tried to read data from a multicast port but I don't get any data.
The connection is established and the program seems to wait for data, but even if another process
sends some data to this address nothing happens.
I already checked with some Java and a C program that the server process is working correctly.
Any ideas?

my $udpcon  =  "227.50.49.48:9897";

my $sock1 = IO::Socket::INET->new(Proto=>'udp',PeerAddr=>$udpcon);
die "Can't bind to $udpcon: $!\n" unless $sock1;

my $data;
my $len;

print "waiting for data on $udpcon ...\n";

while (1) {
  $len = recv($sock1, $data, 10, 0);
  print $len."\n";

}


In reply to reading from multicast socket by Monky Python

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.