'-version' parameter for tex2rtf.

[wxWidgets.git] / src / common / socket.cpp

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 0862ac067087da29bc07a0ea7665b6966b262eb1..28a929198ce9ed97b8680ef100b52a537d5df2d8 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -1,1865 +1,1416 @@
-////////////////////////////////////////////////////////////////////////////////
-// Name:       socket.cpp
+/////////////////////////////////////////////////////////////////////////////
+// Name:       src/common/socket.cpp

 // Purpose:    Socket handler classes
 // Purpose:    Socket handler classes

-// Authors:    Guilhem Lavaux (completely rewritten from a basic API of Andrew
-//             Davidson(1995) in wxWeb)
+// Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia

 // Created:    April 1997
 // Created:    April 1997

-// Updated:    March 1998
-// Copyright:  (C) 1998, 1997, Guilhem Lavaux
+// Copyright:  (C) 1999-1997, Guilhem Lavaux
+//             (C) 2000-1999, Guillermo Rodriguez Garcia

 // RCS_ID:     $Id$
 // RCS_ID:     $Id$

-// License:    see wxWindows license
-////////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "socket.h"
-// #pragma interface
-// #pragma implementation "socket.cpp"
-#endif
+// License:    wxWindows licence
+/////////////////////////////////////////////////////////////////////////////

 
 

-#ifdef __MWERKS__
-typedef int socklen_t ;
-#endif
+// ==========================================================================
+// Declarations
+// ==========================================================================

 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
-#endif
-
-/////////////////////////////////////////////////////////////////////////////
-// wxWindows headers
-/////////////////////////////////////////////////////////////////////////////
-#include <wx/defs.h>
-#include <wx/object.h>
-#include <wx/string.h>
-#include <wx/timer.h>
-#include <wx/utils.h>
-
-// Not enough OS behaviour defined for wxStubs
-#ifndef __WXSTUBS__
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-
-/////////////////////////////////////////////////////////////////////////////
-// System specific headers
-/////////////////////////////////////////////////////////////////////////////
-#ifdef __WXMAC__
-// in order to avoid problems with our c library and double definitions
-#define close closesocket
-#define ioctl ioctlsocket
-
-#include <wx/mac/macsock.h>
-extern GUSISpinFn GUSISpin;
-#define PROCESS_EVENTS() wxMacProcessEvents()
-const short kwxMacNetEventsMax = 1000 ;
-short wxMacNetEventsTop = 0 ;
-short wxMacNetEventsBottom = 0 ;
-short wxMacNetEventsEvents[kwxMacNetEventsMax] ;
-void *wxMacNetEventsReferences[kwxMacNetEventsMax] ;
-
-#define FD_READ 1
-#define FD_WRITE 2
-#define FD_CLOSE 4
-#define FD_ACCEPT 8
-#define FD_CONNECT 16
-#define FD_READY 32
-
-extern "C" void wxMacSocketHandlerProc( void *refcon , short event ) ; // adds events
-extern "C" void wxMacSocketOnRequestProc( void *refcon , short event ) ; // consumes them
-extern "C" void GUSISetReference( short sock , short eventmask , void * data ) ;
-void wxMacProcessEvents() ;
-#endif
-
-#if defined(__WINDOWS__)
-#include <winsock.h>
-#endif // __WINDOWS__
-
-#if defined(__UNIX__)
-
-#ifdef VMS
-#include <socket.h>
-#else
-#include <sys/socket.h>
-#endif
-#include <sys/ioctl.h>
-
-#include <sys/time.h>
-#include <unistd.h>
-
-#ifdef sun
-#include <sys/filio.h>
-#endif
-
-#endif // __UNIX__
-
-#include <signal.h>
-#include <errno.h>
-
-#ifdef _MSC_VER
-#include <io.h>
+    #pragma hdrstop

 #endif
 
 #endif
 

-#if defined(__WXMOTIF__) || defined(__WXXT__)
-#include <X11/Intrinsic.h>
+#if wxUSE_SOCKETS

 
 

-/////////////////////////////
-// Needs internal variables
-/////////////////////////////
-#ifdef __WXXT__
-#define Uses_XtIntrinsic
-#endif
-
-#endif
-
-#if defined(__WXGTK__)
-#include <gtk/gtk.h>
-#endif
-
-/////////////////////////////////////////////////////////////////////////////
-// wxSocket headers
-/////////////////////////////////////////////////////////////////////////////
-#include "wx/module.h"
-#define WXSOCK_INTERNAL
-#include "wx/sckaddr.h"

 #include "wx/socket.h"
 
 #include "wx/socket.h"
 

-/////////////////////////////////////////////////////////////////////////////
-// Some patch ///// BEGIN
-/////////////////////////////////////////////////////////////////////////////
-#ifdef __WINDOWS__
-#define close closesocket
-#define ioctl ioctlsocket
-#ifdef errno
-#undef errno
-#endif
-#define errno WSAGetLastError()
-#ifdef EWOULDBLOCK
-#undef EWOULDBLOCK
-#endif
-#define EWOULDBLOCK WSAEWOULDBLOCK
-#define ETIMEDOUT WSAETIMEDOUT
-#undef EINTR
-#define EINTR WSAEINTR
+#ifndef WX_PRECOMP
+    #include "wx/object.h"
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/event.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
+    #include "wx/timer.h"
+    #include "wx/module.h"

 #endif
 
 #endif
 

-#ifndef __WINDOWS__
-#define INVALID_SOCKET -1
-#endif
+#include "wx/apptrait.h"

 
 

-#ifdef __WXMOTIF__
-#define wxAPP_CONTEXT ((XtAppContext)wxTheApp->GetAppContext())
-#endif
-
-#ifdef __WINDOWS__
-// This is an MS TCP/IP routine and is not needed here. Some WinSock
-// implementations (such as PC-NFS) will require you to include this
-// or a similar routine (see appendix in WinSock doc or help file).
-
-#if defined( NEED_WSAFDIsSet ) || defined( _MSC_VER )
-int PASCAL FAR __WSAFDIsSet(SOCKET fd, fd_set FAR *set)
-{
-  int i = set->fd_count;
-
-  while (i--)
-  {
-    if (set->fd_array[i] == fd)
-      return 1;
-  }
-
-  return 0;
-}
-#endif
-#endif
+#include "wx/sckaddr.h"
+#include "wx/datetime.h"
+
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxNet")
+
+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------
+
+// discard buffer
+#define MAX_DISCARD_SIZE (10 * 1024)
+
+// what to do within waits: we have 2 cases: from the main thread itself we
+// have to call wxYield() to let the events (including the GUI events and the
+// low-level (not wxWidgets) events from GSocket) be processed. From another
+// thread it is enough to just call wxThread::Yield() which will give away the
+// rest of our time slice: the explanation is that the events will be processed
+// by the main thread anyhow, without calling wxYield(), but we don't want to
+// eat the CPU time uselessly while sitting in the loop waiting for the data
+#if wxUSE_THREADS
+    #define PROCESS_EVENTS()        \
+    {                               \
+        if ( wxThread::IsMain() )   \
+            wxYield();              \
+        else                        \
+            wxThread::Yield();      \
+    }
+#else // !wxUSE_THREADS
+    #define PROCESS_EVENTS() wxYield()
+#endif // wxUSE_THREADS/!wxUSE_THREADS

 
 

-#if defined(__WINDOWS__)
-#define PROCESS_EVENTS() wxYield()
-#elif defined(__WXXT__) || defined(__WXMOTIF__)
-#define PROCESS_EVENTS() XtAppProcessEvent(wxAPP_CONTEXT, XtIMAll)
-#elif defined(__WXGTK__)
-#define PROCESS_EVENTS() gtk_main_iteration()
-#endif
+#define wxTRACE_Socket _T("wxSocket")

 
 

-/////////////////////////////////////////////////////////////////////////////
-// Some patch ///// END
-/////////////////////////////////////////////////////////////////////////////
+// --------------------------------------------------------------------------
+// wxWin macros
+// --------------------------------------------------------------------------

 
 

-// --------------------------------------------------------------
-// Module
-// --------------------------------------------------------------
-class wxSocketModule: public wxModule 
-{
-  DECLARE_DYNAMIC_CLASS(wxSocketModule)
-public:
-  wxSocketModule() {}
-  bool OnInit();
-  void OnExit();
-};
-
-// --------------------------------------------------------------
-// ClassInfos
-// --------------------------------------------------------------
-#if !USE_SHARED_LIBRARY

 IMPLEMENT_CLASS(wxSocketBase, wxObject)
 IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
 IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
 IMPLEMENT_CLASS(wxSocketBase, wxObject)
 IMPLEMENT_CLASS(wxSocketServer, wxSocketBase)
 IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)

-IMPLEMENT_CLASS(wxSocketHandler, wxObject)
+IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)

 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)

-IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
-#endif

 
 

-class wxSockWakeUp : public wxTimer 
+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------
+
+class wxSocketState : public wxObject

 {
 public:
 {
 public:

-  int *my_id;
-  int n_val;
-  wxSocketBase *sock;
-
-  wxSockWakeUp(wxSocketBase *_sock, int *id, int new_val) 
-  {
-    my_id = id; n_val = new_val;
-    sock = _sock;
-  }
-  virtual void Notify() 
-  {
-    *my_id = n_val;
-    if (sock) sock->Notify(FALSE);
-  }
-};
+  wxSocketFlags            m_flags;
+  wxSocketEventFlags       m_eventmask;
+  bool                     m_notify;
+  void                    *m_clientData;

 
 

-/// Socket request
-class SockRequest : public wxObject 
-{

 public:
 public:

-  char *buffer;
-  size_t size, nbytes;
-  bool done;
-  int error;
-  wxSockWakeUp *auto_wakeup;
-  wxSocketBase::wxRequestNotify type;
+  wxSocketState() : wxObject() {}
+
+  DECLARE_NO_COPY_CLASS(wxSocketState)

 };
 
 };
 

+// ==========================================================================
+// wxSocketBase
+// ==========================================================================

 
 

-/////////////////////////////////////////////////////////////////////////////
-// Some internal define
-/////////////////////////////////////////////////////////////////////////////
+// --------------------------------------------------------------------------
+// Initialization and shutdown
+// --------------------------------------------------------------------------

 
 

-// --------------------------------------------------------------
-// --------- wxSocketBase CONSTRUCTOR ---------------------------
-// --------------------------------------------------------------
-wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
-         wxSocketBase::wxSockType _type) :
-  wxEvtHandler(),
-  m_flags(_flags), m_type(_type), m_connected(FALSE), m_connecting(FALSE),
-  m_fd(INVALID_SOCKET), m_waitflags(0), m_cbk(0), m_cdata(0), m_id(-1),
-  m_handler(0),
-  m_neededreq((wxRequestNotify)(REQ_READ | REQ_LOST)),
-  m_cbkon(FALSE),
-  m_unread(NULL), m_unrd_size(0),
-  m_processing(FALSE),
-  m_timeout(3600), m_wantbuf(0)
-{
-  m_internal = new wxSockInternal;
-#if defined(__WXXT__) || defined(__WXMOTIF__) || defined(__WXGTK__)
-  m_internal->sock_inputid = 0;
-  m_internal->sock_outputid = 0;
-  m_internal->sock_exceptid = 0;
-#endif
-#ifdef __WINDOWS__
-  m_internal->my_msg = 0;
-#endif
-}
+// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses
+//           to m_countInit with a crit section
+size_t wxSocketBase::m_countInit = 0;

 
 

-wxSocketBase::wxSocketBase() :
-  wxEvtHandler(),
-  m_flags(WAITALL), m_type(SOCK_UNINIT), m_connected(FALSE),
-  m_connecting(FALSE), m_fd(INVALID_SOCKET), m_waitflags(0),
-  m_cbk(0), m_cdata(0),
-  m_id(-1), m_handler(0),
-  m_neededreq((wxRequestNotify)(REQ_READ | REQ_LOST)),
-  m_cbkon(FALSE),
-  m_unread(NULL), m_unrd_size(0),
-  m_processing(FALSE),
-  m_timeout(3600), m_wantbuf(0)
+bool wxSocketBase::IsInitialized()

 {
 {

-  m_internal = new wxSockInternal;
-#if defined(__WXXT__) || defined(__WXMOTIF__) || defined(__WXGTK__)
-  m_internal->sock_inputid = 0;
-  m_internal->sock_outputid = 0;
-  m_internal->sock_exceptid = 0;
-#endif
-#ifdef __WINDOWS__
-  m_internal->my_msg = 0;
-#endif
+    return m_countInit > 0;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase
-// --------------------------------------------------------------
-
-wxSocketBase::~wxSocketBase()
+bool wxSocketBase::Initialize()

 {
 {

-  DestroyCallbacks();
-  Close();
-
-  if (m_unread)
-    free(m_unread);
-  if (m_handler) 
-  {
-#ifdef __WINDOWS__
-    if (m_internal->my_msg)
-      m_handler->DestroyMessage(m_internal->my_msg);
-#endif
-    m_handler->UnRegister(this);
-  }
-  m_states.DeleteContents(TRUE);
+    if ( !m_countInit++ )
+    {
+        /*
+            Details: Initialize() creates a hidden window as a sink for socket
+            events, such as 'read completed'. wxMSW has only one message loop
+            for the main thread. If Initialize is called in a secondary thread,
+            the socket window will be created for the secondary thread, but
+            since there is no message loop on this thread, it will never
+            receive events and all socket operations will time out.
+            BTW, the main thread must not be stopped using sleep or block
+            on a semaphore (a bad idea in any case) or socket operations
+            will time out.
+
+            On the Mac side, Initialize() stores a pointer to the CFRunLoop for
+            the main thread. Because secondary threads do not have run loops,
+            adding event notifications to the "Current" loop would have no
+            effect at all, events would never fire.
+        */
+        wxASSERT_MSG( wxIsMainThread(),
+            wxT("Call wxSocketBase::Initialize() from the main thread first!"));
+
+        wxAppTraits *traits = wxAppConsole::GetInstance() ?
+                              wxAppConsole::GetInstance()->GetTraits() : NULL;
+        GSocketGUIFunctionsTable *functions =
+            traits ? traits->GetSocketGUIFunctionsTable() : NULL;
+        GSocket_SetGUIFunctions(functions);
+
+        if ( !GSocket_Init() )
+        {
+            m_countInit--;
+
+            return false;
+        }
+    }

 
 

-  delete m_internal;
+    return true;

 }
 
 }
 

-bool wxSocketBase::Close()
+void wxSocketBase::Shutdown()

 {
 {

-  if (m_fd != INVALID_SOCKET) 
-  {
-    for (int i=0;i<3;i++) 
+    // we should be initialized
+    wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") );
+    if ( --m_countInit == 0 )

     {
     {

-      wxNode *n, *node = req_list[i].First();
-
-      while (node) 
-      {
-        SockRequest *req = (SockRequest *)node->Data();
-        req->done = TRUE;
-
-        n = node->Next();
-        delete node;
-        node = n;
-      }
+        GSocket_Cleanup();

     }
     }

-
-    DestroyCallbacks();
-    shutdown(m_fd, 2);
-    close(m_fd);
-    m_fd = INVALID_SOCKET;
-    m_connected = FALSE;
-  }
-
-  return TRUE;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase base IO function
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------

 
 

-wxSocketBase& wxSocketBase::Read(char* buffer, size_t nbytes)
+void wxSocketBase::Init()

 {
 {

-  m_lcount = GetPushback(buffer, nbytes, FALSE);
+  m_socket       = NULL;
+  m_type         = wxSOCKET_UNINIT;

 
 

-  // If we have got the whole needed buffer or if we don't want to
-  // wait then it returns immediately.
-  if (!nbytes || (m_lcount && !(m_flags & WAITALL)) )
-    return *this;
+  // state
+  m_flags        = 0;
+  m_connected    =
+  m_establishing =
+  m_reading      =
+  m_writing      =
+  m_error        = false;
+  m_lcount       = 0;
+  m_timeout      = 600;
+  m_beingDeleted = false;

 
 

-  WantBuffer(buffer, nbytes, EVT_READ);
+  // pushback buffer
+  m_unread       = NULL;
+  m_unrd_size    = 0;
+  m_unrd_cur     = 0;

 
 

-  return *this;
-}
+  // events
+  m_id           = wxID_ANY;
+  m_handler      = NULL;
+  m_clientData   = NULL;
+  m_notify       = false;
+  m_eventmask    = 0;

 
 

-wxSocketBase& wxSocketBase::Peek(char* buffer, size_t nbytes)
-{
-  size_t nbytes_old = nbytes;
-
-  nbytes -= GetPushback(buffer, nbytes, TRUE);
-  if (!nbytes) 
+  if ( !IsInitialized() )

   {
   {

-    m_lcount = nbytes_old;
-    return *this;
+      // this Initialize() will be undone by wxSocketModule::OnExit(), all the
+      // other calls to it should be matched by a call to Shutdown()
+      Initialize();

   }
   }

-
-  WantBuffer(buffer, nbytes, EVT_PEEK);
-
-  return *this;

 }
 
 }
 

-wxSocketBase& wxSocketBase::Write(const char *buffer, size_t nbytes)
+wxSocketBase::wxSocketBase()

 {
 {

-  WantBuffer((char *)buffer, nbytes, EVT_WRITE);
-  return *this;
+  Init();

 }
 
 }
 

-wxSocketBase& wxSocketBase::ReadMsg(char* buffer, size_t nbytes)
+wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)

 {
 {

-  SockMsg msg;
-  size_t len, len2, sig;
-
-  Read((char *)&msg, sizeof(msg));
-  if (m_lcount != sizeof(msg))
-    return *this;
-
-  sig = msg.sig[0] & 0xff;
-  sig |= (size_t)(msg.sig[1] & 0xff) << 8;
-  sig |= (size_t)(msg.sig[2] & 0xff) << 16;
-  sig |= (size_t)(msg.sig[3] & 0xff) << 24;
+  Init();

 
 

-  if (sig != 0xfeeddead)
-    return *this;
-  len = msg.len[0] & 0xff;
-  len |= (size_t)(msg.len[1] & 0xff) << 8;
-  len |= (size_t)(msg.len[2] & 0xff) << 16;
-  len |= (size_t)(msg.len[3] & 0xff) << 24;
-  len2 = len;
-  if (len > nbytes)
-    len = nbytes;
-  else
-    len2 = 0;
-
-  if (Read(buffer, len).LastCount() != len)
-    return *this;
-  if (len2 && (Read(NULL, len2).LastCount() != len2))
-    return *this;
-  if (Read((char *)&msg, sizeof(msg)).LastCount() != sizeof(msg))
-    return *this;
-
-  sig = msg.sig[0] & 0xff;
-  sig |= (size_t)(msg.sig[1] & 0xff) << 8;
-  sig |= (size_t)(msg.sig[2] & 0xff) << 16;
-  sig |= (size_t)(msg.sig[3] & 0xff) << 24;
-// ERROR
-  if (sig != 0xdeadfeed)
-    return *this;
-
-  return *this;
+  m_flags = flags;
+  m_type  = type;

 }
 
 }
 

-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, size_t nbytes)
+wxSocketBase::~wxSocketBase()

 {
 {

-  SockMsg msg;
-
-  msg.sig[0] = (char) 0xad;
-  msg.sig[1] = (char) 0xde;
-  msg.sig[2] = (char) 0xed;
-  msg.sig[3] = (char) 0xfe;
-
-  msg.len[0] = (char) nbytes & 0xff;
-  msg.len[1] = (char) (nbytes >> 8) & 0xff;
-  msg.len[2] = (char) (nbytes >> 16) & 0xff;
-  msg.len[3] = (char) (nbytes >> 24) & 0xff;
-
-  if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg))
-    return *this;
-  if (Write(buffer, nbytes).LastCount() < nbytes)
-    return *this;
-
-  msg.sig[0] = (char) 0xed;
-  msg.sig[1] = (char) 0xfe;
-  msg.sig[2] = (char) 0xad;
-  msg.sig[3] = (char) 0xde;
-  msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
-  Write((char *)&msg, sizeof(msg));
+  // Just in case the app called Destroy() *and* then deleted
+  // the socket immediately: don't leave dangling pointers.
+  wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+  if ( traits )
+      traits->RemoveFromPendingDelete(this);

 
 

-  return *this;
-}
+  // Shutdown and close the socket
+  if (!m_beingDeleted)
+    Close();

 
 

-wxSocketBase& wxSocketBase::Unread(const char *buffer, size_t nbytes)
-{
-  CreatePushbackAfter(buffer, nbytes);
-  return *this;
-}
+  // Destroy the GSocket object
+  if (m_socket)
+    delete m_socket;

 
 

-bool wxSocketBase::IsData() const
-{
-  struct timeval tv;
-  fd_set sock_set;
-
-  if (m_fd < 0)
-    return FALSE;
-  if (m_unrd_size > 0)
-    return TRUE;
-
-  tv.tv_sec = 0;
-  tv.tv_usec = 0;
-  FD_ZERO(&sock_set);
-  FD_SET(m_fd, &sock_set);
-  select(FD_SETSIZE, &sock_set, NULL, NULL, &tv);
-  return (FD_ISSET(m_fd, &sock_set) != 0);
+  // Free the pushback buffer
+  if (m_unread)
+    free(m_unread);

 }
 
 }
 

-// ---------------------------------------------------------------------
-// --------- wxSocketBase Discard(): deletes all byte in the input queue
-// ---------------------------------------------------------------------
-void wxSocketBase::Discard()
+bool wxSocketBase::Destroy()

 {
 {

-#define MAX_BUFSIZE (10*1024)
-  char *my_data = new char[MAX_BUFSIZE];
-  size_t recv_size = MAX_BUFSIZE;
+  // Delayed destruction: the socket will be deleted during the next
+  // idle loop iteration. This ensures that all pending events have
+  // been processed.
+  m_beingDeleted = true;
+
+  // Shutdown and close the socket
+  Close();

 
 

-  SaveState();
-  SetFlags((wxSockFlags)(NOWAIT | SPEED));
+  // Supress events from now on
+  Notify(false);

 
 

-  while (recv_size == MAX_BUFSIZE) 
+  // schedule this object for deletion
+  wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+  if ( traits )

   {
   {

-    recv_size = Read(my_data, MAX_BUFSIZE).LastCount();
+      // let the traits object decide what to do with us
+      traits->ScheduleForDestroy(this);
+  }
+  else // no app or no traits
+  {
+      // in wxBase we might have no app object at all, don't leak memory
+      delete this;

   }
 
   }
 

-  RestoreState();
-  delete [] my_data;
-
-#undef MAX_BUFSIZE
+  return true;

 }
 
 }
 

-// If what? Who seems to need unsigned int?
-// BTW uint isn't even defined on wxMSW for VC++ for some reason. Even if it
-// were, getpeername/getsockname don't take unsigned int*, they take int*.
-//
-// Under glibc 2.0.7, socketbits.h declares socklen_t to be unsigned int
-// and it uses *socklen_t as the 3rd parameter. Robert.
-
-#ifdef __LINUX__
-#define wxSOCKET_INT socklen_t
-#else
-#define wxSOCKET_INT int
-#endif
+// --------------------------------------------------------------------------
+// Basic IO calls
+// --------------------------------------------------------------------------

 
 

-// --------------------------------------------------------------
-// wxSocketBase socket info functions
-// --------------------------------------------------------------
+// The following IO operations update m_error and m_lcount:
+// {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard}
+//
+// TODO: Should Connect, Accept and AcceptWith update m_error?

 
 

-bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
+bool wxSocketBase::Close()

 {
 {

-  struct sockaddr my_addr;
-  wxSOCKET_INT len_addr = sizeof(my_addr);
+  // Interrupt pending waits
+  InterruptWait();

 
 

-  if (m_fd < 0)
-    return FALSE;
+  if (m_socket)
+  {
+    // Disable callbacks
+    m_socket->UnsetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                    GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);

 
 

-  if (getpeername(m_fd, (struct sockaddr *)&my_addr, &len_addr) < 0)
-    return FALSE;
+    // Shutdown the connection
+    m_socket->Shutdown();
+  }

 
 

-  addr_man.Disassemble(&my_addr, len_addr);
-  return TRUE;
+  m_connected = false;
+  m_establishing = false;
+  return true;

 }
 
 }
 

-bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
+wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes)

 {
 {

-  struct sockaddr my_addr;
-  wxSOCKET_INT len_addr = sizeof(my_addr);
+  // Mask read events
+  m_reading = true;

 
 

-  if (m_fd < 0)
-    return FALSE;
+  m_lcount = _Read(buffer, nbytes);

 
 

-  if (getsockname(m_fd, (struct sockaddr *)&my_addr, &len_addr) < 0)
+  // If in wxSOCKET_WAITALL mode, all bytes should have been read.
+  if (m_flags & wxSOCKET_WAITALL)
+    m_error = (m_lcount != nbytes);
+  else
+    m_error = (m_lcount == 0);

 
 

-    return FALSE;
+  // Allow read events from now on
+  m_reading = false;

 
 

-  addr_man.Disassemble(&my_addr, len_addr);
-  return TRUE;
+  return *this;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase wait functions
-// --------------------------------------------------------------
-
-void wxSocketBase::SaveState()
+wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes)

 {
 {

-  wxSockState *state = new wxSockState;
+  int total;

 
 

-  state->cbk_on = m_cbkon;
-  state->cbk_set= m_neededreq;
-  state->cbk    = m_cbk;
-  state->cdata  = m_cdata;
-  state->flags  = m_flags;
-  state->notif  = m_notifyme;
+  // Try the pushback buffer first
+  total = GetPushback(buffer, nbytes, false);
+  nbytes -= total;
+  buffer  = (char *)buffer + total;

 
 

-  m_states.Append(state);
-}
+  // Return now in one of the following cases:
+  // - the socket is invalid,
+  // - we got all the data
+  if ( !m_socket ||
+       !nbytes )
+    return total;

 
 

-void wxSocketBase::RestoreState()
-{
-  wxNode *node;
-
-  node = m_states.Last();
-  if (!node)
-    return;
-
-  wxSockState *state = (wxSockState *)node->Data();
+  // Possible combinations (they are checked in this order)
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE
+  //
+  int ret;
+  if (m_flags & wxSOCKET_NOWAIT)
+  {
+    m_socket->SetNonBlocking(1);
+    ret = m_socket->Read((char *)buffer, nbytes);
+    m_socket->SetNonBlocking(0);

 
 

-  SetFlags(state->flags);
-  m_neededreq = state->cbk_set;
-  m_cbk       = state->cbk;
-  m_cdata     = state->cdata;
-  m_notifyme  = state->notif;
-  if (state->cbk_on)
-    SetupCallbacks();
+    if (ret > 0)
+      total += ret;
+  }

   else
   else

-    DestroyCallbacks();
-
-  delete node;
-  delete state;
-}
-
-// --------------------------------------------------------------
-// --------- wxSocketBase wait functions ------------------------
-// --------------------------------------------------------------
-
-bool wxSocketBase::_Wait(long seconds, long microseconds, int type)
-{
-  if ((!m_connected && !m_connecting) || m_fd < 0)
-    return FALSE;
-
-  wxSockWakeUp wakeup(this, &m_waitflags, 0);
-
-  SaveState();
-  SetNotify((wxRequestNotify)type);
-  SetupCallbacks();
+  {
+    bool more = true;

 
 

-  if (seconds != -1)
-    wakeup.Start((int)(seconds*1000 + (microseconds / 1000)), TRUE);
+    while (more)
+    {
+      if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() )
+        break;

 
 

-  m_waitflags = 0x80 | type;
-  while (m_waitflags & 0x80)
-    PROCESS_EVENTS();
+      ret = m_socket->Read((char *)buffer, nbytes);

 
 

-  RestoreState();
+      if (ret > 0)
+      {
+        total  += ret;
+        nbytes -= ret;
+        buffer  = (char *)buffer + ret;
+      }

 
 

-  if (m_waitflags & 0x40) 
-  {
-    m_waitflags = 0;
-    return TRUE;
+      // If we got here and wxSOCKET_WAITALL is not set, we can leave
+      // now. Otherwise, wait until we recv all the data or until there
+      // is an error.
+      //
+      more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));
+    }

   }
   }

-  m_waitflags = 0;

 
 

-  return FALSE;
+  return total;

 }
 
 }
 

-bool wxSocketBase::Wait(long seconds, long microseconds)
+wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes)

 {
 {

-  return _Wait(seconds, microseconds, REQ_ACCEPT | REQ_CONNECT |
-                                      REQ_READ | REQ_WRITE | REQ_LOST);
-}
+  wxUint32 len, len2, sig, total;
+  bool error;
+  int old_flags;
+  struct
+  {
+    unsigned char sig[4];
+    unsigned char len[4];
+  } msg;

 
 

-bool wxSocketBase::WaitForRead(long seconds, long microseconds)
-{
-  return _Wait(seconds, microseconds, REQ_READ | REQ_LOST);
-}
+  // Mask read events
+  m_reading = true;

 
 

-bool wxSocketBase::WaitForWrite(long seconds, long microseconds)
-{
-  return _Wait(seconds, microseconds, REQ_WRITE);
-}
+  total = 0;
+  error = true;
+  old_flags = m_flags;
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);

 
 

-bool wxSocketBase::WaitForLost(long seconds, long microseconds)
-{
-  return _Wait(seconds, microseconds, REQ_LOST);
-}
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;

 
 

-// --------------------------------------------------------------
-// --------- wxSocketBase callback management -------------------
-// --------------------------------------------------------------
-
-#if defined(__WXMOTIF__) || defined(__WXXT__) || defined(__WXGTK__)
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-static void wx_socket_read(XtPointer client, int *fid,
-         XtInputId *WXUNUSED(id))
-#define fd *fid
-#else
-static void wx_socket_read(gpointer client, gint fd,
-                           GdkInputCondition WXUNUSED(cond))
-#define fd fd
-#endif
-{
-  wxSocketBase *sock = (wxSocketBase *)client;
-  char c;
-  int i;
+  sig = (wxUint32)msg.sig[0];
+  sig |= (wxUint32)(msg.sig[1] << 8);
+  sig |= (wxUint32)(msg.sig[2] << 16);
+  sig |= (wxUint32)(msg.sig[3] << 24);

 
 

-  i = recv(fd, &c, 1, MSG_PEEK);
+  if (sig != 0xfeeddead)
+  {
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
+    goto exit;
+  }

 
 

-  if (i == -1 && (sock->NeededReq() & wxSocketBase::REQ_ACCEPT)) 
+  len = (wxUint32)msg.len[0];
+  len |= (wxUint32)(msg.len[1] << 8);
+  len |= (wxUint32)(msg.len[2] << 16);
+  len |= (wxUint32)(msg.len[3] << 24);
+
+  if (len > nbytes)

   {
   {

-    sock->OnRequest(wxSocketBase::EVT_ACCEPT);
-    return;
+    len2 = len - nbytes;
+    len = nbytes;

   }
   }

+  else
+    len2 = 0;

 
 

-  if (i != 0) 
+  // Don't attemp to read if the msg was zero bytes long.
+  if (len)

   {
   {

-    if (!(sock->NeededReq() & wxSocketBase::REQ_READ))
-    {
-      return;
-    }
+    total = _Read(buffer, len);

 
 

-    sock->OnRequest(wxSocketBase::EVT_READ);
-  } 
-  else 
+    if (total != len)
+      goto exit;
+  }
+  if (len2)

   {
   {

-    if (!(sock->NeededReq() & wxSocketBase::REQ_LOST)) 
+    char *discard_buffer = new char[MAX_DISCARD_SIZE];
+    long discard_len;
+
+    // NOTE: discarded bytes don't add to m_lcount.
+    do

     {
     {

-      sock->Close();
-      return;
+      discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);
+      discard_len = _Read(discard_buffer, (wxUint32)discard_len);
+      len2 -= (wxUint32)discard_len;

     }
     }

+    while ((discard_len > 0) && len2);

 
 

-    sock->OnRequest(wxSocketBase::EVT_LOST);
-  }
-}
-#undef fd
-
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-static void wx_socket_write(XtPointer client, int *WXUNUSED(fid),
-          XtInputId *WXUNUSED(id))
-#else
-static void wx_socket_write(gpointer client, gint WXUNUSED(fd),
-          GdkInputCondition WXUNUSED(cond))
-#endif
-{
-  wxSocketBase *sock = (wxSocketBase *)client;
+    delete [] discard_buffer;

 
 

-  if (!sock->IsConnected())
-    sock->OnRequest(wxSocketBase::EVT_CONNECT);
-  else
-    sock->OnRequest(wxSocketBase::EVT_WRITE);
-}
-#endif
-
-#ifdef wx_xview
-Notify_value wx_sock_read_xview (Notify_client client, int fd)
-{
-  wxSocketBase *sock = (wxSocketBase *)client;
-  char c;
-  int i;
+    if (len2 != 0)
+      goto exit;
+  }
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;

 
 

-  i = recv(fd, &c, 1, MSG_PEEK);
+  sig = (wxUint32)msg.sig[0];
+  sig |= (wxUint32)(msg.sig[1] << 8);
+  sig |= (wxUint32)(msg.sig[2] << 16);
+  sig |= (wxUint32)(msg.sig[3] << 24);

 
 

-  if (i == -1 && (sock->NeededReq() & wxSocketBase::REQ_ACCEPT)) 
+  if (sig != 0xdeadfeed)

   {
   {

-    sock->OnRequest(wxSocketBase::EVT_ACCEPT);
-    return;
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
+    goto exit;

   }
 
   }
 

-  /* Bytes arrived */
-  if (i != 0) 
-  {
-    if (!(sock->NeededReq() & wxSocketBase::REQ_READ))
-      return (Notify_value) FALSE;
+  // everything was OK
+  error = false;

 
 

-    sock->OnRequest(wxSocketBase::EVT_READ);
-  } 
-  else 
-  {
-    if (!(sock->NeededReq() & wxSocketBase::REQ_LOST))
-      return;
+exit:
+  m_error = error;
+  m_lcount = total;
+  m_reading = false;
+  SetFlags(old_flags);

 
 

-    sock->OnRequest(wxSocketBase::EVT_LOST);
-  }
-
-  return (Notify_value) FALSE;
+  return *this;

 }
 
 }
 

-Notify_value wx_sock_write_xview (Notify_client client, int fd)
+wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)

 {
 {

-  wxSocketBase *sock = (wxSocketBase *)client;
+  // Mask read events
+  m_reading = true;

 
 

-  if (!sock->IsConnected())
-    sock->OnRequest(wxSocketBase::EVT_CONNECT);
+  m_lcount = _Read(buffer, nbytes);
+  Pushback(buffer, m_lcount);
+
+  // If in wxSOCKET_WAITALL mode, all bytes should have been read.
+  if (m_flags & wxSOCKET_WAITALL)
+    m_error = (m_lcount != nbytes);

   else
   else

-    sock->OnRequest(wxSocketBase::EVT_WRITE);
+    m_error = (m_lcount == 0);

 
 

-  return (Notify_value) TRUE;
-}
-#endif
+  // Allow read events again
+  m_reading = false;

 
 

-wxSocketBase::wxRequestNotify wxSocketBase::EventToNotify(wxRequestEvent evt)
-{
-  switch (evt) 
-  {
-  case EVT_READ:
-    return REQ_READ;
-  case EVT_PEEK:
-    return REQ_PEEK;
-  case EVT_WRITE:
-    return REQ_WRITE;
-  case EVT_LOST:
-    return REQ_LOST;
-  case EVT_ACCEPT:
-    return REQ_ACCEPT;
-  case EVT_CONNECT:
-    return REQ_CONNECT;
-  }
-  return 0;
+  return *this;

 }
 
 }
 

-void wxSocketBase::SetFlags(wxSockFlags _flags)
+wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)

 {
 {

-  m_flags = _flags;
-  if (_flags & SPEED) 
-  {
-    unsigned long flag = 0;
-    ioctl(m_fd, FIONBIO, &flag);
+  // Mask write events
+  m_writing = true;

 
 

-    // SPEED and WAITALL are antagonists.
-    m_flags = (wxSockFlags)(m_flags & ~WAITALL);
+  m_lcount = _Write(buffer, nbytes);

 
 

-    Notify(FALSE);
-  } 
-  else 
-  {
-    unsigned long flag = 1;
-    ioctl(m_fd, FIONBIO, &flag);
-  }
-}
-
-void wxSocketBase::SetNotify(wxRequestNotify flags)
-{
-  wxRequestNotify old_needed_req = m_neededreq;
-  if (flags & REQ_ACCEPT) 
-  {
-    /* Check if server */
-    if (!(GetClassInfo()->IsKindOf(CLASSINFO(wxSocketServer))))
-      flags &= ~REQ_ACCEPT;
-  }
-  m_neededreq = flags;
+  // If in wxSOCKET_WAITALL mode, all bytes should have been written.
+  if (m_flags & wxSOCKET_WAITALL)
+    m_error = (m_lcount != nbytes);
+  else
+    m_error = (m_lcount == 0);

 
 

-/*
-  if (m_cbkon && old_needed_req != flags)    seems to be wrong, Robert Roebling
-    SetupCallbacks();
-*/
+  // Allow write events again
+  m_writing = false;

 
 

-  if (old_needed_req != flags)
-    SetupCallbacks();
+  return *this;

 }
 
 }
 

-void wxSocketBase::SetupCallbacks()
+wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes)

 {
 {

-  if (m_fd == INVALID_SOCKET || !m_handler || (m_flags & SPEED))
-    return;
-
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-  if (m_neededreq & (REQ_ACCEPT | REQ_READ | REQ_LOST)) 
-  {
-    if (m_internal->sock_inputid <= 0)
-    {
-      m_internal->sock_inputid = XtAppAddInput (wxAPP_CONTEXT, m_fd,
-                                       (XtPointer *) XtInputReadMask,
-                                       (XtInputCallbackProc) wx_socket_read,
-                                       (XtPointer) this);
-    }
-  }
-  else
-  {
-    if (m_internal->sock_inputid > 0)
-    {
-      XtRemoveInput(m_internal->sock_inputid);
-      m_internal->sock_inputid = 0;
-    }
-  }
-  
-  if (m_neededreq & (REQ_CONNECT | REQ_WRITE)) 
-  {
-    if (m_internal->sock_outputid <= 0)
-    {
-      m_internal->sock_outputid = XtAppAddInput (wxAPP_CONTEXT, m_fd,
-                                       (XtPointer *) XtInputWriteMask,
-                                       (XtInputCallbackProc) wx_socket_write,
-                                       (XtPointer) this);
-    }
-  }
-  else
-  {
-    if (m_internal->sock_outputid > 0)
-    {
-      XtRemoveInput(m_internal->sock_outputid);
-      m_internal->sock_outputid = 0;
-    }
-  }
-#endif
+  wxUint32 total = 0;

 
 

+  // If the socket is invalid or parameters are ill, return immediately
+  if (!m_socket || !buffer || !nbytes)
+    return 0;

 
 

-#ifdef __WXGTK__
-  if (m_neededreq & (REQ_ACCEPT | REQ_READ | REQ_LOST)) 
-  {
-    if (m_internal->sock_inputid <= 0)
-    {
-       m_internal->sock_inputid = gdk_input_add(m_fd, GDK_INPUT_READ,
-                                           wx_socket_read, (gpointer)this);
-    }
-  }
-  else
-  {
-    if (m_internal->sock_inputid > 0)
-    {
-/*
-      gdk_input_remove(m_internal->sock_inputid);
-      m_internal->sock_inputid = 0;
-*/
-    }
-  }
-  
-  if (m_neededreq & (REQ_CONNECT | REQ_WRITE)) 
-  {
-    if (m_internal->sock_outputid <= 0)
-    {
-      m_internal->sock_outputid = gdk_input_add(m_fd, GDK_INPUT_WRITE,
-                                             wx_socket_write, (gpointer)this);
-    }
-  }
-  else
+  // Possible combinations (they are checked in this order)
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE
+  //
+  int ret;
+  if (m_flags & wxSOCKET_NOWAIT)

   {
   {

-    if (m_internal->sock_outputid > 0)
-    {
-/*
-      gdk_input_remove(m_internal->sock_outputid);
-      m_internal->sock_outputid = 0;
-*/
-    }
-  }
-#endif
+    m_socket->SetNonBlocking(1);
+    ret = m_socket->Write((const char *)buffer, nbytes);
+    m_socket->SetNonBlocking(0);

 
 

-
-#ifdef __WXMSW__
-  WORD mask = 0;
-
-  if (m_neededreq & REQ_READ)
-    mask |= FD_READ;
-  if (m_neededreq & REQ_WRITE)
-    mask |= FD_WRITE;
-  if (m_neededreq & REQ_LOST)
-    mask |= FD_CLOSE;
-  if (m_neededreq & REQ_ACCEPT)
-    mask |= FD_ACCEPT;
-  if (m_neededreq & REQ_CONNECT)
-    mask |= FD_CONNECT;
-
-  if (!m_internal->my_msg)
-    m_internal->my_msg = m_handler->NewMessage(this);
-  WSAAsyncSelect(m_fd, m_handler->GetHWND(), m_internal->my_msg, mask);
-#endif
-#ifdef __WXMAC__
-  short mask = 0;
-
-  if (m_neededreq & REQ_READ)
-    mask |= FD_READ;
-  if (m_neededreq & REQ_WRITE)
-    mask |= FD_WRITE;
-  if (m_neededreq & REQ_LOST)
-    mask |= FD_CLOSE;
-  if (m_neededreq & REQ_ACCEPT)
-    mask |= FD_ACCEPT;
-  if (m_neededreq & REQ_CONNECT)
-    mask |= FD_CONNECT;
-
-  GUSISetReference( m_fd ,mask, this ) ;
-  unsigned long flag = 1;
-  ioctl(m_fd, FIONBIO, &flag);
-#endif
-  m_cbkon = TRUE;
-  m_processing = FALSE;
-}
-
-void wxSocketBase::DestroyCallbacks()
-{
-  if (!m_cbkon || !m_handler)
-    return;
-    
-  m_cbkon = FALSE;
-  m_processing = FALSE;
-#if defined(__WXMOTIF__) || defined(__WXXT__)
-  if (m_internal->sock_inputid > 0)
-    XtRemoveInput(m_internal->sock_inputid);
-  m_internal->sock_inputid = 0;
-  if (m_internal->sock_outputid > 0)
-    XtRemoveInput(m_internal->sock_outputid);
-  m_internal->sock_outputid = 0;
-#endif
-#ifdef __WXGTK__
-  if (m_internal->sock_inputid > 0)
-    gdk_input_remove(m_internal->sock_inputid);
-  m_internal->sock_inputid = 0;
-  if (m_internal->sock_outputid > 0)
-    gdk_input_remove(m_internal->sock_outputid);
-  m_internal->sock_outputid = 0;
-#endif
-#ifdef __WINDOWS__
-  WSAAsyncSelect(m_fd, m_handler->GetHWND(), 0, 0);
-#endif
-#ifdef __WXMAC__
-  GUSISetReference( m_fd , 0 , 0 ) ;
-  int bottom = wxMacNetEventsBottom ;
-  while ( wxMacNetEventsTop != bottom )
-  {
-    // set all events that reference this socket to nil
-    if ( wxMacNetEventsReferences[bottom] == (void*) this )
-      wxMacNetEventsReferences[bottom] = NULL ;
-    bottom++ ;
-    if ( bottom == kwxMacNetEventsMax )
-      bottom = 0 ;
+    if (ret > 0)
+      total = ret;

   }
   }

-  SetFlags( m_flags ) ;
-#endif
-}
-
-void wxSocketBase::Notify(bool notify)
-{
-  if (m_notifyme == notify)
-    return;
-  if (notify)
-    SetupCallbacks();

   else
   else

-    DestroyCallbacks();
-  m_notifyme = notify;
-}
-
-void wxSocketBase::OnRequest(wxRequestEvent req_evt)
-{
-  wxRequestNotify req_notif = EventToNotify(req_evt);
-
-  // Mask the current event
-  SetNotify(m_neededreq & ~req_notif);  
- 
-  if (req_evt <= EVT_WRITE && DoRequests(req_evt))
-    return;
-
-  if (m_waitflags & 0xF0) 

   {
   {

-    // Wake up
-    if ((m_waitflags & 0x0F) == req_evt) 
+    bool more = true;
+
+    while (more)

     {
     {

-      m_waitflags = 0x80;
-#ifndef __WXGTK__
-      DestroyCallbacks();
-#endif
-    }
-    return;
-  }
+      if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
+        break;

 
 

-  if (req_evt == EVT_LOST) 
-  {
-    m_connected = FALSE;
-    Close();
-  }
-  if (m_notifyme)
-    OldOnNotify(req_evt);
+      ret = m_socket->Write((const char *)buffer, nbytes);

 
 

-  // Unmask
-  SetNotify(m_neededreq | req_notif);
-}
+      if (ret > 0)
+      {
+        total  += ret;
+        nbytes -= ret;
+        buffer  = (const char *)buffer + ret;
+      }

 
 

-wxSocketEvent::wxSocketEvent(int id)
-  : wxEvent(id)
-{
-  wxEventType type = (wxEventType)wxEVT_SOCKET;
+      // If we got here and wxSOCKET_WAITALL is not set, we can leave
+      // now. Otherwise, wait until we send all the data or until there
+      // is an error.
+      //
+      more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));
+    }
+  }

 
 

-  SetEventType(type);
+  return total;

 }
 
 }
 

-void wxSocketBase::OldOnNotify(wxRequestEvent evt)
+wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes)

 {
 {

-  wxSocketEvent event(m_id);
+  wxUint32 total;
+  bool error;
+  struct
+  {
+    unsigned char sig[4];
+    unsigned char len[4];
+  } msg;

 
 

-  event.SetEventObject(this);
-  event.m_skevt = evt;
-  ProcessEvent(event);
+  // Mask write events
+  m_writing = true;

 
 

-  if (m_cbk)
-    m_cbk(*this, evt, m_cdata);
-}
+  error = true;
+  total = 0;
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);

 
 

-// --------------------------------------------------------------
-// --------- wxSocketBase functions [Callback, CallbackData] ----
-// --------------------------------------------------------------
+  msg.sig[0] = (unsigned char) 0xad;
+  msg.sig[1] = (unsigned char) 0xde;
+  msg.sig[2] = (unsigned char) 0xed;
+  msg.sig[3] = (unsigned char) 0xfe;

 
 

-wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSocketBase::wxSockCbk _cbk)
-{
-  wxSockCbk old_cbk = m_cbk;
+  msg.len[0] = (unsigned char) (nbytes & 0xff);
+  msg.len[1] = (unsigned char) ((nbytes >> 8) & 0xff);
+  msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff);
+  msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff);

 
 

-  m_cbk = _cbk;
-  return old_cbk;
-}
+  if (_Write(&msg, sizeof(msg)) < sizeof(msg))
+    goto exit;

 
 

-char *wxSocketBase::CallbackData(char *cdata_)
-{
-  char *old_cdata = m_cdata;
+  total = _Write(buffer, nbytes);

 
 

-  m_cdata = cdata_;
-  return old_cdata;
-}
+  if (total < nbytes)
+    goto exit;

 
 

-void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
-{
-  SetNextHandler(&h_evt);
-  m_id = id;
-}
+  msg.sig[0] = (unsigned char) 0xed;
+  msg.sig[1] = (unsigned char) 0xfe;
+  msg.sig[2] = (unsigned char) 0xad;
+  msg.sig[3] = (unsigned char) 0xde;
+  msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;

 
 

-// --------------------------------------------------------------
-// --------- wxSocketBase pushback library ----------------------
-// --------------------------------------------------------------
+  if ((_Write(&msg, sizeof(msg))) < sizeof(msg))
+    goto exit;

 
 

-void wxSocketBase::CreatePushbackAfter(const char *buffer, size_t size)
-{
-  char *curr_pos;
+  // everything was OK
+  error = false;

 
 

-  m_unread = (char *) realloc(m_unread, m_unrd_size+size);
-  curr_pos = m_unread + m_unrd_size;
+exit:
+  m_error = error;
+  m_lcount = total;
+  m_writing = false;

 
 

-  memcpy(curr_pos, buffer, size);
-  m_unrd_size += size;
+  return *this;

 }
 
 }
 

-void wxSocketBase::CreatePushbackBefore(const char *buffer, size_t size)
+wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes)

 {
 {

-  char *curr_pos, *new_buf;
-
-  new_buf = (char *) malloc(m_unrd_size+size);
-  curr_pos = new_buf + size;
+  if (nbytes != 0)
+    Pushback(buffer, nbytes);

 
 

-  memcpy(new_buf, buffer, size);
-  memcpy(curr_pos, m_unread, m_unrd_size);
+  m_error = false;
+  m_lcount = nbytes;

 
 

-  free(m_unread);
-  m_unread = new_buf;
-  m_unrd_size += size;
+  return *this;

 }
 
 }
 

-size_t wxSocketBase::GetPushback(char *buffer, size_t size, bool peek)
+wxSocketBase& wxSocketBase::Discard()

 {
 {

-  if (!m_unrd_size)
-    return 0;
+  char *buffer = new char[MAX_DISCARD_SIZE];
+  wxUint32 ret;
+  wxUint32 total = 0;

 
 

-  if (size > m_unrd_size)
-    size = m_unrd_size;
-  memcpy(buffer, m_unread, size);
+  // Mask read events
+  m_reading = true;

 
 

-  if (!peek) {
-    m_unrd_size -= size;
-    if (!m_unrd_size) {
-      free(m_unread);
-      m_unread = NULL;
-    }
+  SetFlags(wxSOCKET_NOWAIT);
+
+  do
+  {
+    ret = _Read(buffer, MAX_DISCARD_SIZE);
+    total += ret;

   }
   }

+  while (ret == MAX_DISCARD_SIZE);

 
 

-  return size;
+  delete[] buffer;
+  m_lcount = total;
+  m_error  = false;
+
+  // Allow read events again
+  m_reading = false;
+
+  return *this;

 }
 
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketBase "multi-thread" core -------------------
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Wait functions
+// --------------------------------------------------------------------------
+
+// All Wait functions poll the socket using GSocket_Select() to
+// check for the specified combination of conditions, until one
+// of these conditions become true, an error occurs, or the
+// timeout elapses. The polling loop calls PROCESS_EVENTS(), so
+// this won't block the GUI.

 
 

-bool wxSocketBase::DoRequests(wxRequestEvent req_flag)
+bool wxSocketBase::_Wait(long seconds,
+                         long milliseconds,
+                         wxSocketEventFlags flags)

 {
 {

-  wxNode *node = req_list[req_flag].First();
-  size_t len;
-  int ret;
+  GSocketEventFlags result;
+  long timeout;

 
 

-  if (!node)
-    return FALSE;
+  // Set this to true to interrupt ongoing waits
+  m_interrupt = false;

 
 

-  SockRequest *req = (SockRequest *)node->Data();
+  // Check for valid socket
+  if (!m_socket)
+    return false;

 
 

-  delete node;
+  // Check for valid timeout value.
+  if (seconds != -1)
+    timeout = seconds * 1000 + milliseconds;
+  else
+    timeout = m_timeout * 1000;
+
+  bool has_event_loop = wxTheApp->GetTraits() ? (wxTheApp->GetTraits()->GetSocketGUIFunctionsTable() ? true : false) : false;
+
+  // Wait in an active polling loop.
+  //
+  // NOTE: We duplicate some of the code in OnRequest, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in OnRequest as well because we
+  //   don't know whether the Wait functions are being used.
+  //
+  // Do this at least once (important if timeout == 0, when
+  // we are just polling). Also, if just polling, do not yield.
+
+  wxDateTime current_time = wxDateTime::UNow();
+  unsigned int time_limit = (current_time.GetTicks() * 1000) + current_time.GetMillisecond() + timeout;
+  bool done = false;
+  bool valid_result = false;
+
+  if (!has_event_loop)
+  {
+    // This is used to avoid a busy loop on wxBase - having a select
+    // timeout of 50 ms per iteration should be enough.
+    if (timeout > 50)
+      m_socket->SetTimeout(50);
+    else
+      m_socket->SetTimeout(timeout);
+  }

 
 

-  switch (req->type) 
+  while (!done)

   {
   {

-  case EVT_READ:
-  case EVT_PEEK:
-    ret = recv(m_fd, req->buffer, req->size,
-              (req->type == EVT_PEEK) ? MSG_PEEK : 0);
-    if (ret < 0) 
+    result = m_socket->Select(flags | GSOCK_LOST_FLAG);
+
+    // Incoming connection (server) or connection established (client)
+    if (result & GSOCK_CONNECTION_FLAG)

     {
     {

-      req->error = errno;
-      req->done = TRUE;
+      m_connected = true;
+      m_establishing = false;
+      valid_result = true;

       break;
     }
       break;
     }

-    len = ret;
-    if ((len < req->size) && (m_flags & WAITALL)) 
+
+    // Data available or output buffer ready
+    if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))

     {
     {

-      req->size -= len;
-      req->nbytes += len;
-      req->buffer += len;
-      req->auto_wakeup->Start(m_timeout*1000, TRUE);
-      req_list[req_flag].Insert(req);
+      valid_result = true;

       break;
     }
       break;
     }

-    req->done = TRUE;
-    req->nbytes += len;
-#ifndef __WXGTK__
-    DestroyCallbacks();
-#endif
-    break;
-  case EVT_WRITE:
-    ret = send(m_fd, req->buffer, req->size, 0);
-    if (ret < 0) 
+
+    // Connection lost
+    if (result & GSOCK_LOST_FLAG)

     {
     {

-      req->error = errno;
-      req->done = TRUE;
+      m_connected = false;
+      m_establishing = false;
+      valid_result = ((flags & GSOCK_LOST_FLAG) != 0);

       break;
     }
       break;
     }

-    len = ret;
-    if ((len < req->size) && (m_flags & WAITALL)) 
+
+    // Wait more?
+    current_time = wxDateTime::UNow();
+    int time_left = time_limit - ((current_time.GetTicks() * 1000) + current_time.GetMillisecond());
+    if ((!timeout) || (time_left <= 0) || (m_interrupt))
+      done = true;
+    else

     {
     {

-      req->size -= len;
-      req->nbytes += len;
-      req->buffer += len;
-      req->auto_wakeup->Start(m_timeout*1000, TRUE);
-      req_list[req_flag].Insert(req);
-      break;
+      if (has_event_loop)
+      {
+          PROCESS_EVENTS();
+      }
+      else
+      {
+        // If there's less than 50 ms left, just call select with that timeout.
+        if (time_left < 50)
+          m_socket->SetTimeout(time_left);
+      }

     }
     }

-    req->done = TRUE;
-    req->nbytes += len;
-#ifndef __WXGTK__
-    DestroyCallbacks();
-#endif
-    break;
-  default:
-    return FALSE;

   }
   }

-  return TRUE;
+
+  // Set timeout back to original value (we overwrote it for polling)
+  if (!has_event_loop)
+    m_socket->SetTimeout(m_timeout*1000);
+
+  return valid_result;

 }
 
 }
 

-void wxSocketBase::WantSpeedBuffer(char *buffer, size_t nbytes,
-                                   wxRequestEvent evt)
+bool wxSocketBase::Wait(long seconds, long milliseconds)

 {
 {

-  int ret = 0;
-
-  switch (evt) 
-  {
-  case EVT_PEEK:
-  case EVT_READ:
-    ret = recv(m_fd, buffer, nbytes,
-               (evt == EVT_PEEK) ? MSG_PEEK : 0);
-    break;
-  case EVT_WRITE:
-    ret = send(m_fd, buffer, nbytes, 0);
-    break;
-  }
-  if (ret < 0) 
-  {
-    m_lcount = 0;
-    m_error = errno;
-  } 
-  else 
-  {
-    m_lcount = ret;
-    m_error = 0;
-  }
+    return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
+                                        GSOCK_OUTPUT_FLAG |
+                                        GSOCK_CONNECTION_FLAG |
+                                        GSOCK_LOST_FLAG);

 }
 
 }
 

-void wxSocketBase::WantBuffer(char *buffer, size_t nbytes,
-            wxRequestEvent evt)
+bool wxSocketBase::WaitForRead(long seconds, long milliseconds)

 {
 {

-  bool buf_timed_out;
+  // Check pushback buffer before entering _Wait
+  if (m_unread)
+    return true;

 
 

-  if (m_fd == INVALID_SOCKET || !m_handler || !m_connected)
-    return;
+  // Note that GSOCK_INPUT_LOST has to be explicitly passed to
+  // _Wait because of the semantics of WaitForRead: a return
+  // value of true means that a GSocket_Read call will return
+  // immediately, not that there is actually data to read.

 
 

-  if (m_flags & SPEED) 
-  {
-    WantSpeedBuffer(buffer, nbytes, evt);
-    return;
-  }
+  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
+                                      GSOCK_LOST_FLAG);
+}

 
 

-  SockRequest *buf = new SockRequest;
-  wxSockWakeUp s_wake(NULL, (int *)&buf_timed_out, (int)TRUE);
-
-  m_wantbuf++;
-  req_list[evt].Append(buf);
-
-  SaveState();
-  SetNotify(REQ_LOST | EventToNotify(evt));
-  SetupCallbacks();
-  buf->buffer = buffer;
-  buf->size = nbytes;
-  buf->done = FALSE;
-  buf->type = evt;
-  buf->nbytes = 0;
-  buf->auto_wakeup = &s_wake;
-  buf->error = 0;
-  buf_timed_out = FALSE;
-
-  s_wake.Start(m_timeout*1000, TRUE);
-  if (m_flags & NOWAIT) 
-  {
-    DoRequests(evt);
-  } 
-  else 
-  {
-    while (!buf->done && !buf_timed_out)
-      PROCESS_EVENTS();
-  }
-  m_wantbuf--;
-  m_lcount = buf->nbytes;
-  if (buf_timed_out)
-    m_error = ETIMEDOUT;
-  else
-    m_error = buf->error;

 
 

-  delete buf;
-  RestoreState();
+bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
+{
+    return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG);

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketServer
-// --------------------------------------------------------------
+bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
+{
+    return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
+}
+
+// --------------------------------------------------------------------------
+// Miscellaneous
+// --------------------------------------------------------------------------
+
+//
+// Get local or peer address
+//

 
 

-wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
-             wxSockFlags flags) :
-  wxSocketBase(flags, SOCK_SERVER)
+bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const

 {
 {

-  m_fd = socket(addr_man.GetFamily(), SOCK_STREAM, 0);
+  GAddress *peer;

 
 

-  if (m_fd == INVALID_SOCKET)
-    return;
+  if (!m_socket)
+    return false;

 
 

-  int flag = 1;
-  setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(int));
+  peer = m_socket->GetPeer();

 
 

-  struct sockaddr *myaddr;
-  size_t len;
+    // copying a null address would just trigger an assert anyway

 
 

-  addr_man.Build(myaddr, len);
-  if (bind(m_fd, myaddr, addr_man.SockAddrLen()) < 0)
-    return;
+  if (!peer)
+    return false;

 
 

-  if (listen(m_fd, 5) < 0) {
-    m_fd = INVALID_SOCKET;
-    return;
-  }
-}
+  addr_man.SetAddress(peer);
+  GAddress_destroy(peer);

 
 

-// --------------------------------------------------------------
-// wxSocketServer Accept
-// --------------------------------------------------------------
+  return true;
+}

 
 

-bool wxSocketServer::AcceptWith(wxSocketBase& sock)
+bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const

 {
 {

-  int fd2;
+    GAddress *local;

 
 

-  if ((fd2 = accept(m_fd, 0, 0)) < 0)
-    return FALSE;
+    if (!m_socket)
+        return false;

 
 

-  struct linger linger;
-  linger.l_onoff = 0;
-  linger.l_linger = 1;
+    local = m_socket->GetLocal();
+    addr_man.SetAddress(local);
+    GAddress_destroy(local);

 
 

-  setsockopt(fd2, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
+    return true;
+}

 
 

-  int flag = 0;
-  setsockopt(fd2, SOL_SOCKET, SO_KEEPALIVE, (char*)&flag, sizeof(int));
+//
+// Save and restore socket state
+//

 
 

-  if (!(sock.m_flags & SPEED)) 
-  {
-    unsigned long flag2 = 1;
-    ioctl(fd2, FIONBIO, &flag2);
-  }
+void wxSocketBase::SaveState()
+{
+    wxSocketState *state;

 
 

-  sock.m_type = SOCK_INTERNAL;
-  sock.m_fd = fd2;
-  sock.m_connected = TRUE;
+    state = new wxSocketState();

 
 

-  return TRUE;
+    state->m_flags      = m_flags;
+    state->m_notify     = m_notify;
+    state->m_eventmask  = m_eventmask;
+    state->m_clientData = m_clientData;
+
+    m_states.Append(state);

 }
 
 }
 

-wxSocketBase *wxSocketServer::Accept()
+void wxSocketBase::RestoreState()

 {
 {

-  wxSocketBase* sock = new wxSocketBase();
+    wxList::compatibility_iterator node;
+    wxSocketState *state;

 
 

-  sock->SetFlags((wxSockFlags)m_flags);
+    node = m_states.GetLast();
+    if (!node)
+        return;

 
 

-  if (!AcceptWith(*sock))
-    return NULL;
+    state = (wxSocketState *)node->GetData();

 
 

-  if (m_handler)
-    m_handler->Register(sock);
+    m_flags      = state->m_flags;
+    m_notify     = state->m_notify;
+    m_eventmask  = state->m_eventmask;
+    m_clientData = state->m_clientData;

 
 

-  return sock;
+    m_states.Erase(node);
+    delete state;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketServer callbacks
-// --------------------------------------------------------------
+//
+// Timeout and flags
+//

 
 

-void wxSocketServer::OnRequest(wxRequestEvent evt)
+void wxSocketBase::SetTimeout(long seconds)

 {
 {

-  if (evt == EVT_ACCEPT) 
-  {
-    OldOnNotify(EVT_ACCEPT);
-  }
-}
-
-// --------------------------------------------------------------
-// wxSocketClient
-// --------------------------------------------------------------
+    m_timeout = seconds;

 
 

-// --------- wxSocketClient CONSTRUCTOR -------------------------
-// --------------------------------------------------------------
-wxSocketClient::wxSocketClient(wxSockFlags _flags) :
-  wxSocketBase(_flags, SOCK_CLIENT)
-{
+    if (m_socket)
+        m_socket->SetTimeout(m_timeout * 1000);

 }
 
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketClient DESTRUCTOR --------------------------
-// --------------------------------------------------------------
-wxSocketClient::~wxSocketClient()
+void wxSocketBase::SetFlags(wxSocketFlags flags)

 {
 {

+    m_flags = flags;

 }
 
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketClient Connect functions -------------------
-// --------------------------------------------------------------
-bool wxSocketClient::Connect(wxSockAddress& addr_man, bool WXUNUSED(wait) )
-{
-  struct linger linger;

 
 

-  if (IsConnected())
-    Close();
+// --------------------------------------------------------------------------
+// Event handling
+// --------------------------------------------------------------------------

 
 

-  m_fd = socket(addr_man.GetFamily(), SOCK_STREAM, 0);
+// A note on how events are processed, which is probably the most
+// difficult thing to get working right while keeping the same API
+// and functionality for all platforms.
+//
+// When GSocket detects an event, it calls wx_socket_callback, which in
+// turn just calls wxSocketBase::OnRequest in the corresponding wxSocket
+// object. OnRequest does some housekeeping, and if the event is to be
+// propagated to the user, it creates a new wxSocketEvent object and
+// posts it. The event is not processed immediately, but delayed with
+// AddPendingEvent instead. This is necessary in order to decouple the
+// event processing from wx_socket_callback; otherwise, subsequent IO
+// calls made from the user event handler would fail, as gtk callbacks
+// are not reentrant.
+//
+// Note that, unlike events, user callbacks (now deprecated) are _not_
+// decoupled from wx_socket_callback and thus they suffer from a variety
+// of problems. Avoid them where possible and use events instead.

 
 

-  if (m_fd < 0)
-    return FALSE;
+extern "C"
+void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
+                                    GSocketEvent notification,
+                                    char *cdata)
+{
+    wxSocketBase *sckobj = (wxSocketBase *)cdata;

 
 

-  m_connected = FALSE;
+    sckobj->OnRequest((wxSocketNotify) notification);
+}

 
 

-  linger.l_onoff = 1;
-  linger.l_linger = 5;
-  setsockopt(m_fd, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
+void wxSocketBase::OnRequest(wxSocketNotify notification)
+{
+  // NOTE: We duplicate some of the code in _Wait, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in _Wait as well because we don't
+  //   know whether the Wait functions are being used.

 
 

-  // Stay in touch with the state of things...
+  switch(notification)
+  {
+    case wxSOCKET_CONNECTION:
+      m_establishing = false;
+      m_connected = true;
+      break;

 
 

-  unsigned long flag = 1;
-  setsockopt(m_fd, SOL_SOCKET, SO_KEEPALIVE, (char*)&flag, sizeof(int));
+    // If we are in the middle of a R/W operation, do not
+    // propagate events to users. Also, filter 'late' events
+    // which are no longer valid.

 
 

-  // Disable the nagle algorithm, which delays sends till the
-  // buffer is full (or a certain time period has passed?)...
+    case wxSOCKET_INPUT:
+      if (m_reading || !m_socket->Select(GSOCK_INPUT_FLAG))
+        return;
+      break;

 
 

-#if defined(__WINDOWS__) || (defined(IPPROTO_TCP) && defined(TCP_NODELAY))
-  flag = 1;
-  setsockopt(m_fd, IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(int));
-#endif
+    case wxSOCKET_OUTPUT:
+      if (m_writing || !m_socket->Select(GSOCK_OUTPUT_FLAG))
+        return;
+      break;

 
 

-  struct sockaddr *remote;
-  size_t len;
+    case wxSOCKET_LOST:
+      m_connected = false;
+      m_establishing = false;
+      break;

 
 

-  addr_man.Build(remote, len);
+    default:
+      break;
+  }

 
 

-  if (connect(m_fd, remote, len) != 0)
-    return FALSE;
+  // Schedule the event

 
 

-  if (!(m_flags & SPEED)) 
+  wxSocketEventFlags flag = 0;
+  wxUnusedVar(flag);
+  switch (notification)

   {
   {

-    flag = 1;
-    ioctl(m_fd, FIONBIO, &flag);
+    case GSOCK_INPUT:      flag = GSOCK_INPUT_FLAG; break;
+    case GSOCK_OUTPUT:     flag = GSOCK_OUTPUT_FLAG; break;
+    case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break;
+    case GSOCK_LOST:       flag = GSOCK_LOST_FLAG; break;
+    default:
+      wxLogWarning(_("wxSocket: unknown event!."));
+      return;

   }
 
   }
 

-  Notify(TRUE);
+  if (((m_eventmask & flag) == flag) && m_notify)
+  {
+    if (m_handler)
+    {
+      wxSocketEvent event(m_id);
+      event.m_event      = notification;
+      event.m_clientData = m_clientData;
+      event.SetEventObject(this);

 
 

-  m_connected = TRUE;
-  return TRUE;
+      m_handler->AddPendingEvent(event);
+    }
+  }

 }
 
 }
 

-bool wxSocketClient::WaitOnConnect(long seconds, long microseconds)
+void wxSocketBase::Notify(bool notify)

 {
 {

-  int ret = _Wait(seconds, microseconds, REQ_CONNECT | REQ_LOST);
-
-  if (ret)
-    m_connected = TRUE;
+    m_notify = notify;
+}

 
 

-  return m_connected;
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+    m_eventmask = flags;

 }
 
 }
 

-void wxSocketClient::OnRequest(wxRequestEvent evt)
+void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)

 {
 {

-  if (evt == EVT_CONNECT) 
-  {
-    if (m_connected) 
-    {
-#ifndef __WXGTK__
-      SetNotify(m_neededreq & ~REQ_CONNECT);
-#endif
-      return;
-    }
-    m_waitflags = 0x40;
-    m_connected = TRUE;
-    OldOnNotify(EVT_CONNECT);
-#ifndef __WXGTK__
-    DestroyCallbacks();
-#endif
-    return;
-  }
-  wxSocketBase::OnRequest(evt);
+    m_handler = &handler;
+    m_id      = id;

 }
 
 }
 

-/////////////////////////////////////////////////////////////////
-// wxSocketHandler ///////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
+// --------------------------------------------------------------------------
+// Pushback buffer
+// --------------------------------------------------------------------------

 
 

-wxSocketHandler *wxSocketHandler::master = NULL;
-#if defined(__WINDOWS__)
-static int win_initialized = 0;
-#endif
+void wxSocketBase::Pushback(const void *buffer, wxUint32 size)
+{
+  if (!size) return;

 
 

-// --------------------------------------------------------------
-// --------- wxSocketHandler CONSTRUCTOR ------------------------
-// --------------------------------------------------------------
-#ifdef __WXMAC__
+  if (m_unread == NULL)
+    m_unread = malloc(size);
+  else
+  {
+    void *tmp;

 
 

-extern "C" int updatestatus(int s) ;
+    tmp = malloc(m_unrd_size + size);
+    memcpy((char *)tmp + size, m_unread, m_unrd_size);
+    free(m_unread);

 
 

-void wxMacSocketOnRequestProc( void *refcon , short event )
-{
-  if ( refcon )
-  {
-    wxSocketBase *sock = (wxSocketBase *) refcon ;  
-    
-    wxSocketBase::wxRequestEvent sk_req;
-    
-    int canRead ;
-    int canWrite ;
-    int exception ;
-    
-    switch (event) {
-    case FD_READ:
-      sk_req = wxSocketBase::EVT_READ;
-     sock->OnRequest(sk_req);
-      break;
-    case FD_WRITE:
-      sk_req = wxSocketBase::EVT_WRITE;
-      sock->OnRequest(sk_req);
-      break;
-    case FD_CLOSE:
-      sk_req = wxSocketBase::EVT_LOST;
-     sock->OnRequest(sk_req);
-      break;
-    case FD_ACCEPT:
-      sk_req = wxSocketBase::EVT_ACCEPT;
-      sock->OnRequest(sk_req);
-      break;
-    case FD_CONNECT:
-      sk_req = wxSocketBase::EVT_CONNECT;
-      sock->OnRequest(sk_req);
-      break;
-    case FD_READY :
-      break ;
-    }
-    updatestatus ( sock->m_fd ) ;
+    m_unread = tmp;

   }
   }

-}

 
 

-void wxMacSocketHandlerProc( void *refcon , short event )
-{
-  wxMacNetEventsReferences[wxMacNetEventsTop] = refcon ;
-  wxMacNetEventsEvents[wxMacNetEventsTop] = event ;
-
-  // clumsy construct in order to never have a incorrect wxMacNetEventsTop (above limits)
+  m_unrd_size += size;

 
 

-  if ( wxMacNetEventsTop + 1 == kwxMacNetEventsMax )
-    wxMacNetEventsTop = 0 ;
-  else
-    wxMacNetEventsTop++ ;
+  memcpy(m_unread, buffer, size);

 }
 
 }
 

-#endif
-#ifdef __WINDOWS__
+wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)
+{
+  if (!m_unrd_size)
+    return 0;

 
 

-extern char wxPanelClassName[];
+  if (size > (m_unrd_size-m_unrd_cur))
+    size = m_unrd_size-m_unrd_cur;

 
 

-LRESULT APIENTRY _EXPORT wxSocketHandlerWndProc(HWND hWnd, UINT message,
-   WPARAM wParam, LPARAM lParam)
-{
-  if(message==WM_DESTROY)
+  memcpy(buffer, (char *)m_unread + m_unrd_cur, size);
+
+  if (!peek)

   {
   {

-    ::SetWindowLong(hWnd, GWL_WNDPROC, (LONG) DefWindowProc);
-    return DefWindowProc(hWnd, message, wParam, lParam);
-  }
-  wxSocketHandler *h_sock = (wxSocketHandler *)GetWindowLong(hWnd, GWL_USERDATA);
-  wxNode *node = h_sock->smsg_list->Find(message);
-  wxSocketBase *sock;
-  wxSocketBase::wxRequestEvent sk_req;
-  UINT event = WSAGETSELECTEVENT(lParam);
-
-  if (!node)
-    return DefWindowProc(hWnd, message, wParam, lParam);
-
-  sock = (wxSocketBase *)node->Data();
-
-  switch (event) {
-  case FD_READ:
-    sk_req = wxSocketBase::EVT_READ;
-    break;
-  case FD_WRITE:
-    sk_req = wxSocketBase::EVT_WRITE;
-    break;
-  case FD_CLOSE:
-    sk_req = wxSocketBase::EVT_LOST;
-    break;
-  case FD_ACCEPT:
-    sk_req = wxSocketBase::EVT_ACCEPT;
-    break;
-  case FD_CONNECT:
-    sk_req = wxSocketBase::EVT_CONNECT;
-    break;
+    m_unrd_cur += size;
+    if (m_unrd_size == m_unrd_cur)
+    {
+      free(m_unread);
+      m_unread = NULL;
+      m_unrd_size = 0;
+      m_unrd_cur  = 0;
+    }

   }
   }

-  sock->OnRequest(sk_req);

 
 

-  return (LRESULT)0;
+  return size;

 }
 
 }
 

-FARPROC wxSocketSubClassProc = NULL;

 
 

-#endif
+// ==========================================================================
+// wxSocketServer
+// ==========================================================================

 
 

-wxSocketHandler::wxSocketHandler()
+// --------------------------------------------------------------------------
+// Ctor
+// --------------------------------------------------------------------------
+
+wxSocketServer::wxSocketServer(const wxSockAddress& addr_man,
+                               wxSocketFlags flags)
+              : wxSocketBase(flags, wxSOCKET_SERVER)

 {
 {

-#if defined(__WINDOWS__)
-  if (!win_initialized) 
-  {
-    WSADATA wsaData;
+    wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );

 
 

-    WSAStartup((1 << 8) | 1, &wsaData);
-    win_initialized = 1;
-  }
-  internal = new wxSockHandlerInternal;
-  internal->sockWin = ::CreateWindow(wxPanelClassName, NULL, 0,
-    0, 0, 0, 0, NULL, (HMENU) NULL,
-    wxhInstance, 0);
-
-  // Subclass the window
-  if (!wxSocketSubClassProc)
-    wxSocketSubClassProc = MakeProcInstance((FARPROC) wxSocketHandlerWndProc, wxhInstance);
-  ::SetWindowLong(internal->sockWin, GWL_WNDPROC, (LONG) wxSocketSubClassProc);
-  ::SetWindowLong(internal->sockWin, GWL_USERDATA, (LONG) this);
-
-  internal->firstAvailableMsg = 5000;
-  smsg_list = new wxList(wxKEY_INTEGER);
-#endif
+    m_socket = GSocket_new();
+
+    if (!m_socket)
+    {
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") );
+        return;
+    }

 
 

-  socks = new wxList;
+        // Setup the socket as server

 
 

-#ifndef __WINDOWS__
-  signal(SIGPIPE, SIG_IGN);
-#endif
+    m_socket->SetLocal(addr_man.GetAddress());
+
+    if (GetFlags() & wxSOCKET_REUSEADDR) {
+        m_socket->SetReusable();
+    }
+
+    if (m_socket->SetServer() != GSOCK_NOERROR)
+    {
+        delete m_socket;
+        m_socket = NULL;
+
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") );
+        return;
+    }
+
+    m_socket->SetTimeout(m_timeout * 1000);
+    m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                  GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                  wx_socket_callback, (char *)this);

 }
 
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketHandler DESTRUCTOR -------------------------
-// --------------------------------------------------------------
-wxSocketHandler::~wxSocketHandler()
+// --------------------------------------------------------------------------
+// Accept
+// --------------------------------------------------------------------------
+
+bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)

 {
 {

-  wxNode *next_node, *node = socks->First();
+  GSocket *child_socket;

 
 

-  while (node) 
-  {
-    wxSocketBase* sock = (wxSocketBase*)node->Data();
+  if (!m_socket)
+    return false;

 
 

-    delete sock;
-    next_node = node->Next();
-    delete node;
-    node = next_node;
-  }
+  // If wait == false, then the call should be nonblocking.
+  // When we are finished, we put the socket to blocking mode
+  // again.

 
 

-  delete socks;
+  if (!wait)
+    m_socket->SetNonBlocking(1);

 
 

-#ifdef __WINDOWS__
-  delete smsg_list;
+  child_socket = m_socket->WaitConnection();

 
 

-  ::DestroyWindow(internal->sockWin);
-  WSACleanup();
-  win_initialized = 0;
+  if (!wait)
+    m_socket->SetNonBlocking(0);

 
 

-  delete internal;
-#endif
-}
+  if (!child_socket)
+    return false;

 
 

-// --------------------------------------------------------------
-// --------- wxSocketHandler registering functions --------------
-// --------------------------------------------------------------
+  sock.m_type = wxSOCKET_BASE;
+  sock.m_socket = child_socket;
+  sock.m_connected = true;

 
 

-void wxSocketHandler::Register(wxSocketBase* sock)
-{
-  wxNode *node;
+  sock.m_socket->SetTimeout(sock.m_timeout * 1000);
+  sock.m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                     GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                     wx_socket_callback, (char *)&sock);

 
 

-  for (node = socks->First(); node != NULL; node = node->Next()) 
-  {
-    wxSocketBase* s = (wxSocketBase*)node->Data();
+  return true;
+}

 
 

-    if (s == sock)
-      return;
-  }
+wxSocketBase *wxSocketServer::Accept(bool wait)
+{
+  wxSocketBase* sock = new wxSocketBase();
+
+  sock->SetFlags(m_flags);

 
 

-  if (sock) 
+  if (!AcceptWith(*sock, wait))

   {
   {

-    socks->Append(sock);
-    sock->SetHandler(this);
-    sock->SetupCallbacks();
+    sock->Destroy();
+    sock = NULL;

   }
   }

+
+  return sock;

 }
 
 }
 

-void wxSocketHandler::UnRegister(wxSocketBase* sock)
+bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)

 {
 {

-  wxNode *node;
+    return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
+}

 
 

-  for (node = socks->First(); node; node = node->Next()) 
-  {
-    wxSocketBase* s = (wxSocketBase*)node->Data();
+bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
+{
+    wxASSERT_MSG( m_socket, _T("Socket not initialised") );

 
 

-    if (s == sock) 
+    if (m_socket->GetSockOpt(level, optname, optval, optlen)
+        != GSOCK_NOERROR)

     {
     {

-      delete node;
-      sock->DestroyCallbacks();
-      sock->SetHandler(NULL);
-      return;
+        return false;

     }
     }

-  }
+    return true;

 }
 
 }
 

-unsigned long wxSocketHandler::Count() const
+bool wxSocketBase::SetOption(int level, int optname, const void *optval,
+                              int optlen)

 {
 {

-  return socks->Number();
+    wxASSERT_MSG( m_socket, _T("Socket not initialised") );
+
+    if (m_socket->SetSockOpt(level, optname, optval, optlen)
+        != GSOCK_NOERROR)
+    {
+        return false;
+    }
+    return true;

 }
 
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketHandler "big" wait functions ---------------
-// --------------------------------------------------------------
-void handler_cbk(wxSocketBase& sock,
-     wxSocketBase::wxRequestEvent WXUNUSED(flags),
-     char *cdata)
+bool wxSocketBase::SetLocal(wxIPV4address& local)

 {
 {

-  int *a_wait = (int *)cdata;
+  GAddress* la = local.GetAddress();
+
+  // If the address is valid, save it for use when we call Connect
+  if (la && la->m_addr)
+  {
+    m_localAddress = local;
+
+    return true;
+  }

 
 

-  (*a_wait)++;
-  sock.Notify(FALSE);
+  return false;

 }
 
 }
 

-int wxSocketHandler::Wait(long seconds, long microseconds)
-{
-  int i;
-  int on_wait;
-  wxSockWakeUp s_wake(NULL, &on_wait, -2);
-  wxNode *node;
+// ==========================================================================
+// wxSocketClient
+// ==========================================================================

 
 

-  for (node = socks->First(), i=0; node; node = node->Next(), i++) 
-  {
-    wxSocketBase *sock = (wxSocketBase *)node->Data();
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------

 
 

-    sock->SaveState();
+wxSocketClient::wxSocketClient(wxSocketFlags flags)
+              : wxSocketBase(flags, wxSOCKET_CLIENT)
+{
+}

 
 

-    sock->SetupCallbacks();
+wxSocketClient::~wxSocketClient()
+{
+}

 
 

-    sock->Callback(handler_cbk);
-    sock->CallbackData((char *)&on_wait);
-  }
-  on_wait = 0;
-  if (seconds != -1)
-    s_wake.Start((seconds*1000) + (microseconds/1000), TRUE);
+// --------------------------------------------------------------------------
+// Connect
+// --------------------------------------------------------------------------

 
 

-  while (!on_wait)
-    PROCESS_EVENTS();
+bool wxSocketClient::DoConnect(wxSockAddress& addr_man, wxSockAddress* local, bool wait)
+{
+  GSocketError err;

 
 

-  for (node = socks->First(), i=0; node; node = node->Next(), i++) 
+  if (m_socket)

   {
   {

-    wxSocketBase *sock = (wxSocketBase *)node->Data();
-
-    sock->RestoreState();
+    // Shutdown and destroy the socket
+    Close();
+    delete m_socket;

   }
 
   }
 

-  if (on_wait == -2)
-    return 0;
+  m_socket = GSocket_new();
+  m_connected = false;
+  m_establishing = false;

 
 

-  return on_wait;
-}
+  if (!m_socket)
+    return false;

 
 

-void wxSocketHandler::YieldSock()
-{
-  wxNode *node;
+  m_socket->SetTimeout(m_timeout * 1000);
+  m_socket->SetCallback(GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                wx_socket_callback, (char *)this);

 
 

-  for (node = socks->First(); node; node = node->Next() ) 
+  // If wait == false, then the call should be nonblocking.
+  // When we are finished, we put the socket to blocking mode
+  // again.
+
+  if (!wait)
+    m_socket->SetNonBlocking(1);
+
+  // Reuse makes sense for clients too, if we are trying to rebind to the same port
+  if (GetFlags() & wxSOCKET_REUSEADDR)

   {
   {

-    wxSocketBase *sock = (wxSocketBase *)node->Data();
+    m_socket->SetReusable();
+  }

 
 

-    sock->SaveState();
+  // If no local address was passed and one has been set, use the one that was Set
+  if (!local && m_localAddress.GetAddress())
+  {
+    local = &m_localAddress;
+  }

 
 

-    sock->SetFlags(wxSocketBase::SPEED);
-    if (sock->IsData())
-      sock->DoRequests(wxSocketBase::EVT_READ);
-    sock->DoRequests(wxSocketBase::EVT_WRITE);
+  // Bind to the local IP address and port, when provided
+  if (local)
+  {
+    GAddress* la = local->GetAddress();

 
 

-    sock->RestoreState();
+    if (la && la->m_addr)
+      m_socket->SetLocal(la);

   }
   }

-}

 
 

-// --------------------------------------------------------------
-// --------- wxSocketHandler: create and register the socket ----
-// --------------------------------------------------------------
-wxSocketServer *wxSocketHandler::CreateServer(wxSockAddress& addr,
-                wxSocketBase::wxSockFlags flags)
-{
-  wxSocketServer *serv = new wxSocketServer(addr, flags);
+  m_socket->SetPeer(addr_man.GetAddress());
+  err = m_socket->Connect(GSOCK_STREAMED);

 
 

-  Register(serv);
-  return serv;
-}
+  if (!wait)
+    m_socket->SetNonBlocking(0);

 
 

-wxSocketClient *wxSocketHandler::CreateClient(wxSocketBase::wxSockFlags flags)
-{
-  wxSocketClient *client = new wxSocketClient(flags);
+  if (err != GSOCK_NOERROR)
+  {
+    if (err == GSOCK_WOULDBLOCK)
+      m_establishing = true;

 
 

-  Register(client);
-  return client;
-}
+    return false;
+  }

 
 

-#ifdef __WINDOWS__
-// --------------------------------------------------------------
-// --------- wxSocketHandler: Windows specific methods ----------
-// --------------------------------------------------------------
+  m_connected = true;
+  return true;
+}

 
 

-UINT wxSocketHandler::NewMessage(wxSocketBase *sock)
+bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)

 {
 {

-  internal->firstAvailableMsg++;
-  smsg_list->Append(internal->firstAvailableMsg, sock);
-  return internal->firstAvailableMsg;
+    return (DoConnect(addr_man, NULL, wait));

 }
 
 }
 

-void wxSocketHandler::DestroyMessage(UINT msg)
+bool wxSocketClient::Connect(wxSockAddress& addr_man, wxSockAddress& local, bool wait)

 {
 {

-  wxNode *node = smsg_list->Find(msg);
-  delete node;
+    return (DoConnect(addr_man, &local, wait));

 }
 
 }
 

-HWND wxSocketHandler::GetHWND() const
+bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)

 {
 {

-  return internal->sockWin;
+    if (m_connected)                      // Already connected
+        return true;
+
+    if (!m_establishing || !m_socket)     // No connection in progress
+        return false;
+
+    return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG |
+                                        GSOCK_LOST_FLAG);

 }
 
 }
 

-#endif
+// ==========================================================================
+// wxDatagramSocket
+// ==========================================================================
+
+/* NOTE: experimental stuff - might change */

 
 

-bool wxSocketModule::OnInit() 
+wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr,
+                                    wxSocketFlags flags )
+                : wxSocketBase( flags, wxSOCKET_DATAGRAM )

 {
 {

-  wxSocketHandler::master = new wxSocketHandler();
-  return TRUE;
+    // Create the socket
+    m_socket = GSocket_new();
+
+    if(!m_socket)
+    {
+        wxFAIL_MSG( _T("datagram socket not new'd") );
+        return;
+    }
+    // Setup the socket as non connection oriented
+    m_socket->SetLocal(addr.GetAddress());
+    if( m_socket->SetNonOriented() != GSOCK_NOERROR )
+    {
+        delete m_socket;
+        m_socket = NULL;
+        return;
+    }
+
+    // Initialize all stuff
+    m_connected = false;
+    m_establishing = false;
+    m_socket->SetTimeout( m_timeout );
+    m_socket->SetCallback( GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                           GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                           wx_socket_callback, (char*)this );

 }
 
 }
 

-void wxSocketModule::OnExit() 
+wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
+                                              void* buf,
+                                              wxUint32 nBytes )

 {
 {

-  delete wxSocketHandler::master;
-  wxSocketHandler::master = NULL;
+    Read(buf, nBytes);
+    GetPeer(addr);
+    return (*this);

 }
 
 }
 

-#ifdef __WXMAC__
-void wxMacProcessSocketEvents() ;
-void wxMacProcessEvents()
+wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr,
+                                            const void* buf,
+                                            wxUint32 nBytes )

 {
 {

-  wxMacProcessSocketEvents() ;
-   (*GUSISpin)(SP_MISC, 0) ;
+    wxASSERT_MSG( m_socket, _T("Socket not initialised") );
+
+    m_socket->SetPeer(addr.GetAddress());
+    Write(buf, nBytes);
+    return (*this);

 }
 
 }
 

-void wxMacProcessSocketEvents()
+// ==========================================================================
+// wxSocketModule
+// ==========================================================================
+
+class wxSocketModule : public wxModule

 {
 {

-  while ( wxMacNetEventsTop != wxMacNetEventsBottom )
-  {
-    // consume event at wxMacNetEventsBottom
-    wxMacSocketOnRequestProc(wxMacNetEventsReferences[wxMacNetEventsBottom] , wxMacNetEventsEvents[wxMacNetEventsBottom]  ) ;
-    wxMacNetEventsBottom++ ;
-    if ( wxMacNetEventsBottom == kwxMacNetEventsMax )
-      wxMacNetEventsBottom = 0 ;
-  }
-}
-#endif
+public:
+    virtual bool OnInit()
+    {
+        // wxSocketBase will call GSocket_Init() itself when/if needed
+        return true;
+    }
+
+    virtual void OnExit()
+    {
+        if ( wxSocketBase::IsInitialized() )
+            wxSocketBase::Shutdown();
+    }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxSocketModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)

 
 #endif
 
 #endif

-  // __WXSTUBS__
+  // wxUSE_SOCKETS