Re^2: Problem with IO::Select

[timos]

You are right of course. But this does not fix my problem. The results are the same with

while (length($rx_txt) > 0) {
                $sock->recv($rx_txt, 1024);
                $buff.=$rx_txt;
            }

But I have to admit I am a little bit ashamed of myself now. :-)

[Thelonius]

You still aren't reading anything. length(undef) is certainly not greater than 0.

Also, $sock is not the right socket to be reading from anyway.

[timos]

Ah, ok. So I changed it to

my $rx_txt = "something";
while (length($rx_txt) > 0) {
  $conn->recv($rx_txt, 1024);
  $buff.=$rx_txt;
}

But the problem stays the same.

[Thelonius]

You probably meant to write:

while ($rh->recv($rx_txt, 1024) > 0) {
  $buff .= $rx_txt;
}

But that's not good code when using 'select'. That's only okay if you're only handling one connection at a time. If you're only handling one connection at a time, don't use select.

Also, I hope you know that adding a file handle for "~/.somefile" only makes sense if it's a fifo (named pipe).

There are actually a lot of problems with your code. You should probably look at something somebody else has written. I recommend The Perl Cookbook, although there are a lot of free examples scattered about the internet.

[tye]

"can_read" really means "trying to read won't block", which means that end-of-file will cause can_read to keep returning "true" forever. That might be your problem.

You need to detect end-of-file and then (probably) close the socket and stop asking if you can read from it.