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16 lines
374 B
Bash
Executable file
16 lines
374 B
Bash
Executable file
#! /bin/sh
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port=8888
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host=[${1:-::1}]
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blooper=/tmp/bloop.$$
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trap "rm $blooper" 0
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echo foo | socat -t 0.01 STDIO UDP6:$host:$port | tail -n +5 > $blooper
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for i in $(seq 8); do
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result=$(socat -t 0.01 STDIO UDP6:$host:$port < $blooper | awk -F': ' '(NF > 1) {print $2; exit;}')
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port=$(printf "%d" "0$result")
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echo "next port: $port ($result)"
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done
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echo $result
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