sockjs/sockjs-protocol — pull request #65 by rstoyanchev (2012-12-27 18:53:53+00:00)
Title: Introduce 0.25 sec delay for concurrent poll requests

On Java Servlet containers, requests are processed in concurrent threads
and it's not possible to guarantee the order of processing. This
change introduces a 0.25 sec delay between requests when testing
simultaneous polling requests to maximize the chance of the first
request to be processed first.