mimetype.cpp/.h split into unix,mac,msw

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

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index e4b086669bb1bc3b730f8cb3a7aea6988c5ba362..c83644159e6a4f26bb59e9597cad4904c8c4b714 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -1,13 +1,15 @@
-////////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////

 // Name:       socket.cpp
 // Purpose:    Socket handler classes
 // Name:       socket.cpp
 // Purpose:    Socket handler classes

-// Authors:    Guilhem Lavaux
+// Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia

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

-// Updated:    July 1999
+// Updated:    September 1999

 // Copyright:  (C) 1999, 1998, 1997, Guilhem Lavaux
 // Copyright:  (C) 1999, 1998, 1997, Guilhem Lavaux

+//             (C) 1999, Guillermo Rodriguez Garcia

 // RCS_ID:     $Id$
 // License:    see wxWindows license
 // RCS_ID:     $Id$
 // License:    see wxWindows license

-////////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////
+

 #ifdef __GNUG__
 #pragma implementation "socket.h"
 #endif
 #ifdef __GNUG__
 #pragma implementation "socket.h"
 #endif


@@ -24,410 +26,534 @@
 /////////////////////////////////////////////////////////////////////////////
 // wxWindows headers
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////
 // wxWindows headers
 /////////////////////////////////////////////////////////////////////////////

-#include <wx/defs.h>
-#include <wx/object.h>
-#include <wx/string.h>
-#include <wx/timer.h>
-#include <wx/utils.h>
-#include <wx/log.h>

 
 

-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
+#include "wx/app.h"
+#include "wx/defs.h"
+#include "wx/object.h"
+#include "wx/string.h"
+#include "wx/timer.h"
+#include "wx/utils.h"
+#include "wx/module.h"
+#include "wx/log.h"
+#include "wx/intl.h"

 
 /////////////////////////////////////////////////////////////////////////////
 // wxSocket headers
 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 // wxSocket headers
 /////////////////////////////////////////////////////////////////////////////

-#include <wx/module.h>
-#include <wx/sckaddr.h>
-#include <wx/socket.h>
+
+#include "wx/sckaddr.h"
+#include "wx/socket.h"
+
+// discard buffer
+#define MAX_DISCARD_SIZE (10 * 1024)
+
+// what to do within waits
+#define PROCESS_EVENTS() wxYield()
+
+// use wxPostEvent or not
+#define EXPERIMENTAL_USE_POST 1
+

 
 // --------------------------------------------------------------
 // ClassInfos
 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 // 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(wxDatagramSocket, wxSocketBase)

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

-#endif

 
 

-class wxSocketState : public wxObject {
+class wxSocketState : public wxObject
+{

 public:
 public:

-  bool notify_state;
-  GSocketEventFlags evt_notify_state;
-  wxSocketBase::wxSockFlags socket_flags;
-  wxSocketBase::wxSockCbk c_callback;
-  char *c_callback_data;
+  bool                     m_notify_state;
+  GSocketEventFlags        m_neededreq;
+  wxSockFlags              m_flags;
+  wxSocketBase::wxSockCbk  m_cbk;
+  char                    *m_cdata;

 
 public:
   wxSocketState() : wxObject() {}
 };
 
 // --------------------------------------------------------------
 
 public:
   wxSocketState() : wxObject() {}
 };
 
 // --------------------------------------------------------------

-// --------- wxSocketBase CONSTRUCTOR ---------------------------
+// wxSocketBase ctor and dtor

 // --------------------------------------------------------------
 // --------------------------------------------------------------

-wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
-         wxSocketBase::wxSockType _type) :
+
+wxSocketBase::wxSocketBase(wxSockFlags _flags, wxSockType _type) :

   wxEvtHandler(),
   wxEvtHandler(),

-  m_socket(NULL), m_flags(_flags), m_type(_type),
-  m_neededreq(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG),
-  m_lcount(0), m_timeout(3600),
+  m_socket(NULL), m_evt_handler(NULL), m_id(-1),
+  m_flags(_flags), m_type(_type),
+  m_neededreq(0), m_notify_state(FALSE),
+  m_connected(FALSE), m_establishing(FALSE),
+  m_reading(FALSE), m_writing(FALSE),
+  m_error(FALSE), m_lcount(0), m_timeout(600), m_states(),

   m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
   m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),

-  m_cbk(NULL), m_cdata(NULL),
-  m_connected(FALSE), m_notify_state(FALSE), m_id(-1),
-  m_defering(NO_DEFER),
-  m_states()
+  m_cbk(NULL), m_cdata(NULL)

 {
 }
 
 wxSocketBase::wxSocketBase() :
   wxEvtHandler(),
 {
 }
 
 wxSocketBase::wxSocketBase() :
   wxEvtHandler(),

-  m_socket(NULL), m_flags(SPEED | WAITALL), m_type(SOCK_UNINIT),
-  m_neededreq(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG),
-  m_lcount(0), m_timeout(3600),
+  m_socket(NULL), m_evt_handler(NULL), m_id(-1),
+  m_flags(NONE), m_type(SOCK_UNINIT),
+  m_neededreq(0), m_notify_state(FALSE),
+  m_connected(FALSE), m_establishing(FALSE),
+  m_reading(FALSE), m_writing(FALSE),
+  m_error(FALSE), m_lcount(0), m_timeout(600), m_states(),

   m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
   m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),

-  m_cbk(NULL), m_cdata(NULL),
-  m_connected(FALSE), m_notify_state(FALSE), m_id(-1),
-  m_defering(NO_DEFER),
-  m_states()
+  m_cbk(NULL), m_cdata(NULL)

 {
 }
 
 {
 }
 

-// --------------------------------------------------------------
-// wxSocketBase destructor
-// --------------------------------------------------------------
-

 wxSocketBase::~wxSocketBase()
 {
   if (m_unread)
     free(m_unread);
 
 wxSocketBase::~wxSocketBase()
 {
   if (m_unread)
     free(m_unread);
 

-  // At last, close the file descriptor.
+  // Shutdown and close the socket

   Close();
 
   Close();
 

+  // Destroy the GSocket object

   if (m_socket)
     GSocket_destroy(m_socket);
 }
 
 bool wxSocketBase::Close()
 {
   if (m_socket)
     GSocket_destroy(m_socket);
 }
 
 bool wxSocketBase::Close()
 {

+  // Interrupt pending waits
+  InterruptAllWaits();
+

   if (m_socket)
   {
   if (m_socket)
   {

-    if (m_notify_state == TRUE)
-      Notify(FALSE);
+    // Disable callbacks
+    GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                    GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);

 
 

-    // Shutdown the connection.
+    // Shutdown the connection

     GSocket_Shutdown(m_socket);
     m_connected = FALSE;
     GSocket_Shutdown(m_socket);
     m_connected = FALSE;

+    m_establishing = FALSE;

   }
 
   return TRUE;
 }
 
 // --------------------------------------------------------------
   }
 
   return TRUE;
 }
 
 // --------------------------------------------------------------

-// wxSocketBase base IO function
+// wxSocketBase basic IO operations

 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 

-int wxSocketBase::DeferRead(char *buffer, size_t nbytes)
-{
-  GSocketEventFlags old_event_flags;
-  bool old_notify_state;
-
-  wxASSERT(m_defering == NO_DEFER);
+// All IO operations {Read, Write, ReadMsg, WriteMsg, Peek,
+// Unread, Discard} update m_error and m_lcount.
+//
+// TODO: Should Connect, Accept and AcceptWith update m_error?

 
 

-  m_defering = DEFER_READ;
+class _wxSocketInternalTimer: public wxTimer
+{
+public:
+  int *m_state;
+  unsigned long m_new_val;

 
 

-  old_event_flags = NeededReq();
-  old_notify_state = m_notify_state;
+  void Notify()
+  {
+    *m_state = (int)m_new_val;  // Change the value
+  }
+};

 
 

-  SetNotify(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG);
-  Notify(TRUE);
+wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
+{
+  // Mask read events
+  m_reading = TRUE;

 
 

-  m_defer_buffer = buffer;
-  m_defer_nbytes = nbytes;
-  while (m_defer_buffer != NULL)
-    wxYield();
+  m_lcount = _Read(buffer, nbytes);

 
 

-  Notify(old_notify_state);
-  SetNotify(old_event_flags);
+  // If in WAITALL mode, all bytes should have been read.
+  if (m_flags & WAITALL)
+    m_error = (m_lcount != nbytes);
+  else
+    m_error = (m_lcount == 0);

 
 

-  m_defering = NO_DEFER;
+  // Allow read events from now on
+  m_reading = FALSE;

 
 

-  return nbytes-m_defer_nbytes;
+  return *this;

 }
 
 }
 

-wxSocketBase& wxSocketBase::Read(char* buffer, size_t nbytes)
+wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)

 {
 {

+  int total;

   int ret = 1;
 
   int ret = 1;
 

-  m_lcount = GetPushback(buffer, nbytes, FALSE);
-  nbytes -= m_lcount;
-  buffer += m_lcount;
-
-  if (!m_connected)
-    return *this;
+  // we try this even if the connection has already been closed.
+  total = GetPushback(buffer, nbytes, FALSE);
+  nbytes -= total;
+  buffer += total;
+
+  // If the socket is not connected, or we have got the whole
+  // needed buffer, return immedately
+  if (!m_socket || !m_connected || !nbytes)
+    return total;
+
+  // Possible combinations (they are checked in this order)
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL | wxSOCKET_BLOCK
+  // wxSOCKET_WAITALL
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE
+  //
+  if (m_flags & wxSOCKET_NOWAIT)
+  {
+    GSocket_SetNonBlocking(m_socket, TRUE);
+    ret = GSocket_Read(m_socket, buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, FALSE);

 
 

-  // 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;
+    if (ret > 0)
+      total += ret;

   }
   }

+  else if (m_flags & wxSOCKET_WAITALL)
+  {
+    while (ret > 0 && nbytes > 0)
+    {
+      if (!(m_flags & wxSOCKET_BLOCK) && !(WaitForRead()))
+          break;

 
 

-  if ((m_flags & SPEED) != 0) {
+      ret = GSocket_Read(m_socket, buffer, nbytes);

 
 

-    if ((m_flags & WAITALL) != 0) {
-      while (ret > 0 && nbytes > 0) {
-        ret = GSocket_Read(m_socket, buffer, nbytes);
-        m_lcount += ret;
+      if (ret > 0)
+      {
+        total  += ret;

         buffer += ret;
         nbytes -= ret;
       }
         buffer += ret;
         nbytes -= ret;
       }

-    // In case the last call was an error ...
-      if (ret < 0)
-        m_lcount ++;
-    } else {
+    }
+  }
+  else
+  {
+    if ((m_flags & wxSOCKET_BLOCK) || WaitForRead())
+    {

       ret = GSocket_Read(m_socket, buffer, nbytes);
       ret = GSocket_Read(m_socket, buffer, nbytes);

+

       if (ret > 0)
       if (ret > 0)

-        m_lcount += ret;
+        total += ret;

     }
     }

-
-  } else {
-    ret = DeferRead(buffer, nbytes);
-
-    if (ret > 0)
-      m_lcount += ret;

   }
 
   }
 

-  return *this;
+  return total;

 }
 
 }
 

-wxSocketBase& wxSocketBase::ReadMsg(char* buffer, size_t nbytes)
+wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)

 {
 {

-  unsigned long len, len2, sig;
-  struct {
-    char sig[4];
-    char len[4];
+  wxUint32 len, len2, sig, total;
+  bool error;
+  int old_flags;
+  struct
+  {
+    unsigned char sig[4];
+    unsigned char len[4];

   } msg;
 
   } msg;
 

-  // sig should be an explicit 32-bit unsigned integer; I've seen
-  // compilers in which size_t was actually a 16-bit unsigned integer
+  // Mask read events
+  m_reading = TRUE;

 
 

-  Read((char *)&msg, sizeof(msg));
-  if (m_lcount != sizeof(msg))
-    return *this;
+  total = 0;
+  error = TRUE;
+  old_flags = m_flags;
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);

 
 

-  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;
+  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;
+
+  sig = (wxUint32)msg.sig[0];
+  sig |= (wxUint32)(msg.sig[1] << 8);
+  sig |= (wxUint32)(msg.sig[2] << 16);
+  sig |= (wxUint32)(msg.sig[3] << 24);

 
   if (sig != 0xfeeddead)
 
   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 is incorrectly computed in the original; this sequence is
-  // the fix
-  if (len > nbytes) {
+  {
+    wxLogWarning( _("TCP: invalid signature returned to ReadMsg."));
+    goto exit;
+  }
+
+  len = (wxUint32)msg.len[0];
+  len |= (wxUint32)(msg.len[1] << 8);
+  len |= (wxUint32)(msg.len[2] << 16);
+  len |= (wxUint32)(msg.len[3] << 24);
+
+  //wxLogMessage("Readmsg: %d  %d  %d  %d -> len == %d",
+  //  msg.len[0], msg.len[1], msg.len[2], msg.len[3], len);
+
+  if (len > nbytes)
+  {

     len2 = len - nbytes;
     len = nbytes;
   }
   else
     len2 = 0;
 
     len2 = len - nbytes;
     len = nbytes;
   }
   else
     len2 = 0;
 

-  // the "len &&" in the following statement is necessary so that
-  // we don't attempt to read (and possibly hang the system)
-  // if the message was zero bytes long
-  if (len && 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
+  // This check is necessary so that we don't attemp to read if
+  // the msg was zero bytes long.
+  if (len)
+  {
+    total = _Read(buffer, len);
+
+    if (total != len)
+      goto exit;
+  }
+  if (len2)
+  {
+    char *discard_buffer = new char[MAX_DISCARD_SIZE];
+    long discard_len;
+
+    // NOTE: discarded bytes don't add to m_lcount.
+    do
+    {
+      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);
+
+    delete [] discard_buffer;
+
+    if (len2 != 0)
+      goto exit;
+  }
+  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;
+
+  sig = (wxUint32)msg.sig[0];
+  sig |= (wxUint32)(msg.sig[1] << 8);
+  sig |= (wxUint32)(msg.sig[2] << 16);
+  sig |= (wxUint32)(msg.sig[3] << 24);
+

   if (sig != 0xdeadfeed)
   if (sig != 0xdeadfeed)

-    wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n"));
+  {
+    //wxLogMessage(wxT("Warning: invalid signature returned to ReadMsg"));
+    goto exit;
+  }

 
 

-  return *this;
-}
+  // everything was OK
+  error = FALSE;

 
 

-wxSocketBase& wxSocketBase::Peek(char* buffer, size_t nbytes)
-{
-  Read(buffer, nbytes);
-  CreatePushbackAfter(buffer, nbytes);
+exit:
+  m_error = error;
+  m_lcount = total;
+  m_reading = FALSE;
+  SetFlags(old_flags);

 
   return *this;
 }
 
 
   return *this;
 }
 

-int wxSocketBase::DeferWrite(const char *buffer, size_t nbytes)
+wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes)

 {
 {

-  GSocketEventFlags old_event_flags;
-  bool old_notify_state;
+  // Mask read events
+  m_reading = TRUE;

 
 

-  wxASSERT(m_defering == NO_DEFER);
+  m_lcount = _Read(buffer, nbytes);
+  Pushback(buffer, m_lcount);

 
 

-  m_defering = DEFER_WRITE;
+  // 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);

 
 

-  old_event_flags = NeededReq();
-  old_notify_state = m_notify_state;
+  // Allow read events again
+  m_reading = FALSE;

 
 

-  SetNotify(GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG);
-  Notify(TRUE);
+  return *this;
+}
+
+wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
+{
+  // Mask write events
+  m_writing = TRUE;

 
 

-  m_defer_buffer = (char *)buffer;
-  m_defer_nbytes = nbytes;
-  while (m_defer_buffer != NULL)
-    wxYield();
+  m_lcount = _Write(buffer, nbytes);

 
 

-  Notify(old_notify_state);
-  SetNotify(old_event_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);

 
 

-  m_defering = NO_DEFER;
+  // Allow write events again
+  m_writing = FALSE;

 
 

-  return nbytes-m_defer_nbytes;
+  return *this;

 }
 
 }
 

-wxSocketBase& wxSocketBase::Write(const char *buffer, size_t nbytes)
+wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes)

 {
 {

-  int ret;
+  wxUint32 total = 0;
+  int ret = 1;
+
+  if (!m_connected || !m_socket)
+    return 0;

 
 

-  if ((m_flags & SPEED) != 0)
+  // Possible combinations (they are checked in this order)
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL | wxSOCKET_BLOCK
+  // wxSOCKET_WAITALL
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE
+  //
+  if (m_flags & wxSOCKET_NOWAIT)
+  {
+    GSocket_SetNonBlocking(m_socket, TRUE);

     ret = GSocket_Write(m_socket, buffer, nbytes);
     ret = GSocket_Write(m_socket, buffer, nbytes);

+    GSocket_SetNonBlocking(m_socket, FALSE);
+
+    if (ret > 0)
+      total = ret;
+  }
+  else if (m_flags & wxSOCKET_WAITALL)
+  {
+    while (ret > 0 && nbytes > 0)
+    {
+      if (!(m_flags & wxSOCKET_BLOCK) && !(WaitForWrite()))
+          break;
+
+      ret = GSocket_Write(m_socket, buffer, nbytes);
+
+      if (ret > 0)
+      {
+        total  += ret;
+        buffer += ret;
+        nbytes -= ret;
+      }
+    }
+  }

   else
   else

-    ret = DeferWrite(buffer, nbytes);
+  {
+    if ((m_flags & wxSOCKET_BLOCK) || WaitForWrite())
+    {
+      ret = GSocket_Write(m_socket, buffer, nbytes);

 
 

-  if (ret != -1)
-    m_lcount += ret;
+      if (ret > 0)
+        total = ret;
+    }
+  }

 
 

-  return *this;
+  return total;

 }
 
 }
 

-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, size_t nbytes)
+wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)

 {
 {

+  wxUint32 total;
+  bool error;
+  int old_flags;

   struct {
   struct {

-    char sig[4];
-    char len[4];
+    unsigned char sig[4];
+    unsigned char len[4];

   } msg;
 
   } msg;
 

+  // Mask write events
+  m_writing = TRUE;
+
+  error = TRUE;
+  total = 0;
+  old_flags = m_flags;
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
+

   // warning about 'cast truncates constant value'
 #ifdef __VISUALC__
   // warning about 'cast truncates constant value'
 #ifdef __VISUALC__

-    #pragma warning(disable: 4310)
+#  pragma warning(disable: 4310)

 #endif // __VISUALC__
 
 #endif // __VISUALC__
 

-  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.sig[0] = (unsigned char) 0xad;
+  msg.sig[1] = (unsigned char) 0xde;
+  msg.sig[2] = (unsigned char) 0xed;
+  msg.sig[3] = (unsigned char) 0xfe;
+
+  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;
+
+  //wxLogMessage("Writemsg: %d  %d  %d  %d -> %d",
+  //  nbytes & 0xff,
+  //  (nbytes >> 8) & 0xff,
+  //  (nbytes >> 16) & 0xff,
+  //  (nbytes >> 24) & 0xff,
+  //  nbytes
+  //  );
+
+  if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg))
+    goto exit;
+
+  total = _Write(buffer, nbytes);
+
+  if (total < nbytes)
+    goto exit;
+
+  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;
   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;

-  Write((char *)&msg, sizeof(msg));
+
+  if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg))
+    goto exit;
+
+  // everything was OK
+  error = FALSE;
+
+exit:
+  m_error = error;
+  m_lcount = total;
+  m_writing = FALSE;

 
   return *this;
 
 #ifdef __VISUALC__
 
   return *this;
 
 #ifdef __VISUALC__

-    #pragma warning(default: 4310)
+#  pragma warning(default: 4310)

 #endif // __VISUALC__
 }
 
 #endif // __VISUALC__
 }
 

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

 {
 {

-  m_lcount = 0;
-  if (nbytes != 0) {
-    CreatePushbackAfter(buffer, nbytes);
-    m_lcount = nbytes;
-  }
-  return *this;
-}
+  if (nbytes != 0)
+    Pushback(buffer, nbytes);

 
 

-bool wxSocketBase::IsData() const
-{
-  if (!m_socket)
-    return FALSE;
+  m_error = FALSE;
+  m_lcount = nbytes;

 
 

-  return (GSocket_DataAvailable(m_socket));
+  return *this;

 }
 
 }
 

-void wxSocketBase::DoDefer(GSocketEvent req_evt)
+wxSocketBase& wxSocketBase::Discard()

 {
 {

-  int ret;
-
-  if (req_evt == GSOCK_LOST) {
-    Close();
-    m_defer_buffer = NULL;
-    return;
-  }
-  switch (m_defering) {
-  case DEFER_READ:
-    ret = GSocket_Read(m_socket, m_defer_buffer, m_defer_nbytes);
-    break;
-  case DEFER_WRITE:
-    ret = GSocket_Write(m_socket, m_defer_buffer, m_defer_nbytes);
-    break;
-  default:
-    ret = -1;
-    break;
-  }
+  int old_flags;
+  char *my_data = new char[MAX_DISCARD_SIZE];
+  wxUint32 recv_size = MAX_DISCARD_SIZE;
+  wxUint32 total = 0;

 
 

-  m_defer_nbytes -= ret;
+  // Mask read events
+  m_reading = TRUE;

 
 

-  if (ret < 0)
-    m_defer_nbytes++;
+  old_flags = m_flags;
+  SetFlags(wxSOCKET_NOWAIT);

 
 

-  if ((m_flags & WAITALL) == 0 || m_defer_nbytes == 0 || ret < 0) {
-    m_defer_buffer = NULL;
-    Notify(FALSE);
-  } else
-    m_defer_buffer += ret;
-}
-
-// ---------------------------------------------------------------------
-// --------- wxSocketBase Discard(): deletes all byte in the input queue
-// ---------------------------------------------------------------------
-void wxSocketBase::Discard()
-{
-#define MAX_BUFSIZE (10*1024)
-  char *my_data = new char[MAX_BUFSIZE];
-  size_t recv_size = MAX_BUFSIZE;
-
-  SaveState();
-  SetFlags(NOWAIT | SPEED);
-
-  while (recv_size == MAX_BUFSIZE)
+  while (recv_size == MAX_DISCARD_SIZE)

   {
   {

-    recv_size = Read(my_data, MAX_BUFSIZE).LastCount();
+    recv_size = _Read(my_data, MAX_DISCARD_SIZE);
+    total += recv_size;

   }
 
   }
 

-  RestoreState();

   delete [] my_data;
   delete [] my_data;

+  m_lcount = total;
+  m_error = FALSE;
+
+  // Allow read events again
+  m_reading = FALSE;

 
 

-#undef MAX_BUFSIZE
+  return *this;

 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

-// wxSocketBase socket info functions
+// wxSocketBase get local or peer addresses

 // --------------------------------------------------------------
 
 bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
 // --------------------------------------------------------------
 
 bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const


@@ -459,7 +585,7 @@ bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

-// wxSocketBase wait functions
+// wxSocketBase save and restore socket state

 // --------------------------------------------------------------
 
 void wxSocketBase::SaveState()
 // --------------------------------------------------------------
 
 void wxSocketBase::SaveState()


@@ -468,11 +594,11 @@ void wxSocketBase::SaveState()
 
   state = new wxSocketState();
 
 
   state = new wxSocketState();
 

-  state->notify_state     = m_notify_state;
-  state->evt_notify_state = m_neededreq;
-  state->socket_flags     = m_flags;
-  state->c_callback       = m_cbk;
-  state->c_callback_data  = m_cdata;
+  state->m_notify_state = m_notify_state;
+  state->m_neededreq    = m_neededreq;
+  state->m_flags        = m_flags;
+  state->m_cbk          = m_cbk;
+  state->m_cdata        = m_cdata;

 
   m_states.Append(state);
 }
 
   m_states.Append(state);
 }


@@ -488,98 +614,129 @@ void wxSocketBase::RestoreState()
 
   state = (wxSocketState *)node->Data();
 
 
   state = (wxSocketState *)node->Data();
 

-  SetFlags(state->socket_flags);
-  m_neededreq = state->evt_notify_state;
-  m_cbk       = state->c_callback;
-  m_cdata     = state->c_callback_data;
-  Notify(state->notify_state);
+  SetFlags(state->m_flags);
+  m_cbk       = state->m_cbk;
+  m_cdata     = state->m_cdata;
+  m_neededreq = state->m_neededreq;
+  Notify(state->m_notify_state);

 
   delete node;
   delete state;
 }
 
 
   delete node;
   delete state;
 }
 

+

 // --------------------------------------------------------------
 // --------------------------------------------------------------

-// --------- wxSocketBase callback functions --------------------
+// wxSocketBase Wait functions

 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 

-wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
-{
-  wxSockCbk old_cbk = cbk_;
-
-  m_cbk = cbk_;
-  return old_cbk;
-}
+// GRG: I have completely rewritten this family of functions
+// so that they don't depend on event notifications; instead,
+// they poll the socket, using GSocket_Select(), to check for
+// the specified combination of event flags, until an event
+// occurs or until the timeout ellapses. The polling loop
+// calls PROCESS_EVENTS(), so this won't block the GUI.

 
 

-char *wxSocketBase::CallbackData(char *data)
+bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags flags)

 {
 {

-  char *old_data = m_cdata;
-
-  m_cdata = data;
-  return old_data;
-}
+  GSocketEventFlags result;
+  _wxSocketInternalTimer timer;
+  long timeout;
+  int state = -1;

 
 

-// --------------------------------------------------------------
-// --------- wxSocketBase wait functions ------------------------
-// --------------------------------------------------------------
+  // Set this to TRUE to interrupt ongoing waits
+  m_interrupt = FALSE;

 
 

-class _wxSocketInternalTimer: public wxTimer {
- public:
-  int *m_state;
+  // Check for valid socket
+  if (!m_socket)
+    return FALSE;

 
 

-  void Notify()
-     {
-        *m_state = GSOCK_MAX_EVENT;  // Just to say it's a timeout.
-     }
-};
+  // If it is not a server, it must be connected or establishing connection
+  if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing))
+    return FALSE;

 
 

-static void wx_socket_wait(GSocket *socket, GSocketEvent event, char *cdata)
-{
-  int *state = (int *)cdata;
+  // Check for valid timeout value
+  if (seconds != -1)
+    timeout = seconds * 1000 + milliseconds;
+  else
+    timeout = m_timeout * 1000;

 
 

-  *state = event;
-}
+  // Activate timer
+  if (timeout)
+  {
+    timer.m_state = &state;
+    timer.m_new_val = 0;
+    timer.Start((int)timeout, TRUE);
+  }

 
 

-bool wxSocketBase::_Wait(long seconds, long milliseconds, int type)
-{
-  bool old_notify_state = m_notify_state;
-  int state = 0;
-  _wxSocketInternalTimer timer;
+  // Active polling (without using events)
+  //
+  // NOTE: this duplicates some of the code in OnRequest (lost
+  // connection and connection establishment handling) but this
+  // doesn't hurt. It has to be here because the event might
+  // be a bit delayed, and it has to be in OnRequest as well
+  // because maybe the WaitXXX functions are not being used.
+  //
+  // Do this at least once (important if timeout == 0, when
+  // we are just polling)
+  //
+  while (state == -1)
+  {
+    result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);

 
 

-  if (!m_connected || !m_socket)
-    return FALSE;
+    // Connection lost
+    if (result & GSOCK_LOST_FLAG)
+    {
+      timer.Stop();
+      Close();
+      return TRUE;
+    }

 
 

-  timer.m_state = &state;
+    // Incoming connection (server) or connection established (client)
+    if (result & GSOCK_CONNECTION_FLAG)
+    {
+      timer.Stop();
+      m_connected = TRUE;
+      m_establishing = FALSE;
+      return TRUE;
+    }

 
 

-  Notify(FALSE);
+    if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))
+    {
+      timer.Stop();
+      return TRUE;
+    }

 
 

-  timer.Start(seconds * 1000 + milliseconds, TRUE);
-  GSocket_SetFallback(m_socket, type, wx_socket_wait, (char *)&state);
+    // Wait more?
+    if ((timeout == 0) || (m_interrupt))
+      break;

 
 

-  while (state == 0)
-    wxYield();
+    PROCESS_EVENTS();
+  }

 
 

-  GSocket_UnsetFallback(m_socket, type);

   timer.Stop();
   timer.Stop();

-
-  Notify(old_notify_state);
-
-  return (state != GSOCK_MAX_EVENT);
+  return FALSE;

 }
 
 bool wxSocketBase::Wait(long seconds, long milliseconds)
 {
 }
 
 bool wxSocketBase::Wait(long seconds, long milliseconds)
 {

-  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
-                                      GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG);
+  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
+                                      GSOCK_OUTPUT_FLAG |
+                                      GSOCK_CONNECTION_FLAG |
+                                      GSOCK_LOST_FLAG);

 }
 
 bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
 {
 }
 
 bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
 {

-  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG);
+  // Check pushback buffer
+  if (m_unread)
+    return TRUE;
+
+  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG);

 }
 
 bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
 {
 }
 
 bool wxSocketBase::WaitForWrite(long seconds, long milliseconds)
 {

-  return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG);
+  return _Wait(seconds, milliseconds, GSOCK_OUTPUT_FLAG);

 }
 
 bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
 }
 
 bool wxSocketBase::WaitForLost(long seconds, long milliseconds)


@@ -587,135 +744,164 @@ bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
   return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
 }
 
   return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketBase callback management -------------------
-// --------------------------------------------------------------
-
-GSocketEventFlags wxSocketBase::EventToNotify(GSocketEvent evt)
+void wxSocketBase::SetTimeout(long seconds)

 {
 {

-  switch (evt)
-  {
-  case GSOCK_INPUT:
-    return GSOCK_INPUT_FLAG;
-  case GSOCK_OUTPUT:
-    return GSOCK_OUTPUT_FLAG;
-  case GSOCK_CONNECTION:
-    return GSOCK_CONNECTION_FLAG;
-  case GSOCK_LOST:
-    return GSOCK_LOST_FLAG;
-  default:
-    return 0;
-  }
-  return 0;
+  m_timeout = seconds;
+
+  if (m_socket)
+    GSocket_SetTimeout(m_socket, m_timeout * 1000);

 }
 
 }
 

+// --------------------------------------------------------------
+// wxSocketBase flags
+// --------------------------------------------------------------
+

 void wxSocketBase::SetFlags(wxSockFlags _flags)
 {
   m_flags = _flags;
 }
 
 void wxSocketBase::SetFlags(wxSockFlags _flags)
 {
   m_flags = _flags;
 }
 

-wxSocketBase::wxSockFlags wxSocketBase::GetFlags() const
+// --------------------------------------------------------------
+// wxSocketBase callback management
+// --------------------------------------------------------------
+
+wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)

 {
 {

-  return m_flags;
+  wxSockCbk old_cbk = cbk_;
+
+  m_cbk = cbk_;
+  return old_cbk;

 }
 
 }
 

-void wxSocketBase::SetNotify(GSocketEventFlags flags)
+char *wxSocketBase::CallbackData(char *data)

 {
 {

-  /* Check if server */
-  if (m_type != SOCK_SERVER)
-    flags &= ~GSOCK_CONNECTION_FLAG;
+  char *old_data = m_cdata;

 
 

-  m_neededreq = flags;
-  if (m_neededreq == 0)
-    Notify(FALSE);
-  else
-    Notify(m_notify_state);
+  m_cdata = data;
+  return old_data;

 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

-// Automatic notifier
+// wxSocketBase automatic notifier

 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 

-static void wx_socket_fallback(GSocket *socket, GSocketEvent event, char *cdata)
+// All events (INPUT, OUTPUT, CONNECTION, LOST) are now always
+// internally watched; but users will only be notified of those
+// events they are interested in.
+
+static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
+                                           GSocketEvent event, char *cdata)

 {
   wxSocketBase *sckobj = (wxSocketBase *)cdata;
 
 {
   wxSocketBase *sckobj = (wxSocketBase *)cdata;
 

-  sckobj->OnRequest(event);
+  sckobj->OnRequest((wxSocketNotify)event);

 }
 
 }
 

-void wxSocketBase::Notify(bool notify)
+wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt)

 {
 {

-  m_notify_state = notify;
-  if (!m_socket)
-    return;
+  switch (evt)
+  {
+    case GSOCK_INPUT:      return GSOCK_INPUT_FLAG;
+    case GSOCK_OUTPUT:     return GSOCK_OUTPUT_FLAG;
+    case GSOCK_CONNECTION: return GSOCK_CONNECTION_FLAG;
+    case GSOCK_LOST:       return GSOCK_LOST_FLAG;
+  }
+  return 0;
+}

 
 

-  GSocket_UnsetFallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
-                                  GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);
-  if (!notify)
-    return;
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+  m_neededreq = flags;
+}

 
 

-  GSocket_SetFallback(m_socket, m_neededreq, wx_socket_fallback, (char *)this);
+void wxSocketBase::Notify(bool notify)
+{
+  m_notify_state = notify;

 }
 
 }
 

-void wxSocketBase::OnRequest(GSocketEvent req_evt)
+void wxSocketBase::OnRequest(wxSocketNotify req_evt)

 {
   wxSocketEvent event(m_id);
 {
   wxSocketEvent event(m_id);

-  GSocketEventFlags notify = EventToNotify(req_evt);
+  wxSocketEventFlags flag = EventToNotify(req_evt);

 
 

-  if (m_defering != NO_DEFER) {
-    DoDefer(req_evt);
-    return;
+  // fprintf(stderr, "%s: Entering OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
+
+  // NOTE: this duplicates some of the code in _Wait, (lost
+  // connections and delayed connection establishment) but
+  // this doesn't hurt. It has to be here because maybe the
+  // WaitXXX are not being used, and it has to be in _Wait
+  // as well because the event might be a bit delayed.
+  //
+  switch (req_evt)
+  {
+    case wxSOCKET_CONNECTION :
+      m_establishing = FALSE;
+      m_connected = TRUE;
+      break;
+    case wxSOCKET_LOST:
+      Close();
+      break;
+
+  // If we are in the middle of a R/W operation, do not
+  // propagate events to users.
+  //
+    case wxSOCKET_INPUT:
+      if (m_reading) return;
+
+    case wxSOCKET_OUTPUT:
+      if (m_writing) return;

   }
 
   }
 

-  if ((m_neededreq & notify) == notify) {
+  if (((m_neededreq & flag) == flag) && m_notify_state)
+  {
+    // fprintf(stderr, "%s: Evt %d delivered\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);

     event.m_socket = this;
     event.m_socket = this;

-    event.m_skevt = req_evt;
-    ProcessEvent(event);
+    event.m_skevt  = req_evt;
+
+    if (m_evt_handler)
+#if EXPERIMENTAL_USE_POST
+      wxPostEvent(m_evt_handler, event);
+#else
+      ProcessEvent(event);
+#endif
+

     OldOnNotify(req_evt);
     OldOnNotify(req_evt);

+    if (m_cbk)
+      m_cbk(*this, req_evt, m_cdata);
+

   }
 
   }
 

-  if (req_evt == GSOCK_LOST)
-    Close();
+  // fprintf(stderr, "%s: Exiting OnRequest (evt %d)\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);

 }
 
 }
 

-void wxSocketBase::OldOnNotify(GSocketEvent evt)
+void wxSocketBase::OldOnNotify(wxSocketNotify WXUNUSED(evt))

 {
 }
 
 // --------------------------------------------------------------
 {
 }
 
 // --------------------------------------------------------------

-// --------- wxSocketBase functions [Callback, CallbackData] ----
+// wxSocketBase set event handler

 // --------------------------------------------------------------
 
 void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
 {
 // --------------------------------------------------------------
 
 void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
 {

-  SetNextHandler(&h_evt);
+  m_evt_handler = &h_evt;

   m_id = id;
   m_id = id;

+
+  SetNextHandler(&h_evt);

 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

-// --------- wxSocketBase pushback library ----------------------
+// wxSocketBase pushback

 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 

-void wxSocketBase::CreatePushbackAfter(const char *buffer, size_t size)
+void wxSocketBase::Pushback(const char *buffer, wxUint32 size)

 {
 {

-  char *curr_pos;
-
-  if (m_unread != NULL)
-    m_unread = (char *) realloc(m_unread, m_unrd_size+size);
-  else
-    m_unread = (char *) malloc(size);
-
-  curr_pos = m_unread + m_unrd_size;
-
-  memcpy(curr_pos, buffer, size);
-  m_unrd_size += size;
-}
+  if (!size) return;

 
 

-void wxSocketBase::CreatePushbackBefore(const char *buffer, size_t size)
-{

   if (m_unread == NULL)
     m_unread = (char *)malloc(size);
   if (m_unread == NULL)
     m_unread = (char *)malloc(size);

-  else {
+  else
+  {

     char *tmp;
 
     tmp = (char *)malloc(m_unrd_size + size);
     char *tmp;
 
     tmp = (char *)malloc(m_unrd_size + size);


@@ -730,18 +916,21 @@ void wxSocketBase::CreatePushbackBefore(const char *buffer, size_t size)
   memcpy(m_unread, buffer, size);
 }
 
   memcpy(m_unread, buffer, size);
 }
 

-size_t wxSocketBase::GetPushback(char *buffer, size_t size, bool peek)
+wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)

 {
   if (!m_unrd_size)
     return 0;
 
   if (size > (m_unrd_size-m_unrd_cur))
     size = m_unrd_size-m_unrd_cur;
 {
   if (!m_unrd_size)
     return 0;
 
   if (size > (m_unrd_size-m_unrd_cur))
     size = m_unrd_size-m_unrd_cur;

+

   memcpy(buffer, (m_unread+m_unrd_cur), size);
 
   memcpy(buffer, (m_unread+m_unrd_cur), size);
 

-  if (!peek) {
+  if (!peek)
+  {

     m_unrd_cur += size;
     m_unrd_cur += size;

-    if (m_unrd_size == m_unrd_cur) {
+    if (m_unrd_size == m_unrd_cur)
+    {

       free(m_unread);
       m_unread = NULL;
       m_unrd_size = 0;
       free(m_unread);
       m_unread = NULL;
       m_unrd_size = 0;


@@ -756,77 +945,117 @@ size_t wxSocketBase::GetPushback(char *buffer, size_t size, bool peek)
 // wxSocketServer
 // --------------------------------------------------------------
 
 // wxSocketServer
 // --------------------------------------------------------------
 

+// --------------------------------------------------------------
+// wxSocketServer ctor and dtor
+// --------------------------------------------------------------
+

 wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
              wxSockFlags flags) :
   wxSocketBase(flags, SOCK_SERVER)
 {
 wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
              wxSockFlags flags) :
   wxSocketBase(flags, SOCK_SERVER)
 {

+  // Create the socket

   m_socket = GSocket_new();
 
   if (!m_socket)
     return;
 
   m_socket = GSocket_new();
 
   if (!m_socket)
     return;
 

+  // Setup the socket as server

   GSocket_SetLocal(m_socket, addr_man.GetAddress());
   GSocket_SetLocal(m_socket, addr_man.GetAddress());

-  if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) {
+  if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
+  {

     GSocket_destroy(m_socket);
     m_socket = NULL;
     return;
   }
 
     GSocket_destroy(m_socket);
     m_socket = NULL;
     return;
   }
 

-  Notify(TRUE);
+  GSocket_SetTimeout(m_socket, m_timeout * 1000);
+  GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                wx_socket_callback, (char *)this);
+

 }
 
 // --------------------------------------------------------------
 // wxSocketServer Accept
 // --------------------------------------------------------------
 
 }
 
 // --------------------------------------------------------------
 // wxSocketServer Accept
 // --------------------------------------------------------------
 

-bool wxSocketServer::AcceptWith(wxSocketBase& sock)
+bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)

 {
   GSocket *child_socket;
 
 {
   GSocket *child_socket;
 

+  if (!m_socket)
+    return FALSE;
+
+  // GRG: If wait == FALSE, then the call should be nonblocking.
+  // When we are finished, we put the socket to blocking mode
+  // again.
+
+  if (!wait)
+    GSocket_SetNonBlocking(m_socket, TRUE);
+

   child_socket = GSocket_WaitConnection(m_socket);
 
   child_socket = GSocket_WaitConnection(m_socket);
 

+  if (!wait)
+    GSocket_SetNonBlocking(m_socket, FALSE);
+
+  // GRG: this was not being handled!
+  if (child_socket == NULL)
+    return FALSE;
+

   sock.m_type = SOCK_INTERNAL;
   sock.m_socket = child_socket;
   sock.m_connected = TRUE;
 
   sock.m_type = SOCK_INTERNAL;
   sock.m_socket = child_socket;
   sock.m_connected = TRUE;
 

+  GSocket_SetTimeout(sock.m_socket, sock.m_timeout * 1000);
+  GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                     GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                     wx_socket_callback, (char *)&sock);
+

   return TRUE;
 }
 
   return TRUE;
 }
 

-wxSocketBase *wxSocketServer::Accept()
+wxSocketBase *wxSocketServer::Accept(bool wait)

 {
   wxSocketBase* sock = new wxSocketBase();
 
   sock->SetFlags((wxSockFlags)m_flags);
 
 {
   wxSocketBase* sock = new wxSocketBase();
 
   sock->SetFlags((wxSockFlags)m_flags);
 

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

     return NULL;
 
   return sock;
 }
 
     return NULL;
 
   return sock;
 }
 

+bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
+{
+  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
+}
+

 // --------------------------------------------------------------
 // wxSocketClient
 // --------------------------------------------------------------
 
 // --------------------------------------------------------------
 // wxSocketClient
 // --------------------------------------------------------------
 

-// --------- wxSocketClient CONSTRUCTOR -------------------------

 // --------------------------------------------------------------
 // --------------------------------------------------------------

+// wxSocketClient ctor and dtor
+// --------------------------------------------------------------
+

 wxSocketClient::wxSocketClient(wxSockFlags _flags) :
   wxSocketBase(_flags, SOCK_CLIENT)
 {
 }
 
 wxSocketClient::wxSocketClient(wxSockFlags _flags) :
   wxSocketBase(_flags, SOCK_CLIENT)
 {
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketClient DESTRUCTOR --------------------------
-// --------------------------------------------------------------

 wxSocketClient::~wxSocketClient()
 {
 }
 
 // --------------------------------------------------------------
 wxSocketClient::~wxSocketClient()
 {
 }
 
 // --------------------------------------------------------------

-// --------- wxSocketClient Connect functions -------------------
+// wxSocketClient Connect functions

 // --------------------------------------------------------------
 // --------------------------------------------------------------

-bool wxSocketClient::Connect(wxSockAddress& addr_man, bool WXUNUSED(wait) )
+
+bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)

 {
 {

+  GSocketError err;
+

   if (IsConnected())
     Close();
 
   if (IsConnected())
     Close();
 


@@ -834,53 +1063,105 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool WXUNUSED(wait) )
   if (m_socket)
     GSocket_destroy(m_socket);
 
   if (m_socket)
     GSocket_destroy(m_socket);
 

-  // Initializes all socket stuff ...
-  // --------------------------------
+  // Initialize all socket stuff ...

   m_socket = GSocket_new();
   m_socket = GSocket_new();

+  m_connected = FALSE;
+  m_establishing = FALSE;

 
   if (!m_socket)
     return FALSE;
 
 
   if (!m_socket)
     return FALSE;
 

-  m_connected = FALSE;
+  GSocket_SetTimeout(m_socket, m_timeout * 1000);
+  GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                wx_socket_callback, (char *)this);
+
+  // GRG: If wait == FALSE, then the call should be nonblocking.
+  // When we are finished, we put the socket to blocking mode
+  // again.
+
+  if (!wait)
+    GSocket_SetNonBlocking(m_socket, TRUE);

 
 

-  // Update the flags of m_socket.
-  SetFlags(m_flags);

   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   GSocket_SetPeer(m_socket, addr_man.GetAddress());

-  if (GSocket_Connect(m_socket, GSOCK_STREAMED) != GSOCK_NOERROR) {
+  err = GSocket_Connect(m_socket, GSOCK_STREAMED);
+
+  if (!wait)
+    GSocket_SetNonBlocking(m_socket, FALSE);
+
+  if (err != GSOCK_NOERROR)
+  {
+    if (err == GSOCK_WOULDBLOCK)
+      m_establishing = TRUE;
+

     return FALSE;
   }
 
     return FALSE;
   }
 

-  // Enables bg events.
-  // ------------------
-  Notify(TRUE);
-

   m_connected = TRUE;
   return TRUE;
 }
 
   m_connected = TRUE;
   return TRUE;
 }
 

-bool wxSocketClient::WaitOnConnect(long seconds, long microseconds)
+bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)

 {
 {

-  int ret = _Wait(seconds, microseconds, GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG);
+  if (m_connected)                      // Already connected
+    return TRUE;

 
 

-  if (ret)
-    m_connected = TRUE;
+  if (!m_establishing || !m_socket)     // No connection in progress
+    return FALSE;

 
 

-  return m_connected;
+  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);

 }
 
 }
 

-void wxSocketClient::OnRequest(GSocketEvent evt)
+// --------------------------------------------------------------
+// wxDatagramSocket
+// --------------------------------------------------------------
+
+/* NOTE: experimental stuff - might change */
+
+wxDatagramSocket::wxDatagramSocket( wxSockAddress& addr, wxSockFlags flags )
+                : wxSocketBase( flags, SOCK_DATAGRAM )

 {
 {

-  if (evt == GSOCK_CONNECTION)
+  // Create the socket
+  m_socket = GSocket_new();
+
+  if(!m_socket)
+    return;
+
+  // Setup the socket as non connection oriented
+  GSocket_SetLocal(m_socket, addr.GetAddress());
+  if( GSocket_SetNonOriented(m_socket) != GSOCK_NOERROR )

   {
   {

-    if (m_connected)
-    {
-      m_neededreq &= ~GSOCK_CONNECTION_FLAG;
-      return;
-    }
-    m_connected = TRUE;
+    GSocket_destroy(m_socket);
+    m_socket = NULL;

     return;
   }
     return;
   }

-  wxSocketBase::OnRequest(evt);
+
+  // Initialize all stuff
+  m_connected = FALSE;
+  m_establishing = FALSE;
+  GSocket_SetTimeout( m_socket, m_timeout );
+  GSocket_SetCallback( m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                 GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                 wx_socket_callback, (char*)this );
+
+}
+
+wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
+                                              char* buf,
+                                              wxUint32 nBytes )
+{
+    Read(buf, nBytes);
+    GetPeer(addr);
+    return (*this);
+}
+
+wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
+                                            const char* buf,
+                                            wxUint32 nBytes )
+{
+    GSocket_SetPeer(m_socket, addr.GetAddress());
+    Write(buf, nBytes);
+    return (*this);

 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------


@@ -905,5 +1186,25 @@ void wxSocketEvent::CopyObject(wxObject& obj_d) const
   event->m_socket = m_socket;
 }
 
   event->m_socket = m_socket;
 }
 

+// --------------------------------------------------------------------------
+// wxSocketModule
+// --------------------------------------------------------------------------
+
+class WXDLLEXPORT wxSocketModule: public wxModule
+{
+  DECLARE_DYNAMIC_CLASS(wxSocketModule)
+public:
+  bool OnInit()
+  {
+    return GSocket_Init();
+  }
+  void OnExit()
+  {
+    GSocket_Cleanup();
+  }
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
+

 #endif
   // wxUSE_SOCKETS
 #endif
   // wxUSE_SOCKETS