+// ---------------------------------------------------------------------------
+// helper struct and functions for socket handling
+// ---------------------------------------------------------------------------
+
+struct GsocketCallbackInfo{
+    void (*proc)(void *);
+    int type;
+    int handle;
+    void* gsock;
+};
+
+// These defines and wrapper functions are used here and in gsockpm.c
+#define wxSockReadMask  0x01
+#define wxSockWriteMask 0x02
+
+#ifdef __EMX__
+extern "C"
+int wxAppAddSocketHandler(int handle, int mask,
+                           void (*callback)(void*), void * gsock)
+{
+    return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
+}
+extern "C"
+void wxAppRemoveSocketHandler(int handle)
+{
+    wxTheApp->RemoveSocketHandler(handle);
+}
+#else
+//  Linkage mode problems using callbacks with extern C in a .cpp module
+int wxAppAddSocketHandler(int handle, int mask,
+                           void (*callback)(void*), void * gsock)
+{
+    return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
+}
+void wxAppRemoveSocketHandler(int handle)
+{
+    wxTheApp->RemoveSocketHandler(handle);
+}
+#endif
+
+void wxApp::HandleSockets()
+{
+    bool pendingEvent = FALSE;
+
+    // Check whether it's time for Gsocket operation
+    if (m_maxSocketHandles > 0 && m_maxSocketNr > 0)
+    {
+        fd_set readfds = m_readfds;
+        fd_set writefds = m_writefds;
+        struct timeval timeout;
+        int i;
+        struct GsocketCallbackInfo
+          *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
+        int r = 0;
+        timeout.tv_sec = 0;
+        timeout.tv_usec = 0;
+        if ( select(m_maxSocketNr, &readfds, &writefds, 0, &timeout) > 0)
+        {
+            for (i = m_lastUsedHandle + 1; i != m_lastUsedHandle; i++)
+            {
+                if (i == m_maxSocketNr)
+                    i = 0;
+                if (FD_ISSET(i, &readfds))
+                {
+                    int r;
+                    for (r = 0; r < m_maxSocketHandles; r++){
+                        if(CallbackInfo[r].handle == i &&
+                           CallbackInfo[r].type == wxSockReadMask)
+                            break;
+                    }
+                    if (r < m_maxSocketHandles)
+                    {
+                        CallbackInfo[r].proc(CallbackInfo[r].gsock);
+                        pendingEvent = TRUE;
+                        wxYield();
+                    }
+                }
+                if (FD_ISSET(i, &writefds))
+                {
+                    int r;
+                    for (r = 0; r < m_maxSocketHandles; r++)
+                        if(CallbackInfo[r].handle == i &&
+                           CallbackInfo[r].type == wxSockWriteMask)
+                            break;
+                    if (r < m_maxSocketHandles)
+                    {
+                        CallbackInfo[r].proc(CallbackInfo[r].gsock);
+                        pendingEvent = TRUE;
+                        wxYield();
+                    }
+                }
+            }
+            m_lastUsedHandle = i;
+        }
+        if (pendingEvent)
+            wxYield();
+    }
+}