* Name: gsocket.c
* Author: Guillermo Rodriguez Garcia <guille@iies.es>
* Purpose: GSocket main MSW file
+ * Licence: The wxWindows licence
* CVSID: $Id$
* -------------------------------------------------------------------------
*/
# pragma warning(disable:4100)
#endif /* _MSC_VER */
+#include <winsock.h>
#ifndef __GSOCKET_STANDALONE__
-# include "wx/defs.h"
-# include "wx/setup.h"
+# include "wx/platform.h"
+# include "wx/setup.h"
#endif
#if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
# include "gsocket.h"
#endif /* __GSOCKET_STANDALONE__ */
-/* Redefine some GUI-only functions to do nothing in console mode */
-#if defined(wxUSE_GUI) && !wxUSE_GUI
-# define _GSocket_GUI_Init(socket) (1)
-# define _GSocket_GUI_Destroy(socket)
-# define _GSocket_Enable_Events(socket)
-# define _GSocket_Disable_Events(socket)
-#endif /* wxUSE_GUI */
-
-
+#ifndef __WXWINCE__
#include <assert.h>
+#else
+#define assert(x)
+#ifndef isdigit
+#define isdigit(x) (x > 47 && x < 58)
+#endif
+#include "wx/msw/wince/net.h"
+#endif
+
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <ctype.h>
-#include <winsock.h>
-
/* if we use configure for MSW SOCKLEN_T will be already defined */
#ifndef SOCKLEN_T
# define SOCKLEN_T int
#endif
+/* Table of GUI-related functions. We must call them indirectly because
+ * of wxBase and GUI separation: */
+
+static struct GSocketGUIFunctionsTable *gs_gui_functions;
+
+#define USE_GUI() (gs_gui_functions != NULL)
+
+/* Define macros to simplify indirection: */
+#define _GSocket_GUI_Init() \
+ if (gs_gui_functions) gs_gui_functions->GUI_Init()
+#define _GSocket_GUI_Cleanup() \
+ if (gs_gui_functions) gs_gui_functions->GUI_Cleanup()
+#define _GSocket_GUI_Init_Socket(socket) \
+ (gs_gui_functions ? gs_gui_functions->GUI_Init_Socket(socket) : 1)
+#define _GSocket_GUI_Destroy_Socket(socket) \
+ if (gs_gui_functions) gs_gui_functions->GUI_Destroy_Socket(socket)
+#define _GSocket_Enable_Events(socket) \
+ if (gs_gui_functions) gs_gui_functions->Enable_Events(socket)
+#define _GSocket_Disable_Events(socket) \
+ if (gs_gui_functions) gs_gui_functions->Disable_Events(socket)
+#define _GSocket_Install_Callback(socket, event) \
+ if (gs_gui_functions) gs_gui_functions->Install_Callback(socket, event)
+#define _GSocket_Uninstall_Callback(socket, event) \
+ if (gs_gui_functions) gs_gui_functions->Uninstall_Callback(socket, event)
+
+/* Global initialisers */
+
+void GSocket_SetGUIFunctions(struct GSocketGUIFunctionsTable *guifunc)
+{
+ gs_gui_functions = guifunc;
+}
+
+int GSocket_Init(void)
+{
+ WSADATA wsaData;
+
+ if (gs_gui_functions)
+ {
+ if ( !gs_gui_functions->GUI_Init() )
+ return 0;
+ }
+
+ /* Initialize WinSocket */
+ return (WSAStartup((1 << 8) | 1, &wsaData) == 0);
+}
+
+void GSocket_Cleanup(void)
+{
+ if (gs_gui_functions)
+ {
+ gs_gui_functions->GUI_Cleanup();
+ }
+
+ /* Cleanup WinSocket */
+ WSACleanup();
+}
/* Constructors / Destructors for GSocket */
socket->m_establishing = FALSE;
/* Per-socket GUI-specific initialization */
- success = _GSocket_GUI_Init(socket);
+ success = _GSocket_GUI_Init_Socket(socket);
if (!success)
{
free(socket);
return socket;
}
+void GSocket_close(GSocket *socket)
+{
+ _GSocket_Disable_Events(socket);
+ closesocket(socket->m_fd);
+ socket->m_fd = INVALID_SOCKET;
+}
+
void GSocket_destroy(GSocket *socket)
{
assert(socket != NULL);
/* Per-socket GUI-specific cleanup */
- _GSocket_GUI_Destroy(socket);
+ _GSocket_GUI_Destroy_Socket(socket);
/* Check that the socket is really shutdowned */
if (socket->m_fd != INVALID_SOCKET)
if (socket->m_fd != INVALID_SOCKET)
{
shutdown(socket->m_fd, 2);
- closesocket(socket->m_fd);
- socket->m_fd = INVALID_SOCKET;
+ GSocket_close(socket);
}
/* Disable GUI callbacks */
socket->m_cbacks[evt] = NULL;
socket->m_detected = GSOCK_LOST_FLAG;
- _GSocket_Disable_Events(socket);
}
/* Address handling */
ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg);
_GSocket_Enable_Events(sck);
+ /* allow a socket to re-bind if the socket is in the TIME_WAIT
+ state after being previously closed.
+ */
+ setsockopt(sck->m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long));
+
/* Bind to the local address,
* retrieve the actual address bound,
* and listen up to 5 connections.
(SOCKLEN_T *)&sck->m_local->m_len) != 0) ||
(listen(sck->m_fd, 5) != 0))
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
if (err != GSOCK_NOERROR)
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
/* sck->m_error is set in _GSocket_Connect_Timeout */
}
- return err;
+ return (GSocketError) err;
}
/* If connect failed with EWOULDBLOCK and the GSocket object
/* If connect failed with an error other than EWOULDBLOCK,
* then the call to GSocket_Connect() has failed.
*/
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
sck->m_local->m_addr,
(SOCKLEN_T *)&sck->m_local->m_len) != 0))
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
*/
GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
{
-#if defined(wxUSE_GUI) && !wxUSE_GUI
+ if (!USE_GUI())
+ {
+ GSocketEventFlags result = 0;
+ fd_set readfds;
+ fd_set writefds;
+ fd_set exceptfds;
+
+ assert(socket != NULL);
- GSocketEventFlags result = 0;
- fd_set readfds;
- fd_set writefds;
- fd_set exceptfds;
- static const struct timeval tv = { 0, 0 };
+ FD_ZERO(&readfds);
+ FD_ZERO(&writefds);
+ FD_ZERO(&exceptfds);
+ FD_SET(socket->m_fd, &readfds);
+ if (flags & GSOCK_OUTPUT_FLAG)
+ FD_SET(socket->m_fd, &writefds);
+ FD_SET(socket->m_fd, &exceptfds);
- assert(socket != NULL);
+ /* Check 'sticky' CONNECTION flag first */
+ result |= (GSOCK_CONNECTION_FLAG & socket->m_detected);
- FD_ZERO(&readfds);
- FD_ZERO(&writefds);
- FD_ZERO(&exceptfds);
- FD_SET(socket->m_fd, &readfds);
- FD_SET(socket->m_fd, &writefds);
- FD_SET(socket->m_fd, &exceptfds);
-
- /* Check known state first */
- result |= (GSOCK_CONNECTION_FLAG & socket->m_detected & flags);
- result |= (GSOCK_LOST_FLAG & socket->m_detected & flags);
+ /* If we have already detected a LOST event, then don't try
+ * to do any further processing.
+ */
+ if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
+ {
+ socket->m_establishing = FALSE;
- /* Try select now */
- if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0)
- return result;
+ return (GSOCK_LOST_FLAG & flags);
+ }
- /* Check for readability */
- if (FD_ISSET(socket->m_fd, &readfds))
- {
- /* Assume that closure of the socket is always reported via exceptfds */
- if (socket->m_server && socket->m_stream)
- result |= (GSOCK_CONNECTION_FLAG & flags);
- else
- result |= (GSOCK_INPUT_FLAG & flags);
- }
+ /* Try select now */
+ if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds,
+ &socket->m_timeout) <= 0)
+ {
+ /* What to do here? */
+ return (result & flags);
+ }
- /* Check for writability */
- if (FD_ISSET(socket->m_fd, &writefds))
- {
- if (socket->m_establishing && !socket->m_server)
+ /* Check for readability */
+ if (FD_ISSET(socket->m_fd, &readfds))
{
- result |= (GSOCK_CONNECTION_FLAG & flags);
- socket->m_establishing = FALSE;
- socket->m_detected |= GSOCK_CONNECTION_FLAG;
+ char c;
+
+ if (!socket->m_stream || recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
+ {
+ result |= GSOCK_INPUT_FLAG;
+ }
+ else
+ {
+ if (socket->m_server && socket->m_stream)
+ {
+ result |= GSOCK_CONNECTION_FLAG;
+ socket->m_detected |= GSOCK_CONNECTION_FLAG;
+ }
+ else
+ {
+ socket->m_detected = GSOCK_LOST_FLAG;
+ socket->m_establishing = FALSE;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+ }
}
- else
- result |= (GSOCK_OUTPUT_FLAG & flags);
- }
- /* Check for exceptions and errors */
- if (FD_ISSET(socket->m_fd, &exceptfds))
- {
- result |= (GSOCK_LOST_FLAG & flags);
- socket->m_establishing = FALSE;
- socket->m_detected = GSOCK_LOST_FLAG;
- }
+ /* Check for writability */
+ if (FD_ISSET(socket->m_fd, &writefds))
+ {
+ if (socket->m_establishing && !socket->m_server)
+ {
+ int error;
+ SOCKLEN_T len = sizeof(error);
- return result;
+ socket->m_establishing = FALSE;
-#else
+ getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
- assert(socket != NULL);
- return flags & socket->m_detected;
+ if (error)
+ {
+ socket->m_detected = GSOCK_LOST_FLAG;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+ else
+ {
+ result |= GSOCK_CONNECTION_FLAG;
+ socket->m_detected |= GSOCK_CONNECTION_FLAG;
+ }
+ }
+ else
+ {
+ result |= GSOCK_OUTPUT_FLAG;
+ }
+ }
+
+ /* Check for exceptions and errors (is this useful in Unices?) */
+ if (FD_ISSET(socket->m_fd, &exceptfds))
+ {
+ socket->m_establishing = FALSE;
+ socket->m_detected = GSOCK_LOST_FLAG;
-#endif /* !wxUSE_GUI */
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+
+ return (result & flags);
+ }
+ else /* USE_GUI() */
+ {
+ assert(socket != NULL);
+ return flags & socket->m_detected;
+ }
}
/* Attributes */
GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
{
+#if defined(__BORLANDC__)
+ /* prevents unused variable message in Borland */
+ (void)path;
+#endif
assert (address != NULL);
address->m_error = GSOCK_INVADDR;
return GSOCK_INVADDR;
GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
{
+#if defined(__BORLANDC__)
+ /* prevents unused variable message in Borland */
+ (void)path;
+ (void)sbuf;
+#endif
assert (address != NULL);
address->m_error = GSOCK_INVADDR;
return GSOCK_INVADDR;
typedef void (*wxDummy)();
#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
+
projects / wxWidgets.git / blobdiff