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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 21:32:40 +0000 (UTC)
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On 2016-05-16, Paul Rubin <no.email@nospam.invalid> wrote:

> Grant Edwards <grant.b.edwards@gmail.com> writes:

>> I've actually got plenty of RAM.  I just can't afford the CPU time
>> it takes to do the public-key crypto stuff that happens each time
>> an SSL connection starts up.
>
> I think you should only have to do that once, then use TLS session
> resumption for additional connections.

Thanks, I'll look into that -- I've seen the term before, but that's
about it.

Is it something the server tells the client to do?

And more to the point, will all popular browsers do it?

> There is also something called TLS-PSK in TLS 1.3.  Do you mind
> saying the application, and what clients you have to support?

The application is something proprietary running on proprietary
hardware (32-bit ARM processor running a typical RTOS and a
BSD-derived network stack).  The web server is a heavily modified
version of GoAhead 2.something.

I have to support the usual suspect list of browsers: IE, Firefox,
Chrome, Safari.

> What TLS stack are you using?

It's not an open-source one.  Beyond that, I can't really say.

> There is generally also a way to configure browsers to limit the
> number of outgoing connections.

I can't ask the browser user to change settings.

> I'll probably be meeting with some TLS experts tomorrow night for
> unrelated reasons, so I can ask them about this if you want.

-- 
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