HTTP/1.1 200 OK
content-type: text/plain
transfer-encoding: chunked

37
ABCDEFGHIJKLMNOPQRSTUVWXYZ: abcdefghijklmnopqrstuvwxyz

3a
abcdefghijklmnopqrstuvwxyz: @#*ABCDEFGHIJKLMNOPQRSTUVWXYZ

3A
abcdefghijklmnopqrstuvwxyz: *#@ABCDEFGHIJKLMNOPQRSTUVWXYZ

0