Re: How to send Broadcast message

Try perldoc IO::Socket. Here's a little example:

use IO::Socket;
$socket = IO::Socket::INET->new
(
    PeerAddr => '1.1.1.1',
    PeerPort => #<open port e.g. 80>,
    Proto => "tcp",
    Type => SOCK_STREAM
) or die "Could Not open port";
print $socket "Server message\n";
close($socket);
[download]

Now, how you interpret messages on the other side is up to you. You can write a server program that mirrors this example above, you can use something like tcpdump with the '-x' option for hexidecimal encoding and decode the message, or you may already have something.

Comment on Re: How to send Broadcast message Select or Download Code

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Re: Re: How to send Broadcast message by ralijani (Acolyte) on Jun 25, 2003 at 12:31 UTC
sory but i want to send message to all microsoft and linux client without any client application on my client use IO::Socket::Multicast; # create a new UDP socket ready to read datagrams on port 1100 my $s = IO::Socket::Multicast->new(LocalPort=>1100); # Add a multicast group $s->mcast_add('225.0.1.1'); # Add a multicast group to eth0 device $s->mcast_add('225.0.0.2','eth0'); # now receive some multicast data $s->recv($data,1024); # Drop a multicast group $s->mcast_drop('225.0.0.1'); # Set outgoing interface to eth0 $s->mcast_if('eth0'); # Set time to live on outgoing multicast packets $s->mcast_ttl(10); # Turn off loopbacking $s->mcast_loopback(0); # Multicast a message to group 225.0.0.1 $s->mcast_send('hello world!','225.0.0.1:1200'); $s->mcast_set('225.0.0.2:1200'); $s->mcast_send('hello again!'); [download] update (broquaint): added `<code>` tags	[reply] [d/l]
Re: Re: Re: How to send Broadcast message by benn (Vicar) on Jun 25, 2003 at 13:27 UTC
A 'client' is a 'client application' - you can broadcast messages wherever you like, but unless something's listening and acting on those messages, they're not a lot of good. You can't just send a message to a machine and expect it to magically do something...what were you expecting, exactly? mcast_send(PopupWindow=>1,PlaySound=>"ding.wav")? Anything that causes the client to take action must aleady be running on the client machine. Two paragraphs down fom the IO::Socket::Multicast synopsis you've pasted in there, it explains how to write a multicast client that will listen to your multicast server. That should get you started, if this is what you need. Cheers, Ben.	[reply]


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