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Viewing changes to vendor/Twisted-10.0.0/doc/web/examples/httpclient.py

  • Committer: Jesse Andrews
  • Date: 2010-05-28 06:05:26 UTC
  • Revision ID: git-v1:bf6e6e718cdc7488e2da87b21e258ccc065fe499
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vendor/Twisted-10.0.0/doc/web/examples/httpclient.py
 
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#!/usr/bin/env python
 
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# Copyright (c) 2009 Twisted Matrix Laboratories.
 
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# See LICENSE for details.
 
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import sys
 
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from pprint import pprint
 
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from twisted import version
 
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from twisted.python import log
 
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from twisted.internet.defer import Deferred
 
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from twisted.internet import reactor
 
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from twisted.internet.protocol import Protocol
 
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from twisted.web.iweb import UNKNOWN_LENGTH
 
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from twisted.web.http_headers import Headers
 
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from twisted.web.client import Agent, ResponseDone
 
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class WriteToStdout(Protocol):
 
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    def connectionMade(self):
 
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        self.onConnLost = Deferred()
 
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    def dataReceived(self, data):
 
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        print 'Got some:', data
 
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    def connectionLost(self, reason):
 
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        if not reason.check(ResponseDone):
 
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            reason.printTraceback()
 
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        else:
 
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            print 'Response done'
 
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        self.onConnLost.callback(None)
 
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def main(reactor, url):
 
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    userAgent = 'Twisted/%s (httpclient.py)' % (version.short(),)
 
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    agent = Agent(reactor)
 
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    d = agent.request(
 
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        'GET', url, Headers({'user-agent': [userAgent]}))
 
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    def cbResponse(response):
 
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        pprint(vars(response))
 
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        proto = WriteToStdout()
 
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        if response.length is not UNKNOWN_LENGTH:
 
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            print 'The response body will consist of', response.length, 'bytes.'
 
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        else:
 
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            print 'The response body length is unknown.'
 
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        response.deliverBody(proto)
 
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        return proto.onConnLost
 
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    d.addCallback(cbResponse)
 
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    d.addErrback(log.err)
 
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    d.addBoth(lambda ign: reactor.callWhenRunning(reactor.stop))
 
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    reactor.run()
 
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if __name__ == '__main__':
 
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    main(reactor, *sys.argv[1:])