[Twisted-web] Deferred in proxy.ProxyClient.handleHeader (reformatted)

Ing. Stefan Grosz, BSc stefan at grosz.at
Fri May 28 08:47:41 EDT 2010


(sorry, the formatting in my last mail got screwed up. hope this time it works)

i'm currently writing a reverse proxy with twisted and i've a problem with a deferred function in my handleHeader method.

the code looks simplified like this (http://pastie.org/981735):

class MyProxyClient(proxy.ProxyClient):
    def handleHeader(self, key, value):
        if key.lower() == 'location':
            clientCreator = protocol.ClientCreator(reactor, Redis, db=3)
            redis = yield clientCreator.connectTCP("localhost", 6379)
            value = yield redis.get('myproxy:hashcode:%s' % value)

as the handleHeader caller doesn't wait for a deferred to finish, the location header is added after handleResponseEnd is already called and therefore never makes it to the client.

is there a way to convert the non-blocking redis call to a blocking redis call?
i know that there's a blocking client library for redis but i'd rather use only txredis if possible.


Stefan Grosz <stefan at grosz.at>
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