http://f:0/c  s:http h:f port:0 p:/c
http://f:00000000000000/c  s:http h:f port:0 p:/c
http://f:00000000000000000000080/c  s:http h:f p:/c
http://f:b/c
http://f:\s/c
http://f:\n/c  s:http h:f p:/c
http://f:fifty-two/c
http://f:999999/c  s:http h:f port:999999 p:/c
http://f:\s21\s/\sb\s?\sd\s#\se\s
  s:http h:example.org p:/foo/bar
\s\s\t  s:http h:example.org p:/foo/bar
:foo.com/  s:http h:example.org p:/foo/:foo.com/