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Re^2: GUI with HTTP::Daemon

by Juerd (Abbot)
on Dec 19, 2004 at 21:14 UTC ( #416056=note: print w/replies, xml ) Need Help??


in reply to Re: GUI with HTTP::Daemon
in thread GUI with HTTP::Daemon

Doesn't pretty much every browser now support Connection: Keep-Alive?

Yes, but the browser usually closes the socket when it's done rendering a page, IIRC.

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }

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Re^3: GUI with HTTP::Daemon
by bbfu (Curate) on Dec 20, 2004 at 00:18 UTC

    Ah, that may well be the case. I thought that the browser kept it open until the site was left or the window closed but I can certainly see how it might make sense to close it when done rendering. Oh well.

    Hrm. If the browser does indeed close the connection after rendering the page, what about opening your own connection manually via javascript? Are javascript sockets automatically closed when the page is closed / unloaded? I would think they would be, so that means you could perhaps simply open a connection to a "keep alive" server, stick it in a globally scoped variable, and then just forget about it. I haven't done enough with javascript sockets to know if this is feasible. Alternatively, you could perhaps use a hidden frame that never finishes rendering to accomplish the same effect.

    bbfu
    Black flowers blossom
    Fearless on my breath

      With the growing ubiquity of the XMLHttpRequest object in browsers now, you could have the app ping the server with requests every so often and have the server watch for this heartbeat to die.

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