On Sat, 01 Aug 2026 01:06:11 +0100, Ian Jackson wrote:

Here's some of the code in Simple.pm:

   while ( sysread( STDIN, my $buff, 1 ) ) {
       last if $buff eq "\n";
       $chunk .= $buff;
   }

Suppose a signal arrives while this is executing, but doesn't cause
perl to exit or anything.  Perl's signal handling machinery doesn't
set SA_RESTART nowadays.  read(2) will return -1 setting errno to
EINTR.  And then this will fail.

(Normal perl IO operations, so not sysread and syswrite, have the
:perlio layer which does retrying on EINTR, so are fine.)

IMO HTTP::Server::Simple ought to handle EINTR from sysread (returns
undef, sets $!) by restarting teh call.

Thanks for you bug report, which I've forwarded to
https://rt.cpan.org/Ticket/Display.html?id=180563

Given that upstream doesn't seem to be very active …

I could try to prepare a patch, if you like.

… this would be great.


Cheers,
gregor

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