> > proc udpEvent {chan} {
> >     set data [read $chan]
> >     set peer [fconfigure $chan -peer]
> >     puts "$peer [string length $data] '$data'"
> >     if {[string match "QUIT*" $data]} {
> >         close $chan
> >         set ::forever 1
> >     }
> >     return

> > }

> > # Select a subnet and the port number.
> > set subnet 255.255.255.0
> > set port   7767

> > # Create a listening socket and configure for sending too.
> > set s [udp_open $port]
> > fconfigure $s -buffering none -blocking 0
> > fconfigure $s -broadcast 1 -remote [list $subnet $port]
> > fileevent $s readable [list udpEvent $s]

> > # Announce our presence and run
> > puts -nonewline $s "hello, world"
> > set forever 0
> > vwait ::forever

> > exit

> > Hi, Can someone please explain the execution sequence of this code..
> > It is meant to braodcast message.

> The fileevent and proc take care of incoming packets; guess you don't
> need help for this part.
> The writing part prepares for broadcast (fconfigure -broadcast 1 -
> remote ...), and the actual packet sending occurs in the puts
> (immediately because of -buffering none).

> Only this won't work because your broadcast address rather looks like
> a netmask ;-)

> -Alex