tried to clean strdup() mess: we now have wxStrdup[AW] which should be always available

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

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 5f23f76f9cf4df5555613015a65e2f0a09ec2c81..2848d09a9a9e7f0e251452ddda60ae98eee147e4 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -3,13 +3,16 @@
 // Purpose:    Socket handler classes
 // Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia
 // Created:    April 1997
 // Purpose:    Socket handler classes
 // Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia
 // Created:    April 1997

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

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

+// ==========================================================================
+// Declarations
+// ==========================================================================
+

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


@@ -23,9 +26,7 @@
 
 #if wxUSE_SOCKETS
 
 
 #if wxUSE_SOCKETS
 

-/////////////////////////////////////////////////////////////////////////////
-// wxWindows headers
-/////////////////////////////////////////////////////////////////////////////
+#include "wx/app.h"

 #include "wx/defs.h"
 #include "wx/object.h"
 #include "wx/string.h"
 #include "wx/defs.h"
 #include "wx/object.h"
 #include "wx/string.h"


@@ -33,262 +34,336 @@
 #include "wx/utils.h"
 #include "wx/module.h"
 #include "wx/log.h"
 #include "wx/utils.h"
 #include "wx/module.h"
 #include "wx/log.h"

+#include "wx/intl.h"
+#include "wx/event.h"

 
 

-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
+#if wxUSE_GUI
+  #include "wx/gdicmn.h"      // for wxPendingDelete
+#endif // wxUSE_GUI

 
 

-/////////////////////////////////////////////////////////////////////////////
-// wxSocket headers
-/////////////////////////////////////////////////////////////////////////////

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

+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------

 
 

-#if defined(__WXMSW__) || defined(__WXPM__)
-#define PROCESS_EVENTS() wxYield()
-#elif defined(__WXGTK__)
-#include <gtk/gtk.h>
-#define PROCESS_EVENTS() gtk_main_iteration()
-#endif
+// discard buffer
+#define MAX_DISCARD_SIZE (10 * 1024)
+
+// what to do within waits: in wxBase we don't do anything as we don't have
+// the event loop anyhow (for now). In GUI apps we have 2 cases: from the main
+// thread itself we have to call wxYield() to let the events (including the
+// GUI events and the low-level (not wxWindows) events from GSocket) be
+// processed. From another thread it is enough to just call wxThread::Yield()
+// which will give away the rest of our time slice: the explanation is that
+// the events will be processed by the main thread anyhow, without calling
+// wxYield(), but we don't want to eat the CPU time uselessly while sitting
+// in the loop waiting for the data
+#if wxUSE_GUI
+    #if wxUSE_THREADS
+        #define PROCESS_EVENTS()        \
+        {                               \
+            if ( wxThread::IsMain() )   \
+                wxYield();              \
+            else                        \
+                wxThread::Yield();      \
+        }
+    #else // !wxUSE_THREADS
+        #define PROCESS_EVENTS() wxYield()
+    #endif // wxUSE_THREADS/!wxUSE_THREADS
+#else // !wxUSE_GUI
+    #define PROCESS_EVENTS()
+#endif // wxUSE_GUI/!wxUSE_GUI
+
+#define wxTRACE_Socket _T("wxSocket")

 
 

+// --------------------------------------------------------------------------
+// wxWin macros
+// --------------------------------------------------------------------------

 
 

-// --------------------------------------------------------------
-// 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
+
+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------

 
 class wxSocketState : public wxObject
 {
 public:
 
 class wxSocketState : public wxObject
 {
 public:

-  bool notify_state;
-  GSocketEventFlags evt_notify_state;
-  wxSocketBase::wxSockFlags socket_flags;
-  wxSocketBase::wxSockCbk c_callback;
-  char *c_callback_data;
+  wxSocketFlags            m_flags;
+  wxSocketEventFlags       m_eventmask;
+  bool                     m_notify;
+  void                    *m_clientData;
+#if WXWIN_COMPATIBILITY
+  wxSocketBase::wxSockCbk  m_cbk;
+  char                    *m_cdata;
+#endif // WXWIN_COMPATIBILITY

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

-// --------------------------------------------------------------
-// wxSocketBase ctor and dtor
-// --------------------------------------------------------------
-
-wxSocketBase::wxSocketBase(wxSocketBase::wxSockFlags _flags,
-         wxSocketBase::wxSockType _type) :
-  wxEvtHandler(),
-  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_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
-  m_cbk(NULL), m_cdata(NULL)
+// ==========================================================================
+// wxSocketBase
+// ==========================================================================
+
+// --------------------------------------------------------------------------
+// Initialization and shutdown
+// --------------------------------------------------------------------------
+
+// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses
+//           to m_countInit with a crit section
+size_t wxSocketBase::m_countInit = 0;
+
+bool wxSocketBase::IsInitialized()
+{
+    return m_countInit > 0;
+}
+
+bool wxSocketBase::Initialize()
+{
+    if ( !m_countInit++ )
+    {
+        if ( !GSocket_Init() )
+        {
+            m_countInit--;
+
+            return FALSE;
+        }
+    }
+
+    return TRUE;
+}
+
+void wxSocketBase::Shutdown()

 {
 {

+    // we should be initialized
+    wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") );
+    if ( !--m_countInit )
+    {
+        GSocket_Cleanup();
+    }

 }
 
 }
 

-wxSocketBase::wxSocketBase() :
-  wxEvtHandler(),
-  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_defering(NO_DEFER), m_defer_buffer(NULL), m_defer_timer(NULL),
-  m_cbk(NULL), m_cdata(NULL)
+// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
+
+void wxSocketBase::Init()

 {
 {

+  m_socket       = NULL;
+  m_type         = wxSOCKET_UNINIT;
+
+  // state
+  m_flags        = 0;
+  m_connected    =
+  m_establishing =
+  m_reading      =
+  m_writing      =
+  m_error        = FALSE;
+  m_lcount       = 0;
+  m_timeout      = 600;
+  m_beingDeleted = FALSE;
+
+  // pushback buffer
+  m_unread       = NULL;
+  m_unrd_size    = 0;
+  m_unrd_cur     = 0;
+
+  // events
+  m_id           = -1;
+  m_handler      = NULL;
+  m_clientData   = NULL;
+  m_notify       = FALSE;
+  m_eventmask    = 0;
+#if WXWIN_COMPATIBILITY
+  m_cbk          = NULL;
+  m_cdata        = NULL;
+#endif // WXWIN_COMPATIBILITY
+
+  if ( !IsInitialized() )
+  {
+      // this Initialize() will be undone by wxSocketModule::OnExit(), all the
+      // other calls to it should be matched by a call to Shutdown()
+      Initialize();
+  }
+}
+
+wxSocketBase::wxSocketBase()
+{
+  Init();
+}
+
+wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
+{
+  Init();
+
+  m_flags = flags;
+  m_type  = type;

 }
 
 wxSocketBase::~wxSocketBase()
 {
 }
 
 wxSocketBase::~wxSocketBase()
 {

-  if (m_unread)
-    free(m_unread);
+  // Just in case the app called Destroy() *and* then deleted
+  // the socket immediately: don't leave dangling pointers.
+#if wxUSE_GUI
+  wxPendingDelete.DeleteObject(this);
+#endif

 
   // Shutdown and close the socket
 
   // Shutdown and close the socket

-  Close();
+  if (!m_beingDeleted)
+    Close();

 
   // Destroy the GSocket object
   if (m_socket)
     GSocket_destroy(m_socket);
 
   // Destroy the GSocket object
   if (m_socket)
     GSocket_destroy(m_socket);

+
+  // Free the pushback buffer
+  if (m_unread)
+    free(m_unread);

 }
 
 }
 

-bool wxSocketBase::Close()
+bool wxSocketBase::Destroy()

 {
 {

-  if (m_socket)
-  {
-    // Disable callbacks
-    GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
-                                    GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);
+  // Delayed destruction: the socket will be deleted during the next
+  // idle loop iteration. This ensures that all pending events have
+  // been processed.
+  m_beingDeleted = TRUE;

 
 

-    // Shutdown the connection
-    GSocket_Shutdown(m_socket);
-    m_connected = FALSE;
-    m_establishing = FALSE;
-  }
+  // Shutdown and close the socket
+  Close();
+
+  // Supress events from now on
+  Notify(FALSE);
+
+#if wxUSE_GUI
+  if ( !wxPendingDelete.Member(this) )
+    wxPendingDelete.Append(this);
+#else
+  delete this;
+#endif

 
   return TRUE;
 }
 
 
   return TRUE;
 }
 

-// --------------------------------------------------------------
-// wxSocketBase basic IO operations
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Basic IO calls
+// --------------------------------------------------------------------------

 
 

-// All IO operations {Read, Write, ReadMsg, WriteMsg, Peek,
-// Unread, Discard} update m_error and m_lcount.
+// The following IO operations update m_error and m_lcount:
+// {Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard}

 //
 // TODO: Should Connect, Accept and AcceptWith update m_error?
 
 //
 // TODO: Should Connect, Accept and AcceptWith update m_error?
 

-class _wxSocketInternalTimer: public wxTimer
+bool wxSocketBase::Close()

 {
 {

-public:
-  int *m_state;
-  unsigned long m_new_val;
+  // Interrupt pending waits
+  InterruptWait();

 
 

-  void Notify()
+  if (m_socket)

   {
   {

-    *m_state = m_new_val;  // Change the value
-  }
-};
-
-wxUint32 wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)
-{
-  // Timer for timeout
-  _wxSocketInternalTimer timer;
-
-  //wxLogMessage("Entrando a DeferRead, nbytes = %d", nbytes);
-  wxASSERT(m_defering == NO_DEFER);
-
-  // Set the defering mode to READ.
-  m_defering = DEFER_READ;
-
-  // Set the current buffer.
-  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);
+    // Disable callbacks
+    GSocket_UnsetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                    GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG);

 
 

-  // 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();
+    // Shutdown the connection
+    GSocket_Shutdown(m_socket);

   }
 
   }
 

-  // Wait for buffer completion.
-  while (m_defer_buffer != NULL)
-    PROCESS_EVENTS();
-
-  timer.Stop();
-
-  // Disable defering mode.
-  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;
+  m_connected = FALSE;
+  m_establishing = FALSE;
+  return TRUE;

 }
 
 }
 

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

 {
   // Mask read events
   m_reading = TRUE;
 
   m_lcount = _Read(buffer, nbytes);
 
 {
   // Mask read events
   m_reading = TRUE;
 
   m_lcount = _Read(buffer, nbytes);
 

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

-  // Trigger another read event if there is still data available.
+  // Allow read events from now on

   m_reading = FALSE;
   m_reading = FALSE;

-  // TODO: TriggerRead

 
   return *this;
 }
 
 
   return *this;
 }
 

-wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
+wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes)

 {
   int total;
   int ret = 1;
 
 {
   int total;
   int ret = 1;
 

-  // we try this even if the connection has already been closed.
+  // Try the pushback buffer first

   total = GetPushback(buffer, nbytes, FALSE);
   nbytes -= total;
   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)
+  buffer  = (char *)buffer + total;
+
+  // Return now in one of the following cases:
+  // - the socket is invalid,
+  // - we got all the data,
+  // - we got *some* data and we are not using wxSOCKET_WAITALL.
+  if ( !m_socket ||
+       !nbytes ||
+       ((total != 0) && !(m_flags & wxSOCKET_WAITALL)) )

     return total;
 
   // Possible combinations (they are checked in this order)
     return total;
 
   // Possible combinations (they are checked in this order)

-  // NOWAIT
-  // SPEED | WAITALL
-  // SPEED
-  // WAITALL
-  // NONE
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE

   //
   //

-  if (m_flags & NOWAIT)                 // NOWAIT
+  if (m_flags & wxSOCKET_NOWAIT)

   {
   {

-    GSocket_SetNonBlocking(m_socket, TRUE);
-    ret = GSocket_Read(m_socket, buffer, nbytes);
-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 1);
+    ret = GSocket_Read(m_socket, (char *)buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, 0);

 
     if (ret > 0)
       total += ret;
   }
 
     if (ret > 0)
       total += ret;
   }

-  else if ((m_flags & SPEED) && (m_flags & WAITALL))    // SPEED, WAITALL
+  else

   {
   {

-    while (ret > 0 && nbytes > 0)
+    bool more = TRUE;
+
+    while (more)

     {
     {

-      ret = GSocket_Read(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_Read(m_socket, buffer, nbytes);
+      if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() )
+        break;

 
 

-    if (ret > 0)
-      total += ret;
-  }
-  else                                  // NONE or WAITALL
-  {
-    ret = DeferRead(buffer, nbytes);
+      ret = GSocket_Read(m_socket, (char *)buffer, nbytes);

 
 

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

   }
 
   return total;
 }
 
   }
 
   return total;
 }
 

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

 {
 {

-#define MAX_DISCARD_SIZE (10 * 1024)
-

   wxUint32 len, len2, sig, total;
   bool error;
   int old_flags;
   wxUint32 len, len2, sig, total;
   bool error;
   int old_flags;


@@ -304,9 +379,9 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
   total = 0;
   error = TRUE;
   old_flags = m_flags;
   total = 0;
   error = TRUE;
   old_flags = m_flags;

-  SetFlags((m_flags & SPEED) | WAITALL);
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);

 
 

-  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))

     goto exit;
 
   sig = (wxUint32)msg.sig[0];
     goto exit;
 
   sig = (wxUint32)msg.sig[0];


@@ -316,7 +391,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
 
   if (sig != 0xfeeddead)
   {
 
   if (sig != 0xfeeddead)
   {

-    wxLogMessage(T("Warning: invalid signature returned to ReadMsg"));
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));

     goto exit;
   }
 
     goto exit;
   }
 


@@ -325,9 +400,6 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
   len |= (wxUint32)(msg.len[2] << 16);
   len |= (wxUint32)(msg.len[3] << 24);
 
   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;
   if (len > nbytes)
   {
     len2 = len - nbytes;


@@ -336,8 +408,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
   else
     len2 = 0;
 
   else
     len2 = 0;
 

-  // This check is necessary so that we don't attemp to read if
-  // the msg was zero bytes long.
+  // Don't attemp to read if the msg was zero bytes long.

   if (len)
   {
     total = _Read(buffer, len);
   if (len)
   {
     total = _Read(buffer, len);


@@ -354,8 +425,8 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
     do
     {
       discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);
     do
     {
       discard_len = ((len2 > MAX_DISCARD_SIZE)? MAX_DISCARD_SIZE : len2);

-      discard_len = _Read(discard_buffer, discard_len);
-      len2 -= discard_len;
+      discard_len = _Read(discard_buffer, (wxUint32)discard_len);
+      len2 -= (wxUint32)discard_len;

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


@@ -364,7 +435,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
     if (len2 != 0)
       goto exit;
   }
     if (len2 != 0)
       goto exit;
   }

-  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))

     goto exit;
 
   sig = (wxUint32)msg.sig[0];
     goto exit;
 
   sig = (wxUint32)msg.sig[0];


@@ -374,7 +445,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
 
   if (sig != 0xdeadfeed)
   {
 
   if (sig != 0xdeadfeed)
   {

-    //wxLogMessage(T("Warning: invalid signature returned to ReadMsg"));
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));

     goto exit;
   }
 
     goto exit;
   }
 


@@ -387,159 +458,108 @@ exit:
   m_reading = FALSE;
   SetFlags(old_flags);
 
   m_reading = FALSE;
   SetFlags(old_flags);
 

-  // TODO: TriggerRead

   return *this;
   return *this;

-
-#undef MAX_DISCARD_SIZE

 }
 
 }
 

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

 {
   // Mask read events
   m_reading = TRUE;
 
   m_lcount = _Read(buffer, nbytes);
 {
   // Mask read events
   m_reading = TRUE;
 
   m_lcount = _Read(buffer, nbytes);

-  Pushback(buffer, nbytes);
+  Pushback(buffer, m_lcount);

 
 

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

-  // Trigger another read event if there is still data available.
+  // Allow read events again

   m_reading = FALSE;
 
   m_reading = FALSE;
 

-  // TODO: TriggerRead

   return *this;
 }
 
   return *this;
 }
 

-wxUint32 wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes)
-{
-  // Timer for timeout
-  _wxSocketInternalTimer timer;
-
-  wxASSERT(m_defering == NO_DEFER);
-  //wxLogMessage("Entrando a DeferWrite");
-
-  m_defering = DEFER_WRITE;
-
-  // Set the current buffer
-  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)
-    PROCESS_EVENTS();
-
-  timer.Stop();
-
-  // Disable defering mode
-  m_defer_timer = NULL;
-  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;
-}
-
-wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)

 {
   // Mask write events
   m_writing = TRUE;
 
   m_lcount = _Write(buffer, nbytes);
 
 {
   // Mask write events
   m_writing = TRUE;
 
   m_lcount = _Write(buffer, nbytes);
 

-  // If in WAITALL mode, all bytes should have been written.
-  if (m_flags & WAITALL)
+  // 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_error = (m_lcount != nbytes);
   else
     m_error = (m_lcount == 0);
 

-  // Trigger another write event if the socket is still writable
+  // Allow write events again

   m_writing = FALSE;
 
   m_writing = FALSE;
 

-  // TODO: TriggerWrite

   return *this;
 }
 
   return *this;
 }
 

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

 {
   wxUint32 total = 0;
   int ret = 1;
 
 {
   wxUint32 total = 0;
   int ret = 1;
 

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

     return 0;
 
   // Possible combinations (they are checked in this order)
     return 0;
 
   // Possible combinations (they are checked in this order)

-  // NOWAIT
-  // SPEED | WAITALL
-  // SPEED
-  // WAITALL
-  // NONE
+  // wxSOCKET_NOWAIT
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
+  // wxSOCKET_BLOCK
+  // wxSOCKET_NONE

   //
   //

-  if (m_flags & NOWAIT)                 // NOWAIT
+  if (m_flags & wxSOCKET_NOWAIT)

   {
   {

-    GSocket_SetNonBlocking(m_socket, TRUE);
-    ret = GSocket_Write(m_socket, buffer, nbytes);
-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 1);
+    ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, 0);

 
     if (ret > 0)
       total = ret;
   }
 
     if (ret > 0)
       total = ret;
   }

-  else if ((m_flags & SPEED) && (m_flags & WAITALL))    // SPEED, WAITALL
+  else

   {
   {

-    while (ret > 0 && nbytes > 0)
+    bool more = TRUE;
+
+    while (more)

     {
     {

-      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 ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
+        break;

 
 

-    if (ret > 0)
-      total = ret;
-  }
-  else                                  // NONE or WAITALL
-  {
-    ret = DeferWrite(buffer, nbytes);
+      ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);

 
 

-    if (ret > 0)
-      total = ret;
+      if (ret > 0)
+      {
+        total  += ret;
+        nbytes -= ret;
+        buffer  = (const char *)buffer + ret;
+      }
+
+      // If we got here and wxSOCKET_WAITALL is not set, we can leave
+      // now. Otherwise, wait until we send all the data or until there
+      // is an error.
+      //
+      more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));
+    }

   }
 
   return total;
 }
 
   }
 
   return total;
 }
 

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

 {
   wxUint32 total;
   bool error;
   int old_flags;
 {
   wxUint32 total;
   bool error;
   int old_flags;

-  struct {
+  struct
+  {

     unsigned char sig[4];
     unsigned char len[4];
   } msg;
     unsigned char sig[4];
     unsigned char len[4];
   } msg;


@@ -550,32 +570,19 @@ wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
   error = TRUE;
   total = 0;
   old_flags = m_flags;
   error = TRUE;
   total = 0;
   old_flags = m_flags;

-  SetFlags((m_flags & SPEED) | WAITALL);
-
-  // warning about 'cast truncates constant value'
-#ifdef __VISUALC__
-#  pragma warning(disable: 4310)
-#endif // __VISUALC__
+  SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);

 
   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.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
-  //  );
+  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);

 
 

-  if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg))
+  if (_Write(&msg, sizeof(msg)) < sizeof(msg))

     goto exit;
 
   total = _Write(buffer, nbytes);
     goto exit;
 
   total = _Write(buffer, nbytes);


@@ -589,7 +596,7 @@ wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
   msg.sig[3] = (unsigned char) 0xde;
   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
 
   msg.sig[3] = (unsigned char) 0xde;
   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
 

-  if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg))
+  if ((_Write(&msg, sizeof(msg))) < sizeof(msg))

     goto exit;
 
   // everything was OK
     goto exit;
 
   // everything was OK


@@ -600,15 +607,10 @@ exit:
   m_lcount = total;
   m_writing = FALSE;
 
   m_lcount = total;
   m_writing = FALSE;
 

-  // TODO: TriggerWrite

   return *this;
   return *this;

-
-#ifdef __VISUALC__
-#  pragma warning(default: 4310)
-#endif // __VISUALC__

 }
 
 }
 

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

 {
   if (nbytes != 0)
     Pushback(buffer, nbytes);
 {
   if (nbytes != 0)
     Pushback(buffer, nbytes);


@@ -619,242 +621,112 @@ wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes)
   return *this;
 }
 
   return *this;
 }
 

-void wxSocketBase::DoDefer()
-{
-  int ret;
-
-  if (!m_defer_buffer)
-    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;
-  }
-
-  if (ret >= 0)
-    m_defer_nbytes -= ret;
-
-  // 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;
-  }
-  else
-  {
-    m_defer_buffer += ret;
-    m_defer_timer->Start(m_timeout * 1000, FALSE);
-  }
-
-  //wxLogMessage("DoDefer ha transferido %d bytes", ret);
-}
-

 wxSocketBase& wxSocketBase::Discard()
 {
 wxSocketBase& wxSocketBase::Discard()
 {

-#define MAX_BUFSIZE (10*1024)
-

   int old_flags;
   int old_flags;

-  char *my_data = new char[MAX_BUFSIZE];
-  wxUint32 recv_size = MAX_BUFSIZE;
+  char *buffer = new char[MAX_DISCARD_SIZE];
+  wxUint32 ret;

   wxUint32 total = 0;
 
   // Mask read events
   m_reading = TRUE;
 
   old_flags = m_flags;
   wxUint32 total = 0;
 
   // Mask read events
   m_reading = TRUE;
 
   old_flags = m_flags;

-  SetFlags(NOWAIT);
+  SetFlags(wxSOCKET_NOWAIT);

 
 

-  while (recv_size == MAX_BUFSIZE)
+  do

   {
   {

-    recv_size = _Read(my_data, MAX_BUFSIZE);
-    total += recv_size;
+    ret = _Read(buffer, MAX_DISCARD_SIZE);
+    total += ret;

   }
   }

+  while (ret == MAX_DISCARD_SIZE);

 
 

-  delete [] my_data;
+  delete[] buffer;

   m_lcount = total;
   m_lcount = total;

-  m_error = FALSE;
+  m_error  = FALSE;

 
 

-  // Trigger another read event if there is still data available.
+  // Allow read events again

   m_reading = FALSE;
 
   m_reading = FALSE;
 

-  // TODO: TriggerRead

   return *this;
   return *this;

-
-#undef MAX_BUFSIZE
-}
-
-// --------------------------------------------------------------
-// wxSocketBase get local or peer addresses
-// --------------------------------------------------------------
-
-bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
-{
-  GAddress *peer;
-
-  if (!m_socket)
-    return FALSE;
-
-  peer = GSocket_GetPeer(m_socket);
-  addr_man.SetAddress(peer);
-  GAddress_destroy(peer);
-
-  return TRUE;
-}
-
-bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
-{
-  GAddress *local;
-
-  if (!m_socket)
-    return FALSE;
-
-  local = GSocket_GetLocal(m_socket);
-  addr_man.SetAddress(local);
-  GAddress_destroy(local);
-
-  return TRUE;
-}
-
-// --------------------------------------------------------------
-// wxSocketBase save and restore socket state
-// --------------------------------------------------------------
-
-void wxSocketBase::SaveState()
-{
-  wxSocketState *state;
-
-  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;
-
-  m_states.Append(state);
-}
-
-void wxSocketBase::RestoreState()
-{
-  wxNode *node;
-  wxSocketState *state;
-
-  node = m_states.Last();
-  if (!node)
-    return;
-
-  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);
-
-  delete node;
-  delete state;

 }
 
 }
 

+// --------------------------------------------------------------------------
+// Wait functions
+// --------------------------------------------------------------------------

 
 

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

 
 

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

 {
   GSocketEventFlags result;
 {
   GSocketEventFlags result;

-  _wxSocketInternalTimer timer;

   long timeout;
   long timeout;

-  int state = -1;
+
+  // Set this to TRUE to interrupt ongoing waits
+  m_interrupt = FALSE;

 
   // Check for valid socket
   if (!m_socket)
     return FALSE;
 
 
   // Check for valid socket
   if (!m_socket)
     return FALSE;
 

-  // If it is not a server, it must be connected or establishing connection
-  if ((m_type != SOCK_SERVER) && (!m_connected && !m_establishing))
-    return FALSE;
-
-  // Check for valid timeout value
+  // Check for valid timeout value.

   if (seconds != -1)
     timeout = seconds * 1000 + milliseconds;
   else
     timeout = m_timeout * 1000;
 
   if (seconds != -1)
     timeout = seconds * 1000 + milliseconds;
   else
     timeout = m_timeout * 1000;
 

-  // Activate timer
-  if (timeout)
-  {
-    timer.m_state = &state;
-    timer.m_new_val = 0;
-    timer.Start(timeout, TRUE);
-  }
-
-  // Active polling (without using events)
+  // Wait in an active polling loop.

   //
   //

-  // 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.
+  // NOTE: We duplicate some of the code in OnRequest, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in OnRequest as well because we
+  //   don't know whether the Wait functions are being used.

   //
   // Do this at least once (important if timeout == 0, when
   //
   // Do this at least once (important if timeout == 0, when

-  // we are just polling)
-  do
+  // we are just polling). Also, if just polling, do not yield.
+
+  wxStopWatch chrono;
+  bool done = FALSE;
+
+  while (!done)

   {
     result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);
 
   {
     result = GSocket_Select(m_socket, flags | GSOCK_LOST_FLAG);
 

-    // 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)
     {
     // Incoming connection (server) or connection established (client)
     if (result & GSOCK_CONNECTION_FLAG)
     {

-      timer.Stop();

       m_connected = TRUE;
       m_establishing = FALSE;
       return TRUE;
     }
 
       m_connected = TRUE;
       m_establishing = FALSE;
       return TRUE;
     }
 

-    // 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) )
+    // Data available or output buffer ready
+    if ((result & GSOCK_INPUT_FLAG) || (result & GSOCK_OUTPUT_FLAG))

     {
     {

-/* TODO: remove this
-      if (m_defer_buffer == NULL)
-*/
-      {
-        timer.Stop();
-        return TRUE;
-      }
+      return TRUE;

     }
 
     }
 

-    if (timeout != 0)
+    // Connection lost
+    if (result & GSOCK_LOST_FLAG)
+    {
+      m_connected = FALSE;
+      m_establishing = FALSE;
+      return (flags & GSOCK_LOST_FLAG) != 0;
+    }
+
+    // Wait more?
+    if ((!timeout) || (chrono.Time() > timeout) || (m_interrupt))
+      done = TRUE;
+    else

       PROCESS_EVENTS();
   }
       PROCESS_EVENTS();
   }

-  while ((state == -1) && timeout);

 
 

-  timer.Stop();

   return FALSE;
 }
 
   return FALSE;
 }
 


@@ -868,11 +740,17 @@ bool wxSocketBase::Wait(long seconds, long milliseconds)
 
 bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
 {
 
 bool wxSocketBase::WaitForRead(long seconds, long milliseconds)
 {

-  // Check pushback buffer
+  // Check pushback buffer before entering _Wait

   if (m_unread)
     return TRUE;
 
   if (m_unread)
     return TRUE;
 

-  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG);
+  // Note that GSOCK_INPUT_LOST has to be explicitly passed to
+  // _Wait becuase of the semantics of WaitForRead: a return
+  // value of TRUE means that a GSocket_Read call will return
+  // immediately, not that there is actually data to read.
+
+  return _Wait(seconds, milliseconds, GSOCK_INPUT_FLAG |
+                                      GSOCK_LOST_FLAG);

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


@@ -885,26 +763,117 @@ bool wxSocketBase::WaitForLost(long seconds, long milliseconds)
   return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
 }
 
   return _Wait(seconds, milliseconds, GSOCK_LOST_FLAG);
 }
 

+// --------------------------------------------------------------------------
+// Miscellaneous
+// --------------------------------------------------------------------------
+
+//
+// Get local or peer address
+//
+
+bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
+{
+  GAddress *peer;
+
+  if (!m_socket)
+    return FALSE;
+
+  peer = GSocket_GetPeer(m_socket);
+
+    // copying a null address would just trigger an assert anyway
+
+  if (!peer)
+    return FALSE;
+
+  addr_man.SetAddress(peer);
+  GAddress_destroy(peer);
+
+  return TRUE;
+}
+
+bool wxSocketBase::GetLocal(wxSockAddress& addr_man) const
+{
+  GAddress *local;
+
+  if (!m_socket)
+    return FALSE;
+
+  local = GSocket_GetLocal(m_socket);
+  addr_man.SetAddress(local);
+  GAddress_destroy(local);
+
+  return TRUE;
+}
+
+//
+// Save and restore socket state
+//
+
+void wxSocketBase::SaveState()
+{
+  wxSocketState *state;
+
+  state = new wxSocketState();
+
+  state->m_flags      = m_flags;
+  state->m_notify     = m_notify;
+  state->m_eventmask  = m_eventmask;
+  state->m_clientData = m_clientData;
+#if WXWIN_COMPATIBILITY
+  state->m_cbk        = m_cbk;
+  state->m_cdata      = m_cdata;
+#endif // WXWIN_COMPATIBILITY
+
+  m_states.Append(state);
+}
+
+void wxSocketBase::RestoreState()
+{
+  wxNode *node;
+  wxSocketState *state;
+
+  node = m_states.Last();
+  if (!node)
+    return;
+
+  state = (wxSocketState *)node->Data();
+
+  m_flags      = state->m_flags;
+  m_notify     = state->m_notify;
+  m_eventmask  = state->m_eventmask;
+  m_clientData = state->m_clientData;
+#if WXWIN_COMPATIBILITY
+  m_cbk        = state->m_cbk;
+  m_cdata      = state->m_cdata;
+#endif // WXWIN_COMPATIBILITY
+
+  delete node;
+  delete state;
+}
+
+//
+// Timeout and flags
+//
+

 void wxSocketBase::SetTimeout(long seconds)
 {
   m_timeout = seconds;
 
   if (m_socket)
 void wxSocketBase::SetTimeout(long seconds)
 {
   m_timeout = seconds;
 
   if (m_socket)

-    GSocket_SetTimeout(m_socket, m_timeout);
+    GSocket_SetTimeout(m_socket, m_timeout * 1000);

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase flags
-// --------------------------------------------------------------
-
-void wxSocketBase::SetFlags(wxSockFlags _flags)
+void wxSocketBase::SetFlags(wxSocketFlags flags)

 {
 {

-  m_flags = _flags;
+  m_flags = flags;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase callback management
-// --------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Callbacks (now obsolete - use events instead)
+// --------------------------------------------------------------------------
+
+#if WXWIN_COMPATIBILITY

 
 wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
 {
 
 wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
 {


@@ -922,130 +891,142 @@ char *wxSocketBase::CallbackData(char *data)
   return old_data;
 }
 
   return old_data;
 }
 

-// --------------------------------------------------------------
-// wxSocketBase automatic notifier
-// --------------------------------------------------------------
+#endif // WXWIN_COMPATIBILITY

 
 

-// All events (INPUT, OUTPUT, CONNECTION, LOST) are now always
-// internally watched; but users will only be notified of those
-// events they are interested in.
+// --------------------------------------------------------------------------
+// Event handling
+// --------------------------------------------------------------------------

 
 

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

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

-  sckobj->OnRequest((wxSocketNotify)event);
-}
-
-wxSocketEventFlags wxSocketBase::EventToNotify(wxSocketNotify evt)
-{
-  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;
-}
-
-void wxSocketBase::SetNotify(wxSocketEventFlags flags)
-{
-  m_neededreq = flags;
-}
-
-void wxSocketBase::Notify(bool notify)
-{
-  m_notify_state = notify;
+  sckobj->OnRequest((wxSocketNotify) notification);

 }
 
 }
 

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

 {
 {

-  wxSocketEvent event(m_id);
-  wxSocketEventFlags flag = EventToNotify(req_evt);
+  // NOTE: We duplicate some of the code in _Wait, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in _Wait as well because we don't
+  //   know whether the Wait functions are being used.

 
 

-  // 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)
+  switch(notification)

   {
     case wxSOCKET_CONNECTION:
       m_establishing = FALSE;
       m_connected = TRUE;
       break;
   {
     case wxSOCKET_CONNECTION:
       m_establishing = FALSE;
       m_connected = TRUE;
       break;

-    case wxSOCKET_LOST:
-      m_defer_buffer = NULL;
-      Close();
-      break;
+
+    // If we are in the middle of a R/W operation, do not
+    // propagate events to users. Also, filter 'late' events
+    // which are no longer valid.
+

     case wxSOCKET_INPUT:
     case wxSOCKET_INPUT:

+      if (m_reading || !GSocket_Select(m_socket, GSOCK_INPUT_FLAG))
+        return;
+      break;
+

     case wxSOCKET_OUTPUT:
     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
+      if (m_writing || !GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG))

         return;
         return;

-      }
+      break;
+
+    case wxSOCKET_LOST:
+      m_connected = FALSE;
+      m_establishing = FALSE;
+      break;
+
+    default:

       break;
   }
 
       break;
   }
 

-  // 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))
+  // Schedule the event
+
+  wxSocketEventFlags flag = 0;
+  switch (notification)

   {
   {

-    // fprintf(stderr, "%s: Swallowed evt %d\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
-    return;
+    case GSOCK_INPUT:      flag = GSOCK_INPUT_FLAG; break;
+    case GSOCK_OUTPUT:     flag = GSOCK_OUTPUT_FLAG; break;
+    case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break;
+    case GSOCK_LOST:       flag = GSOCK_LOST_FLAG; break;
+    default:
+      wxLogWarning(_("wxSocket: unknown event!."));
+      return;

   }
 
   }
 

-  if (((m_neededreq & flag) == flag) && m_notify_state)
+  if (((m_eventmask & flag) == flag) && m_notify)

   {
   {

-    // fprintf(stderr, "%s: Evt %d delivered\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
-    event.m_socket = this;
-    event.m_skevt  = req_evt;
-    ProcessEvent(event);
-    OldOnNotify(req_evt);
+    if (m_handler)
+    {
+      wxSocketEvent event(m_id);
+      event.m_event      = notification;
+      event.m_clientData = m_clientData;
+      event.SetEventObject(this);
+
+      m_handler->AddPendingEvent(event);
+    }

 
 

+#if WXWIN_COMPATIBILITY

     if (m_cbk)
     if (m_cbk)

-      m_cbk(*this, req_evt, m_cdata);
+      m_cbk(*this, notification, m_cdata);
+#endif // WXWIN_COMPATIBILITY

   }
   }

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

 }
 
 }
 

-void wxSocketBase::OldOnNotify(wxSocketNotify WXUNUSED(evt))
+void wxSocketBase::Notify(bool notify)

 {
 {

+  m_notify = notify;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase set event handler
-// --------------------------------------------------------------
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+  m_eventmask = flags;
+}

 
 

-void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
+void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)

 {
 {

-  SetNextHandler(&h_evt);
-  m_id = id;
+  m_handler = &handler;
+  m_id      = id;

 }
 
 }
 

-// --------------------------------------------------------------
-// wxSocketBase pushback
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Pushback buffer
+// --------------------------------------------------------------------------

 
 

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

 {
 {

+  if (!size) return;
+

   if (m_unread == NULL)
   if (m_unread == NULL)

-    m_unread = (char *)malloc(size);
-  else {
-    char *tmp;
+    m_unread = malloc(size);
+  else
+  {
+    void *tmp;

 
 

-    tmp = (char *)malloc(m_unrd_size + size);
-    memcpy(tmp+size, m_unread, m_unrd_size);
+    tmp = malloc(m_unrd_size + size);
+    memcpy((char *)tmp + size, m_unread, m_unrd_size);

     free(m_unread);
 
     m_unread = tmp;
     free(m_unread);
 
     m_unread = tmp;


@@ -1056,7 +1037,7 @@ void wxSocketBase::Pushback(const char *buffer, wxUint32 size)
   memcpy(m_unread, buffer, size);
 }
 
   memcpy(m_unread, buffer, size);
 }
 

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

 {
   if (!m_unrd_size)
     return 0;
 {
   if (!m_unrd_size)
     return 0;


@@ -1064,11 +1045,13 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
   if (size > (m_unrd_size-m_unrd_cur))
     size = m_unrd_size-m_unrd_cur;
 
   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, (char *)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;


@@ -1079,43 +1062,50 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
   return size;
 }
 
   return size;
 }
 

-// --------------------------------------------------------------
+
+// ==========================================================================

 // wxSocketServer
 // wxSocketServer

-// --------------------------------------------------------------
+// ==========================================================================

 
 

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

 
 wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
 
 wxSocketServer::wxSocketServer(wxSockAddress& addr_man,

-             wxSockFlags flags) :
-  wxSocketBase(flags, SOCK_SERVER)
+                               wxSocketFlags flags)
+              : wxSocketBase(flags, wxSOCKET_SERVER)

 {
 {

-  // Create the socket
-  m_socket = GSocket_new();
+    wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );

 
 

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

 
 

-  // Setup the socket as server
-  GSocket_SetLocal(m_socket, addr_man.GetAddress());
-  if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
-  {
-    GSocket_destroy(m_socket);
-    m_socket = NULL;
-    return;
-  }
+    if (!m_socket)
+    {
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") );
+        return;
+    }

 
 

-  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);
+        // Setup the socket as server

 
 

+    GSocket_SetLocal(m_socket, addr_man.GetAddress());
+    if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
+    {
+        GSocket_destroy(m_socket);
+        m_socket = NULL;
+
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") );
+        return;
+    }
+
+    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
-// --------------------------------------------------------------
+// --------------------------------------------------------------------------
+// Accept
+// --------------------------------------------------------------------------

 
 bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
 {
 
 bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
 {


@@ -1124,27 +1114,26 @@ bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
   if (!m_socket)
     return FALSE;
 
   if (!m_socket)
     return FALSE;
 

-  // GRG: If wait == FALSE, then the call should be nonblocking.
+  // If wait == FALSE, then the call should be nonblocking.

   // When we are finished, we put the socket to blocking mode
   // again.
 
   if (!wait)
   // When we are finished, we put the socket to blocking mode
   // again.
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, TRUE);
+    GSocket_SetNonBlocking(m_socket, 1);

 
   child_socket = GSocket_WaitConnection(m_socket);
 
   if (!wait)
 
   child_socket = GSocket_WaitConnection(m_socket);
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 0);

 
 

-  // GRG: this was not being handled!
-  if (child_socket == NULL)
+  if (!child_socket)

     return FALSE;
 
     return FALSE;
 

-  sock.m_type = SOCK_INTERNAL;
+  sock.m_type = wxSOCKET_BASE;

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

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


@@ -1156,10 +1145,13 @@ wxSocketBase *wxSocketServer::Accept(bool wait)
 {
   wxSocketBase* sock = new wxSocketBase();
 
 {
   wxSocketBase* sock = new wxSocketBase();
 

-  sock->SetFlags((wxSockFlags)m_flags);
+  sock->SetFlags(m_flags);

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

-    return NULL;
+  {
+    sock->Destroy();
+    sock = NULL;
+  }

 
   return sock;
 }
 
   return sock;
 }


@@ -1169,16 +1161,16 @@ bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
   return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
 }
 
   return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
 }
 

-// --------------------------------------------------------------
+// ==========================================================================

 // wxSocketClient
 // wxSocketClient

-// --------------------------------------------------------------
+// ==========================================================================

 
 

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

 
 

-wxSocketClient::wxSocketClient(wxSockFlags _flags) :
-  wxSocketBase(_flags, SOCK_CLIENT)
+wxSocketClient::wxSocketClient(wxSocketFlags flags)
+              : wxSocketBase(flags, wxSOCKET_CLIENT)

 {
 }
 
 {
 }
 


@@ -1186,21 +1178,21 @@ wxSocketClient::~wxSocketClient()
 {
 }
 
 {
 }
 

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

 bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
 {
   GSocketError err;
 
 bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
 {
   GSocketError err;
 

-  if (IsConnected())
-    Close();
-
-  // This should never happen.

   if (m_socket)
   if (m_socket)

+  {
+    // Shutdown and destroy the socket
+    Close();

     GSocket_destroy(m_socket);
     GSocket_destroy(m_socket);

+  }

 
 

-  // Initialize all socket stuff ...

   m_socket = GSocket_new();
   m_connected = FALSE;
   m_establishing = FALSE;
   m_socket = GSocket_new();
   m_connected = FALSE;
   m_establishing = FALSE;


@@ -1208,23 +1200,23 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
   if (!m_socket)
     return FALSE;
 
   if (!m_socket)
     return FALSE;
 

-  GSocket_SetTimeout(m_socket, m_timeout);
+  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);
 
   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.
+  // If wait == FALSE, then the call should be nonblocking.

   // When we are finished, we put the socket to blocking mode
   // again.
 
   if (!wait)
   // When we are finished, we put the socket to blocking mode
   // again.
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, TRUE);
+    GSocket_SetNonBlocking(m_socket, 1);

 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
 
   if (!wait)
 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 0);

 
   if (err != GSOCK_NOERROR)
   {
 
   if (err != GSOCK_NOERROR)
   {


@@ -1246,46 +1238,89 @@ bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
   if (!m_establishing || !m_socket)     // No connection in progress
     return FALSE;
 
   if (!m_establishing || !m_socket)     // No connection in progress
     return FALSE;
 

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

 }
 
 }
 

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

 
 

-wxSocketEvent::wxSocketEvent(int id)
-  : wxEvent(id)
+wxDatagramSocket::wxDatagramSocket( wxSockAddress& addr,
+                                    wxSocketFlags flags )
+                : wxSocketBase( flags, wxSOCKET_DATAGRAM )

 {
 {

-  wxEventType type = (wxEventType)wxEVT_SOCKET;
+  // 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 )
+  {
+    GSocket_destroy(m_socket);
+    m_socket = NULL;
+    return;
+  }
+
+  // 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 );

 
 

-  SetEventType(type);

 }
 
 }
 

-void wxSocketEvent::CopyObject(wxObject& obj_d) const
+wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
+                                              void* buf,
+                                              wxUint32 nBytes )

 {
 {

-  wxSocketEvent *event = (wxSocketEvent *)&obj_d;
-
-  wxEvent::CopyObject(obj_d);
+    Read(buf, nBytes);
+    GetPeer(addr);
+    return (*this);
+}

 
 

-  event->m_skevt = m_skevt;
-  event->m_socket = m_socket;
+wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
+                                            const void* buf,
+                                            wxUint32 nBytes )
+{
+    GSocket_SetPeer(m_socket, addr.GetAddress());
+    Write(buf, nBytes);
+    return (*this);

 }
 
 }
 

-// --------------------------------------------------------------------------
+// ==========================================================================

 // wxSocketModule
 // wxSocketModule

-// --------------------------------------------------------------------------
-class WXDLLEXPORT wxSocketModule: public wxModule {
-  DECLARE_DYNAMIC_CLASS(wxSocketModule)
- public:
-  bool OnInit() {
-    return GSocket_Init();
-  }
-  void OnExit() {
-    GSocket_Cleanup();
-  }
+// ==========================================================================
+
+class WXDLLEXPORT wxSocketModule : public wxModule
+{
+public:
+    virtual bool OnInit()
+    {
+        // wxSocketBase will call GSocket_Init() itself when/if needed
+        return TRUE;
+    }
+
+    virtual void OnExit()
+    {
+        if ( wxSocketBase::IsInitialized() )
+            wxSocketBase::Shutdown();
+    }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxSocketModule)

 };
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
 
 #endif
   // wxUSE_SOCKETS
 };
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
 
 #endif
   // wxUSE_SOCKETS

+
+// vi:sts=4:sw=4:et