriteUInt32(GetClientID());
 214                 data.WriteUInt16(thePrefs::GetPort());
 215                 data.WriteUInt32(4); // tagcount
 216
 217                 // Kry - Server doesn't support VBT tags afaik.
 218                 // Not to mention we don't know its flags yet
 219
 220                 CTagString tagname(CT_NAME,thePrefs::GetUserNick());
 221                 tagname.WriteTagToFile(&data);
 222
 223                 CTagInt32 tagversion(CT_VERSION,EDONKEYVERSION);
 224                 tagversion.WriteTagToFile(&data);
 225
 226                 uint32 dwCryptFlags = 0;
 227
 228                 if (thePrefs::IsClientCryptLayerSupported()) {
 229                         dwCryptFlags |= SRVCAP_SUPPORTCRYPT;
 230                 }
 231
 232                 if (thePrefs::IsClientCryptLayerRequested()) {
 233                         dwCryptFlags |= SRVCAP_REQUESTCRYPT;
 234                 }
 235
 236                 if (thePrefs::IsClientCryptLayerRequired()) {
 237                         dwCryptFlags |= SRVCAP_REQUIRECRYPT;
 238                 }
 239
 240                 // FLAGS for server connection
 241                 CTagInt32 tagflags(CT_SERVER_FLAGS, CAPABLE_ZLIB
 242                                                                 | CAPABLE_AUXPORT
 243                                                                 | CAPABLE_NEWTAGS
 244                                                                 | CAPABLE_UNICODE
 245                                                                 | CAPABLE_LARGEFILES
 246                                                                 | dwCryptFlags
 247                                                                                         );
 248
 249                 tagflags.WriteTagToFile(&data);
 250
 251                 // eMule Version (14-Mar-2004: requested by lugdunummaster (need for LowID clients which have no chance
 252                 // to send an Hello packet to the server during the callback test))
 253                 CTagInt32 tagMuleVersion(CT_EMULE_VERSION,
 254                         (SO_AMULE       << 24) |
 255                         make_full_ed2k_version(VERSION_MJR, VERSION_MIN, VERSION_UPDATE)
 256                          );
 257                 tagMuleVersion.WriteTagToFile(&data);
 258
 259                 CPacket* packet = new CPacket(data, OP_EDONKEYPROT, OP_LOGINREQUEST);
 260                 #ifdef DEBUG_CLIENT_PROTOCOL
 261                 AddLogLineC(wxT("Client: OP_LOGINREQUEST"));
 262                 AddLogLineC(wxString(wxT("        Hash     : ")) << thePrefs::GetUserHash().Encode());
 263                 AddLogLineC(wxString(wxT("        ClientID : ")) << GetClientID());
 264                 AddLogLineC(wxString(wxT("        Port     : ")) << thePrefs::GetPort());
 265                 AddLogLineC(wxString(wxT("        User Nick: ")) << thePrefs::GetUserNick());
 266                 AddLogLineC(wxString(wxT("        Edonkey  : ")) << EDONKEYVERSION);
 267                 #endif
 268                 theStats::AddUpOverheadServer(packet->GetPacketSize());
 269                 SendPacket(packet, true, sender);
 270         } else if (sender->GetConnectionState() == CS_CONNECTED){
 271                 theStats::AddReconnect();
 272                 theStats::GetServerConnectTimer()->ResetTimer();
 273                 connected = true;
 274                 AddLogLineC(CFormat( _("Connection established on: %s") ) % sender->cur_server->GetListName());
 275                 connectedsocket = sender;
 276
 277                 StopConnectionTry();
 278
 279                 CServer* update = theApp->serverlist->GetServerByAddress(connectedsocket->cur_server->GetAddress(),sender->cur_server->GetPort());
 280                 if ( update ) {
 281                         Notify_ServerHighlight(update, true);
 282                 }
 283
 284                 theApp->sharedfiles->ClearED2KPublishInfo();
 285
 286                 Notify_ServerRemoveDead();
 287
 288                 // tecxx 1609 2002 - serverlist update
 289                 if (thePrefs::AddServersFromServer()) {
 290                         CPacket* packet = new CPacket(OP_GETSERVERLIST, 0, OP_EDONKEYPROT);
 291                         theStats::AddUpOverheadServer(packet->GetPacketSize());
 292                         SendPacket(packet, true);
 293                         #ifdef DEBUG_CLIENT_PROTOCOL
 294                         AddLogLineC(wxT("Client: OP_GETSERVERLIST"));
 295                         #endif
 296                 }
 297         }
 298
 299         theApp->ShowConnectionState();
 300 }
 301
 302
 303 bool CServerConnect::SendPacket(CPacket* packet,bool delpacket, CServerSocket* to)
 304 {
 305         if (!to) {
 306                 if (connected) {
 307                         connectedsocket->SendPacket(packet, delpacket, true);
 308                         return true;
 309                 } else {
 310                         if ( delpacket ) {
 311                                 delete packet;
 312                         }
 313
 314                         return false;
 315                 }
 316         } else {
 317                 to->SendPacket(packet, delpacket, true);
 318                 return true;
 319         }
 320 }
 321
 322
 323 bool CServerConnect::SendUDPPacket(CPacket* packet, CServer* host, bool delpacket, bool rawpacket, uint16 port_offset)
 324 {
 325         if (connected) {
 326                 serverudpsocket->SendPacket(packet, host, delpacket, rawpacket, port_offset);
 327         } else if (delpacket) {
 328                 delete packet;
 329         }
 330
 331         return true;
 332 }
 333
 334
 335 void CServerConnect::ConnectionFailed(CServerSocket* sender)
 336 {
 337         if (connecting == false && sender != connectedsocket)
 338         {
 339                 // just return, cleanup is done by the socket itself
 340                 return;
 341         }
 342         //messages
 343         CServer* pServer = theApp->serverlist->GetServerByAddress(sender->cur_server->GetAddress(), sender->cur_server->GetPort());
 344         switch (sender->GetConnectionState()){
 345                 case CS_FATALERROR:
 346                         AddLogLineC(_("Fatal Error while trying to connect. Internet connection might be down"));
 347                         break;
 348                 case CS_DISCONNECTED:
 349                         theApp->sharedfiles->ClearED2KPublishInfo();
 350                         AddLogLineN(CFormat( _("Lost connection to %s (%s:%i)") )
 351                                 % sender->cur_server->GetListName()
 352                                 % sender->cur_server->GetFullIP()
 353                                 % sender->cur_server->GetPort() );
 354
 355                         if (pServer){
 356                                 Notify_ServerHighlight(pServer, false);
 357                         }
 358                         break;
 359                 case CS_SERVERDEAD:
 360                         AddLogLineN(CFormat( _("%s (%s:%i) appears to be dead.") )
 361                                 % sender->cur_server->GetListName()
 362                                 % sender->cur_server->GetFullIP()
 363                                 % sender->cur_server->GetPort() );
 364
 365                         if (pServer) {
 366                                 pServer->AddFailedCount();
 367                                 Notify_ServerRefresh( pServer );
 368                         }
 369                         break;
 370                 case CS_ERROR:
 371                         break;
 372                 case CS_SERVERFULL:
 373                         AddLogLineN(CFormat( _("%s (%s:%i) appears to be full.") )
 374                                 % sender->cur_server->GetListName()
 375                                 % sender->cur_server->GetFullIP()
 376                                 % sender->cur_server->GetPort() );
 377
 378                         break;
 379                 case CS_NOTCONNECTED:;
 380                         break;
 381         }
 382
 383         // IMPORTANT: mark this socket not to be deleted in StopConnectionTry(),
 384         // because it will delete itself after this function!
 385         sender->m_bIsDeleting = true;
 386
 387         switch (sender->GetConnectionState()) {
 388                 case CS_FATALERROR:{
 389                         bool autoretry= !singleconnecting;
 390                         StopConnectionTry();
 391                         if ((thePrefs::Reconnect()) && (autoretry) && (!m_idRetryTimer.IsRunning())) {
 392                                 AddLogLineN(CFormat(wxPLURAL("Automatic connection to server will retry in %d second", "Automatic connection to server will retry in %d seconds", CS_RETRYCONNECTTIME)) % CS_RETRYCONNECTTIME);
 393                                 m_idRetryTimer.Start(1000*CS_RETRYCONNECTTIME);
 394                         }
 395                         break;
 396                 }
 397                 case CS_DISCONNECTED:{
 398                         theApp->sharedfiles->ClearED2KPublishInfo();
 399                         connected = false;
 400                         Notify_ServerHighlight(sender->cur_server,false);
 401                         if (connectedsocket)  {
 402                                 connectedsocket->Close();
 403                         }
 404                         connectedsocket = NULL;
 405                         theApp->searchlist->StopSearch(true);
 406                         Notify_SearchCancel();
 407                         theStats::GetServerConnectTimer()->StopTimer();
 408                         if (thePrefs::Reconnect() && !connecting){
 409                                 ConnectToAnyServer();
 410                         }
 411
 412                         AddLogLineC(_("Connection lost") );
 413                         break;
 414                 }
 415                 case CS_ERROR:
 416                 case CS_NOTCONNECTED:{
 417                         if (!connecting)
 418                                 break;
 419                         AddLogLineN(CFormat( _("Connecting to %s (%s:%i) failed.") )
 420                                 % sender->info
 421                                 % sender->cur_server->GetFullIP()
 422                                 % sender->cur_server->GetPort() );
 423                 }
 424                 case CS_SERVERDEAD:
 425                 case CS_SERVERFULL:{
 426                         if (!connecting) {
 427                                 break;
 428                         }
 429                         if (singleconnecting) {
 430                                 if (pServer && sender->IsServerCryptEnabledConnection() && !thePrefs::IsClientCryptLayerRequired()){
 431                                         // try reconnecting without obfuscation
 432                                         ConnectToServer(pServer, false, true);
 433                                         break;
 434                                 }
 435
 436                                 StopConnectionTry();
 437                                 break;
 438                         }
 439
 440                         ServerSocketMap::iterator it = connectionattemps.begin();
 441                         while ( it != connectionattemps.end() ){
 442                                 if ( it->second == sender ) {
 443                                         connectionattemps.erase( it );
 444                                         break;
 445                                 }
 446                                 ++it;
 447                         }
 448                         TryAnotherConnectionrequest();
 449                 }
 450         }
 451         theApp->ShowConnectionState();
 452 }
 453
 454 void CServerConnect::CheckForTimeout()
 455 {
 456         uint32 dwCurTick = GetTickCount();
 457
 458         ServerSocketMap::iterator it = connectionattemps.begin();
 459         while ( it != connectionattemps.end() ){
 460                 if ( !it->second ) {
 461                         AddLogLineN(_("ERROR: Socket invalid at timeout check"));
 462                         connectionattemps.erase( it );
 463                         return;
 464                 }
 465
 466                 if ( dwCurTick - it->first > CONSERVTIMEOUT) {
 467                         uint32 key = it->first;
 468                         CServerSocket* value = it->second;
 469                         ++it;
 470                         if (!value->IsSolving()) {
 471                                 AddLogLineN(CFormat( _("Connection attempt to %s (%s:%i) timed out.") )
 472                                         % value->info
 473                                         % value->cur_server->GetFullIP()
 474                                         % value->cur_server->GetPort() );
 475
 476                                 connectionattemps.erase( key );
 477
 478                                 TryAnotherConnectionrequest();
 479                                 DestroySocket( value );
 480                         }
 481                 } else {
 482                         ++it;
 483                 }
 484         }
 485 }
 486
 487
 488 bool CServerConnect::Disconnect()
 489 {
 490         if (connected && connectedsocket) {
 491                 theApp->sharedfiles->ClearED2KPublishInfo();
 492
 493                 connected = false;
 494
 495                 CServer* update = theApp->serverlist->GetServerByAddress(
 496                         connectedsocket->cur_server->GetAddress(),
 497                         connectedsocket->cur_server->GetPort());
 498                 Notify_ServerHighlight(update, false);
 499                 theApp->SetPublicIP(0);
 500                 DestroySocket(connectedsocket);
 501                 connectedsocket = NULL;
 502                 theApp->ShowConnectionState();
 503                 theStats::GetServerConnectTimer()->StopTimer();
 504                 return true;
 505         } else {
 506                 return false;
 507         }
 508 }
 509
 510
 511 CServerConnect::CServerConnect(CServerList* in_serverlist, amuleIPV4Address &address)
 512 : m_idRetryTimer(theApp,ID_SERVER_RETRY_TIMER_EVENT)
 513 {
 514         connectedsocket = NULL;
 515         used_list = in_serverlist;
 516         max_simcons = (thePrefs::IsSafeServerConnectEnabled()) ? 1 : 2;
 517         connecting = false;
 518         connected = false;
 519         clientid = 0;
 520         singleconnecting = false;
 521         m_recurseTryAnotherConnectionrequest = false;
 522
 523         // initalize socket for udp packets
 524         if (thePrefs::GetNetworkED2K()) {
 525                 serverudpsocket = new CServerUDPSocket(address, thePrefs::GetProxyData());
 526         } else {
 527                 serverudpsocket = NULL;
 528         }
 529 }
 530
 531
 532 CServerConnect::~CServerConnect()
 533 {
 534         m_idRetryTimer.Stop();
 535         // stop all connections
 536         StopConnectionTry();
 537         // close connected socket, if any
 538         DestroySocket(connectedsocket);
 539         connectedsocket = NULL;
 540         // close udp socket
 541         delete serverudpsocket;
 542 }
 543
 544
 545 CServer* CServerConnect::GetCurrentServer()
 546 {
 547         if (IsConnected() && connectedsocket) {
 548                 return connectedsocket->cur_server;
 549         }
 550         return NULL;
 551 }
 552
 553
 554 void CServerConnect::SetClientID(uint32 newid)
 555 {
 556         clientid = newid;
 557
 558         if (!::IsLowID(newid)) {
 559                 theApp->SetPublicIP(newid);
 560         }
 561 }
 562
 563
 564 void CServerConnect::DestroySocket(CServerSocket* pSck)
 565 {
 566         if (pSck == NULL) {
 567                 return;
 568         }
 569         m_lstOpenSockets.remove(pSck);
 570         pSck->Destroy();
 571 }
 572
 573
 574 bool CServerConnect::IsLocalServer(uint32 dwIP, uint16 nPort)
 575 {
 576         if (IsConnected()){
 577                 if (connectedsocket->cur_server->GetIP() == dwIP && connectedsocket->cur_server->GetPort() == nPort)
 578                         return true;
 579         }
 580         return false;
 581 }
 582
 583
 584 void CServerConnect::KeepConnectionAlive()
 585 {
 586         uint32 dwServerKeepAliveTimeout = thePrefs::GetServerKeepAliveTimeout();
 587         if (dwServerKeepAliveTimeout && connected && connectedsocket &&
 588         connectedsocket->connectionstate == CS_CONNECTED &&
 589         GetTickCount() - connectedsocket->GetLastTransmission() >= dwServerKeepAliveTimeout) {
 590                 // "Ping" the server if the TCP connection was not used for the specified interval with
 591                 // an empty publish files packet -> recommended by lugdunummaster himself!
 592
 593                 CMemFile files(4);
 594                 files.WriteUInt32(0); //nFiles
 595
 596                 CPacket* packet = new CPacket(files, OP_EDONKEYPROT, OP_OFFERFILES);
 597                 #ifdef DEBUG_CLIENT_PROTOCOL
 598                 AddLogLineC(wxT("Client: OP_OFFERFILES"));
 599                 #endif
 600                 // compress packet
 601                 //   - this kind of data is highly compressable (N * (1 MD4 and at least 3 string meta data tags and 1 integer meta data tag))
 602                 //   - the min. amount of data needed for one published file is ~100 bytes
 603                 //   - this function is called once when connecting to a server and when a file becomes shareable - so, it's called rarely.
 604                 //   - if the compressed size is still >= the original size, we send the uncompressed packet
 605                 // therefor we always try to compress the packet
 606                 theStats::AddUpOverheadServer(packet->GetPacketSize());
 607                 connectedsocket->SendPacket(packet,true);
 608
 609                 AddDebugLogLineN(logServer, wxT("Refreshing server connection"));
 610         }
 611 }
 612
 613 // true if the IP is one of a server which we currently try to connect to
 614 bool CServerConnect::AwaitingTestFromIP(uint32 dwIP)
 615 {
 616         ServerSocketMap::iterator it = connectionattemps.begin();
 617
 618         while (it != connectionattemps.end()) {
 619                 const CServerSocket* serversocket = it->second;
 620                 if (serversocket && (serversocket->GetConnectionState() == CS_WAITFORLOGIN) &&
 621                         (serversocket->GetServerIP() == dwIP)) {
 622                         return true;
 623                 }
 624                 ++it;
 625         }
 626
 627         return false;
 628 }
 629
 630
 631 bool CServerConnect::IsConnectedObfuscated() const
 632 {
 633         return connectedsocket != NULL && connectedsocket->IsObfusicating();
 634 }
 635
 636
 637 void CServerConnect::OnServerHostnameResolved(void* socket, uint32 ip)
 638 {
 639         // The socket object might have been deleted while we waited for the hostname
 640         // to be resolved, so we check if it's still among the open sockets.
 641         SocketsList::iterator it = std::find(m_lstOpenSockets.begin(), m_lstOpenSockets.end(), socket);
 642         if (it != m_lstOpenSockets.end()) {
 643                 (*it)->OnHostnameResolved(ip);
 644         } else {
 645                 AddLogLineNS(_("Received late result of DNS lookup, discarding."));
 646         }
 647 }
 648
 649
 650 // File_checked_for_headers