Re: url-retrieve may cause hang

[David Reitter]

On 17 Oct 2006, at 15:57, Magnus Henoch wrote:

> I have attached my first attempt.  There are two problems with it:

Your patch works fine for my error case.

> - DNS lookups are still synchronous.  It seems we would need an
>   external library like GNU adns for that.

It seems like I'm getting an instant error when the firewall is  
configured to delay/swallow UDP packets - which is good.

> - There is no protocol for letting the callback know that retrieval
>   failed.  Without this patch, the caller would immediately get an
>   error,

Yes, signaling in your sentinel is not a good idea, as it would be  
difficult (impossible?) to catch the error from outside.

Thanks again for reacting so quickly, and apologies that I did not  
report this earlier.