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Viewing changes to vendor/Twisted-10.0.0/doc/core/howto/listings/pb/pbAnonClient.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/core/howto/listings/pb/pbAnonClient.py
 
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#!/usr/bin/env python
 
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# Copyright (c) 2007-2009 Twisted Matrix Laboratories.
 
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# See LICENSE for details.
 
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"""
 
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Client which will talk to the server run by pbAnonServer.py, logging in
 
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either anonymously or with username/password credentials.
 
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"""
 
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from sys import stdout
 
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from twisted.python.log import err, startLogging
 
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from twisted.cred.credentials import Anonymous, UsernamePassword
 
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from twisted.internet import reactor
 
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from twisted.internet.defer import gatherResults
 
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from twisted.spread.pb import PBClientFactory
 
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def error(why, msg):
 
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    """
 
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    Catch-all errback which simply logs the failure.  This isn't expected to
 
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    be invoked in the normal case for this example.
 
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    """
 
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    err(why, msg)
 
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def connected(perspective):
 
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    """
 
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    Login callback which invokes the remote "foo" method on the perspective
 
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    which the server returned.
 
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    """
 
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    print "got perspective1 ref:", perspective
 
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    print "asking it to foo(13)"
 
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    return perspective.callRemote("foo", 13)
 
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def finished(ignored):
 
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    """
 
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    Callback invoked when both logins and method calls have finished to shut
 
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    down the reactor so the example exits.
 
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    """
 
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    reactor.stop()
 
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def main():
 
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    """
 
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    Connect to a PB server running on port 8800 on localhost and log in to
 
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    it, both anonymously and using a username/password it will recognize.
 
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    """
 
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    startLogging(stdout)
 
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    factory = PBClientFactory()
 
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    reactor.connectTCP("localhost", 8800, factory)
 
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    anonymousLogin = factory.login(Anonymous())
 
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    anonymousLogin.addCallback(connected)
 
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    anonymousLogin.addErrback(error, "Anonymous login failed")
 
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    usernameLogin = factory.login(UsernamePassword("user1", "pass1"))
 
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    usernameLogin.addCallback(connected)
 
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    usernameLogin.addErrback(error, "Username/password login failed")
 
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    bothDeferreds = gatherResults([anonymousLogin, usernameLogin])
 
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    bothDeferreds.addCallback(finished)
 
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    reactor.run()
 
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if __name__ == '__main__':
 
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    main()