1. undid my wrong fix to wxWindowBase::Centre

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

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 26bfa784b56c08cb9279d77850c2606ebff5741a..0f7a63316572f5aa12582fd38cc4dd34d8598285 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -3,8 +3,9 @@
 // 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:    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
 /////////////////////////////////////////////////////////////////////////////


@@ -43,6 +44,15 @@
 #include "wx/sckaddr.h"
 #include "wx/socket.h"
 
 #include "wx/sckaddr.h"
 #include "wx/socket.h"
 

+
+#if defined(__WXMSW__) || defined(__WXPM__) || defined(__WXMOTIF__) || defined(__WXMAC__)
+    #define PROCESS_EVENTS() wxYield()
+#elif defined(__WXGTK__)
+    #include <gtk/gtk.h>
+    #define PROCESS_EVENTS() gtk_main_iteration()
+#endif
+
+

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


@@ -58,7 +68,7 @@ class wxSocketState : public wxObject
 public:
   bool notify_state;
   GSocketEventFlags evt_notify_state;
 public:
   bool notify_state;
   GSocketEventFlags evt_notify_state;

-  wxSocketBase::wxSockFlags socket_flags;
+  wxSockFlags socket_flags;

   wxSocketBase::wxSockCbk c_callback;
   char *c_callback_data;
 
   wxSocketBase::wxSockCbk c_callback;
   char *c_callback_data;
 


@@ -70,32 +80,31 @@ public:
 // wxSocketBase ctor and dtor
 // --------------------------------------------------------------
 
 // wxSocketBase ctor and dtor
 // --------------------------------------------------------------
 

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

   wxEvtHandler(),
   wxEvtHandler(),

-  m_socket(NULL), m_flags(_flags), m_type(_type),
-  m_neededreq(0),
-  m_lcount(0), m_timeout(600),
-  m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
-  m_cbk(NULL), m_cdata(NULL),
+  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_connected(FALSE), m_establishing(FALSE),

-  m_notify_state(FALSE), m_id(-1),
-  m_defering(NO_DEFER), m_error(FALSE),
-  m_states()
+  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::wxSocketBase() :
   wxEvtHandler(),
 {
 }
 
 wxSocketBase::wxSocketBase() :
   wxEvtHandler(),

-  m_socket(NULL), m_flags(WAITALL | SPEED), m_type(SOCK_UNINIT),
-  m_neededreq(0),
-  m_lcount(0), m_timeout(600),
-  m_unread(NULL), m_unrd_size(0), m_unrd_cur(0),
-  m_cbk(NULL), m_cdata(NULL),
+  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_connected(FALSE), m_establishing(FALSE),

-  m_notify_state(FALSE), m_id(-1),
-  m_defering(NO_DEFER), m_error(FALSE),
-  m_states()
+  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)

 {
 }
 
 {
 }
 


@@ -133,20 +142,10 @@ bool wxSocketBase::Close()
 // wxSocketBase basic IO operations
 // --------------------------------------------------------------
 
 // wxSocketBase basic IO operations
 // --------------------------------------------------------------
 

-// GRG: I have made some changes to wxSocket internal event
-// system; now, all events (INPUT, OUTPUT, CONNECTION, LOST)
-// are always internally monitored; but users will only be
-// notified of these events they are interested in. So we
-// no longer have to change the event mask with SetNotify()
-// in internal functions like DeferRead, DeferWrite, and
-// the like. This solves a lot of problems.
-
-// GRG: I added m_error handling to IO operations. Now,
-// wxSocketBase::Error() correctly indicates if the last
-// operation from {Read, Write, ReadMsg, WriteMsg, Peek,
-// Unread, Discard} failed. Note that now, every function
-// that updates m_lcount, also updates m_error. While I
-// was at it, also fixed an UGLY bug in ReadMsg.
+// 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
 {
 
 class _wxSocketInternalTimer: public wxTimer
 {


@@ -160,11 +159,12 @@ public:
   }
 };
 
   }
 };
 

-int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)
+wxUint32 wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)

 {
   // Timer for timeout
   _wxSocketInternalTimer timer;
 
 {
   // Timer for timeout
   _wxSocketInternalTimer timer;
 

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

   wxASSERT(m_defering == NO_DEFER);
 
   // Set the defering mode to READ.
   wxASSERT(m_defering == NO_DEFER);
 
   // Set the defering mode to READ.


@@ -182,11 +182,14 @@ int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)
 
   // If the socket is readable, call DoDefer for the first time
   if (GSocket_Select(m_socket, GSOCK_INPUT_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();
     DoDefer();

+  }

 
 

-  // Wait for buffer completion. 
+  // Wait for buffer completion.

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

-    wxYield();
+    PROCESS_EVENTS();

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


@@ -195,115 +198,134 @@ int wxSocketBase::DeferRead(char *buffer, wxUint32 nbytes)
   m_defer_timer = NULL;
 
   // Return the number of bytes read from the socket.
   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;
 }
 
 wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
 {
   return nbytes-m_defer_nbytes;
 }
 
 wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
 {

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

 
 

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

 
 

-  // we try this even if the connection has already been closed.
-  m_lcount = GetPushback(buffer, nbytes, FALSE);
-  nbytes -= m_lcount;
-  buffer += m_lcount;
+  // 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 (!m_connected || !m_socket)
-  {
-    // if no data retrieved AND not connected, it is an error.
-    if (!m_lcount)
-      m_error = TRUE;
+  // Trigger another read event if there is still data available.
+  m_reading = FALSE;
+  // TODO: TriggerRead

 
 

-    return *this;
-  }
+  return *this;
+}
+
+wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
+{
+  int total;
+  int ret = 1;

 
 

-  // If we have got the whole needed buffer, return immediately
-  if (!nbytes)
+  // 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

   {
   {

-    return *this;
-  }
+    GSocket_SetNonBlocking(m_socket, TRUE);
+    ret = GSocket_Read(m_socket, buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, FALSE);

 
 

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

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

       buffer += ret;
       nbytes -= ret;
     }
     // In case the last call was an error ...
     if (ret < 0)
       buffer += ret;
       nbytes -= ret;
     }
     // In case the last call was an error ...
     if (ret < 0)

-      m_lcount ++;
+      total++;

   }
   }

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

   {
     ret = GSocket_Read(m_socket, buffer, nbytes);
 
     if (ret > 0)
   {
     ret = GSocket_Read(m_socket, buffer, nbytes);
 
     if (ret > 0)

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

   }
   }

-  else                              // !SPEED
+  else                                  // NONE or WAITALL

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

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

   }
 
   }
 

-  // If we have read some data, then it is not an error, even
-  // when in WAITALL mode, the last low-level IO call might
-  // have failed.
-  if (!m_lcount)
-    m_error = TRUE;
-
-  return *this;
+  return total;

 }
 
 wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
 {
 }
 
 wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
 {

-#define MAX_BUFSIZE (10 * 1024)
+#define MAX_DISCARD_SIZE (10 * 1024)

 
 

+  wxUint32 len, len2, sig, total;
+  bool error;

   int old_flags;
   int old_flags;

-  unsigned long len, len2, sig;

   struct
   {
   struct
   {

-    char sig[4];
-    char len[4];
+    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 wxUint32 was actually a 16-bit unsigned integer
+  // Mask read events
+  m_reading = TRUE;

 
 

+  total = 0;
+  error = TRUE;

   old_flags = m_flags;
   old_flags = m_flags;

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

 
 

-  Read((char *)&msg, sizeof(msg));
-  if (m_lcount != sizeof(msg))
-  {
-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
-  }
+  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;

 
 

-  sig = msg.sig[0] & 0xff;
-  sig |= (wxUint32)(msg.sig[1] & 0xff) << 8;
-  sig |= (wxUint32)(msg.sig[2] & 0xff) << 16;
-  sig |= (wxUint32)(msg.sig[3] & 0xff) << 24;
+  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)
   {

-    wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n"));
-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
+    wxLogMessage(wxT("Warning: invalid signature returned to ReadMsg"));
+    goto exit;

   }
 
   }
 

-  len = msg.len[0] & 0xff;
-  len |= (wxUint32)(msg.len[1] & 0xff) << 8;
-  len |= (wxUint32)(msg.len[2] & 0xff) << 16;
-  len |= (wxUint32)(msg.len[3] & 0xff) << 24;
+  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)
   {
 
   if (len > nbytes)
   {


@@ -313,24 +335,25 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
   else
     len2 = 0;
 
   else
     len2 = 0;
 

-  // The "len &&" in the following statements 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)
+  // This check is necessary so that we don't attemp to read if
+  // the msg was zero bytes long.
+  if (len)

   {
   {

-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
+    total = _Read(buffer, len);
+
+    if (total != len)
+      goto exit;

   }
   if (len2)
   {
   }
   if (len2)
   {

-    char *discard_buffer = new char[MAX_BUFSIZE];
+    char *discard_buffer = new char[MAX_DISCARD_SIZE];

     long discard_len;
 
     long discard_len;
 

+    // NOTE: discarded bytes don't add to m_lcount.

     do
     {
     do
     {

-      discard_len = ((len2 > MAX_BUFSIZE)? MAX_BUFSIZE : len2);
-      discard_len = Read(discard_buffer, discard_len).LastCount();
+      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);
       len2 -= discard_len;
     }
     while ((discard_len > 0) && len2);


@@ -338,50 +361,65 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
     delete [] discard_buffer;
 
     if (len2 != 0)
     delete [] discard_buffer;
 
     if (len2 != 0)

-    {
-      SetFlags(old_flags);
-      m_error = TRUE;
-      return *this;
-    }
-  }
-  if (Read((char *)&msg, sizeof(msg)).LastCount() != sizeof(msg))
-  {
-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
+      goto exit;

   }
   }

+  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+    goto exit;

 
 

-  sig = msg.sig[0] & 0xff;
-  sig |= (wxUint32)(msg.sig[1] & 0xff) << 8;
-  sig |= (wxUint32)(msg.sig[2] & 0xff) << 16;
-  sig |= (wxUint32)(msg.sig[3] & 0xff) << 24;
+  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)
   {

-    m_error = TRUE;
-    wxLogDebug(_T("Warning: invalid signature returned to ReadMsg\n"));
+    //wxLogMessage(wxT("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);
   SetFlags(old_flags);

+
+  // TODO: TriggerRead

   return *this;
 
   return *this;
 

-#undef MAX_BUFSIZE
+#undef MAX_DISCARD_SIZE

 }
 
 wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 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, wxUint32 nbytes)
+wxUint32 wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes)

 {
   // Timer for timeout
   _wxSocketInternalTimer timer;
 
   wxASSERT(m_defering == NO_DEFER);
 {
   // Timer for timeout
   _wxSocketInternalTimer timer;
 
   wxASSERT(m_defering == NO_DEFER);

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

 
   m_defering = DEFER_WRITE;
 
 
   m_defering = DEFER_WRITE;
 


@@ -398,153 +436,188 @@ int wxSocketBase::DeferWrite(const char *buffer, wxUint32 nbytes)
 
   // If the socket is writable, call DoDefer for the first time
   if (GSocket_Select(m_socket, GSOCK_OUTPUT_FLAG))
 
   // 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();
     DoDefer();

+  }

 
 

-  // Wait for buffer completion. 
+  // Wait for buffer completion.

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

-    wxYield();
+    PROCESS_EVENTS();

 
 

-  // Stop timer
-  m_defer_timer = NULL;

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

+  // Disable defering mode
+  m_defer_timer = NULL;

   m_defering = NO_DEFER;
 
   m_defering = NO_DEFER;
 

+  wxString s;
+  s.Printf(wxT("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)
 {
   return nbytes-m_defer_nbytes;
 }
 
 wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
 {

-  int ret = 1;
+  // Mask write events
+  m_writing = TRUE;

 
 

-  m_lcount = 0;
-  m_error = FALSE;
+  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
+    m_error = (m_lcount == 0);
+
+  // Trigger another write event if the socket is still writable
+  m_writing = FALSE;
+
+  // TODO: TriggerWrite
+  return *this;
+}
+
+wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes)
+{
+  wxUint32 total = 0;
+  int ret = 1;

 
   if (!m_connected || !m_socket)
 
   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

   {
   {

-    m_error = TRUE;
-    return *this;
-  }
+    GSocket_SetNonBlocking(m_socket, TRUE);
+    ret = GSocket_Write(m_socket, buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, FALSE);

 
 

-  if (m_flags & SPEED & WAITALL)    // SPEED && WAITALL
+    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);
   {
     while (ret > 0 && nbytes > 0)
     {
       ret = GSocket_Write(m_socket, buffer, nbytes);

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

       buffer += ret;
       nbytes -= ret;
     }
     // In case the last call was an error ...
     if (ret < 0)
       buffer += ret;
       nbytes -= ret;
     }
     // In case the last call was an error ...
     if (ret < 0)

-      m_lcount ++;
+      total ++;

   }
   }

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

   {
     ret = GSocket_Write(m_socket, buffer, nbytes);
 
     if (ret > 0)
   {
     ret = GSocket_Write(m_socket, buffer, nbytes);
 
     if (ret > 0)

-      m_lcount += ret;
+      total = ret;

   }
   }

-  else                              // !SPEED
+  else                                  // NONE or WAITALL

   {
     ret = DeferWrite(buffer, nbytes);
 
     if (ret > 0)
   {
     ret = DeferWrite(buffer, nbytes);
 
     if (ret > 0)

-      m_lcount += ret;
+      total = ret;

   }
 
   }
 

-  // If we have written some data, then it is not an error,
-  // even when in WAITALL mode, the last low-level IO call
-  // might have failed.
-  if (!m_lcount)
-    m_error = TRUE;
-
-  return *this;
+  return total;

 }
 
 wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
 {
 }
 
 wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
 {

+  wxUint32 total;
+  bool error;

   int old_flags;
   struct {
   int old_flags;
   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.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] = (char) nbytes & 0xff;
-  msg.len[1] = (char) (nbytes >> 8) & 0xff;
-  msg.len[2] = (char) (nbytes >> 16) & 0xff;
-  msg.len[3] = (char) (nbytes >> 24) & 0xff;
+  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;

 
 

-  // GRG: We need WAITALL | SPEED
-  old_flags = m_flags;
-  SetFlags(WAITALL | SPEED);
+  //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)).LastCount() < sizeof(msg))
-  {
-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
-  }
-  if (Write(buffer, nbytes).LastCount() < nbytes)
-  {
-    SetFlags(old_flags);
-    m_error = TRUE;
-    return *this;
-  }
+  if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg))
+    goto exit;
+
+  total = _Write(buffer, nbytes);

 
 

-  msg.sig[0] = (char) 0xed;
-  msg.sig[1] = (char) 0xfe;
-  msg.sig[2] = (char) 0xad;
-  msg.sig[3] = (char) 0xde;
+  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;
 

-  if (Write((char *)&msg, sizeof(msg)).LastCount() < sizeof(msg))
-    m_error = TRUE;
+  if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg))
+    goto exit;

 
 

-  SetFlags(old_flags);
+  // 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__
 }
 
 wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes)
 {
 #endif // __VISUALC__
 }
 
 wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes)
 {

-  m_error = FALSE;
-  m_lcount = 0;
-

   if (nbytes != 0)
   if (nbytes != 0)

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

 
 

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

 
 

-  return (GSocket_Select(m_socket, GSOCK_INPUT_FLAG));
+  return *this;

 }
 
 }
 

-// GRG: DoDefer() no longer needs to know which event occured,
-// because this was only used to catch LOST events and set
-// m_defer_buffer = NULL; this is done in OnRequest() now.
-

 void wxSocketBase::DoDefer()
 {
   int ret;
 void wxSocketBase::DoDefer()
 {
   int ret;


@@ -552,7 +625,7 @@ void wxSocketBase::DoDefer()
   if (!m_defer_buffer)
     return;
 
   if (!m_defer_buffer)
     return;
 

-  switch (m_defering)
+  switch(m_defering)

   {
     case DEFER_READ:
       ret = GSocket_Read(m_socket, m_defer_buffer, m_defer_nbytes);
   {
     case DEFER_READ:
       ret = GSocket_Read(m_socket, m_defer_buffer, m_defer_nbytes);


@@ -562,7 +635,6 @@ void wxSocketBase::DoDefer()
       break;
     default:
       ret = -1;
       break;
     default:
       ret = -1;

-      break;

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


@@ -570,7 +642,7 @@ void wxSocketBase::DoDefer()
 
   // If we are waiting for all bytes to be acquired, keep the defering
   // mode enabled.
 
   // If we are waiting for all bytes to be acquired, keep the defering
   // mode enabled.

-  if ((m_flags & WAITALL) == 0 || m_defer_nbytes == 0 || ret < 0)
+  if (!(m_flags & WAITALL) || !m_defer_nbytes || ret < 0)

   {
     m_defer_buffer = NULL;
   }
   {
     m_defer_buffer = NULL;
   }


@@ -579,31 +651,41 @@ void wxSocketBase::DoDefer()
     m_defer_buffer += ret;
     m_defer_timer->Start(m_timeout * 1000, FALSE);
   }
     m_defer_buffer += ret;
     m_defer_timer->Start(m_timeout * 1000, FALSE);
   }

+
+  //wxLogMessage("DoDefer ha transferido %d bytes", ret);

 }
 
 }
 

-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];
   wxUint32 recv_size = MAX_BUFSIZE;
   wxUint32 total = 0;
 
   char *my_data = new char[MAX_BUFSIZE];
   wxUint32 recv_size = MAX_BUFSIZE;
   wxUint32 total = 0;
 

-  SaveState();
-  SetFlags(NOWAIT);     // GRG: SPEED was not needed here!
+  // Mask read events
+  m_reading = TRUE;
+
+  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;
   }
 
     total += recv_size;
   }
 

-  RestoreState();

   delete [] my_data;
   delete [] my_data;

-

   m_lcount = total;
   m_error = FALSE;
 
   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
 }
 


@@ -689,7 +771,7 @@ void wxSocketBase::RestoreState()
 // 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
 // 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 wxYield(), so this won't block the GUI.
+// 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)
 {


@@ -699,7 +781,11 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags fla
   int state = -1;
 
   // Check for valid socket
   int state = -1;
 
   // Check for valid socket

-  if ((!m_connected && !m_establishing) || !m_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
     return FALSE;
 
   // Check for valid timeout value


@@ -709,22 +795,66 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds, wxSocketEventFlags fla
     timeout = m_timeout * 1000;
 
   // Activate timer
     timeout = m_timeout * 1000;
 
   // Activate timer

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

 
   // Active polling (without using events)
 
   // Active polling (without using events)

-  result = GSocket_Select(m_socket, flags);
-
-  while ((result == 0) && (state == -1))
+  //
+  // 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

   {
   {

-    wxYield();
-    result = GSocket_Select(m_socket, flags);
+    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)
+    {
+      timer.Stop();
+      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) )
+    {
+/* TODO: remove this
+      if (m_defer_buffer == NULL)
+*/
+      {
+        timer.Stop();
+        return TRUE;
+      }
+    }
+
+    if (timeout != 0)
+      PROCESS_EVENTS();

   }
   }

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

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

-
-  return (result != 0);
+  return FALSE;

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


@@ -737,12 +867,16 @@ bool wxSocketBase::Wait(long seconds, long milliseconds)
 
 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)


@@ -767,11 +901,6 @@ void wxSocketBase::SetFlags(wxSockFlags _flags)
   m_flags = _flags;
 }
 
   m_flags = _flags;
 }
 

-wxSocketBase::wxSockFlags wxSocketBase::GetFlags() const
-{
-  return m_flags;
-}
-

 // --------------------------------------------------------------
 // wxSocketBase callback management
 // --------------------------------------------------------------
 // --------------------------------------------------------------
 // wxSocketBase callback management
 // --------------------------------------------------------------


@@ -796,7 +925,12 @@ char *wxSocketBase::CallbackData(char *data)
 // wxSocketBase automatic notifier
 // --------------------------------------------------------------
 
 // wxSocketBase automatic notifier
 // --------------------------------------------------------------
 

-static void wx_socket_callback(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;
 


@@ -830,6 +964,14 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt)
   wxSocketEvent event(m_id);
   wxSocketEventFlags flag = EventToNotify(req_evt);
 
   wxSocketEvent event(m_id);
   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:
   switch(req_evt)
   {
     case wxSOCKET_CONNECTION:


@@ -844,10 +986,7 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt)
     case wxSOCKET_OUTPUT:
       if (m_defer_buffer)
       {
     case wxSOCKET_OUTPUT:
       if (m_defer_buffer)
       {

-        // GRG: DoDefer() no longer needs to know which
-        // event occured, because this was only used to
-        // catch LOST events and set m_defer_buffer to
-        // NULL, and this is done in OnRequest() now.
+        // fprintf(stderr, "%s: Habia buffer, evt %d skipped\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);

         DoDefer();
         // Do not notify to user
         return;
         DoDefer();
         // Do not notify to user
         return;


@@ -855,8 +994,18 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt)
       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))
+  {
+    // fprintf(stderr, "%s: Swallowed evt %d\n", (m_type == SOCK_CLIENT)? "client" : "server", req_evt);
+    return;
+  }
+

   if (((m_neededreq & flag) == flag) && m_notify_state)
   {
   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_skevt  = req_evt;
     ProcessEvent(event);
     event.m_socket = this;
     event.m_skevt  = req_evt;
     ProcessEvent(event);


@@ -865,9 +1014,11 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt)
     if (m_cbk)
       m_cbk(*this, req_evt, m_cdata);
   }
     if (m_cbk)
       m_cbk(*this, req_evt, m_cdata);
   }

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

 }
 
 }
 

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

 {
 }
 
 {
 }
 


@@ -882,25 +1033,10 @@ void wxSocketBase::SetEventHandler(wxEvtHandler& h_evt, int id)
 }
 
 // --------------------------------------------------------------
 }
 
 // --------------------------------------------------------------

-// wxSocketBase pushback library
+// wxSocketBase pushback

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

-void wxSocketBase::CreatePushbackAfter(const char *buffer, wxUint32 size)
-{
-  char *curr_pos;
-
-  if (m_unread != NULL)
-    m_unread = (char *) realloc(m_unread, m_unrd_size+size);
-  else
-    m_unread = (char *) malloc(size);
-
-  curr_pos = m_unread + m_unrd_size;
-
-  memcpy(curr_pos, buffer, size);
-  m_unrd_size += size;
-}
-
-void wxSocketBase::CreatePushbackBefore(const char *buffer, wxUint32 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);


@@ -926,6 +1062,7 @@ 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);
 
   if (!peek) {
   memcpy(buffer, (m_unread+m_unrd_cur), size);
 
   if (!peek) {


@@ -1028,7 +1165,7 @@ wxSocketBase *wxSocketServer::Accept(bool wait)
 
 bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
 {
 
 bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
 {

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

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


@@ -1071,6 +1208,9 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
     return FALSE;
 
   GSocket_SetTimeout(m_socket, m_timeout);
     return 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
 
   // GRG: If wait == FALSE, then the call should be nonblocking.
   // When we are finished, we put the socket to blocking mode


@@ -1081,9 +1221,6 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);

-  GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
-                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
-                                wx_socket_callback, (char *)this);

 
   if (!wait)
     GSocket_SetNonBlocking(m_socket, FALSE);
 
   if (!wait)
     GSocket_SetNonBlocking(m_socket, FALSE);


@@ -1102,33 +1239,15 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
 
 bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
 {
 
 bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
 {

-  bool ret;
-
-  if (m_connected)      // Already connected
+  if (m_connected)                      // Already connected

     return TRUE;
 
     return TRUE;
 

-  if (!m_establishing || !m_socket)  // No connection in progress
+  if (!m_establishing || !m_socket)     // No connection in progress

     return FALSE;
 
     return FALSE;
 

-  ret = _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG);
-
-  // GRG: m_connected and m_establishing will be updated in
-  // OnRequest(), but we do it here anyway because sometimes
-  // the event might be a bit delayed, and if that happens,
-  // when WaitOnConnect() returns, m_connected will still be
-  // FALSE. We have to do it as well in OnRequest because
-  // maybe WaitOnConnect() is not being used...
-
-  if (ret)
-  {
-    m_connected = GSocket_Select(m_socket, GSOCK_CONNECTION_FLAG);
-    m_establishing = FALSE;
-  }
-
-  return m_connected;
+  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);

 }
 
 }
 

-

 // --------------------------------------------------------------
 // wxSocketEvent
 // --------------------------------------------------------------
 // --------------------------------------------------------------
 // wxSocketEvent
 // --------------------------------------------------------------