[Twisted-web] Re: why doesn't work nevow.example.callremote with IE (InternetExplorer)?

[Peter Arwanitis]

Hmm first self-reply...

after irc and own deja-vu... I started to compare chatola based on older
lifepage implementation, because same
req.notifyFinish().addErrback(...)
thingy was used in
nevow.livepage.OutputHandlerResource.renderHTTP(...)

and strange... chatola based on this can handle leaving IE's immediately!

But I cannot see the difference of the two connection-pattern
(athena/livepage)... there are too much surrounding code-jungle for me

anybody else?
Peter
(=PA=)

On 11/9/05, Peter Arwanitis <spex66 at gmx.net> wrote:
>
> Hi there,
>
> callremote example demonstrates the notifyOnDisconnect() feature for
> athena-livepages (using twisted2.0.1 / nevow0.6.0 / python2.3.5 on winXP).
>
> Firefox triggers with a reload of the page or a change to another page the
> callbacks added to notifyOnDisconnect _immediately_ --> perfect!
> 'A client lives!'
> 'A client dies!' twisted.internet.error.ConnectionDone: Connection was
> closed cleanly.
> 'A client lives!'
> 'A client dies!' twisted.internet.error.ConnectionDone: Connection was
> closed cleanly.
> ...
> Why doesn't this work with IE, too??? The connections dies in a delayed
> timeout... but not immediately. The problem is, that meanwhile open
> connections from IE to webserver was established, and they are limited to
> TWO!!! And the whole things hangs, waiting for timeouts to free the
> connections.So this will be a serious bottleneck! (at least for my design
> :-/)
> 'A client lives!'
> 'A client lives!'
> ...
> ...
> later: 'A client dies!' twisted.internet.error.TimeoutError: User timeout
> transports created by client.
>
> thanks to exarkun on irc and his hint to
> http://www.winguides.com/registry/display.php/536, you can play with
> number of needed connections, but leaving / refreshing a livepage
>
> The mechanism is based on twisted.web.server.Request.notifyFinish() and
> hopes that this one is throwing a
> "twisted.internet.error.ConnectionDone: Connection was closed cleanly." if
> the connection got lost.
>
> But this error to trigger the req.notifyFinish().addErrback(...) does not
> come with IE leaving or reloading a page.
>
> Is this specific for me, or can somebody else reproduce this "feature".
>
> Does someone have deeper knowledge about the live-connection hold with IE
> from athena? And how notifyOnDisconnect() could work with IE, too???
>
> thanks a lot
>
> greetings from germany, munich
> Peter
> (=PA=)
>
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