diff -r 000000000000 -r e9f209a24d53 Python/asynchatPong.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Python/asynchatPong.py	Tue Jun 23 12:46:40 2009 -0700
@@ -0,0 +1,59 @@
+# asynchatPong
+# Listener using asynchat
+# Not related to BLIP - just to aid in my understanding of what's going on
+# Sends "Pong" when it gets "Ping"
+
+import sys
+import traceback
+import socket
+import asyncore
+import asynchat
+
+class asynchatPongListener(asyncore.dispatcher):
+    def __init__(self, port):
+        asyncore.dispatcher.__init__(self)
+        self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.bind( ('', port) )
+        self.listen(2)
+        self.shouldAccept = True
+    
+    def handle_accept(self):
+        if self.shouldAccept:
+            sock, addr = self.accept()
+            self.conn = asynchatPong(sock, self)
+            self.shouldAccept = False
+    
+    def handle_error(self):
+        (typ,val,trace) = sys.exc_info()
+        print "Listener caught: %s %s\n%s" % (typ,val,traceback.format_exc())
+        self.close()
+    
+    def handle_close(self):
+        print "Listener got close"
+        asyncore.dispatcher.handle_close(self)
+
+class asynchatPong(asynchat.async_chat):
+    def __init__(self, socket, listener):
+        asynchat.async_chat.__init__(self, socket)
+        self._listener = listener
+        self.set_terminator("Ping")
+    
+    def collect_incoming_data(self, data):
+        """called when arbitrary amount of data arrives. we just eat it"""
+        pass
+    
+    def found_terminator(self):
+        """called when the terminator we set is found"""
+        print "Found 'Ping'"
+        self.push("Pong")
+        print "Sent 'Pong'"
+    
+    def handle_close(self):
+        print "Closed; closing listener"
+        self._listener.close()
+        asynchat.async_chat.handle_close(self)
+    
+
+if __name__ == '__main__':
+    pong = asynchatPongListener(1337)
+    asyncore.loop()