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I am trying to complete a list of offical documentation references about the default values* of the maximum concurrent HTTP/1.1 connections per server for current (2011) major browsers.

Here's what I've got so far:

I think most (if not all) of the default values I listed should be correct, but I'd prefer to have official documentation references which prove that.

Is anybody aware of such offical documentation references?

Any help would be greatly appreciated.

* How to tweak this values by registry/console, or how to optimize by CDNs/CNAMEs is not the target of this question.

Jürgen Thelen
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  • Ok, I'll bite. What do you plan to do with this info? Any browser worth using today has at least 6 concurrent connections per server. I can't see what you plan to do with this info other than use the stats to try and convince IE6/IE7 users to upgrade? – scunliffe Apr 22 '11 at 02:33
  • @scunliffe: I just don't like to base parallelizing optimizations on assumptions (no, not even my own^^). That's all. My current infos are partially outdated and contain too much assumptions. That's why I asked for official references to get up-to-date again. And no, my question was in **no way** meant to start any kind of browser war, nor to convince people to use another browser. If it sounded like that, I appologize (not a native speaker). – Jürgen Thelen Apr 22 '11 at 11:56
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    possible duplicate of [Max parallel http connections in a browser?](http://stackoverflow.com/questions/985431/max-parallel-http-connections-in-a-browser) – David d C e Freitas Apr 04 '14 at 07:09
  • You can find some stats on browsers in the wild at http://www.browserscope.org/?category=network – Jaco Briers May 22 '14 at 09:33

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