curl -v -k -D /tmp/headers -H "Host: HOSTHEADER" --http2 -o /tmp/file_0 https://127.0.0.1/firstfile -o /tmp/file_1 https://127.0.0.1/secondfile -o /tmp/file_2 https://127.0.0.1/thirdfile.txt ; md5sum /tmp/file_?