src/inspsocket.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "socket.h"
  15 #include "configreader.h"
  16 #include "inspstring.h"
  17 #include "socketengine.h"
  18 #include "inspircd.h"
  19
  20 using irc::sockets::OpenTCPSocket;
  21
  22 bool InspSocket::Readable()
  23 {
  24         return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false));
  25 }
  26
  27 InspSocket::InspSocket(InspIRCd* SI)
  28 {
  29         this->Timeout = NULL;
  30         this->state = I_DISCONNECTED;
  31         this->fd = -1;
  32         this->WaitingForWriteEvent = false;
  33         this->Instance = SI;
  34         this->IsIOHooked = false;
  35 }
  36
  37 InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
  38 {
  39         this->Timeout = NULL;
  40         this->fd = newfd;
  41         this->state = I_CONNECTED;
  42         strlcpy(this->IP,ip,MAXBUF);
  43         this->WaitingForWriteEvent = false;
  44         this->Instance = SI;
  45         this->IsIOHooked = false;
  46         if (this->fd > -1)
  47                 this->Instance->SE->AddFd(this);
  48 }
  49
  50 InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime, const std::string &connectbindip)
  51 {
  52         this->cbindip = connectbindip;
  53         this->fd = -1;
  54         this->Instance = SI;
  55         strlcpy(host,ipaddr.c_str(),MAXBUF);
  56         this->WaitingForWriteEvent = false;
  57         this->IsIOHooked = false;
  58         this->Timeout = NULL;
  59         if (listening)
  60         {
  61                 if ((this->fd = OpenTCPSocket(host)) == ERROR)
  62                 {
  63                         this->fd = -1;
  64                         this->state = I_ERROR;
  65                         this->OnError(I_ERR_SOCKET);
  66                         return;
  67                 }
  68                 else
  69                 {
  70                         if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str()))
  71                         {
  72                                 this->Close();
  73                                 this->fd = -1;
  74                                 this->state = I_ERROR;
  75                                 this->OnError(I_ERR_BIND);
  76                                 this->ClosePending = true;
  77                                 return;
  78                         }
  79                         else
  80                         {
  81                                 this->state = I_LISTENING;
  82                                 if (this->fd > -1)
  83                                 {
  84                                         if (!this->Instance->SE->AddFd(this))
  85                                         {
  86                                                 this->Close();
  87                                                 this->state = I_ERROR;
  88                                                 this->OnError(I_ERR_NOMOREFDS);
  89                                         }
  90                                 }
  91                                 return;
  92                         }
  93                 }
  94         }
  95         else
  96         {
  97                 strlcpy(this->host,ipaddr.c_str(),MAXBUF);
  98                 this->port = aport;
  99
 100                 bool ipvalid = true;
 101 #ifdef IPV6
 102                 if (strchr(host,':'))
 103                 {
 104                         in6_addr n;
 105                         if (inet_pton(AF_INET6, host, &n) < 1)
 106                                 ipvalid = false;
 107                 }
 108                 else
 109                 {
 110                         in_addr n;
 111                         if (inet_aton(host,&n) < 1)
 112                                 ipvalid = false;
 113                 }
 114 #else
 115                 in_addr n;
 116                 if (inet_aton(host,&n) < 1)
 117                         ipvalid = false;
 118 #endif
 119                 if (!ipvalid)
 120                 {
 121                         this->Instance->Log(DEBUG,"BUG: Hostname passed to InspSocket, rather than an IP address!");
 122                         this->Close();
 123                         this->fd = -1;
 124                         this->state = I_ERROR;
 125                         this->OnError(I_ERR_RESOLVE);
 126                         return;
 127                 }
 128                 else
 129                 {
 130                         strlcpy(this->IP,host,MAXBUF);
 131                         timeout_val = maxtime;
 132                         if (!this->DoConnect())
 133                         {
 134                                 this->Close();
 135                                 this->fd = -1;
 136                                 this->state = I_ERROR;
 137                                 this->OnError(I_ERR_CONNECT);
 138                                 return;
 139                         }
 140                 }
 141         }
 142 }
 143
 144 void InspSocket::WantWrite()
 145 {
 146         this->Instance->SE->WantWrite(this);
 147         this->WaitingForWriteEvent = true;
 148 }
 149
 150 void InspSocket::SetQueues(int nfd)
 151 {
 152         // attempt to increase socket sendq and recvq as high as its possible
 153         int sendbuf = 32768;
 154         int recvbuf = 32768;
 155         setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
 156         setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
 157 }
 158
 159 /* Most irc servers require you to specify the ip you want to bind to.
 160  * If you dont specify an IP, they rather dumbly bind to the first IP
 161  * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP
 162  * addresses we've bound server ports to, and we try and bind our outbound
 163  * connections to the first usable non-loopback and non-any IP we find.
 164  * This is easier to configure when you have a lot of links and a lot
 165  * of servers to configure.
 166  */
 167 bool InspSocket::BindAddr(const std::string &ip)
 168 {
 169         ConfigReader Conf(this->Instance);
 170         socklen_t size = sizeof(sockaddr_in);
 171 #ifdef IPV6
 172         bool v6 = false;
 173         /* Are we looking for a binding to fit an ipv6 host? */
 174         if ((ip.empty()) || (ip.find(':') != std::string::npos))
 175                 v6 = true;
 176 #endif
 177         int j = 0;
 178         while (j < Conf.Enumerate("bind") || (!ip.empty()))
 179         {
 180                 std::string IP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip;
 181                 if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers")
 182                 {
 183                         if (!ip.empty() || ((IP != "*") && (IP != "127.0.0.1") && (IP != "") && (IP != "::1")))
 184                         {
 185                                 sockaddr* s = new sockaddr[2];
 186 #ifdef IPV6
 187                                 if (v6)
 188                                 {
 189                                         in6_addr n;
 190                                         if (inet_pton(AF_INET6, IP.c_str(), &n) > 0)
 191                                         {
 192                                                 memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(n));
 193                                                 ((sockaddr_in6*)s)->sin6_family = AF_INET6;
 194                                                 size = sizeof(sockaddr_in6);
 195                                         }
 196                                         else
 197                                         {
 198                                                 delete[] s;
 199                                                 j++;
 200                                                 continue;
 201                                         }
 202                                 }
 203                                 else
 204                                 {
 205                                         in_addr n;
 206                                         if (inet_aton(IP.c_str(), &n) > 0)
 207                                         {
 208                                                 ((sockaddr_in*)s)->sin_addr = n;
 209                                                 ((sockaddr_in*)s)->sin_family = AF_INET;
 210                                         }
 211                                         else
 212                                         {
 213                                                 delete[] s;
 214                                                 j++;
 215                                                 continue;
 216                                         }
 217                                 }
 218 #else
 219                                 in_addr n;
 220                                 if (insp_aton(IP.c_str(), &n) > 0)
 221                                 {
 222                                         ((sockaddr_in*)s)->sin_addr = n;
 223                                         ((sockaddr_in*)s)->sin_family = AF_INET;
 224                                 }
 225                                 else
 226                                 {
 227                                         delete[] s;
 228                                         j++;
 229                                         continue;
 230                                 }
 231 #endif
 232
 233                                 if (bind(this->fd, s, size) < 0)
 234                                 {
 235                                         this->state = I_ERROR;
 236                                         this->OnError(I_ERR_BIND);
 237                                         this->fd = -1;
 238                                         delete[] s;
 239                                         return false;
 240                                 }
 241
 242                                 delete[] s;
 243                                 return true;
 244                         }
 245                 }
 246                 j++;
 247         }
 248         return true;
 249 }
 250
 251 bool InspSocket::DoConnect()
 252 {
 253         sockaddr* addr = new sockaddr[2];
 254         socklen_t size = sizeof(sockaddr_in);
 255 #ifdef IPV6
 256         bool v6 = false;
 257         if ((!*this->host) || strchr(this->host, ':'))
 258                 v6 = true;
 259
 260         if (v6)
 261         {
 262                 this->fd = socket(AF_INET6, SOCK_STREAM, 0);
 263                 if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)))
 264                 {
 265                         if (!this->BindAddr(this->cbindip))
 266                         {
 267                                 delete[] addr;
 268                                 return false;
 269                         }
 270                 }
 271         }
 272         else
 273         {
 274                 this->fd = socket(AF_INET, SOCK_STREAM, 0);
 275                 if (this->fd > -1)
 276                 {
 277                         if (!this->BindAddr(this->cbindip))
 278                         {
 279                                 delete[] addr;
 280                                 return false;
 281                         }
 282                 }
 283         }
 284 #else
 285         this->fd = socket(AF_INET, SOCK_STREAM, 0);
 286         if (this->fd > -1)
 287         {
 288                 if (!this->BindAddr(this->cbindip))
 289                 {
 290                         delete[] addr;
 291                         return false;
 292                 }
 293         }
 294 #endif
 295
 296         if (this->fd == -1)
 297         {
 298                 this->state = I_ERROR;
 299                 this->OnError(I_ERR_SOCKET);
 300                 delete[] addr;
 301                 return false;
 302         }
 303
 304 #ifdef IPV6
 305         if (v6)
 306         {
 307                 in6_addr addy;
 308                 if (inet_pton(AF_INET6, this->host, &addy) > 0)
 309                 {
 310                         ((sockaddr_in6*)addr)->sin6_family = AF_INET6;
 311                         memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy));
 312                         ((sockaddr_in6*)addr)->sin6_port = htons(this->port);
 313                         size = sizeof(sockaddr_in6);
 314                 }
 315         }
 316         else
 317         {
 318                 in_addr addy;
 319                 if (inet_aton(this->host, &addy) > 0)
 320                 {
 321                         ((sockaddr_in*)addr)->sin_family = AF_INET;
 322                         ((sockaddr_in*)addr)->sin_addr = addy;
 323                         ((sockaddr_in*)addr)->sin_port = htons(this->port);
 324                 }
 325         }
 326 #else
 327         in_addr addy;
 328         if (inet_aton(this->host, &addy) > 0)
 329         {
 330                 ((sockaddr_in*)addr)->sin_family = AF_INET;
 331                 ((sockaddr_in*)addr)->sin_addr = addy;
 332                 ((sockaddr_in*)addr)->sin_port = htons(this->port);
 333         }
 334 #endif
 335
 336         int flags = fcntl(this->fd, F_GETFL, 0);
 337         fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
 338
 339         if (connect(this->fd, (sockaddr*)addr, size) == -1)
 340         {
 341                 if (errno != EINPROGRESS)
 342                 {
 343                         this->OnError(I_ERR_CONNECT);
 344                         this->Close();
 345                         this->state = I_ERROR;
 346                         return false;
 347                 }
 348
 349                 this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());
 350                 this->Instance->Timers->AddTimer(this->Timeout);
 351         }
 352         this->state = I_CONNECTING;
 353         if (this->fd > -1)
 354         {
 355                 if (!this->Instance->SE->AddFd(this))
 356                 {
 357                         this->OnError(I_ERR_NOMOREFDS);
 358                         this->Close();
 359                         this->state = I_ERROR;
 360                         return false;
 361                 }
 362                 this->SetQueues(this->fd);
 363         }
 364         return true;
 365 }
 366
 367
 368 void InspSocket::Close()
 369 {
 370         /* Save this, so we dont lose it,
 371          * otherise on failure, error messages
 372          * might be inaccurate.
 373          */
 374         int save = errno;
 375         if (this->fd > -1)
 376         {
 377                 if (this->IsIOHooked && Instance->Config->GetIOHook(this))
 378                 {
 379                         try
 380                         {
 381                                 Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);
 382                         }
 383                         catch (CoreException& modexcept)
 384                         {
 385                                 Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 386                         }
 387                 }
 388                 this->OnClose();
 389                 shutdown(this->fd,2);
 390                 close(this->fd);
 391         }
 392         errno = save;
 393 }
 394
 395 std::string InspSocket::GetIP()
 396 {
 397         return this->IP;
 398 }
 399
 400 char* InspSocket::Read()
 401 {
 402         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 403                 return NULL;
 404
 405         int n = 0;
 406
 407         if (this->IsIOHooked)
 408         {
 409                 int result2 = 0;
 410                 int MOD_RESULT = 0;
 411                 try
 412                 {
 413                         MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);
 414                 }
 415                 catch (CoreException& modexcept)
 416                 {
 417                         Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 418                 }
 419                 if (MOD_RESULT < 0)
 420                 {
 421                         n = -1;
 422                         errno = EAGAIN;
 423                 }
 424                 else
 425                 {
 426                         n = result2;
 427                 }
 428         }
 429         else
 430         {
 431                 n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
 432         }
 433
 434         if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
 435         {
 436                 ibuf[n] = 0;
 437                 return ibuf;
 438         }
 439         else
 440         {
 441                 int err = errno;
 442                 if (err == EAGAIN)
 443                         return "";
 444                 else
 445                         return NULL;
 446         }
 447 }
 448
 449 void InspSocket::MarkAsClosed()
 450 {
 451 }
 452
 453 // There are two possible outcomes to this function.
 454 // It will either write all of the data, or an undefined amount.
 455 // If an undefined amount is written the connection has failed
 456 // and should be aborted.
 457 int InspSocket::Write(const std::string &data)
 458 {
 459         /* Try and append the data to the back of the queue, and send it on its way
 460          */
 461         outbuffer.push_back(data);
 462         this->Instance->SE->WantWrite(this);
 463         return (!this->FlushWriteBuffer());
 464 }
 465
 466 bool InspSocket::FlushWriteBuffer()
 467 {
 468         errno = 0;
 469         if ((this->fd > -1) && (this->state == I_CONNECTED))
 470         {
 471                 if (this->IsIOHooked)
 472                 {
 473                         while (outbuffer.size() && (errno != EAGAIN))
 474                         {
 475                                 try
 476                                 {
 477                                         int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());
 478                                         if (result > 0)
 479                                         {
 480                                                 if ((unsigned int)result >= outbuffer[0].length())
 481                                                 {
 482                                                         outbuffer.pop_front();
 483                                                 }
 484                                                 else
 485                                                 {
 486                                                         std::string temp = outbuffer[0].substr(result);
 487                                                         outbuffer[0] = temp;
 488                                                         errno = EAGAIN;
 489                                                 }
 490                                         }
 491                                         else if (((result == -1) && (errno != EAGAIN)) || (result == 0))
 492                                         {
 493                                                 this->OnError(I_ERR_WRITE);
 494                                                 this->state = I_ERROR;
 495                                                 this->Instance->SE->DelFd(this);
 496                                                 this->Close();
 497                                                 return true;
 498                                         }
 499                                 }
 500                                 catch (CoreException& modexcept)
 501                                 {
 502                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 503                                         return true;
 504                                 }
 505                         }
 506                 }
 507                 else
 508                 {
 509                         /* If we have multiple lines, try to send them all,
 510                          * not just the first one -- Brain
 511                          */
 512                         while (outbuffer.size() && (errno != EAGAIN))
 513                         {
 514                                 /* Send a line */
 515                                 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
 516                                 if (result > 0)
 517                                 {
 518                                         if ((unsigned int)result >= outbuffer[0].length())
 519                                         {
 520                                                 /* The whole block was written (usually a line)
 521                                                  * Pop the block off the front of the queue,
 522                                                  * dont set errno, because we are clear of errors
 523                                                  * and want to try and write the next block too.
 524                                                  */
 525                                                 outbuffer.pop_front();
 526                                         }
 527                                         else
 528                                         {
 529                                                 std::string temp = outbuffer[0].substr(result);
 530                                                 outbuffer[0] = temp;
 531                                                 /* We didnt get the whole line out. arses.
 532                                                  * Try again next time, i guess. Set errno,
 533                                                  * because we shouldnt be writing any more now,
 534                                                  * until the socketengine says its safe to do so.
 535                                                  */
 536                                                 errno = EAGAIN;
 537                                         }
 538                                 }
 539                                 else if ((result == -1) && (errno != EAGAIN))
 540                                 {
 541                                         this->OnError(I_ERR_WRITE);
 542                                         this->state = I_ERROR;
 543                                         this->Instance->SE->DelFd(this);
 544                                         this->Close();
 545                                         return true;
 546                                 }
 547                         }
 548                 }
 549         }
 550
 551         if ((errno == EAGAIN) && (fd > -1))
 552         {
 553                 this->Instance->SE->WantWrite(this);
 554         }
 555
 556         return (fd < 0);
 557 }
 558
 559 void SocketTimeout::Tick(time_t now)
 560 {
 561         if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
 562                 return;
 563
 564         if (this->sock->state == I_CONNECTING)
 565         {
 566                 // for non-listening sockets, the timeout can occur
 567                 // which causes termination of the connection after
 568                 // the given number of seconds without a successful
 569                 // connection.
 570                 this->sock->OnTimeout();
 571                 this->sock->OnError(I_ERR_TIMEOUT);
 572                 this->sock->timeout = true;
 573                 ServerInstance->SE->DelFd(this->sock);
 574                 /* NOTE: We must set this AFTER DelFd, as we added
 575                  * this socket whilst writeable. This means that we
 576                  * must DELETE the socket whilst writeable too!
 577                  */
 578                 this->sock->state = I_ERROR;
 579                 this->sock->Close();
 580                 delete this->sock;
 581                 return;
 582         }
 583         else
 584         {
 585                 this->sock->Timeout = NULL;
 586         }
 587 }
 588
 589 bool InspSocket::Poll()
 590 {
 591         if (this->Instance->SE->GetRef(this->fd) != this)
 592                 return false;
 593
 594         int incoming = -1;
 595
 596         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 597                 return false;
 598
 599         switch (this->state)
 600         {
 601                 case I_CONNECTING:
 602                         /* Our socket was in write-state, so delete it and re-add it
 603                          * in read-state.
 604                          */
 605                         if (this->fd > -1)
 606                         {
 607                                 this->Instance->SE->DelFd(this);
 608                                 this->SetState(I_CONNECTED);
 609                                 if (!this->Instance->SE->AddFd(this))
 610                                         return false;
 611                         }
 612                         if (Instance->Config->GetIOHook(this))
 613                         {
 614                                 try
 615                                 {
 616                                         Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);
 617                                 }
 618                                 catch (CoreException& modexcept)
 619                                 {
 620                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 621                                 }
 622                         }
 623                         return this->OnConnected();
 624                 break;
 625                 case I_LISTENING:
 626                 {
 627                         sockaddr* client = new sockaddr[2];
 628                         length = sizeof (sockaddr_in);
 629                         std::string recvip;
 630 #ifdef IPV6
 631                         if ((!*this->host) || strchr(this->host, ':'))
 632                                 length = sizeof(sockaddr_in6);
 633 #endif
 634                         incoming = accept (this->fd, client, &length);
 635 #ifdef IPV6
 636                         if ((!*this->host) || strchr(this->host, ':'))
 637                         {
 638                                 char buf[1024];
 639                                 recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
 640                         }
 641                         else
 642                         {
 643                                 recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 644                         }
 645 #else
 646                         recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 647 #endif
 648                         this->OnIncomingConnection(incoming, (char*)recvip.c_str());
 649
 650                         if (this->IsIOHooked)
 651                         {
 652                                 try
 653                                 {
 654                                         Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port);
 655                                 }
 656                                 catch (CoreException& modexcept)
 657                                 {
 658                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 659                                 }
 660                         }
 661
 662                         this->SetQueues(incoming);
 663
 664                         delete[] client;
 665                         return true;
 666                 }
 667                 break;
 668                 case I_CONNECTED:
 669                         /* Process the read event */
 670                         return this->OnDataReady();
 671                 break;
 672                 default:
 673                 break;
 674         }
 675         return true;
 676 }
 677
 678 void InspSocket::SetState(InspSocketState s)
 679 {
 680         this->state = s;
 681 }
 682
 683 InspSocketState InspSocket::GetState()
 684 {
 685         return this->state;
 686 }
 687
 688 int InspSocket::GetFd()
 689 {
 690         return this->fd;
 691 }
 692
 693 bool InspSocket::OnConnected() { return true; }
 694 void InspSocket::OnError(InspSocketError e) { return; }
 695 int InspSocket::OnDisconnect() { return 0; }
 696 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
 697 bool InspSocket::OnDataReady() { return true; }
 698 bool InspSocket::OnWriteReady() { return true; }
 699 void InspSocket::OnTimeout() { return; }
 700 void InspSocket::OnClose() { return; }
 701
 702 InspSocket::~InspSocket()
 703 {
 704         this->Close();
 705         if (Timeout)
 706         {
 707                 Instance->Timers->DelTimer(Timeout);
 708                 Timeout = NULL;
 709         }
 710 }
 711
 712 void InspSocket::HandleEvent(EventType et, int errornum)
 713 {
 714         switch (et)
 715         {
 716                 case EVENT_ERROR:
 717                         this->Instance->SE->DelFd(this);
 718                         this->Close();
 719                         delete this;
 720                         return;
 721                 break;
 722                 case EVENT_READ:
 723                         if (!this->Poll())
 724                         {
 725                                 this->Instance->SE->DelFd(this);
 726                                 this->Close();
 727                                 delete this;
 728                                 return;
 729                         }
 730                 break;
 731                 case EVENT_WRITE:
 732                         if (this->WaitingForWriteEvent)
 733                         {
 734                                 this->WaitingForWriteEvent = false;
 735                                 if (!this->OnWriteReady())
 736                                 {
 737                                         this->Instance->SE->DelFd(this);
 738                                         this->Close();
 739                                         delete this;
 740                                         return;
 741                                 }
 742                         }
 743                         if (this->state == I_CONNECTING)
 744                         {
 745                                 /* This might look wrong as if we should be actually calling
 746                                  * with EVENT_WRITE, but trust me it is correct. There are some
 747                                  * writeability-state things in the read code, because of how
 748                                  * InspSocket used to work regarding write buffering in previous
 749                                  * versions of InspIRCd. - Brain
 750                                  */
 751                                 this->HandleEvent(EVENT_READ);
 752                                 return;
 753                         }
 754                         else
 755                         {
 756                                 if (this->FlushWriteBuffer())
 757                                 {
 758                                         this->Instance->SE->DelFd(this);
 759                                         this->Close();
 760                                         delete this;
 761                                         return;
 762                                 }
 763                         }
 764                 break;
 765         }
 766 }
 767