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