testDomainfronting.sh

#!/bin/bash
input=$1
while read -r line
do
  if [ $(curl https://$line/ --header 'Host: snowflake-broker.torproject.net.global.prod.fastly.net' -v 2>&1 |grep '404 page not found'|wc -l) -gt 0 ]
  then
  echo $line
  fi
done < "$input"

testDomainfronting2.sh

#!/bin/bash
input=$1
while read -r line
do
  if [ $(curl https://$line/proxy --header 'Host: snowflake-broker.torproject.net.global.prod.fastly.net' -v 2>&1 |grep 'X-Session-ID'|wc -l) -gt 0 ]
  then
  echo $line
  fi
done < "$input"