Adding a runnable example of protocol integration.

Author: habnabit

examples/protocol/netstring_reversal.py

@@ -0,0 +1,38 @@
+from twisted.internet.defer import Deferred
+from twisted.internet.endpoints import TCP4ServerEndpoint
+from twisted.internet.protocol import ServerFactory
+from twisted.internet.task import react
+
+from parsley import makeProtocol
+from netstrings import grammar, NetstringSender
+
+
+class NetstringReverserState(object):
+    def __init__(self, sender, parser):
+        self.sender = sender
+
+    def connectionMade(self):
+        pass
+
+    def connectionLost(self, reason):
+        pass
+
+    def netstringReceived(self, string):
+        self.sender.sendNetstring(string[::-1])
+
+
+NetstringReverser = makeProtocol(
+    grammar, NetstringSender, NetstringReverserState)
+
+
+class NetstringReverserFactory(ServerFactory):
+    protocol = NetstringReverser
+
+
+def main(reactor):
+    server = TCP4ServerEndpoint(reactor, 1234)
+    d = server.listen(NetstringReverserFactory())
+    d.addCallback(lambda p: Deferred())
+    return d
+
+react(main, [])