"Dan" <[EMAIL PROTECTED]> writes:
> Does anybody know how to control the source IP address (IPv4) when
> using the urllib2 library? I have a Linux box with several IP
> addresses in the same subnet, and I want to simulate several
> individuals within that subnet accessing web pages independently. I
> need the functionality of urllib2 because there will be redirects and
> other HTTP-type functions to implement. It would be nice if I could
> create (and bind) sockets myself and then tell the urllib functions to
> use those sockets. Perhaps there is some sort of "back-door" way of
> doing this??? Any hints are appreciated!
There's no built-in support, but I expect it's very easy to do. I
suppose the easiest way would be to derive from
httplib.HTTPConnection, overriding .connect() to call .bind() on the
socket. Call it BindingHTTPConnection, then define:
class BindingHTTPHandler(urllib2.HTTPHandler):
def http_open(self, req):
return self.do_open(BindingHTTPConnection, req)
Same goes for https:
if hasattr(httplib, 'HTTPS'):
class BindingHTTPSHandler(urllib2.HTTPSHandler):
def https_open(self, req):
return self.do_open(BindingHTTPSConnection, req)
Personally, I probably wouldn't use build_opener(), but since the
above classes derive from the corresponding urllib2 classes, you can
do:
opener = urllib2.build_opener(BindingHTTPHandler, BindingHTTPSHandler)
response = opener.open('http://www.example.com/')
John
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