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Direktori : /lib/python2.7/site-packages/requests_toolbelt/adapters/ |
Current File : //lib/python2.7/site-packages/requests_toolbelt/adapters/source.py |
# -*- coding: utf-8 -*- """ requests_toolbelt.source_adapter ================================ This file contains an implementation of the SourceAddressAdapter originally demonstrated on the Requests GitHub page. """ from requests.adapters import HTTPAdapter from .._compat import poolmanager, basestring class SourceAddressAdapter(HTTPAdapter): """ A Source Address Adapter for Python Requests that enables you to choose the local address to bind to. This allows you to send your HTTP requests from a specific interface and IP address. Two address formats are accepted. The first is a string: this will set the local IP address to the address given in the string, and will also choose a semi-random high port for the local port number. The second is a two-tuple of the form (ip address, port): for example, ``('10.10.10.10', 8999)``. This will set the local IP address to the first element, and the local port to the second element. If ``0`` is used as the port number, a semi-random high port will be selected. .. warning:: Setting an explicit local port can have negative interactions with connection-pooling in Requests: in particular, it risks the possibility of getting "Address in use" errors. The string-only argument is generally preferred to the tuple-form. Example usage: .. code-block:: python import requests from requests_toolbelt.adapters.source import SourceAddressAdapter s = requests.Session() s.mount('http://', SourceAddressAdapter('10.10.10.10')) s.mount('https://', SourceAddressAdapter(('10.10.10.10', 8999)) """ def __init__(self, source_address, **kwargs): if isinstance(source_address, basestring): self.source_address = (source_address, 0) elif isinstance(source_address, tuple): self.source_address = source_address else: raise TypeError( "source_address must be IP address string or (ip, port) tuple" ) super(SourceAddressAdapter, self).__init__(**kwargs) def init_poolmanager(self, connections, maxsize, block=False): self.poolmanager = poolmanager.PoolManager( num_pools=connections, maxsize=maxsize, block=block, source_address=self.source_address) def proxy_manager_for(self, *args, **kwargs): kwargs['source_address'] = self.source_address return super(SourceAddressAdapter, self).proxy_manager_for( *args, **kwargs)