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From: Grant Edwards <grant.b.edwards@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: OT: limit number of connections from browser to my server?
Date: Mon, 16 May 2016 19:33:24 +0000 (UTC)
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On 2016-05-16, Peter Otten <__peter__@web.de> wrote:
> Grant Edwards wrote:
>
>> This is not Python specific, though I'm turning to Python to do some
>> experimentation and to try to prototype a solution.
>> 
>> Is there any way to limit the number of connections a browser uses to
>> download a web page?  Browser writers seems to assume that all https
>> servers are massively parallel server farms with hardware crypto
>> support.
>> 
>> So, when a browser wants to load a page that has the main html file, a
>> css file, a javascript library or two, and a few icons and background
>> bitmaps, they browser opens up a half-dozen SSL connections in
>> parallel.
>
> [brainstorm-mode on]
>
> I think HTTP/2 allows multiple requests over a single TCP connection.

HTTP 1.1 did also.  And our server supports it.  The problem is that
modern browsers won't wait and send requests serially over a single
connection.  They try to "optimize" page load times by opening as many
connections as they cat right away and requesting everything in
parallel.  When the server has a single CPU, that just wastes a lot of
time -- particulary when connections have a high per-connection
overhead like SSL does.

-- 
Grant Edwards               grant.b.edwards        Yow! Is this TERMINAL fun?
                                  at               
                              gmail.com