[patch] RealVNC 4.0b4 (Xvnc): fix vncconfig -connect

[Tim Waugh]

See: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=114063

While attempting a reverse connection from the VNC module in the
XFree86 server to the vncviewer client, it is very likely that a
SIGALRM will interrupt the connect() system call.

Unfortunately, the existing code treats this as a failure, rather than
a reason to try again.  Here is the fix:

--- vnc-4.0b4-unixsrc/network/TcpSocket.cxx.restart	2004-01-22 15:24:34.000000000 +0000
+++ vnc-4.0b4-unixsrc/network/TcpSocket.cxx	2004-01-22 15:27:22.000000000 +0000
@@ -131,10 +131,14 @@
   }
 
   // Attempt to connect to the remote host
-  if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) != 0) {
-    int e = errorNumber;
-    closesocket(sock);
-    throw SocketException("unable to connect to host", e);
+  for (;;) {
+    if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) != 0) {
+      int e = errorNumber;
+      if (e == EINTR)
+	continue;
+      closesocket(sock);
+      throw SocketException("unable to connect to host", e);
+    } else break;
   }
 
   int one = 1;

Tim.
*/