I am creating some suspended connections to an HTTP server (comet, reverse AJAX, etc). It works ok, but I see the browser only allows two suspended connections to a given domain simultaneously. So if a user is looking at my website in Tab1 of their browser, then also tries loading it in Tab2, they&#39;ve used up the two allowed connections to my site.

I think I can do some wildcard domain thing, where I have my HTTP server resolve any address to my site like:

    *.example.com/webapp  -&gt; 192.0.2.1 (the actual ip of my server)

so:

    a.example.com/webapp
    b.example.com/webapp
    c.example.com/webapp

all still point to (`www.example.com/webapp`) but the browser considers them different domains, so I don&#39;t run into the 2 connection limit. Is this true?

Even if that *is* true - is there any limit to the number of active connections per browser, across all domains? Say I use the scheme above - does Firefox for example only allow 24 parallel connections at any given time? Something like:

    1) a.example.com/webapp
    2) www.download.example/hugefile.zip
    3) b.example.com/webapp
    4) c.example.com/webapp
    ...
    24) x.example.com/webapp
    25) // Error - all 24 possible connections currently in use!

I just picked 24 connections/Firefox as an example.

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Max parallel HTTP connections in a browser?