[whatwg] WebSockets: what to do when there are too many open connections

Dmitry Titov dimich at chromium.org
Thu May 13 17:36:31 PDT 2010

As an example from a bit different area, in Chrome the Web Workers today
require a separate process per worker. It's not good to create too many
processes so there is a relatively low limit per origin and higher total
limit. Two limits help avoid situation when 1 bad page affects others. Once
limit is reached, the worker objects are created but queued, on a theory
that pages of the same origin could cooperate, while if a total limit is
blown then hopefully it's a temporary condition. Not ideal but if there
should be a limit we thought having 2 limits (origin/total) is better then
have only a total one.

On Thu, May 13, 2010 at 4:55 PM, Perry Smith <pedzsan at gmail.com> wrote:

> On May 13, 2010, at 12:40 PM, Mike Shaver wrote:
> > The question is whether you queue or give an error.  When hitting the
> > RFC-ish per-host connection limits, browsers queue additional requests
> > from <img> or such, rather than erroring them out.  Not sure that's
> > the right model here, but I worry about how much boilerplate code
> > there will need to be to retry the connection (asynchronously) to
> > handle failures, and whether people will end up writing it or just
> > hoping for the best.
> Ah.  Thats a good question.  (Maybe that was the original question.)
> Since web sockets is the topic and as far as I know web sockets are only
> used by javascript, I would prefer an error over queuing them up.
> I think javascript and browser facilities have what is needed to create its
> own retry mechanism if that is what a particular situation wants.  I don't
> see driving the retry via a scripting language to be bad.  Its not that hard
> and it won't happen that often.  And it gives the javascript authors more
> control and choices.
> Thats my vote...
> pedz
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