Re: Perl DBI::Pg - Stop button

What does 'out of band' mean, ( except a entertainment booking agent's worst nightmare ;-)?

Richard Huxton wrote:
> On Wednesday 07 May 2003 3:55 am, Tom Lane wrote:
>
>>Mr Mat psql-mail <psql-mail(at)freeuk(dot)com> writes:
>>
>>>Whats the best way to terminate a query when the user presses the stop
>>>button?
>>
>>Send a cancel request.
>>
>>I don't know whether the DBI/DBD stack supports that though :-(
>
>
> I think the thrust of Matt's question was whether there is any way to know
> when the user presses "stop" in their browser from the server end.
> Unfortunately, since HTTP is a stateless protocol, the short answer is no.
>
> This is of course simple if you have a java applet sitting on your page
> connecting to your server - it can signal out of band.
>
> [Not often I follow-up a post by Tom ;-]