Perl non blocking sockets on 5.2
Chris Ochs
freebsd at paymentonline.net
Sun Feb 22 15:33:27 PST 2004
This code is from Cache::Memcached which is a perl interface to memcached.
It works as is on 4.9, but on 5.2-RC the connect returns undef unless I
comment out the calls to IO::Handle::blocking.
Seems like there is some socket behavior which is different in 5.x then 4.x
that would cause this. Anyone have any ideas?
Chris
------------------------------------------
sub _connect_sock { # sock, sin, timeout
my ($sock, $sin, $timeout) = @_;
$timeout ||= 0.25;
my $block = IO::Handle::blocking($sock, 0) if $timeout;
my $ret = connect($sock, $sin);
if (!$ret && $timeout && $!{'EINPROGRESS'}) {
my $win='';
vec($win, fileno($sock), 1) = 1;
if (select(undef, $win, undef, $timeout) > 0) {
$ret = connect($sock, $sin);
# EISCONN means connected & won't re-connect, so success
$ret = 1 if !$ret && $!{'EISCONN'};
}
}
IO::Handle::blocking($sock, $block) if $timeout;
return $ret;
}
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