Add --run-once and --timeout TIME parameters.

- --run-once will exit after handling a single WebSocket connection
  (but not ater flash policy or normal web requests).

- --timeout TIME will stop listening for new connections after exit
  after TIME seconds (the master process shuts down). Existing
  WebSocket connections will continue but once all connections are
  closed all processes will terminate.

websocket.py

@@ -88,7 +88,8 @@ Sec-WebSocket-Accept: %s\r
 
     def __init__(self, listen_host='', listen_port=None, source_is_ipv6=False,
             verbose=False, cert='', key='', ssl_only=None,
-            daemon=False, record='', web=''):
+            daemon=False, record='', web='',
+            run_once=False, timeout=0):
 
         # settings
         self.verbose        = verbose
@@ -96,6 +97,11 @@ Sec-WebSocket-Accept: %s\r
         self.listen_port    = listen_port
         self.ssl_only       = ssl_only
         self.daemon         = daemon
+        self.run_once       = run_once
+        self.timeout        = timeout
+
+        self.launch_time    = time.time()
+        self.ws_connection  = False
         self.handler_id     = 1
 
         # Make paths settings absolute
@@ -727,6 +733,7 @@ Sec-WebSocket-Accept: %s\r
                     self.rec = open(fname, 'w+')
                     self.rec.write("var VNC_frame_data = [\n")
 
+                self.ws_connection = True
                 self.new_client()
             except self.EClose:
                 _, exc, _ = sys.exc_info()
@@ -777,6 +784,12 @@ Sec-WebSocket-Accept: %s\r
                     startsock = None
                     pid = err = 0
 
+                    time_elapsed = time.time() - self.launch_time
+                    if self.timeout and time_elapsed > self.timeout:
+                        self.msg('listener exit due to --timeout %s'
+                                % self.timeout)
+                        break
+
                     try:
                         self.poll()
 
@@ -799,7 +812,14 @@ Sec-WebSocket-Accept: %s\r
                         else:
                             raise
 
-                    if Process:
+                    if self.run_once:
+                        # Run in same process if run_once
+                        self.top_new_client(startsock, address)
+                        if self.ws_connection :
+                            self.msg('%s: exiting due to --run-once'
+                                    % address[0])
+                            break
+                    elif Process:
                         self.vmsg('%s: new handler Process' % address[0])
                         p = Process(target=self.top_new_client,
                                 args=(startsock, address))