bug#27119: FTP doesn't time out on ftp.ciril.fr

[Ludovic Courtès]

Hello Ian,

Ian Dunn <address@hidden> skribis:

> Some of the perl links from cpan aren't up to date, so guix will try to cycle 
> through its mirrors.  The problem is that the second one is ftp.ciril.fr, 
> which doesn't time out (or if it does, not for at least 30 minutes).
>
> For example, here's the result of "guix build perl-datetime":
>
> Starting download of 
> /gnu/store/mc2xj0cga6a25zv2f73hbm44y1kyxa5y-DateTime-1.18.tar.gz
>>From 
>>http://mirror.ibcp.fr/pub/CPAN/authors/id/D/DR/DROLSKY/DateTime-1.18.tar.gz...
> ERROR: download failed 
> "http://mirror.ibcp.fr/pub/CPAN/authors/id/D/DR/DROLSKY/DateTime-1.18.tar.gz"; 
> 404 "Not Found"
>
> Starting download of 
> /gnu/store/mc2xj0cga6a25zv2f73hbm44y1kyxa5y-DateTime-1.18.tar.gz
>>From 
>>ftp://ftp.ciril.fr/pub/cpan/authors/id/D/DR/DROLSKY/DateTime-1.18.tar.gz...
>
> And it hangs for longer than I've ever let it run (I think the longest
> I've seen it sit there is 30 minutes).

I’ve tried from a couple of networks as well as over Tor and I cannot
reproduce it.  Does it still happen for you?  (Specifically I used ‘guix
download’ or ‘wget’ with the URL above.)

> Is there a way to specify the timeout in guix?

The ‘ftp-open’ procedure in (guix ftp-client) does allow you to specify
a timeout when opening the connection.  In (guix build download), which
is what is used when running “guix build perl-datetime”, we specify a
default timeout of 10 seconds.  This timeout cannot be changed from the
‘guix’ command line though.

Thanks for your report,
Ludo’.