Hello, I realize that there's been a few very similar threads on hanging sockets but none of the fixes that worked for others seem to work for this issue, so I thought I'd add it to the heap.

I've got a POE TCP server running on localhost on a Windows box with ActivePerl 5.8.8. A pure-POE client-server setup works fine. Both sides can read/write. However on the client side I just want a simple connect->write->read->disconnect. No need for the extra event handling. So I tried using IO::Socket::INET to do it. The problem is, no matter what I do the script hangs while trying to read from the socket. I've tried reading with <$socket> in a loop. I've tried it outside of a loop. I've tried sysread($socket, $buf, 1024) in and out of a loop. I've tried doing shutdown($socket, 1). I've tried setting $/ to some other string and passing it through the server and it still hangs. Right now the code looks like this: 
use IO::Socket::INET;

$socket = IO::Socket::INET->new(
    PeerAddr => '127.0.0.1',
    PeerPort => 5555,
    Proto    => 'tcp',
    Type     => SOCK_STREAM,
    Timeout => 5,
) or die $@;

$socket->autoflush(1);

print $socket "Hello!\n";

my $line = "";
sysread($socket, $line, 1024);

print "ANSWER: " . $line;

close($socket);

[download]
The server receives the "Hello!" and responds, but the client hangs on the sysread without ever receiving any data.

Thanks for taking the time to read this.

In reply to IO::Socket hanging in ActivePerl 5.8.8 by c0bra

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