[TAP] sync vs async - time outs

[Gerard]

Dear colleagues
 
Guy wrote:
> However, I see no reason why a TAP installation that always operates  
> quickly has to have the asynchronous mode. I would be happy for the  
> asynchronous interfaces to be made optional; but only on the  
> understanding that most TAP services will need them and that software  
> authors be prepared to add them when that need is discovered.
>  
I support this, but think we should let a service specify what they think is
"quickly".
 
If I am not mistaken the current TAP spec does not explicitly specify a
possible query timeout parameter. 
I think every service will actually implement such a timeout, whether /sync
or /async.
(As Guy writes as well, it is very easy to write queries that would run
"forever".)
Is such a parameter part of the VOSI metadata?
If not I propose it is added to the TAP specification.
 
best regards
 
Gerard
 
 

 
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