Python and HTTP Pipelining


Attention, this method is NOT pipelining as described in comments, and even might break if the http connection is too fast with httplib.ResponseNotReady. I’ll update this post when i’ll found a real and simple way to achieve pipelining, because one possible way to do it with httplib is really ugly

I wanted to do HTTP Pipelining using urllib2. But, first of all, what is pipelining ?
HTTP pipelining is a technique in which multiple HTTP requests are written out to a single socket without waiting for the corresponding responses.

What is the benefit of pipelining ? Less network load, speedup processing !
I was searching a way to do it with urllib2… But solution are complicated, and not fit well to my needs.
But way, why stay on urllib2 ? Use httplib !

Reusing the connection :

First, reusing the same connection

import httplib
server = httplib.HTTPConnection('yourserver.com')
server.request('GET', '/index.html')
print 'RESPONSE1:', server.getresponse().read()

server.request('GET', '/index2.html')
print 'RESPONSE2:', server.getresponse().read()

server.request('GET', '/index3.html')
print 'RESPONSE3:', server.getresponse().read()

Second, try pipelining !

import httplib
server = httplib.HTTPConnection('yourserver.com')
server.request('GET', '/index.html')
res1 = server.getresponse()
server.request('GET', '/index2.html')
res2 = server.getresponse()
server.request('GET', '/index3.html')
res3 = server.getresponse()

print 'RESPONSE1:', res1.read()
print 'RESPONSE2:', res2.read()
print 'RESPONSE3:', res3.read()