tiny fixes

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

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 08af3c1959c0d90551436127abe170313055eccd..5f23f76f9cf4df5555613015a65e2f0a09ec2c81 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


@@ -24,12 +26,13 @@
 /////////////////////////////////////////////////////////////////////////////
 // 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 "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 <stdlib.h>
 #include <string.h>
 
 #include <stdlib.h>
 #include <string.h>


@@ -38,9 +41,17 @@
 /////////////////////////////////////////////////////////////////////////////
 // wxSocket headers
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////
 // wxSocket headers
 /////////////////////////////////////////////////////////////////////////////

-#include <wx/module.h>
-#include <wx/sckaddr.h>
-#include <wx/socket.h>
+#include "wx/sckaddr.h"
+#include "wx/socket.h"
+
+
+#if defined(__WXMSW__) || defined(__WXPM__)
+#define PROCESS_EVENTS() wxYield()
+#elif defined(__WXGTK__)
+#include <gtk/gtk.h>
+#define PROCESS_EVENTS() gtk_main_iteration()
+#endif
+

 
 // --------------------------------------------------------------
 // ClassInfos
 
 // --------------------------------------------------------------
 // ClassInfos


@@ -52,9 +63,10 @@ IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
 #endif
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
 #endif
 

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

 public:
 public:

-  bool notify_state; 
+  bool notify_state;

   GSocketEventFlags evt_notify_state;
   wxSocketBase::wxSockFlags socket_flags;
   wxSocketBase::wxSockCbk c_callback;
   GSocketEventFlags evt_notify_state;
   wxSocketBase::wxSockFlags socket_flags;
   wxSocketBase::wxSockCbk c_callback;


@@ -65,369 +77,621 @@ public:
 };
 
 // --------------------------------------------------------------
 };
 
 // --------------------------------------------------------------

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

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

+

 wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
          wxSocketBase::wxSockType _type) :
   wxEvtHandler(),
 wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
          wxSocketBase::wxSockType _type) :
   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_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_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
+  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_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_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
+  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()
 {

-  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)
+// 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?
+
+class _wxSocketInternalTimer: public wxTimer
+{
+public:
+  int *m_state;
+  unsigned long m_new_val;
+
+  void Notify()
+  {
+    *m_state = m_new_val;  // Change the value
+  }
+};
+
+wxUint32 wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)

 {
 {

-  GSocketEventFlags old_event_flags;
-  bool old_notify_state;
+  // Timer for timeout
+  _wxSocketInternalTimer timer;

 
 

+  //wxLogMessage("Entrando a DeferRead, nbytes = %d", nbytes);

   wxASSERT(m_defering == NO_DEFER);
 
   wxASSERT(m_defering == NO_DEFER);
 

+  // Set the defering mode to READ.

   m_defering = DEFER_READ;
 
   m_defering = DEFER_READ;
 

-  old_event_flags = NeededReq();
-  old_notify_state = m_notify_state;
-  
-  SetNotify(GSOCK_INPUT_FLAG | GSOCK_LOST_FLAG);
-  Notify(TRUE);
-
+  // Set the current buffer.

   m_defer_buffer = buffer;
   m_defer_nbytes = nbytes;
   m_defer_buffer = buffer;
   m_defer_nbytes = nbytes;

+  m_defer_timer  = &timer;
+
+  timer.m_state = (int *)&m_defer_buffer;
+  timer.m_new_val = 0;
+
+  timer.Start(m_timeout * 1000, FALSE);
+
+  // If the socket is readable, call DoDefer for the first time
+  if (GSocket_Select(m_socket, GSOCK_INPUT_FLAG))
+  {
+    //wxLogMessage("Llamando al primer DoDefer");
+    DoDefer();
+  }
+
+  // Wait for buffer completion.

   while (m_defer_buffer != NULL)
   while (m_defer_buffer != NULL)

-    wxYield();
+    PROCESS_EVENTS();

 
 

-  Notify(old_notify_state);
-  SetNotify(old_event_flags);
+  timer.Stop();

 
 

+  // Disable defering mode.

   m_defering = NO_DEFER;
   m_defering = NO_DEFER;

+  m_defer_timer = NULL;

 
 

+  // Return the number of bytes read from the socket.
+  //wxLogMessage("Saliendo de DeferRead: total: %d bytes", nbytes - m_defer_nbytes);

   return nbytes-m_defer_nbytes;
 }
 
   return nbytes-m_defer_nbytes;
 }
 

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

 {
 {

-  int ret = 1;
+  // Mask read events
+  m_reading = TRUE;

 
 

-  m_lcount = GetPushback(buffer, nbytes, FALSE);
-  nbytes -= m_lcount;
-  buffer += m_lcount;
+  m_lcount = _Read(buffer, nbytes);

 
 

-  if (!m_connected)
-    return *this;
+  // 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);

 
 

-  // 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;
-  }
+  // Trigger another read event if there is still data available.
+  m_reading = FALSE;
+  // TODO: TriggerRead

 
 

-  if ((m_flags & SPEED) != 0) {
+  return *this;
+}

 
 

-    if ((m_flags & WAITALL) != 0) {
-      while (ret > 0 && nbytes > 0) {
-        ret = GSocket_Read(m_socket, buffer, nbytes);
-        m_lcount += ret;
-        buffer += ret;
-        nbytes -= ret;
-      }
-    // In case the last call was an error ...
-      if (ret < 0)
-        m_lcount ++;
-    } else {
+wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
+{
+  int total;
+  int ret = 1;
+
+  // 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_connected || !m_socket || !nbytes)
+    return total;
+
+  // Possible combinations (they are checked in this order)
+  // NOWAIT
+  // SPEED | WAITALL
+  // SPEED
+  // WAITALL
+  // NONE
+  //
+  if (m_flags & NOWAIT)                 // NOWAIT
+  {
+    GSocket_SetNonBlocking(m_socket, TRUE);
+    ret = GSocket_Read(m_socket, buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, FALSE);
+
+    if (ret > 0)
+      total += ret;
+  }
+  else if ((m_flags & SPEED) && (m_flags & WAITALL))    // SPEED, WAITALL
+  {
+    while (ret > 0 && nbytes > 0)
+    {

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

-      if (ret > 0)
-        m_lcount += ret;
+      total += ret;
+      buffer += ret;
+      nbytes -= ret;

     }
     }

+    // In case the last call was an error ...
+    if (ret < 0)
+      total++;
+  }
+  else if (m_flags & SPEED)             // SPEED, !WAITALL
+  {
+    ret = GSocket_Read(m_socket, buffer, nbytes);

 
 

-  } else {
+    if (ret > 0)
+      total += ret;
+  }
+  else                                  // NONE or WAITALL
+  {

     ret = DeferRead(buffer, nbytes);
 
     if (ret > 0)
     ret = DeferRead(buffer, nbytes);
 
     if (ret > 0)

-      m_lcount += ret;
+      total += 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];
+#define MAX_DISCARD_SIZE (10 * 1024)
+
+  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 & SPEED) | 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) {
+  {
+    wxLogMessage(T("Warning: 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, discard_len);
+      len2 -= 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(T("Warning: invalid signature returned to ReadMsg"));
+    goto exit;
+  }
+
+  // everything was OK
+  error = FALSE;

 
 

+exit:
+  m_error = error;
+  m_lcount = total;
+  m_reading = FALSE;
+  SetFlags(old_flags);
+
+  // TODO: TriggerRead

   return *this;
   return *this;

+
+#undef MAX_DISCARD_SIZE

 }
 
 }
 

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

 {
 {

-  Read(buffer, nbytes);
-  CreatePushbackAfter(buffer, nbytes);
+  // Mask read events
+  m_reading = TRUE;
+
+  m_lcount = _Read(buffer, nbytes);
+  Pushback(buffer, nbytes);
+
+  // 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);

 
 

+  // Trigger another read event if there is still data available.
+  m_reading = FALSE;
+
+  // TODO: TriggerRead

   return *this;
 }
 
   return *this;
 }
 

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

 {
 {

-  GSocketEventFlags old_event_flags;
-  bool old_notify_state;
+  // Timer for timeout
+  _wxSocketInternalTimer timer;

 
   wxASSERT(m_defering == NO_DEFER);
 
   wxASSERT(m_defering == NO_DEFER);

+  //wxLogMessage("Entrando a DeferWrite");

 
   m_defering = DEFER_WRITE;
 
 
   m_defering = DEFER_WRITE;
 

-  old_event_flags = NeededReq();
-  old_notify_state = m_notify_state;
-
-  SetNotify(GSOCK_OUTPUT_FLAG | GSOCK_LOST_FLAG);
-  Notify(TRUE);
-
+  // Set the current buffer

   m_defer_buffer = (char *)buffer;
   m_defer_nbytes = nbytes;
   m_defer_buffer = (char *)buffer;
   m_defer_nbytes = nbytes;

+  m_defer_timer  = &timer;
+
+  // Start timer
+  timer.m_state   = (int *)&m_defer_buffer;
+  timer.m_new_val = 0;
+
+  timer.Start(m_timeout * 1000, FALSE);
+
+  // If the socket is writable, call DoDefer for the first time
+  if (GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG))
+  {
+    //wxLogMessage("Llamando al primer DoDefer");
+    DoDefer();
+  }
+
+  // Wait for buffer completion.

   while (m_defer_buffer != NULL)
   while (m_defer_buffer != NULL)

-    wxYield();
+    PROCESS_EVENTS();

 
 

-  Notify(old_notify_state);
-  SetNotify(old_event_flags);
+  timer.Stop();

 
 

+  // Disable defering mode
+  m_defer_timer = NULL;

   m_defering = NO_DEFER;
 
   m_defering = NO_DEFER;
 

+  wxString s;
+  s.Printf("Saliendo de DeferWrite: total %d bytes", nbytes-m_defer_nbytes);
+  //wxLogMessage(s);
+

   return nbytes-m_defer_nbytes;
 }
 
   return nbytes-m_defer_nbytes;
 }
 

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

 {
 {

-  int ret;
+  // Mask write events
+  m_writing = TRUE;

 
 

-  if ((m_flags & SPEED) != 0)
-    ret = GSocket_Write(m_socket, buffer, nbytes);
+  m_lcount = _Write(buffer, nbytes);
+
+  // If in WAITALL mode, all bytes should have been written.
+  if (m_flags & WAITALL)
+    m_error = (m_lcount != nbytes);

   else
   else

-    ret = DeferWrite(buffer, nbytes);
+    m_error = (m_lcount == 0);

 
 

-  if (ret != -1)
-    m_lcount += ret;
+  // Trigger another write event if the socket is still writable
+  m_writing = FALSE;

 
 

+  // TODO: TriggerWrite

   return *this;
 }
 
   return *this;
 }
 

-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, size_t nbytes)
+wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes)
+{
+  wxUint32 total = 0;
+  int ret = 1;
+
+  if (!m_connected || !m_socket)
+    return 0;
+
+  // Possible combinations (they are checked in this order)
+  // NOWAIT
+  // SPEED | WAITALL
+  // SPEED
+  // WAITALL
+  // NONE
+  //
+  if (m_flags & NOWAIT)                 // NOWAIT
+  {
+    GSocket_SetNonBlocking(m_socket, TRUE);
+    ret = GSocket_Write(m_socket, buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, FALSE);
+
+    if (ret > 0)
+      total = ret;
+  }
+  else if ((m_flags & SPEED) && (m_flags & WAITALL))    // SPEED, WAITALL
+  {
+    while (ret > 0 && nbytes > 0)
+    {
+      ret = GSocket_Write(m_socket, buffer, nbytes);
+      total += ret;
+      buffer += ret;
+      nbytes -= ret;
+    }
+    // In case the last call was an error ...
+    if (ret < 0)
+      total ++;
+  }
+  else if (m_flags & SPEED)             // SPEED, !WAITALL
+  {
+    ret = GSocket_Write(m_socket, buffer, nbytes);
+
+    if (ret > 0)
+      total = ret;
+  }
+  else                                  // NONE or WAITALL
+  {
+    ret = DeferWrite(buffer, nbytes);
+
+    if (ret > 0)
+      total = ret;
+  }
+
+  return total;
+}
+
+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 & SPEED) | 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;
+
+  // TODO: TriggerWrite

   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)
+void wxSocketBase::DoDefer()

 {
   int ret;
 
 {
   int ret;
 

-  if (req_evt == GSOCK_LOST) {
-    Close();
-    m_defer_buffer = NULL;
+  if (!m_defer_buffer)

     return;
     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;
-  }

 
 

-  m_defer_nbytes -= ret;
+  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;
+  }

 
 

-  if (ret < 0)
-    m_defer_nbytes++;
+  if (ret >= 0)
+    m_defer_nbytes -= ret;

 
 

-  if ((m_flags & WAITALL) == 0 || m_defer_nbytes == 0 || ret < 0) {
+  // If we are waiting for all bytes to be acquired, keep the defering
+  // mode enabled.
+  if (!(m_flags & WAITALL) || !m_defer_nbytes || ret < 0)
+  {

     m_defer_buffer = NULL;
     m_defer_buffer = NULL;

-    Notify(FALSE);
-  } else
+  }
+  else
+  {

     m_defer_buffer += ret;
     m_defer_buffer += ret;

+    m_defer_timer->Start(m_timeout * 1000, FALSE);
+  }
+
+  //wxLogMessage("DoDefer ha transferido %d bytes", ret);

 }
 
 }
 

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

 {
 #define MAX_BUFSIZE (10*1024)
 {
 #define MAX_BUFSIZE (10*1024)

+
+  int old_flags;

   char *my_data = new char[MAX_BUFSIZE];
   char *my_data = new char[MAX_BUFSIZE];

-  size_t recv_size = MAX_BUFSIZE;
+  wxUint32 recv_size = MAX_BUFSIZE;
+  wxUint32 total = 0;
+
+  // Mask read events
+  m_reading = TRUE;

 
 

-  SaveState();
-  SetFlags(NOWAIT | SPEED);
+  old_flags = m_flags;
+  SetFlags(NOWAIT);

 
 

-  while (recv_size == MAX_BUFSIZE) 
+  while (recv_size == MAX_BUFSIZE)

   {
   {

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

   }
 
   }
 

-  RestoreState();

   delete [] my_data;
   delete [] my_data;

+  m_lcount = total;
+  m_error = FALSE;
+
+  // Trigger another read event if there is still data available.
+  m_reading = FALSE;
+
+  // TODO: TriggerRead
+  return *this;

 
 #undef MAX_BUFSIZE
 }
 
 // --------------------------------------------------------------
 
 #undef MAX_BUFSIZE
 }
 
 // --------------------------------------------------------------

-// 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 +723,7 @@ bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

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

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


@@ -498,88 +762,122 @@ void wxSocketBase::RestoreState()
   delete state;
 }
 
   delete state;
 }
 

-// --------------------------------------------------------------
-// --------- wxSocketBase callback functions --------------------
-// --------------------------------------------------------------
-
-wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
-{
-  wxSockCbk old_cbk = cbk_;
-
-  m_cbk = cbk_;
-  return old_cbk;
-}
-
-char *wxSocketBase::CallbackData(char *data)
-{
-  char *old_data = m_cdata;
-
-  m_cdata = data;
-  return old_data;
-}

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

-// --------- wxSocketBase wait functions ------------------------
+// wxSocketBase Wait functions

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

-class _wxSocketInternalTimer: public wxTimer {
- public:
-  int *m_state;
-
-  void Notify()
-     {
-        *m_state = GSOCK_MAX_EVENT;  // Just to say it's a timeout.
-     }
-};
-
-static void wx_socket_wait(GSocket *socket, GSocketEvent event, char *cdata)
-{
-  int *state = (int *)cdata;
-
-  *state = event;
-}
+// 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.

 
 

-bool wxSocketBase::_Wait(long seconds, long milliseconds, int type)
+bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags flags)

 {
 {

-  bool old_notify_state = m_notify_state;
-  int state = 0;
+  GSocketEventFlags result;

   _wxSocketInternalTimer timer;
   _wxSocketInternalTimer timer;

+  long timeout;
+  int state = -1;

 
 

-  if (!m_connected || !m_socket)
+  // Check for valid socket
+  if (!m_socket)

     return FALSE;
 
     return FALSE;
 

-  timer.m_state = &state;
+  // If it is not a server, it must be connected or establishing connection
+  if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing))
+    return FALSE;

 
 

-  Notify(FALSE);
+  // Check for valid timeout value
+  if (seconds != -1)
+    timeout = seconds * 1000 + milliseconds;
+  else
+    timeout = m_timeout * 1000;

 
 

-  timer.Start(seconds * 1000 + milliseconds, TRUE);
-  GSocket_SetFallback(m_socket, type, wx_socket_wait, (char *)&state);
+  // Activate timer
+  if (timeout)
+  {
+    timer.m_state = &state;
+    timer.m_new_val = 0;
+    timer.Start(timeout, TRUE);
+  }

 
 

-  while (state == 0)
-    wxYield();
+  // 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)
+  do
+  {
+    result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);

 
 

-  GSocket_UnsetFallback(m_socket, type);
-  timer.Stop();
+    // Connection lost
+    if (result & GSOCK_LOST_FLAG)
+    {
+      timer.Stop();
+      m_defer_buffer = NULL;
+      Close();
+      return TRUE;
+    }
+
+    // Incoming connection (server) or connection established (client)
+    if (result & GSOCK_CONNECTION_FLAG)
+    {
+      timer.Stop();
+      m_connected = TRUE;
+      m_establishing = FALSE;
+      return TRUE;
+    }

 
 

-  Notify(old_notify_state);
+    // If we are in the middle of a R/W operation, do not propagate
+    // to users.
+    if ( ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))
+         && (!m_writing) && (!m_reading) )
+    {
+/* TODO: remove this
+      if (m_defer_buffer == NULL)
+*/
+      {
+        timer.Stop();
+        return TRUE;
+      }
+    }
+
+    if (timeout != 0)
+      PROCESS_EVENTS();
+  }
+  while ((state == -1) && timeout);

 
 

-  return (state != GSOCK_MAX_EVENT);
+  timer.Stop();
+  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)


@@ -587,103 +885,146 @@ 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_FLAG:
-    return GSOCK_LOST_FLAG;
-  default:
-    return 0;
-  }
-  return 0;
+  m_timeout = seconds;
+
+  if (m_socket)
+    GSocket_SetTimeout(m_socket, m_timeout);

 }
 
 }
 

+// --------------------------------------------------------------
+// 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);
+
+  // 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
+  // connection and connection establishment handling) 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:
+      m_defer_buffer = NULL;
+      Close();
+      break;
+    case wxSOCKET_INPUT:
+    case wxSOCKET_OUTPUT:
+      if (m_defer_buffer)
+      {
+        // fprintf(stderr, "%s: Habia buffer, evt %d skipped\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
+        DoDefer();
+        // Do not notify to user
+        return;
+      }
+      break;
+  }

 
 

-  if (m_defering != NO_DEFER) {
-    DoDefer(req_evt);
+  // If we are in the middle of a R/W operation, do not
+  // propagate events to users.
+  if (((req_evt == wxSOCKET_INPUT) && m_reading) ||
+      ((req_evt == wxSOCKET_OUTPUT) && m_writing))
+  {
+    // fprintf(stderr, "%s: Swallowed evt %d\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);

     return;
   }
 
     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;
+    event.m_skevt  = req_evt;

     ProcessEvent(event);
     OldOnNotify(req_evt);
     ProcessEvent(event);
     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)


@@ -693,25 +1034,10 @@ void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

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

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

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

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


@@ -724,19 +1050,20 @@ void wxSocketBase::CreatePushbackBefore(const char *buffer, size_t size)
 
     m_unread = tmp;
   }
 
     m_unread = tmp;
   }

-  
+

   m_unrd_size += size;
 
   memcpy(m_unread, buffer, size);
 }
 
   m_unrd_size += 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);
 
   if (!peek) {
   memcpy(buffer, (m_unread+m_unrd_cur), size);
 
   if (!peek) {


@@ -756,77 +1083,116 @@ 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);
+  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);
+  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 +1200,53 @@ 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);
+  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;
-
-  return m_connected;
-}
+  if (!m_establishing || !m_socket)     // No connection in progress
+    return FALSE;

 
 

-void wxSocketClient::OnRequest(GSocketEvent evt)
-{
-  if (evt == GSOCK_CONNECTION) 
-  {
-    if (m_connected) 
-    {
-      m_neededreq &= ~GSOCK_CONNECTION_FLAG;
-      return;
-    }
-    m_connected = TRUE;
-    return;
-  }
-  wxSocketBase::OnRequest(evt);
+  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);

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


@@ -905,5 +1271,21 @@ 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