src/mac/carbon/cfsocket.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:       socket.cpp
   3 // Purpose:    Socket handler classes
   4 // Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia
   5 // Created:    April 1997
   6 // Copyright:  (C) 1999-1997, Guilhem Lavaux
   7 //             (C) 2000-1999, Guillermo Rodriguez Garcia
   8 // RCS_ID:     $Id$
   9 // License:    see wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ==========================================================================
  13 // Declarations
  14 // ==========================================================================
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17 #pragma implementation "socket.h"
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24 #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_SOCKETS
  28
  29 #include "wx/app.h"
  30 #include "wx/apptrait.h"
  31 #include "wx/defs.h"
  32 #include "wx/object.h"
  33 #include "wx/string.h"
  34 #include "wx/timer.h"
  35 #include "wx/utils.h"
  36 #include "wx/module.h"
  37 #include "wx/log.h"
  38 #include "wx/intl.h"
  39 #include "wx/event.h"
  40
  41 #include "wx/sckaddr.h"
  42 #include "wx/socket.h"
  43 #include "wx/mac/carbon/private.h"
  44
  45 #include <sys/socket.h>
  46 #include <netinet/in.h>
  47 #include <arpa/inet.h>
  48 #include <netdb.h>
  49
  50 #define HAVE_INET_ATON
  51
  52 // DLL options compatibility check:
  53 #include "wx/build.h"
  54 WX_CHECK_BUILD_OPTIONS("wxNet")
  55
  56 // --------------------------------------------------------------------------
  57 // macros and constants
  58 // --------------------------------------------------------------------------
  59
  60 // discard buffer
  61 #define MAX_DISCARD_SIZE (10 * 1024)
  62
  63 #ifndef INVALID_SOCKET
  64 #define INVALID_SOCKET -1
  65 #endif
  66
  67 // what to do within waits: we have 2 cases: from the main thread itself we
  68 // have to call wxYield() to let the events (including the GUI events and the
  69 // low-level (not wxWidgets) events from GSocket) be processed. From another
  70 // thread it is enough to just call wxThread::Yield() which will give away the
  71 // rest of our time slice: the explanation is that the events will be processed
  72 // by the main thread anyhow, without calling wxYield(), but we don't want to
  73 // eat the CPU time uselessly while sitting in the loop waiting for the data
  74 #if wxUSE_THREADS
  75     #define PROCESS_EVENTS()        \
  76     {                               \
  77         if ( wxThread::IsMain() )   \
  78             wxYield();              \
  79         else                        \
  80             wxThread::Yield();      \
  81     }
  82 #else // !wxUSE_THREADS
  83     #define PROCESS_EVENTS() wxYield()
  84 #endif // wxUSE_THREADS/!wxUSE_THREADS
  85
  86 #define wxTRACE_Socket _T("wxSocket")
  87
  88 // --------------------------------------------------------------------------
  89 // wxWin macros
  90 // --------------------------------------------------------------------------
  91
  92 IMPLEMENT_CLASS(wxSocketBase, wxObject)
  93 IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
  94 IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
  95 IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
  96 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
  97
  98 // --------------------------------------------------------------------------
  99 // private classes
 100 // --------------------------------------------------------------------------
 101
 102 class wxSocketState : public wxObject
 103 {
 104 public:
 105   wxSocketFlags            m_flags;
 106   wxSocketEventFlags       m_eventmask;
 107   bool                     m_notify;
 108   void                    *m_clientData;
 109
 110 public:
 111   wxSocketState() : wxObject() {}
 112
 113     DECLARE_NO_COPY_CLASS(wxSocketState)
 114 };
 115
 116 struct _GSocket
 117 {
 118   CFSocketNativeHandle m_fd;
 119   GAddress *m_local;
 120   GAddress *m_peer;
 121   GSocketError m_error;
 122
 123   int m_non_blocking;
 124   int m_server;
 125   int m_stream;
 126   int m_oriented;
 127   int m_establishing;
 128   unsigned long m_timeout;
 129
 130
 131   /* Callbacks */
 132   GSocketEventFlags m_detected;
 133   GSocketCallback m_cbacks[GSOCK_MAX_EVENT];
 134   char *m_data[GSOCK_MAX_EVENT];
 135
 136   CFSocketRef           m_cfSocket;
 137   CFRunLoopSourceRef    m_runLoopSource;
 138   CFReadStreamRef       m_readStream ;
 139   CFWriteStreamRef      m_writeStream ;
 140 } ;
 141
 142 struct _GAddress
 143 {
 144   struct sockaddr *m_addr;
 145   size_t m_len;
 146
 147   GAddressType m_family;
 148   int m_realfamily;
 149
 150   GSocketError m_error;
 151   int somethingElse ;
 152 };
 153
 154 void wxMacCFSocketCallback(CFSocketRef s, CFSocketCallBackType callbackType,
 155                          CFDataRef address, const void* data, void* info) ;
 156 void _GSocket_Enable(GSocket *socket, GSocketEvent event) ;
 157 void _GSocket_Disable(GSocket *socket, GSocketEvent event) ;
 158
 159 // ==========================================================================
 160 // wxSocketBase
 161 // ==========================================================================
 162
 163 // --------------------------------------------------------------------------
 164 // Initialization and shutdown
 165 // --------------------------------------------------------------------------
 166
 167 // FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses
 168 //           to m_countInit with a crit section
 169 size_t wxSocketBase::m_countInit = 0;
 170
 171 bool wxSocketBase::IsInitialized()
 172 {
 173     return m_countInit > 0;
 174 }
 175
 176 bool wxSocketBase::Initialize()
 177 {
 178     if ( !m_countInit++ )
 179     {
 180 #if 0
 181         wxAppTraits *traits = wxAppConsole::GetInstance() ?
 182                               wxAppConsole::GetInstance()->GetTraits() : NULL;
 183         GSocketGUIFunctionsTable *functions =
 184             traits ? traits->GetSocketGUIFunctionsTable() : NULL;
 185         GSocket_SetGUIFunctions(functions);
 186
 187         if ( !GSocket_Init() )
 188         {
 189             m_countInit--;
 190
 191             return FALSE;
 192         }
 193 #endif
 194     }
 195
 196     return TRUE;
 197 }
 198
 199 void wxSocketBase::Shutdown()
 200 {
 201     // we should be initialized
 202     wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") );
 203     if ( !--m_countInit )
 204     {
 205 #if 0
 206         GSocket_Cleanup();
 207 #endif
 208     }
 209 }
 210
 211 // --------------------------------------------------------------------------
 212 // Ctor and dtor
 213 // --------------------------------------------------------------------------
 214
 215 void wxSocketBase::Init()
 216 {
 217   m_socket       = NULL;
 218   m_type         = wxSOCKET_UNINIT;
 219
 220   // state
 221   m_flags        = 0;
 222   m_connected    =
 223   m_establishing =
 224   m_reading      =
 225   m_writing      =
 226   m_error        = FALSE;
 227   m_lcount       = 0;
 228   m_timeout      = 600;
 229   m_beingDeleted = FALSE;
 230
 231   // pushback buffer
 232   m_unread       = NULL;
 233   m_unrd_size    = 0;
 234   m_unrd_cur     = 0;
 235
 236   // events
 237   m_id           = -1;
 238   m_handler      = NULL;
 239   m_clientData   = NULL;
 240   m_notify       = FALSE;
 241   m_eventmask    = 0;
 242
 243   if ( !IsInitialized() )
 244   {
 245       // this Initialize() will be undone by wxSocketModule::OnExit(), all the
 246       // other calls to it should be matched by a call to Shutdown()
 247       Initialize();
 248   }
 249 }
 250
 251 wxSocketBase::wxSocketBase()
 252 {
 253   Init();
 254 }
 255
 256 wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
 257 {
 258   Init();
 259
 260   m_flags = flags;
 261   m_type  = type;
 262 }
 263
 264 wxSocketBase::~wxSocketBase()
 265 {
 266   // Just in case the app called Destroy() *and* then deleted
 267   // the socket immediately: don't leave dangling pointers.
 268   wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 269   if ( traits )
 270       traits->RemoveFromPendingDelete(this);
 271
 272   // Shutdown and close the socket
 273   if (!m_beingDeleted)
 274     Close();
 275
 276   // Destroy the GSocket object
 277   if (m_socket)
 278   {
 279     GSocket_destroy(m_socket);
 280   }
 281
 282   // Free the pushback buffer
 283   if (m_unread)
 284     free(m_unread);
 285 }
 286
 287 bool wxSocketBase::Destroy()
 288 {
 289   // Delayed destruction: the socket will be deleted during the next
 290   // idle loop iteration. This ensures that all pending events have
 291   // been processed.
 292   m_beingDeleted = TRUE;
 293
 294   // Shutdown and close the socket
 295   Close();
 296
 297   // Supress events from now on
 298   Notify(FALSE);
 299
 300   // schedule this object for deletion
 301   wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 302   if ( traits )
 303   {
 304       // let the traits object decide what to do with us
 305       traits->ScheduleForDestroy(this);
 306   }
 307   else // no app or no traits
 308   {
 309       // in wxBase we might have no app object at all, don't leak memory
 310       delete this;
 311   }
 312
 313   return TRUE;
 314 }
 315
 316 // --------------------------------------------------------------------------
 317 // Basic IO calls
 318 // --------------------------------------------------------------------------
 319
 320 // The following IO operations update m_error and m_lcount:
 321 // {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard}
 322 //
 323 // TODO: Should Connect, Accept and AcceptWith update m_error?
 324
 325 bool wxSocketBase::Close()
 326 {
 327   // Interrupt pending waits
 328   InterruptWait();
 329
 330   if (m_socket)
 331   {
 332     GSocket_Shutdown(m_socket);
 333   }
 334
 335   m_connected = FALSE;
 336   m_establishing = FALSE;
 337   return TRUE;
 338 }
 339
 340 wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes)
 341 {
 342   // Mask read events
 343   m_reading = TRUE;
 344
 345   m_lcount = _Read(buffer, nbytes);
 346
 347   // If in wxSOCKET_WAITALL mode, all bytes should have been read.
 348   if (m_flags & wxSOCKET_WAITALL)
 349     m_error = (m_lcount != nbytes);
 350   else
 351     m_error = (m_lcount == 0);
 352
 353   // Allow read events from now on
 354   m_reading = FALSE;
 355
 356   return *this;
 357 }
 358
 359 wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes)
 360 {
 361   int total = 0;
 362
 363   // Try the pushback buffer first
 364   total = GetPushback(buffer, nbytes, FALSE);
 365   nbytes -= total;
 366   buffer  = (char *)buffer + total;
 367
 368   // Return now in one of the following cases:
 369   // - the socket is invalid,
 370   // - we got all the data,
 371   // - we got *some* data and we are not using wxSOCKET_WAITALL.
 372   if ( !m_socket ||
 373        !nbytes ||
 374        ((total != 0) && !(m_flags & wxSOCKET_WAITALL)) )
 375     return total;
 376
 377   // Possible combinations (they are checked in this order)
 378   // wxSOCKET_NOWAIT
 379   // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
 380   // wxSOCKET_BLOCK
 381   // wxSOCKET_NONE
 382   //
 383
 384   int ret;
 385   if (m_flags & wxSOCKET_NOWAIT)
 386   {
 387     GSocket_SetNonBlocking(m_socket, 1);
 388     ret = GSocket_Read(m_socket, (char *)buffer, nbytes);
 389     GSocket_SetNonBlocking(m_socket, 0);
 390
 391     if (ret > 0)
 392       total += ret;
 393   }
 394   else
 395   {
 396     bool more = TRUE;
 397
 398     while (more)
 399     {
 400       if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() )
 401         break;
 402
 403       ret = GSocket_Read(m_socket, (char *)buffer, nbytes);
 404
 405       if (ret > 0)
 406       {
 407         total  += ret;
 408         nbytes -= ret;
 409         buffer  = (char *)buffer + ret;
 410       }
 411
 412       // If we got here and wxSOCKET_WAITALL is not set, we can leave
 413       // now. Otherwise, wait until we recv all the data or until there
 414       // is an error.
 415       //
 416       more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));
 417     }
 418   }
 419
 420   return total;
 421 }
 422
 423 wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes)
 424 {
 425   wxUint32 len, len2, sig, total;
 426   bool error;
 427   int old_flags;
 428   struct
 429   {
 430     unsigned char sig[4];
 431     unsigned char len[4];
 432   } msg;
 433
 434   // Mask read events
 435   m_reading = TRUE;
 436
 437   total = 0;
 438   error = TRUE;
 439   old_flags = m_flags;
 440   SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
 441
 442   if (_Read(&msg, sizeof(msg)) != sizeof(msg))
 443     goto exit;
 444
 445   sig = (wxUint32)msg.sig[0];
 446   sig |= (wxUint32)(msg.sig[1] << 8);
 447   sig |= (wxUint32)(msg.sig[2] << 16);
 448   sig |= (wxUint32)(msg.sig[3] << 24);
 449
 450   if (sig != 0xfeeddead)
 451   {
 452     wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
 453     goto exit;
 454   }
 455
 456   len = (wxUint32)msg.len[0];
 457   len |= (wxUint32)(msg.len[1] << 8);
 458   len |= (wxUint32)(msg.len[2] << 16);
 459   len |= (wxUint32)(msg.len[3] << 24);
 460
 461   if (len > nbytes)
 462   {
 463     len2 = len - nbytes;
 464     len = nbytes;
 465   }
 466   else
 467     len2 = 0;
 468
 469   // Don't attemp to read if the msg was zero bytes long.
 470   if (len)
 471   {
 472     total = _Read(buffer, len);
 473
 474     if (total != len)
 475       goto exit;
 476   }
 477   if (len2)
 478   {
 479     char *discard_buffer = new char[MAX_DISCARD_SIZE];
 480     long discard_len;
 481
 482     // NOTE: discarded bytes don't add to m_lcount.
 483     do
 484     {
 485       discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);
 486       discard_len = _Read(discard_buffer, (wxUint32)discard_len);
 487       len2 -= (wxUint32)discard_len;
 488     }
 489     while ((discard_len > 0) && len2);
 490
 491     delete [] discard_buffer;
 492
 493     if (len2 != 0)
 494       goto exit;
 495   }
 496   if (_Read(&msg, sizeof(msg)) != sizeof(msg))
 497     goto exit;
 498
 499   sig = (wxUint32)msg.sig[0];
 500   sig |= (wxUint32)(msg.sig[1] << 8);
 501   sig |= (wxUint32)(msg.sig[2] << 16);
 502   sig |= (wxUint32)(msg.sig[3] << 24);
 503
 504   if (sig != 0xdeadfeed)
 505   {
 506     wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
 507     goto exit;
 508   }
 509
 510   // everything was OK
 511   error = FALSE;
 512
 513 exit:
 514   m_error = error;
 515   m_lcount = total;
 516   m_reading = FALSE;
 517   SetFlags(old_flags);
 518
 519   return *this;
 520 }
 521
 522 wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)
 523 {
 524   // Mask read events
 525   m_reading = TRUE;
 526
 527   m_lcount = _Read(buffer, nbytes);
 528   Pushback(buffer, m_lcount);
 529
 530   // If in wxSOCKET_WAITALL mode, all bytes should have been read.
 531   if (m_flags & wxSOCKET_WAITALL)
 532     m_error = (m_lcount != nbytes);
 533   else
 534     m_error = (m_lcount == 0);
 535
 536   // Allow read events again
 537   m_reading = FALSE;
 538
 539   return *this;
 540 }
 541
 542 wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)
 543 {
 544   // Mask write events
 545   m_writing = TRUE;
 546
 547   m_lcount = _Write(buffer, nbytes);
 548
 549   // If in wxSOCKET_WAITALL mode, all bytes should have been written.
 550   if (m_flags & wxSOCKET_WAITALL)
 551     m_error = (m_lcount != nbytes);
 552   else
 553     m_error = (m_lcount == 0);
 554
 555   // Allow write events again
 556   m_writing = FALSE;
 557
 558   return *this;
 559 }
 560
 561 wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes)
 562 {
 563   wxUint32 total = 0;
 564
 565   // If the socket is invalid or parameters are ill, return immediately
 566   if (!m_socket || !buffer || !nbytes)
 567     return 0;
 568
 569   // Possible combinations (they are checked in this order)
 570   // wxSOCKET_NOWAIT
 571   // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
 572   // wxSOCKET_BLOCK
 573   // wxSOCKET_NONE
 574   //
 575   int ret;
 576   if (m_flags & wxSOCKET_NOWAIT)
 577   {
 578     GSocket_SetNonBlocking(m_socket, 1);
 579     ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);
 580     GSocket_SetNonBlocking(m_socket, 0);
 581
 582     if (ret > 0)
 583       total = ret;
 584   }
 585   else
 586   {
 587     bool more = TRUE;
 588
 589     while (more)
 590     {
 591       if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
 592         break;
 593
 594       ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);
 595
 596       if (ret > 0)
 597       {
 598         total  += ret;
 599         nbytes -= ret;
 600         buffer  = (const char *)buffer + ret;
 601       }
 602
 603       // If we got here and wxSOCKET_WAITALL is not set, we can leave
 604       // now. Otherwise, wait until we send all the data or until there
 605       // is an error.
 606       //
 607       more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));
 608     }
 609   }
 610
 611   return total;
 612 }
 613
 614 wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes)
 615 {
 616   wxUint32 total;
 617   bool error;
 618   struct
 619   {
 620     unsigned char sig[4];
 621     unsigned char len[4];
 622   } msg;
 623
 624   // Mask write events
 625   m_writing = TRUE;
 626
 627   error = TRUE;
 628   total = 0;
 629   SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
 630
 631   msg.sig[0] = (unsigned char) 0xad;
 632   msg.sig[1] = (unsigned char) 0xde;
 633   msg.sig[2] = (unsigned char) 0xed;
 634   msg.sig[3] = (unsigned char) 0xfe;
 635
 636   msg.len[0] = (unsigned char) (nbytes & 0xff);
 637   msg.len[1] = (unsigned char) ((nbytes >> 8) & 0xff);
 638   msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff);
 639   msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff);
 640
 641   if (_Write(&msg, sizeof(msg)) < sizeof(msg))
 642     goto exit;
 643
 644   total = _Write(buffer, nbytes);
 645
 646   if (total < nbytes)
 647     goto exit;
 648
 649   msg.sig[0] = (unsigned char) 0xed;
 650   msg.sig[1] = (unsigned char) 0xfe;
 651   msg.sig[2] = (unsigned char) 0xad;
 652   msg.sig[3] = (unsigned char) 0xde;
 653   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
 654
 655   if ((_Write(&msg, sizeof(msg))) < sizeof(msg))
 656     goto exit;
 657
 658   // everything was OK
 659   error = FALSE;
 660
 661 exit:
 662   m_error = error;
 663   m_lcount = total;
 664   m_writing = FALSE;
 665
 666   return *this;
 667 }
 668
 669 wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes)
 670 {
 671   if (nbytes != 0)
 672     Pushback(buffer, nbytes);
 673
 674   m_error = FALSE;
 675   m_lcount = nbytes;
 676
 677   return *this;
 678 }
 679
 680 wxSocketBase& wxSocketBase::Discard()
 681 {
 682   char *buffer = new char[MAX_DISCARD_SIZE];
 683   wxUint32 ret;
 684   wxUint32 total = 0;
 685
 686   // Mask read events
 687   m_reading = TRUE;
 688
 689   SetFlags(wxSOCKET_NOWAIT);
 690
 691   do
 692   {
 693     ret = _Read(buffer, MAX_DISCARD_SIZE);
 694     total += ret;
 695   }
 696   while (ret == MAX_DISCARD_SIZE);
 697
 698   delete[] buffer;
 699   m_lcount = total;
 700   m_error  = FALSE;
 701
 702   // Allow read events again
 703   m_reading = FALSE;
 704
 705   return *this;
 706 }
 707
 708 // --------------------------------------------------------------------------
 709 // Wait functions
 710 // --------------------------------------------------------------------------
 711
 712 // All Wait functions poll the socket using GSocket_Select() to
 713 // check for the specified combination of conditions, until one
 714 // of these conditions become true, an error occurs, or the
 715 // timeout elapses. The polling loop calls PROCESS_EVENTS(), so
 716 // this won't block the GUI.
 717
 718 bool wxSocketBase::_Wait(long seconds,
 719                          long milliseconds,
 720                          wxSocketEventFlags flags)
 721 {
 722
 723   GSocketEventFlags result;
 724   long timeout;
 725
 726   // Set this to TRUE to interrupt ongoing waits
 727   m_interrupt = FALSE;
 728
 729   // Check for valid socket
 730   if (!m_socket)
 731     return FALSE;
 732
 733   // Check for valid timeout value.
 734   if (seconds != -1)
 735     timeout = seconds * 1000 + milliseconds;
 736   else
 737     timeout = m_timeout * 1000;
 738
 739 #if !defined(wxUSE_GUI) || !wxUSE_GUI
 740   GSocket_SetTimeout(m_socket, timeout);
 741 #endif
 742
 743   // Wait in an active polling loop.
 744   //
 745   // NOTE: We duplicate some of the code in OnRequest, but this doesn't
 746   //   hurt. It has to be here because the (GSocket) event might arrive
 747   //   a bit delayed, and it has to be in OnRequest as well because we
 748   //   don't know whether the Wait functions are being used.
 749   //
 750   // Do this at least once (important if timeout == 0, when
 751   // we are just polling). Also, if just polling, do not yield.
 752
 753   wxStopWatch chrono;
 754   bool done = FALSE;
 755
 756   while (!done)
 757   {
 758     result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);
 759
 760     // Incoming connection (server) or connection established (client)
 761     if (result & GSOCK_CONNECTION_FLAG)
 762     {
 763       m_connected = TRUE;
 764       m_establishing = FALSE;
 765       return TRUE;
 766     }
 767
 768     // Data available or output buffer ready
 769     if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))
 770     {
 771       return TRUE;
 772     }
 773
 774     // Connection lost
 775     if (result & GSOCK_LOST_FLAG)
 776     {
 777       m_connected = FALSE;
 778       m_establishing = FALSE;
 779       return (flags & GSOCK_LOST_FLAG) != 0;
 780     }
 781
 782     // Wait more?
 783     if ((!timeout) || (chrono.Time() > timeout) || (m_interrupt))
 784       done = TRUE;
 785     else
 786       PROCESS_EVENTS();
 787   }
 788
 789   return FALSE;
 790 }
 791
 792 bool wxSocketBase::Wait(long seconds, long milliseconds)
 793 {
 794   return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
 795                                       GSOCK_OUTPUT_FLAG |
 796                                       GSOCK_CONNECTION_FLAG |
 797                                       GSOCK_LOST_FLAG);
 798 }
 799
 800 bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
 801 {
 802   // Check pushback buffer before entering _Wait
 803   if (m_unread)
 804     return TRUE;
 805
 806   // Note that GSOCK_INPUT_LOST has to be explicitly passed to
 807   // _Wait becuase of the semantics of WaitForRead: a return
 808   // value of TRUE means that a GSocket_Read call will return
 809   // immediately, not that there is actually data to read.
 810
 811   return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
 812                                       GSOCK_LOST_FLAG);
 813 }
 814
 815 bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
 816 {
 817   return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG);
 818 }
 819
 820 bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
 821 {
 822   return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
 823 }
 824
 825 // --------------------------------------------------------------------------
 826 // Miscellaneous
 827 // --------------------------------------------------------------------------
 828
 829 //
 830 // Get local or peer address
 831 //
 832
 833 bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
 834 {
 835   GAddress *peer;
 836
 837   if (!m_socket)
 838     return FALSE;
 839
 840   peer = GSocket_GetPeer(m_socket);
 841
 842     // copying a null address would just trigger an assert anyway
 843
 844   if (!peer)
 845     return FALSE;
 846
 847   addr_man.SetAddress(peer);
 848   GAddress_destroy(peer);
 849
 850   return TRUE;
 851 }
 852
 853 bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
 854 {
 855 #if 0
 856   GAddress *local;
 857
 858   if (!m_socket)
 859     return FALSE;
 860
 861   local = GSocket_GetLocal(m_socket);
 862   addr_man.SetAddress(local);
 863   GAddress_destroy(local);
 864 #endif
 865   return TRUE;
 866 }
 867
 868 //
 869 // Save and restore socket state
 870 //
 871
 872 void wxSocketBase::SaveState()
 873 {
 874   wxSocketState *state;
 875
 876   state = new wxSocketState();
 877
 878   state->m_flags      = m_flags;
 879   state->m_notify     = m_notify;
 880   state->m_eventmask  = m_eventmask;
 881   state->m_clientData = m_clientData;
 882
 883   m_states.Append(state);
 884 }
 885
 886 void wxSocketBase::RestoreState()
 887 {
 888   wxList::compatibility_iterator node;
 889   wxSocketState *state;
 890
 891   node = m_states.GetLast();
 892   if (!node)
 893     return;
 894
 895   state = (wxSocketState *)node->GetData();
 896
 897   m_flags      = state->m_flags;
 898   m_notify     = state->m_notify;
 899   m_eventmask  = state->m_eventmask;
 900   m_clientData = state->m_clientData;
 901
 902   m_states.Erase(node);
 903   delete state;
 904 }
 905
 906 //
 907 // Timeout and flags
 908 //
 909
 910 void wxSocketBase::SetTimeout(long seconds)
 911 {
 912   m_timeout = seconds;
 913
 914 #if 0
 915   if (m_socket)
 916     GSocket_SetTimeout(m_socket, m_timeout * 1000);
 917 #endif
 918 }
 919
 920 void wxSocketBase::SetFlags(wxSocketFlags flags)
 921 {
 922   m_flags = flags;
 923 }
 924
 925
 926 // --------------------------------------------------------------------------
 927 // Event handling
 928 // --------------------------------------------------------------------------
 929
 930 // A note on how events are processed, which is probably the most
 931 // difficult thing to get working right while keeping the same API
 932 // and functionality for all platforms.
 933 //
 934 // When GSocket detects an event, it calls wx_socket_callback, which in
 935 // turn just calls wxSocketBase::OnRequest in the corresponding wxSocket
 936 // object. OnRequest does some housekeeping, and if the event is to be
 937 // propagated to the user, it creates a new wxSocketEvent object and
 938 // posts it. The event is not processed immediately, but delayed with
 939 // AddPendingEvent instead. This is necessary in order to decouple the
 940 // event processing from wx_socket_callback; otherwise, subsequent IO
 941 // calls made from the user event handler would fail, as gtk callbacks
 942 // are not reentrant.
 943 //
 944 // Note that, unlike events, user callbacks (now deprecated) are _not_
 945 // decoupled from wx_socket_callback and thus they suffer from a variety
 946 // of problems. Avoid them where possible and use events instead.
 947
 948 extern "C"
 949 void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
 950                                     GSocketEvent notification,
 951                                     char *cdata)
 952 {
 953   wxSocketBase *sckobj = (wxSocketBase *)cdata;
 954
 955   sckobj->OnRequest((wxSocketNotify) notification);
 956 }
 957
 958 void wxSocketBase::OnRequest(wxSocketNotify notification)
 959 {
 960   // NOTE: We duplicate some of the code in _Wait, but this doesn't
 961   //   hurt. It has to be here because the (GSocket) event might arrive
 962   //   a bit delayed, and it has to be in _Wait as well because we don't
 963   //   know whether the Wait functions are being used.
 964
 965   switch(notification)
 966   {
 967     case wxSOCKET_CONNECTION:
 968       m_establishing = FALSE;
 969       m_connected = TRUE;
 970       break;
 971
 972     // If we are in the middle of a R/W operation, do not
 973     // propagate events to users. Also, filter 'late' events
 974     // which are no longer valid.
 975
 976     case wxSOCKET_INPUT:
 977       if (m_reading || !GSocket_Select(m_socket, GSOCK_INPUT_FLAG))
 978         return;
 979       break;
 980
 981     case wxSOCKET_OUTPUT:
 982       if (m_writing || !GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG))
 983         return;
 984       break;
 985
 986     case wxSOCKET_LOST:
 987       m_connected = FALSE;
 988       m_establishing = FALSE;
 989       break;
 990
 991     default:
 992       break;
 993   }
 994
 995   // Schedule the event
 996
 997   wxSocketEventFlags flag = 0;
 998   wxUnusedVar(flag);
 999   switch (notification)
1000   {
1001     case GSOCK_INPUT:      flag = GSOCK_INPUT_FLAG; break;
1002     case GSOCK_OUTPUT:     flag = GSOCK_OUTPUT_FLAG; break;
1003     case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break;
1004     case GSOCK_LOST:       flag = GSOCK_LOST_FLAG; break;
1005     default:
1006       wxLogWarning(_("wxSocket: unknown event!."));
1007       return;
1008   }
1009
1010   if (((m_eventmask & flag) == flag) && m_notify)
1011   {
1012     if (m_handler)
1013     {
1014       wxSocketEvent event(m_id);
1015       event.m_event      = notification;
1016       event.m_clientData = m_clientData;
1017       event.SetEventObject(this);
1018
1019       m_handler->AddPendingEvent(event);
1020     }
1021   }
1022 }
1023
1024 void wxSocketBase::Notify(bool notify)
1025 {
1026   m_notify = notify;
1027 }
1028
1029 void wxSocketBase::SetNotify(wxSocketEventFlags flags)
1030 {
1031   m_eventmask = flags;
1032 }
1033
1034 void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
1035 {
1036   m_handler = &handler;
1037   m_id      = id;
1038 }
1039
1040 // --------------------------------------------------------------------------
1041 // Pushback buffer
1042 // --------------------------------------------------------------------------
1043
1044 void wxSocketBase::Pushback(const void *buffer, wxUint32 size)
1045 {
1046   if (!size) return;
1047
1048   if (m_unread == NULL)
1049     m_unread = malloc(size);
1050   else
1051   {
1052     void *tmp;
1053
1054     tmp = malloc(m_unrd_size + size);
1055     memcpy((char *)tmp + size, m_unread, m_unrd_size);
1056     free(m_unread);
1057
1058     m_unread = tmp;
1059   }
1060
1061   m_unrd_size += size;
1062
1063   memcpy(m_unread, buffer, size);
1064 }
1065
1066 wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)
1067 {
1068   if (!m_unrd_size)
1069     return 0;
1070
1071   if (size > (m_unrd_size-m_unrd_cur))
1072     size = m_unrd_size-m_unrd_cur;
1073
1074   memcpy(buffer, (char *)m_unread + m_unrd_cur, size);
1075
1076   if (!peek)
1077   {
1078     m_unrd_cur += size;
1079     if (m_unrd_size == m_unrd_cur)
1080     {
1081       free(m_unread);
1082       m_unread = NULL;
1083       m_unrd_size = 0;
1084       m_unrd_cur  = 0;
1085     }
1086   }
1087
1088   return size;
1089 }
1090
1091
1092 // ==========================================================================
1093 // wxSocketServer
1094 // ==========================================================================
1095
1096 // --------------------------------------------------------------------------
1097 // Ctor
1098 // --------------------------------------------------------------------------
1099
1100 wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
1101                                wxSocketFlags flags)
1102               : wxSocketBase(flags, wxSOCKET_SERVER)
1103 {
1104     wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );
1105
1106     m_socket = GSocket_new();
1107
1108     if (!m_socket)
1109     {
1110         wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") );
1111         return;
1112     }
1113
1114         // Setup the socket as server
1115
1116 #if 0
1117     GSocket_SetLocal(m_socket, addr_man.GetAddress());
1118     if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
1119     {
1120         GSocket_destroy(m_socket);
1121         m_socket = NULL;
1122
1123         wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") );
1124         return;
1125     }
1126
1127     GSocket_SetTimeout(m_socket, m_timeout * 1000);
1128     GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
1129                                   GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
1130                                   wx_socket_callback, (char *)this);
1131 #endif
1132 }
1133
1134 // --------------------------------------------------------------------------
1135 // Accept
1136 // --------------------------------------------------------------------------
1137
1138 bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
1139 {
1140   GSocket *child_socket;
1141
1142   if (!m_socket)
1143     return FALSE;
1144
1145   // If wait == FALSE, then the call should be nonblocking.
1146   // When we are finished, we put the socket to blocking mode
1147   // again.
1148
1149 #if 0
1150   if (!wait)
1151     GSocket_SetNonBlocking(m_socket, 1);
1152
1153   child_socket = GSocket_WaitConnection(m_socket);
1154
1155   if (!wait)
1156     GSocket_SetNonBlocking(m_socket, 0);
1157
1158   if (!child_socket)
1159     return FALSE;
1160
1161   sock.m_type = wxSOCKET_BASE;
1162   sock.m_socket = child_socket;
1163   sock.m_connected = TRUE;
1164
1165   GSocket_SetTimeout(sock.m_socket, sock.m_timeout * 1000);
1166   GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
1167                                      GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
1168                                      wx_socket_callback, (char *)&sock);
1169 #endif
1170   return TRUE;
1171 }
1172
1173 wxSocketBase *wxSocketServer::Accept(bool wait)
1174 {
1175   wxSocketBase* sock = new wxSocketBase();
1176
1177   sock->SetFlags(m_flags);
1178
1179   if (!AcceptWith(*sock, wait))
1180   {
1181     sock->Destroy();
1182     sock = NULL;
1183   }
1184
1185   return sock;
1186 }
1187
1188 bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
1189 {
1190   return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
1191 }
1192
1193 // ==========================================================================
1194 // wxSocketClient
1195 // ==========================================================================
1196
1197 // --------------------------------------------------------------------------
1198 // Ctor and dtor
1199 // --------------------------------------------------------------------------
1200
1201 wxSocketClient::wxSocketClient(wxSocketFlags flags)
1202               : wxSocketBase(flags, wxSOCKET_CLIENT)
1203 {
1204 }
1205
1206 wxSocketClient::~wxSocketClient()
1207 {
1208 }
1209
1210 // --------------------------------------------------------------------------
1211 // Connect
1212 // --------------------------------------------------------------------------
1213
1214 bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
1215 {
1216   GSocketError err ;
1217
1218   if (m_socket)
1219   {
1220     // Shutdown and destroy the socket
1221     Close();
1222     GSocket_destroy(m_socket);
1223   }
1224
1225   m_socket = GSocket_new();
1226   m_connected = FALSE;
1227   m_establishing = FALSE;
1228
1229   if (!m_socket)
1230     return FALSE;
1231
1232   GSocket_SetTimeout(m_socket, m_timeout * 1000);
1233   GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
1234                                 GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
1235                                 wx_socket_callback, (char *)this);
1236
1237   // If wait == FALSE, then the call should be nonblocking.
1238   // When we are finished, we put the socket to blocking mode
1239   // again.
1240
1241   if (!wait)
1242     GSocket_SetNonBlocking(m_socket, 1);
1243
1244   GSocket_SetPeer(m_socket, addr_man.GetAddress());
1245   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
1246
1247   if (!wait)
1248     GSocket_SetNonBlocking(m_socket, 0);
1249
1250   if (err != GSOCK_NOERROR)
1251   {
1252     if (err == GSOCK_WOULDBLOCK)
1253       m_establishing = TRUE;
1254
1255     return FALSE;
1256   }
1257
1258   m_connected = TRUE;
1259   return TRUE;
1260 }
1261
1262 bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
1263 {
1264   if (m_connected)                      // Already connected
1265     return TRUE;
1266
1267   if (!m_establishing || !m_socket)     // No connection in progress
1268     return FALSE;
1269
1270   return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG |
1271                                       GSOCK_LOST_FLAG);
1272 }
1273
1274 // ==========================================================================
1275 // wxDatagramSocket
1276 // ==========================================================================
1277
1278 /* NOTE: experimental stuff - might change */
1279
1280 wxDatagramSocket::wxDatagramSocket( wxSockAddress& addr,
1281                                     wxSocketFlags flags )
1282                 : wxSocketBase( flags, wxSOCKET_DATAGRAM )
1283 {
1284 #if 0
1285   // Create the socket
1286   m_socket = GSocket_new();
1287
1288   if(!m_socket)
1289     return;
1290
1291   // Setup the socket as non connection oriented
1292   GSocket_SetLocal(m_socket, addr.GetAddress());
1293   if( GSocket_SetNonOriented(m_socket) != GSOCK_NOERROR )
1294   {
1295     GSocket_destroy(m_socket);
1296     m_socket = NULL;
1297     return;
1298   }
1299
1300   // Initialize all stuff
1301   m_connected = FALSE;
1302   m_establishing = FALSE;
1303   GSocket_SetTimeout( m_socket, m_timeout );
1304   GSocket_SetCallback( m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
1305                                  GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
1306                                  wx_socket_callback, (char*)this );
1307 #endif
1308 }
1309
1310 wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
1311                                               void* buf,
1312                                               wxUint32 nBytes )
1313 {
1314     Read(buf, nBytes);
1315     GetPeer(addr);
1316     return (*this);
1317 }
1318
1319 wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
1320                                             const void* buf,
1321                                             wxUint32 nBytes )
1322 {
1323     GSocket_SetPeer(m_socket, addr.GetAddress());
1324     Write(buf, nBytes);
1325     return (*this);
1326 }
1327
1328 /*
1329  * -------------------------------------------------------------------------
1330  * GAddress
1331  * -------------------------------------------------------------------------
1332  */
1333
1334 /* CHECK_ADDRESS verifies that the current address family is either
1335  * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
1336  * initalizes it to be a GSOCK_*family*. In other cases, it returns
1337  * an appropiate error code.
1338  *
1339  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1340  */
1341 #define CHECK_ADDRESS(address, family)                              \
1342 {                                                                   \
1343   if (address->m_family == GSOCK_NOFAMILY)                          \
1344     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1345       return address->m_error;                                      \
1346   if (address->m_family != GSOCK_##family)                          \
1347   {                                                                 \
1348     address->m_error = GSOCK_INVADDR;                               \
1349     return GSOCK_INVADDR;                                           \
1350   }                                                                 \
1351 }
1352
1353 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1354 {                                                                   \
1355   if (address->m_family == GSOCK_NOFAMILY)                          \
1356     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1357       return retval;                                                \
1358   if (address->m_family != GSOCK_##family)                          \
1359   {                                                                 \
1360     address->m_error = GSOCK_INVADDR;                               \
1361     return retval;                                                  \
1362   }                                                                 \
1363 }
1364
1365
1366 GAddress *GAddress_new(void)
1367 {
1368   GAddress *address;
1369
1370   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1371     return NULL;
1372
1373   address->m_family  = GSOCK_NOFAMILY;
1374   address->m_addr    = NULL;
1375   address->m_len     = 0;
1376
1377   return address;
1378 }
1379
1380 GAddress *GAddress_copy(GAddress *address)
1381 {
1382   GAddress *addr2;
1383
1384   assert(address != NULL);
1385
1386   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1387     return NULL;
1388
1389   memcpy(addr2, address, sizeof(GAddress));
1390
1391   if (address->m_addr && address->m_len > 0)
1392   {
1393     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1394     if (addr2->m_addr == NULL)
1395     {
1396       free(addr2);
1397       return NULL;
1398     }
1399     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1400   }
1401
1402   return addr2;
1403 }
1404
1405 void GAddress_destroy(GAddress *address)
1406 {
1407   assert(address != NULL);
1408
1409   if (address->m_addr)
1410     free(address->m_addr);
1411
1412   free(address);
1413 }
1414
1415 void GAddress_SetFamily(GAddress *address, GAddressType type)
1416 {
1417   assert(address != NULL);
1418
1419   address->m_family = type;
1420 }
1421
1422 GAddressType GAddress_GetFamily(GAddress *address)
1423 {
1424   assert(address != NULL);
1425
1426   return address->m_family;
1427 }
1428
1429 GSocketError _GAddress_translate_from(GAddress *address,
1430                                       struct sockaddr *addr, int len)
1431 {
1432   address->m_realfamily = addr->sa_family;
1433   switch (addr->sa_family)
1434   {
1435     case AF_INET:
1436       address->m_family = GSOCK_INET;
1437       break;
1438     case AF_UNIX:
1439       address->m_family = GSOCK_UNIX;
1440       break;
1441 #ifdef AF_INET6
1442     case AF_INET6:
1443       address->m_family = GSOCK_INET6;
1444       break;
1445 #endif
1446     default:
1447     {
1448       address->m_error = GSOCK_INVOP;
1449       return GSOCK_INVOP;
1450     }
1451   }
1452
1453   if (address->m_addr)
1454     free(address->m_addr);
1455
1456   address->m_len  = len;
1457   address->m_addr = (struct sockaddr *)malloc(len);
1458
1459   if (address->m_addr == NULL)
1460   {
1461     address->m_error = GSOCK_MEMERR;
1462     return GSOCK_MEMERR;
1463   }
1464   memcpy(address->m_addr, addr, len);
1465
1466   return GSOCK_NOERROR;
1467 }
1468
1469 GSocketError _GAddress_translate_to(GAddress *address,
1470                                     struct sockaddr **addr, int *len)
1471 {
1472   if (!address->m_addr)
1473   {
1474     address->m_error = GSOCK_INVADDR;
1475     return GSOCK_INVADDR;
1476   }
1477
1478   *len = address->m_len;
1479   *addr = (struct sockaddr *)malloc(address->m_len);
1480   if (*addr == NULL)
1481   {
1482     address->m_error = GSOCK_MEMERR;
1483     return GSOCK_MEMERR;
1484   }
1485
1486   memcpy(*addr, address->m_addr, address->m_len);
1487   return GSOCK_NOERROR;
1488 }
1489
1490 /*
1491  * -------------------------------------------------------------------------
1492  * Internet address family
1493  * -------------------------------------------------------------------------
1494  */
1495
1496 GSocketError _GAddress_Init_INET(GAddress *address)
1497 {
1498   address->m_len  = sizeof(struct sockaddr_in);
1499   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1500   if (address->m_addr == NULL)
1501   {
1502     address->m_error = GSOCK_MEMERR;
1503     return GSOCK_MEMERR;
1504   }
1505
1506   memset( address->m_addr , 0 , address->m_len ) ;
1507   address->m_family = GSOCK_INET;
1508   address->m_realfamily = PF_INET;
1509   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1510   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1511
1512   return GSOCK_NOERROR;
1513 }
1514
1515 GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1516 {
1517   struct hostent *he;
1518   struct in_addr *addr;
1519
1520   assert(address != NULL);
1521
1522   CHECK_ADDRESS(address, INET);
1523
1524   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1525
1526   /* If it is a numeric host name, convert it now */
1527 #if defined(HAVE_INET_ATON)
1528   if (inet_aton(hostname, addr) == 0)
1529   {
1530 #elif defined(HAVE_INET_ADDR)
1531   if ( (addr->s_addr = inet_addr(hostname)) == -1 )
1532   {
1533 #else
1534   /* Use gethostbyname by default */
1535 #ifndef __WXMAC__
1536   int val = 1;  /* VA doesn't like constants in conditional expressions */
1537   if (val)
1538 #endif
1539   {
1540 #endif
1541     struct in_addr *array_addr;
1542
1543     /* It is a real name, we solve it */
1544     if ((he = gethostbyname(hostname)) == NULL)
1545     {
1546       /* Reset to invalid address */
1547       addr->s_addr = INADDR_NONE;
1548       address->m_error = GSOCK_NOHOST;
1549       return GSOCK_NOHOST;
1550     }
1551     array_addr = (struct in_addr *) *(he->h_addr_list);
1552     addr->s_addr = array_addr[0].s_addr;
1553   }
1554   return GSOCK_NOERROR;
1555 }
1556
1557 GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1558 {
1559   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1560 }
1561
1562 GSocketError GAddress_INET_SetHostAddress(GAddress *address,
1563                                           unsigned long hostaddr)
1564 {
1565   struct in_addr *addr;
1566
1567   assert(address != NULL);
1568
1569   CHECK_ADDRESS(address, INET);
1570
1571   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1572   addr->s_addr = htonl(hostaddr) ;
1573
1574   return GSOCK_NOERROR;
1575 }
1576
1577 GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1578                                        const char *protocol)
1579 {
1580   struct servent *se;
1581   struct sockaddr_in *addr;
1582
1583   assert(address != NULL);
1584   CHECK_ADDRESS(address, INET);
1585
1586   if (!port)
1587   {
1588     address->m_error = GSOCK_INVPORT;
1589     return GSOCK_INVPORT;
1590   }
1591
1592   se = getservbyname(port, protocol);
1593   if (!se)
1594   {
1595     /* the cast to int suppresses compiler warnings about subscript having the
1596        type char */
1597     if (isdigit((int)port[0]))
1598     {
1599       int port_int;
1600
1601       port_int = atoi(port);
1602       addr = (struct sockaddr_in *)address->m_addr;
1603       addr->sin_port = htons(port_int);
1604       return GSOCK_NOERROR;
1605     }
1606
1607     address->m_error = GSOCK_INVPORT;
1608     return GSOCK_INVPORT;
1609   }
1610
1611   addr = (struct sockaddr_in *)address->m_addr;
1612   addr->sin_port = se->s_port;
1613
1614   return GSOCK_NOERROR;
1615 }
1616
1617 GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1618 {
1619   struct sockaddr_in *addr;
1620
1621   assert(address != NULL);
1622   CHECK_ADDRESS(address, INET);
1623
1624   addr = (struct sockaddr_in *)address->m_addr;
1625   addr->sin_port = htons(port);
1626
1627   return GSOCK_NOERROR;
1628 }
1629
1630 GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1631 {
1632   struct hostent *he;
1633   char *addr_buf;
1634   struct sockaddr_in *addr;
1635
1636   assert(address != NULL);
1637   CHECK_ADDRESS(address, INET);
1638
1639   addr = (struct sockaddr_in *)address->m_addr;
1640   addr_buf = (char *)&(addr->sin_addr);
1641
1642   he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
1643   if (he == NULL)
1644   {
1645     address->m_error = GSOCK_NOHOST;
1646     return GSOCK_NOHOST;
1647   }
1648
1649   strncpy(hostname, he->h_name, sbuf);
1650
1651   return GSOCK_NOERROR;
1652 }
1653
1654 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1655 {
1656   struct sockaddr_in *addr;
1657
1658   assert(address != NULL);
1659   CHECK_ADDRESS_RETVAL(address, INET, 0);
1660
1661   addr = (struct sockaddr_in *)address->m_addr;
1662
1663   return ntohl(addr->sin_addr.s_addr) ;
1664 }
1665
1666 unsigned short GAddress_INET_GetPort(GAddress *address)
1667 {
1668   struct sockaddr_in *addr;
1669
1670   assert(address != NULL);
1671   CHECK_ADDRESS_RETVAL(address, INET, 0);
1672
1673   addr = (struct sockaddr_in *)address->m_addr;
1674   return ntohs(addr->sin_port);
1675 }
1676
1677 /*
1678  * -------------------------------------------------------------------------
1679  * Unix address family
1680  * -------------------------------------------------------------------------
1681  */
1682
1683 GSocketError _GAddress_Init_UNIX(GAddress *address)
1684 {
1685   address->m_len  = sizeof(struct sockaddr_un);
1686   address->m_addr = (struct sockaddr *)malloc(address->m_len);
1687   if (address->m_addr == NULL)
1688   {
1689     address->m_error = GSOCK_MEMERR;
1690     return GSOCK_MEMERR;
1691   }
1692
1693   address->m_family = GSOCK_UNIX;
1694   address->m_realfamily = PF_UNIX;
1695   ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1696   ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1697
1698   return GSOCK_NOERROR;
1699 }
1700
1701 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
1702
1703 GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1704 {
1705   struct sockaddr_un *addr;
1706
1707   assert(address != NULL);
1708
1709   CHECK_ADDRESS(address, UNIX);
1710
1711   addr = ((struct sockaddr_un *)address->m_addr);
1712   strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
1713   addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
1714
1715   return GSOCK_NOERROR;
1716 }
1717
1718 GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1719 {
1720   struct sockaddr_un *addr;
1721
1722   assert(address != NULL);
1723   CHECK_ADDRESS(address, UNIX);
1724
1725   addr = (struct sockaddr_un *)address->m_addr;
1726
1727   strncpy(path, addr->sun_path, sbuf);
1728
1729   return GSOCK_NOERROR;
1730 }
1731
1732 /* Address handling */
1733
1734 /* GSocket_SetLocal:
1735  * GSocket_GetLocal:
1736  * GSocket_SetPeer:
1737  * GSocket_GetPeer:
1738  *  Set or get the local or peer address for this socket. The 'set'
1739  *  functions return GSOCK_NOERROR on success, an error code otherwise.
1740  *  The 'get' functions return a pointer to a GAddress object on success,
1741  *  or NULL otherwise, in which case they set the error code of the
1742  *  corresponding GSocket.
1743  *
1744  *  Error codes:
1745  *    GSOCK_INVSOCK - the socket is not valid.
1746  *    GSOCK_INVADDR - the address is not valid.
1747  */
1748
1749 GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address)
1750 {
1751   assert(socket != NULL);
1752
1753   /* the socket must be initialized, or it must be a server */
1754   if ((socket->m_fd != INVALID_SOCKET && !socket->m_server))
1755   {
1756     socket->m_error = GSOCK_INVSOCK;
1757     return GSOCK_INVSOCK;
1758   }
1759
1760   /* check address */
1761   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
1762   {
1763     socket->m_error = GSOCK_INVADDR;
1764     return GSOCK_INVADDR;
1765   }
1766
1767   if (socket->m_local)
1768     GAddress_destroy(socket->m_local);
1769
1770   socket->m_local = GAddress_copy(address);
1771
1772   return GSOCK_NOERROR;
1773 }
1774
1775 GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address)
1776 {
1777   assert(socket != NULL);
1778
1779   /* check address */
1780   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
1781   {
1782     socket->m_error = GSOCK_INVADDR;
1783     return GSOCK_INVADDR;
1784   }
1785
1786   if (socket->m_peer)
1787     GAddress_destroy(socket->m_peer);
1788
1789   socket->m_peer = GAddress_copy(address);
1790
1791   return GSOCK_NOERROR;
1792 }
1793
1794 GAddress *GSocket_GetLocal(GSocket *socket)
1795 {
1796   GAddress *address;
1797   struct sockaddr addr;
1798   socklen_t size = sizeof(addr);
1799   GSocketError err;
1800
1801   assert(socket != NULL);
1802
1803   /* try to get it from the m_local var first */
1804   if (socket->m_local)
1805     return GAddress_copy(socket->m_local);
1806
1807   /* else, if the socket is initialized, try getsockname */
1808   if (socket->m_fd == INVALID_SOCKET)
1809   {
1810     socket->m_error = GSOCK_INVSOCK;
1811     return NULL;
1812   }
1813
1814   if (getsockname(socket->m_fd, &addr, (socklen_t *) &size) < 0)
1815   {
1816     socket->m_error = GSOCK_IOERR;
1817     return NULL;
1818   }
1819
1820   /* got a valid address from getsockname, create a GAddress object */
1821   address = GAddress_new();
1822   if (address == NULL)
1823   {
1824     socket->m_error = GSOCK_MEMERR;
1825     return NULL;
1826   }
1827
1828   err = _GAddress_translate_from(address, &addr, size);
1829   if (err != GSOCK_NOERROR)
1830   {
1831     GAddress_destroy(address);
1832     socket->m_error = err;
1833     return NULL;
1834   }
1835
1836   return address;
1837 }
1838
1839 GAddress *GSocket_GetPeer(GSocket *socket)
1840 {
1841   assert(socket != NULL);
1842
1843   /* try to get it from the m_peer var */
1844   if (socket->m_peer)
1845     return GAddress_copy(socket->m_peer);
1846
1847   return NULL;
1848 }
1849
1850 //
1851 //
1852 //
1853
1854
1855 GSocket *GSocket_new(void)
1856 {
1857   GSocket *socket;
1858   socket = (GSocket *)malloc(sizeof(GSocket));
1859
1860   if (socket == NULL)
1861     return NULL;
1862
1863   socket->m_fd                  = INVALID_SOCKET;
1864
1865   for (int i=0;i<GSOCK_MAX_EVENT;i++)
1866   {
1867     socket->m_cbacks[i]         = NULL;
1868   }
1869   socket->m_detected            = 0;
1870
1871   socket->m_local               = NULL;
1872   socket->m_peer                = NULL;
1873   socket->m_error               = GSOCK_NOERROR;
1874
1875   socket->m_non_blocking        = FALSE ;
1876   socket->m_stream              = TRUE;
1877 //  socket->m_oriented            = TRUE;
1878   socket->m_server              = FALSE;
1879   socket->m_establishing        = FALSE;
1880   socket->m_timeout             = 10*60*1000;
1881                                 /* 10 minutes * 60 sec * 1000 millisec */
1882
1883   socket->m_cfSocket            = NULL ;
1884   socket->m_runLoopSource       = NULL ;
1885   socket->m_readStream          = NULL;
1886   socket->m_writeStream         = NULL;
1887
1888   return socket ;
1889 }
1890
1891 void GSocket_close(GSocket *socket)
1892 {
1893   if ( socket->m_cfSocket != NULL )
1894   {
1895     if ( socket->m_readStream )
1896     {
1897                   CFReadStreamClose(socket->m_readStream);
1898       CFRelease( socket->m_readStream ) ;
1899       socket->m_readStream = NULL ;
1900     }
1901     if ( socket->m_writeStream )
1902     {
1903                   CFWriteStreamClose(socket->m_writeStream);
1904       CFRelease( socket->m_writeStream ) ;
1905       socket->m_writeStream = NULL ;
1906     }
1907
1908     CFSocketInvalidate( socket->m_cfSocket ) ;
1909     CFRelease( socket->m_cfSocket ) ;
1910     socket->m_cfSocket = NULL ;
1911     socket->m_fd = INVALID_SOCKET ;
1912   }
1913 }
1914
1915 void GSocket_Shutdown(GSocket *socket)
1916 {
1917   GSocket_close( socket ) ;
1918
1919   /* Disable GUI callbacks */
1920   for (int evt = 0; evt < GSOCK_MAX_EVENT; evt++)
1921     socket->m_cbacks[evt] = NULL;
1922
1923   socket->m_detected = GSOCK_LOST_FLAG;
1924 }
1925
1926 void GSocket_destroy(GSocket *socket)
1927 {
1928   assert(socket != NULL);
1929
1930   /* Check that the socket is really shutdowned */
1931   if (socket->m_fd != INVALID_SOCKET)
1932     GSocket_Shutdown(socket);
1933
1934   /* Destroy private addresses */
1935   if (socket->m_local)
1936     GAddress_destroy(socket->m_local);
1937
1938   if (socket->m_peer)
1939     GAddress_destroy(socket->m_peer);
1940
1941   /* Destroy the socket itself */
1942   free(socket);
1943 }
1944
1945 GSocketError GSocket_Connect(GSocket *socket, GSocketStream stream)
1946 {
1947   assert(socket != NULL);
1948
1949   if (socket->m_fd != INVALID_SOCKET)
1950   {
1951     socket->m_error = GSOCK_INVSOCK;
1952     return GSOCK_INVSOCK;
1953   }
1954
1955   if (!socket->m_peer)
1956   {
1957     socket->m_error = GSOCK_INVADDR;
1958     return GSOCK_INVADDR;
1959   }
1960
1961   /* Streamed or dgram socket? */
1962   socket->m_stream   = (stream == GSOCK_STREAMED);
1963   socket->m_oriented = TRUE;
1964   socket->m_server   = FALSE;
1965   socket->m_establishing = FALSE;
1966
1967   GSocketError returnErr = GSOCK_NOERROR ;
1968   CFSocketError err ;
1969
1970   CFAllocatorRef alloc = kCFAllocatorDefault ;
1971   CFSocketContext ctx ;
1972   memset( &ctx , 0 , sizeof( ctx ) ) ;
1973   ctx.info = socket ;
1974   socket->m_cfSocket = CFSocketCreate( alloc , socket->m_peer->m_realfamily ,
1975      stream == GSOCK_STREAMED ? SOCK_STREAM : SOCK_DGRAM , 0 ,
1976       kCFSocketReadCallBack | kCFSocketWriteCallBack | kCFSocketConnectCallBack , wxMacCFSocketCallback , &ctx  ) ;
1977   _GSocket_Enable(socket, GSOCK_CONNECTION);
1978
1979   socket->m_fd = CFSocketGetNative( socket->m_cfSocket ) ;
1980
1981   CFStreamCreatePairWithSocket ( alloc , socket->m_fd , &socket->m_readStream , &socket->m_writeStream  );
1982         if ((socket->m_readStream == NULL) || (socket->m_writeStream == NULL))
1983   {
1984     GSocket_close(socket);
1985     socket->m_error = GSOCK_IOERR;
1986     return GSOCK_IOERR;
1987   }
1988
1989   if ( !CFReadStreamOpen( socket->m_readStream ) || !CFWriteStreamOpen( socket->m_writeStream ) )
1990   {
1991     GSocket_close(socket);
1992     socket->m_error = GSOCK_IOERR;
1993     return GSOCK_IOERR;
1994   }
1995
1996   CFRunLoopSourceRef rls = CFSocketCreateRunLoopSource(alloc , socket->m_cfSocket , 0);
1997   CFRunLoopAddSource(CFRunLoopGetCurrent() , rls, kCFRunLoopCommonModes);
1998   CFRelease(rls);
1999
2000   CFDataRef address = CFDataCreateWithBytesNoCopy(alloc, (const UInt8*) socket->m_peer->m_addr, socket->m_peer->m_len , kCFAllocatorNull);
2001   if ( !address )
2002     return GSOCK_MEMERR ;
2003
2004   err = CFSocketConnectToAddress( socket->m_cfSocket , address, socket->m_non_blocking ? -1 : socket->m_timeout / 1000  ) ;
2005   CFRelease(address);
2006
2007   if (err != kCFSocketSuccess)
2008   {
2009     if ( err == kCFSocketTimeout )
2010     {
2011       GSocket_close(socket);
2012       socket->m_error = GSOCK_TIMEDOUT ;
2013       return GSOCK_TIMEDOUT ;
2014     }
2015     // we don't know whether a connect in progress will be issued like this
2016     if ( err != kCFSocketTimeout && socket->m_non_blocking )
2017     {
2018       socket->m_establishing = TRUE;
2019       socket->m_error = GSOCK_WOULDBLOCK;
2020       return GSOCK_WOULDBLOCK;
2021     }
2022
2023     GSocket_close(socket);
2024     socket->m_error = GSOCK_IOERR;
2025     return GSOCK_IOERR;
2026   }
2027
2028   return GSOCK_NOERROR;
2029 }
2030
2031 /* Flags */
2032
2033 /* GSocket_SetNonBlocking:
2034  *  Sets the socket to non-blocking mode. All IO calls will return
2035  *  immediately.
2036  */
2037 void GSocket_SetNonBlocking(GSocket *socket, int non_block)
2038 {
2039   assert(socket != NULL);
2040
2041 //  GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) );
2042
2043   socket->m_non_blocking = non_block;
2044 }
2045
2046 /* GSocket_SetTimeout:
2047  *  Sets the timeout for blocking calls. Time is expressed in
2048  *  milliseconds.
2049  */
2050 void GSocket_SetTimeout(GSocket *socket, unsigned long millisec)
2051 {
2052   assert(socket != NULL);
2053
2054   socket->m_timeout = millisec;
2055 }
2056
2057 /* GSocket_GetError:
2058  *  Returns the last error which occurred for this socket. Note that successful
2059  *  operations do not clear this back to GSOCK_NOERROR, so use it only
2060  *  after an error.
2061  */
2062 GSocketError GSocket_GetError(GSocket *socket)
2063 {
2064   assert(socket != NULL);
2065
2066   return socket->m_error;
2067 }
2068
2069 /* Callbacks */
2070
2071 /* GSOCK_INPUT:
2072  *   There is data to be read in the input buffer. If, after a read
2073  *   operation, there is still data available, the callback function will
2074  *   be called again.
2075  * GSOCK_OUTPUT:
2076  *   The socket is available for writing. That is, the next write call
2077  *   won't block. This event is generated only once, when the connection is
2078  *   first established, and then only if a call failed with GSOCK_WOULDBLOCK,
2079  *   when the output buffer empties again. This means that the app should
2080  *   assume that it can write since the first OUTPUT event, and no more
2081  *   OUTPUT events will be generated unless an error occurs.
2082  * GSOCK_CONNECTION:
2083  *   Connection successfully established, for client sockets, or incoming
2084  *   client connection, for server sockets. Wait for this event (also watch
2085  *   out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
2086  * GSOCK_LOST:
2087  *   The connection is lost (or a connection request failed); this could
2088  *   be due to a failure, or due to the peer closing it gracefully.
2089  */
2090
2091 /* GSocket_SetCallback:
2092  *  Enables the callbacks specified by 'flags'. Note that 'flags'
2093  *  may be a combination of flags OR'ed toghether, so the same
2094  *  callback function can be made to accept different events.
2095  *  The callback function must have the following prototype:
2096  *
2097  *  void function(GSocket *socket, GSocketEvent event, char *cdata)
2098  */
2099 void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
2100                          GSocketCallback callback, char *cdata)
2101 {
2102   int count;
2103
2104   assert(socket != NULL);
2105
2106   for (count = 0; count < GSOCK_MAX_EVENT; count++)
2107   {
2108     if ((flags & (1 << count)) != 0)
2109     {
2110       socket->m_cbacks[count] = callback;
2111       socket->m_data[count] = cdata;
2112     }
2113   }
2114 }
2115
2116 /* GSocket_UnsetCallback:
2117  *  Disables all callbacks specified by 'flags', which may be a
2118  *  combination of flags OR'ed toghether.
2119  */
2120 void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags)
2121 {
2122   int count;
2123
2124   assert(socket != NULL);
2125
2126   for (count = 0; count < GSOCK_MAX_EVENT; count++)
2127   {
2128     if ((flags & (1 << count)) != 0)
2129     {
2130       socket->m_cbacks[count] = NULL;
2131       socket->m_data[count] = NULL;
2132     }
2133   }
2134 }
2135
2136
2137 #define CALL_CALLBACK(socket, event) {                                  \
2138   _GSocket_Disable(socket, event);                                      \
2139   if (socket->m_cbacks[event])                                          \
2140     socket->m_cbacks[event](socket, event, socket->m_data[event]);      \
2141 }
2142
2143 void _GSocket_Install_Callback(GSocket *socket, GSocketEvent event)
2144 {
2145     int c;
2146     switch (event)
2147     {
2148      case GSOCK_CONNECTION:
2149          if(socket->m_server)
2150             c = kCFSocketReadCallBack;
2151          else
2152             c = kCFSocketConnectCallBack;
2153          break;
2154      case GSOCK_LOST:
2155      case GSOCK_INPUT:
2156          c = kCFSocketReadCallBack;
2157          break;
2158      case GSOCK_OUTPUT:
2159          c = kCFSocketWriteCallBack;
2160          break;
2161      default:
2162          c = 0;
2163     }
2164     CFSocketEnableCallBacks(socket->m_cfSocket, c);
2165 }
2166
2167 void _GSocket_Uninstall_Callback(GSocket *socket, GSocketEvent event)
2168 {
2169     int c;
2170     switch (event)
2171     {
2172      case GSOCK_CONNECTION:
2173          if(socket->m_server)
2174             c = kCFSocketReadCallBack;
2175          else
2176             c = kCFSocketConnectCallBack;
2177          break;
2178      case GSOCK_LOST:
2179      case GSOCK_INPUT:
2180          c = kCFSocketReadCallBack;
2181          break;
2182      case GSOCK_OUTPUT:
2183          c = kCFSocketWriteCallBack;
2184          break;
2185      default:
2186          c = 0;
2187     }
2188     CFSocketDisableCallBacks(socket->m_cfSocket, c);
2189 }
2190
2191 void _GSocket_Enable(GSocket *socket, GSocketEvent event)
2192 {
2193   socket->m_detected &= ~(1 << event);
2194   _GSocket_Install_Callback(socket, event);
2195 }
2196
2197 void _GSocket_Disable(GSocket *socket, GSocketEvent event)
2198 {
2199   socket->m_detected |= (1 << event);
2200   _GSocket_Uninstall_Callback(socket, event);
2201 }
2202
2203 void wxMacCFSocketCallback(CFSocketRef s, CFSocketCallBackType callbackType,
2204                          CFDataRef address, const void* data, void* info)
2205 {
2206   GSocket* socket = (GSocket*)info;
2207
2208   switch (callbackType)
2209   {
2210     case kCFSocketConnectCallBack:
2211       if ( data )
2212       {
2213         SInt32 error = *((SInt32*)data) ;
2214         CALL_CALLBACK( socket , GSOCK_LOST ) ;
2215         GSocket_Shutdown(socket);
2216       }
2217       else
2218       {
2219         CALL_CALLBACK( socket , GSOCK_CONNECTION ) ;
2220       }
2221       break;
2222     case kCFSocketReadCallBack:
2223       CALL_CALLBACK( socket , GSOCK_INPUT ) ;
2224       break;
2225     case kCFSocketWriteCallBack:
2226       CALL_CALLBACK( socket , GSOCK_OUTPUT ) ;
2227       break;
2228     default:
2229       break;  /* We shouldn't get here. */
2230   }
2231 }
2232
2233 int GSocket_Read(GSocket *socket, char *buffer, int size)
2234 {
2235   int ret = 0 ;
2236
2237   assert(socket != NULL);
2238   // if ( !CFReadStreamHasBytesAvailable() )
2239   ret = CFReadStreamRead( socket->m_readStream , (UInt8*) buffer , size ) ;
2240
2241   return ret;
2242 }
2243
2244 int GSocket_Write(GSocket *socket, const char *buffer, int size)
2245 {
2246   int ret;
2247
2248   assert(socket != NULL);
2249   ret = CFWriteStreamWrite( socket->m_writeStream , (UInt8*) buffer , size ) ;
2250   return ret;
2251 }
2252
2253 GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
2254 {
2255   assert(socket != NULL);
2256   return flags & socket->m_detected;
2257 }
2258
2259 // ==========================================================================
2260 // wxSocketModule
2261 // ==========================================================================
2262
2263 class wxSocketModule : public wxModule
2264 {
2265 public:
2266     virtual bool OnInit()
2267     {
2268         // wxSocketBase will call GSocket_Init() itself when/if needed
2269         return TRUE;
2270     }
2271
2272     virtual void OnExit()
2273     {
2274         if ( wxSocketBase::IsInitialized() )
2275             wxSocketBase::Shutdown();
2276     }
2277
2278 private:
2279     DECLARE_DYNAMIC_CLASS(wxSocketModule)
2280 };
2281
2282 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
2283
2284 #endif
2285   // wxUSE_SOCKETS
2286