Either i found a bug or i'm doing something incredibly stupid (my guess is the "stupidity").

I'm using a non-blocking client with IO::Socket::UNIX. Sometimes the script just exits without any error message, even though i'm trying to catch that specific case with an eval. Here is the relevant code:

print "Write to backend $clientid\n";
my $written;
eval {
    print "AAAA\n";
    $written = syswrite($clients{$clientid}->{backendsocket}, $clients
+{$clientid
    print "BBBB\n";
};  
print "X\n";
if($EVAL_ERROR) {
    print "Backend write error: $EVAL_ERROR\n";
    push @toremove, $clientid;
    next;
}

[download]

Most of the time this works fine, but sometimes i just get:

Write to backend someclientid
AAAA

[download]

And then i'm back at the command line without any additional message. Shouldn't eval catch any errors and prevent the script from exiting?

If something goes wrong in syswrite, i'd expect an output like this:

Write to backend someclientid
AAAA
X
Backend write error: some_error_message

[download]

What am i doing wrong here?

perl -e 'use Crypt::Digest::SHA256 qw[sha256_hex]; print substr(sha256_hex("the Answer To Life, The Universe And Everything"), 6, 2), "\n";'

In reply to IO::Socket::UNIX plus syswrite plus eval fails? by cavac

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