cors-anywhere.sh

#!/bin/bash

HEADER=$(mktemp)
BODY=$(mktemp)
REQ=$(mktemp)
FIFO=/tmp/fifo.$$
mkfifo $FIFO

trap "rm -f $HEADER $BODY $REQ $FIFO; exit" INT

run() {
    URL=$(head -1 | cut -d' ' -f 2 | sed 's/^.//g')
    if [ ! -z "$URL" ]; then
        echo "Request: $URL" >&2
        curl -sL -D $HEADER $URL > $BODY
        cat <<EOM
HTTP/1.1 200 OK
Access-Control-Allow-Origin: *

EOM
        cat $BODY
    fi
}

while :; do
    cat $FIFO | run | nc -l 8082 >$FIFO
done