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# Example of a udp server which sends a response
# Listen on port 20000. No host specified means 0.0.0.0
file delete unix.sock
set s [socket unix.dgram.server unix.sock]
puts "Listening on dgram socket [$s sockname]"
set count 0
# For each request...
$s readable {
# Get the request (max 80 chars) - need the source address
set buf [$s recvfrom 80 addr]
puts -nonewline "read '$buf' from client $addr"
try {
set result "$buf = [expr $buf]"
} on error {msg} {
set result "Error: $buf => $msg"
}
puts ", sending '$result' to client $addr"
# Send the result back to where it came from
$s sendto $result $addr
}
# Handle signals so the socket is removed on exit
signal handle SIGINT SIGTERM
catch -signal {
vwait done
}
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