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#!/bin/bash
#https://datatracker.ietf.org/doc/html/rfc6455#page-65
CONTENT=$( cat $1 | base64 -w 0 )
COMMAND='{"type":"UPDATE","'$CONTENT'"}'
LEN=$(printf '%0*x\n' 4 ${#COMMAND})
echo $LEN
LEN=00000138
#text command
OPCODE=81
cat <(echo -n $OPCODE$LEN | xxd -r -p) <(echo -n $COMMAND) >> /tmp/send_signal
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