26 lines
535 B
Plaintext
26 lines
535 B
Plaintext
# Example of a udp server which sends a response
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# Listen on port 20000. No host specified means 0.0.0.0
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set s [socket dgram.server 20000]
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# For each request...
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$s readable {
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# Get the request (max 80 chars) - need the source address
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set buf [$s recvfrom 80 addr]
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puts -nonewline "read '$buf' from $addr"
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try {
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set result "$buf = [expr $buf]"
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} on error {msg} {
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set result "Error: $buf => $msg"
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}
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puts ", sending '$result' to $addr"
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# Send the result back to where it came from
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$s sendto $result $addr
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}
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vwait done
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