mirror of https://github.com/scrapy/scrapy.git
18 lines
675 B
Python
18 lines
675 B
Python
from twisted.internet import reactor, error
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def listen_tcp(portrange, factory):
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"""Like reactor.listenTCP but tries different ports in a range."""
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assert len(portrange) <= 2, "invalid portrange: %s" % portrange
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if not hasattr(portrange, '__iter__'):
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return reactor.listenTCP(portrange, factory)
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if not portrange:
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return reactor.listenTCP(0, factory)
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if len(portrange) == 1:
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return reactor.listenTCP(portrange[0], factory)
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for x in range(portrange[0], portrange[1]+1):
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try:
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return reactor.listenTCP(x, factory)
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except error.CannotListenError:
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if x == portrange[1]:
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raise
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