--- a/sjsbox/box.py	Mon May 31 12:18:28 2010 -0700
+++ b/sjsbox/box.py	Mon May 31 12:34:33 2010 -0700
@@ -4,12 +4,12 @@
 
 class BoxChild(object):
     LIMITS = {
-        resource.RLIMIT_DATA: (1024 * 1024, 1024 * 2048),
-        resource.RLIMIT_STACK: (1024 * 512, 1024 * 1024),
-        resource.RLIMIT_RSS: (1024 * 1024, 1024 * 2048),
-        resource.RLIMIT_AS: (1024 * 1024, 1024 * 2048),
-        resource.RLIMIT_CPU: (5, 10),
-        resource.RLIMIT_NOFILE: (10, 20)
+        #resource.RLIMIT_DATA: (1024 * 1024, 1024 * 2048),
+        #resource.RLIMIT_STACK: (1024 * 512, 1024 * 1024),
+        #resource.RLIMIT_RSS: (1024 * 1024, 1024 * 2048),
+        #resource.RLIMIT_AS: (1024 * 1024, 1024 * 2048),
+        #resource.RLIMIT_CPU: (5, 10),
+        #resource.RLIMIT_NOFILE: (10, 20)
         }
 
     def __init__(self, f, pipe):
@@ -63,14 +63,21 @@
                                    kwargs=kwargs)
         self.child.start()
 
+    def __child_call(self, msg, *args):
+        if self.child is None:
+            raise IOError('process is shut down')
+        self.child_pipe.send((msg, args))
+        if not self.child_pipe.poll(self.TIMEOUT):
+            self.shutdown()
+            raise IOError('message send failed: %s' % msg)
+        return self.child_pipe.recv()
+
     def handle(self, method, path):
-        self.child_pipe.send(('handle', (method, path)))
-        return self.child_pipe.recv()
+        return self.__child_call('handle', method, path)
 
     @property
     def status(self):
-        self.child_pipe.send(('status', ()))
-        return self.child_pipe.recv()
+        return self.__child_call('status')
 
     def shutdown(self):
         self.child_pipe.send(('shutdown', None))