pagespeed/ngx_pagespeed — pull request #357 by oschaaf (2013-05-10 10:17:27+00:00)
Title: wget and 204 responses: disable keepalive 

An alternative way to work around wget hanging on 204 responses without a content length header. By disabling keepalive for requests that wget does to the beacon url, nginx will close the connection when it has finished sending the responses.

This should speed up the tests a little bit, as we don't have to wait a second for the wget timeout to occur.