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# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import collections
PortPair = collections.namedtuple('PortPair', ['local_port', 'remote_port'])
PortSet = collections.namedtuple('PortSet', ['http', 'https', 'dns'])
class ForwarderFactory(object):
def Create(self, port_pair):
"""Creates a forwarder that maps remote (device) <-> local (host) ports.
Args:
port_pair: A PortPairs instance that consists of a PortPair mapping
for each protocol. http is required. https and dns may be None.
"""
raise NotImplementedError()
@property
def host_ip(self):
return '127.0.0.1'
class Forwarder(object):
def __init__(self, port_pair):
assert port_pair, 'Port mapping is required.'
self._port_pair = port_pair
self._forwarding = True
@property
def host_port(self):
return self._port_pair.remote_port
@property
def host_ip(self):
return '127.0.0.1'
@property
def port_pair(self):
return self._port_pair
@property
def url(self):
assert self.host_ip and self.host_port
return 'http://%s:%i' % (self.host_ip, self.host_port)
def Close(self):
self._port_pair = None
self._forwarding = False
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