70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
"""Listen on port 8888 and pretend to be an HTTP proxy.
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It even works for some pages.
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Demonstrates how to
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* plug in eventlet into a twisted application (join_reactor)
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* call green functions from places where blocking calls
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are not allowed (deferToGreenThread)
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* use eventlet.green package which provides [some of] the
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standard library modules that don't block other greenlets.
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"""
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import re
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from twisted.internet.protocol import Factory
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from twisted.internet import reactor
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from twisted.protocols import basic
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from eventlet.twistedutil import deferToGreenThread
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from eventlet.twistedutil import join_reactor
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from eventlet.green import httplib
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class LineOnlyReceiver(basic.LineOnlyReceiver):
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def connectionMade(self):
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self.lines = []
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def lineReceived(self, line):
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if line:
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self.lines.append(line)
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elif self.lines:
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self.requestReceived(self.lines)
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self.lines = []
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def requestReceived(self, lines):
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request = re.match('^(\w+) http://(.*?)(/.*?) HTTP/1..$', lines[0])
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#print request.groups()
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method, host, path = request.groups()
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headers = dict(x.split(': ', 1) for x in lines[1:])
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def callback(result):
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self.transport.write(str(result))
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self.transport.loseConnection()
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def errback(err):
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err.printTraceback()
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self.transport.loseConnection()
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d = deferToGreenThread(http_request, method, host, path, headers=headers)
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d.addCallbacks(callback, errback)
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def http_request(method, host, path, headers):
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conn = httplib.HTTPConnection(host)
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conn.request(method, path, headers=headers)
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response = conn.getresponse()
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body = response.read()
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print method, host, path, response.status, response.reason, len(body)
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return format_response(response, body)
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def format_response(response, body):
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result = "HTTP/1.1 %s %s" % (response.status, response.reason)
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for k, v in response.getheaders():
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result += '\r\n%s: %s' % (k, v)
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if body:
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result += '\r\n\r\n'
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result += body
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result += '\r\n'
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return result
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class MyFactory(Factory):
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protocol = LineOnlyReceiver
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print __doc__
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reactor.listenTCP(8888, MyFactory())
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reactor.run()
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