url http://example.com/index.html expected abcdefghijklmnopqrstuvwxyz1234567890abcdef ---------- HEAD /index.html HTTP/1.1 Host: example.com Connection: close User-Agent: HTTP-Tiny/VERSION ---------- HTTP/1.1 200 OK Date: Thu, 03 Feb 1994 00:00:00 GMT Content-Type: text/plain Content-Length: 44