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         bool bindfail = false;
 171         socklen_t size = sizeof(sockaddr_in);
 172 #ifdef IPV6
 173         bool v6 = false;
 174         /* Are we looking for a binding to fit an ipv6 host? */
 175         if ((ip.empty()) || (ip.find(':') != std::string::npos))
 176                 v6 = true;
 177 #endif
 178         int j = 0;
 179         while (j < Conf.Enumerate("bind") || (!ip.empty()))
 180         {
 181                 std::string IP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip;
 182                 if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers")
 183                 {
 184                         if (!ip.empty() || ((IP != "*") && (IP != "127.0.0.1") && (IP != "") && (IP != "::1")))
 185                         {
 186                                 sockaddr* s = new sockaddr[2];
 187 #ifdef IPV6
 188                                 if (v6)
 189                                 {
 190                                         in6_addr n;
 191                                         if (inet_pton(AF_INET6, IP.c_str(), &n) > 0)
 192                                         {
 193                                                 memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(n));
 194                                                 ((sockaddr_in6*)s)->sin6_family = AF_INET6;
 195                                                 size = sizeof(sockaddr_in6);
 196                                         }
 197                                         else
 198                                         {
 199                                                 delete[] s;
 200                                                 j++;
 201                                                 continue;
 202                                         }
 203                                 }
 204                                 else
 205                                 {
 206                                         in_addr n;
 207                                         if (inet_aton(IP.c_str(), &n) > 0)
 208                                         {
 209                                                 ((sockaddr_in*)s)->sin_addr = n;
 210                                                 ((sockaddr_in*)s)->sin_family = AF_INET;
 211                                         }
 212                                         else
 213                                         {
 214                                                 delete[] s;
 215                                                 j++;
 216                                                 continue;
 217                                         }
 218                                 }
 219 #else
 220                                 in_addr n;
 221                                 if (insp_aton(IP.c_str(), &n) > 0)
 222                                 {
 223                                         ((sockaddr_in*)s)->sin_addr = n;
 224                                         ((sockaddr_in*)s)->sin_family = AF_INET;
 225                                 }
 226                                 else
 227                                 {
 228                                         delete[] s;
 229                                         j++;
 230                                         continue;
 231                                 }
 232 #endif
 233
 234                                 if (bind(this->fd, s, size) < 0)
 235                                 {
 236                                         this->state = I_ERROR;
 237                                         this->OnError(I_ERR_BIND);
 238                                         this->fd = -1;
 239                                         delete[] s;
 240                                         return false;
 241                                 }
 242
 243                                 delete[] s;
 244                                 return true;
 245                         }
 246                 }
 247                 j++;
 248         }
 249         return true;
 250 }
 251
 252 bool InspSocket::DoConnect()
 253 {
 254         sockaddr* addr = new sockaddr[2];
 255         socklen_t size = sizeof(sockaddr_in);
 256 #ifdef IPV6
 257         bool v6 = false;
 258         if ((!*this->host) || strchr(this->host, ':'))
 259                 v6 = true;
 260
 261         if (v6)
 262         {
 263                 this->fd = socket(AF_INET6, SOCK_STREAM, 0);
 264                 if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)))
 265                 {
 266                         if (!this->BindAddr(this->cbindip))
 267                         {
 268                                 delete[] addr;
 269                                 return false;
 270                         }
 271                 }
 272         }
 273         else
 274         {
 275                 this->fd = socket(AF_INET, SOCK_STREAM, 0);
 276                 if (this->fd > -1)
 277                 {
 278                         if (!this->BindAddr(this->cbindip))
 279                         {
 280                                 delete[] addr;
 281                                 return false;
 282                         }
 283                 }
 284         }
 285 #else
 286         this->fd = socket(AF_INET, SOCK_STREAM, 0);
 287         if (this->fd > -1)
 288         {
 289                 if (!this->BindAddr(this->cbindip))
 290                 {
 291                         delete[] addr;
 292                         return false;
 293                 }
 294         }
 295 #endif
 296
 297         if (this->fd == -1)
 298         {
 299                 this->state = I_ERROR;
 300                 this->OnError(I_ERR_SOCKET);
 301                 delete[] addr;
 302                 return false;
 303         }
 304
 305 #ifdef IPV6
 306         if (v6)
 307         {
 308                 in6_addr addy;
 309                 if (inet_pton(AF_INET6, this->host, &addy) > 0)
 310                 {
 311                         ((sockaddr_in6*)addr)->sin6_family = AF_INET6;
 312                         memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy));
 313                         ((sockaddr_in6*)addr)->sin6_port = htons(this->port);
 314                         size = sizeof(sockaddr_in6);
 315                 }
 316         }
 317         else
 318         {
 319                 in_addr addy;
 320                 if (inet_aton(this->host, &addy) > 0)
 321                 {
 322                         ((sockaddr_in*)addr)->sin_family = AF_INET;
 323                         ((sockaddr_in*)addr)->sin_addr = addy;
 324                         ((sockaddr_in*)addr)->sin_port = htons(this->port);
 325                 }
 326         }
 327 #else
 328         in_addr addy;
 329         if (inet_aton(this->host, &addy) > 0)
 330         {
 331                 ((sockaddr_in*)addr)->sin_family = AF_INET;
 332                 ((sockaddr_in*)addr)->sin_addr = addy;
 333                 ((sockaddr_in*)addr)->sin_port = htons(this->port);
 334         }
 335 #endif
 336
 337         int flags = fcntl(this->fd, F_GETFL, 0);
 338         fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
 339
 340         if (connect(this->fd, (sockaddr*)addr, size) == -1)
 341         {
 342                 if (errno != EINPROGRESS)
 343                 {
 344                         this->OnError(I_ERR_CONNECT);
 345                         this->Close();
 346                         this->state = I_ERROR;
 347                         return false;
 348                 }
 349
 350                 this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());
 351                 this->Instance->Timers->AddTimer(this->Timeout);
 352         }
 353         this->state = I_CONNECTING;
 354         if (this->fd > -1)
 355         {
 356                 if (!this->Instance->SE->AddFd(this))
 357                 {
 358                         this->OnError(I_ERR_NOMOREFDS);
 359                         this->Close();
 360                         this->state = I_ERROR;
 361                         return false;
 362                 }
 363                 this->SetQueues(this->fd);
 364         }
 365         return true;
 366 }
 367
 368
 369 void InspSocket::Close()
 370 {
 371         /* Save this, so we dont lose it,
 372          * otherise on failure, error messages
 373          * might be inaccurate.
 374          */
 375         int save = errno;
 376         if (this->fd > -1)
 377         {
 378                 if (this->IsIOHooked && Instance->Config->GetIOHook(this))
 379                 {
 380                         try
 381                         {
 382                                 Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);
 383                         }
 384                         catch (CoreException& modexcept)
 385                         {
 386                                 Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 387                         }
 388                 }
 389                 this->OnClose();
 390                 shutdown(this->fd,2);
 391                 close(this->fd);
 392         }
 393         errno = save;
 394 }
 395
 396 std::string InspSocket::GetIP()
 397 {
 398         return this->IP;
 399 }
 400
 401 char* InspSocket::Read()
 402 {
 403         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 404                 return NULL;
 405
 406         int n = 0;
 407
 408         if (this->IsIOHooked)
 409         {
 410                 int result2 = 0;
 411                 int MOD_RESULT = 0;
 412                 try
 413                 {
 414                         MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);
 415                 }
 416                 catch (CoreException& modexcept)
 417                 {
 418                         Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 419                 }
 420                 if (MOD_RESULT < 0)
 421                 {
 422                         n = -1;
 423                         errno = EAGAIN;
 424                 }
 425                 else
 426                 {
 427                         n = result2;
 428                 }
 429         }
 430         else
 431         {
 432                 n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
 433         }
 434
 435         if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
 436         {
 437                 ibuf[n] = 0;
 438                 return ibuf;
 439         }
 440         else
 441         {
 442                 int err = errno;
 443                 if (err == EAGAIN)
 444                         return "";
 445                 else
 446                         return NULL;
 447         }
 448 }
 449
 450 void InspSocket::MarkAsClosed()
 451 {
 452 }
 453
 454 // There are two possible outcomes to this function.
 455 // It will either write all of the data, or an undefined amount.
 456 // If an undefined amount is written the connection has failed
 457 // and should be aborted.
 458 int InspSocket::Write(const std::string &data)
 459 {
 460         /* Try and append the data to the back of the queue, and send it on its way
 461          */
 462         outbuffer.push_back(data);
 463         this->Instance->SE->WantWrite(this);
 464         return (!this->FlushWriteBuffer());
 465 }
 466
 467 bool InspSocket::FlushWriteBuffer()
 468 {
 469         errno = 0;
 470         if ((this->fd > -1) && (this->state == I_CONNECTED))
 471         {
 472                 if (this->IsIOHooked)
 473                 {
 474                         while (outbuffer.size() && (errno != EAGAIN))
 475                         {
 476                                 try
 477                                 {
 478                                         int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());
 479                                         if (result > 0)
 480                                         {
 481                                                 if ((unsigned int)result >= outbuffer[0].length())
 482                                                 {
 483                                                         outbuffer.pop_front();
 484                                                 }
 485                                                 else
 486                                                 {
 487                                                         std::string temp = outbuffer[0].substr(result);
 488                                                         outbuffer[0] = temp;
 489                                                         errno = EAGAIN;
 490                                                 }
 491                                         }
 492                                         else if (((result == -1) && (errno != EAGAIN)) || (result == 0))
 493                                         {
 494                                                 this->OnError(I_ERR_WRITE);
 495                                                 this->state = I_ERROR;
 496                                                 this->Instance->SE->DelFd(this);
 497                                                 this->Close();
 498                                                 return true;
 499                                         }
 500                                 }
 501                                 catch (CoreException& modexcept)
 502                                 {
 503                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 504                                         return true;
 505                                 }
 506                         }
 507                 }
 508                 else
 509                 {
 510                         /* If we have multiple lines, try to send them all,
 511                          * not just the first one -- Brain
 512                          */
 513                         while (outbuffer.size() && (errno != EAGAIN))
 514                         {
 515                                 /* Send a line */
 516                                 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
 517                                 if (result > 0)
 518                                 {
 519                                         if ((unsigned int)result >= outbuffer[0].length())
 520                                         {
 521                                                 /* The whole block was written (usually a line)
 522                                                  * Pop the block off the front of the queue,
 523                                                  * dont set errno, because we are clear of errors
 524                                                  * and want to try and write the next block too.
 525                                                  */
 526                                                 outbuffer.pop_front();
 527                                         }
 528                                         else
 529                                         {
 530                                                 std::string temp = outbuffer[0].substr(result);
 531                                                 outbuffer[0] = temp;
 532                                                 /* We didnt get the whole line out. arses.
 533                                                  * Try again next time, i guess. Set errno,
 534                                                  * because we shouldnt be writing any more now,
 535                                                  * until the socketengine says its safe to do so.
 536                                                  */
 537                                                 errno = EAGAIN;
 538                                         }
 539                                 }
 540                                 else if ((result == -1) && (errno != EAGAIN))
 541                                 {
 542                                         this->OnError(I_ERR_WRITE);
 543                                         this->state = I_ERROR;
 544                                         this->Instance->SE->DelFd(this);
 545                                         this->Close();
 546                                         return true;
 547                                 }
 548                         }
 549                 }
 550         }
 551
 552         if ((errno == EAGAIN) && (fd > -1))
 553         {
 554                 this->Instance->SE->WantWrite(this);
 555         }
 556
 557         return (fd < 0);
 558 }
 559
 560 void SocketTimeout::Tick(time_t now)
 561 {
 562         if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
 563                 return;
 564
 565         if (this->sock->state == I_CONNECTING)
 566         {
 567                 // for non-listening sockets, the timeout can occur
 568                 // which causes termination of the connection after
 569                 // the given number of seconds without a successful
 570                 // connection.
 571                 this->sock->OnTimeout();
 572                 this->sock->OnError(I_ERR_TIMEOUT);
 573                 this->sock->timeout = true;
 574                 ServerInstance->SE->DelFd(this->sock);
 575                 /* NOTE: We must set this AFTER DelFd, as we added
 576                  * this socket whilst writeable. This means that we
 577                  * must DELETE the socket whilst writeable too!
 578                  */
 579                 this->sock->state = I_ERROR;
 580                 this->sock->Close();
 581                 delete this->sock;
 582                 return;
 583         }
 584         else
 585         {
 586                 this->sock->Timeout = NULL;
 587         }
 588 }
 589
 590 bool InspSocket::Poll()
 591 {
 592         if (this->Instance->SE->GetRef(this->fd) != this)
 593                 return false;
 594
 595         int incoming = -1;
 596
 597         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 598                 return false;
 599
 600         switch (this->state)
 601         {
 602                 case I_CONNECTING:
 603                         /* Our socket was in write-state, so delete it and re-add it
 604                          * in read-state.
 605                          */
 606                         if (this->fd > -1)
 607                         {
 608                                 this->Instance->SE->DelFd(this);
 609                                 this->SetState(I_CONNECTED);
 610                                 if (!this->Instance->SE->AddFd(this))
 611                                         return false;
 612                         }
 613                         if (Instance->Config->GetIOHook(this))
 614                         {
 615                                 try
 616                                 {
 617                                         Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);
 618                                 }
 619                                 catch (CoreException& modexcept)
 620                                 {
 621                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 622                                 }
 623                         }
 624                         return this->OnConnected();
 625                 break;
 626                 case I_LISTENING:
 627                 {
 628                         sockaddr* client = new sockaddr[2];
 629                         length = sizeof (sockaddr_in);
 630                         std::string recvip;
 631 #ifdef IPV6
 632                         if ((!*this->host) || strchr(this->host, ':'))
 633                                 length = sizeof(sockaddr_in6);
 634 #endif
 635                         incoming = accept (this->fd, client, &length);
 636 #ifdef IPV6
 637                         if ((!*this->host) || strchr(this->host, ':'))
 638                         {
 639                                 char buf[1024];
 640                                 recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
 641                         }
 642                         else
 643                         {
 644                                 recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 645                         }
 646 #else
 647                         recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 648 #endif
 649                         this->OnIncomingConnection(incoming, (char*)recvip.c_str());
 650
 651                         if (this->IsIOHooked)
 652                         {
 653                                 try
 654                                 {
 655                                         Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port);
 656                                 }
 657                                 catch (CoreException& modexcept)
 658                                 {
 659                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 660                                 }
 661                         }
 662
 663                         this->SetQueues(incoming);
 664
 665                         delete[] client;
 666                         return true;
 667                 }
 668                 break;
 669                 case I_CONNECTED:
 670                         /* Process the read event */
 671                         return this->OnDataReady();
 672                 break;
 673                 default:
 674                 break;
 675         }
 676         return true;
 677 }
 678
 679 void InspSocket::SetState(InspSocketState s)
 680 {
 681         this->state = s;
 682 }
 683
 684 InspSocketState InspSocket::GetState()
 685 {
 686         return this->state;
 687 }
 688
 689 int InspSocket::GetFd()
 690 {
 691         return this->fd;
 692 }
 693
 694 bool InspSocket::OnConnected() { return true; }
 695 void InspSocket::OnError(InspSocketError e) { return; }
 696 int InspSocket::OnDisconnect() { return 0; }
 697 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
 698 bool InspSocket::OnDataReady() { return true; }
 699 bool InspSocket::OnWriteReady() { return true; }
 700 void InspSocket::OnTimeout() { return; }
 701 void InspSocket::OnClose() { return; }
 702
 703 InspSocket::~InspSocket()
 704 {
 705         this->Close();
 706         if (Timeout)
 707         {
 708                 Instance->Timers->DelTimer(Timeout);
 709                 Timeout = NULL;
 710         }
 711 }
 712
 713 void InspSocket::HandleEvent(EventType et, int errornum)
 714 {
 715         switch (et)
 716         {
 717                 case EVENT_ERROR:
 718                         this->Instance->SE->DelFd(this);
 719                         this->Close();
 720                         delete this;
 721                         return;
 722                 break;
 723                 case EVENT_READ:
 724                         if (!this->Poll())
 725                         {
 726                                 this->Instance->SE->DelFd(this);
 727                                 this->Close();
 728                                 delete this;
 729                                 return;
 730                         }
 731                 break;
 732                 case EVENT_WRITE:
 733                         if (this->WaitingForWriteEvent)
 734                         {
 735                                 this->WaitingForWriteEvent = false;
 736                                 if (!this->OnWriteReady())
 737                                 {
 738                                         this->Instance->SE->DelFd(this);
 739                                         this->Close();
 740                                         delete this;
 741                                         return;
 742                                 }
 743                         }
 744                         if (this->state == I_CONNECTING)
 745                         {
 746                                 /* This might look wrong as if we should be actually calling
 747                                  * with EVENT_WRITE, but trust me it is correct. There are some
 748                                  * writeability-state things in the read code, because of how
 749                                  * InspSocket used to work regarding write buffering in previous
 750                                  * versions of InspIRCd. - Brain
 751                                  */
 752                                 this->HandleEvent(EVENT_READ);
 753                                 return;
 754                         }
 755                         else
 756                         {
 757                                 if (this->FlushWriteBuffer())
 758                                 {
 759                                         this->Instance->SE->DelFd(this);
 760                                         this->Close();
 761                                         delete this;
 762                                         return;
 763                                 }
 764                         }
 765                 break;
 766         }
 767 }
 768