Tests which characters are valid before a protocol relative URL in fetch().
fetch("$[chr]//fuzz.shazzer.co.uk/$[rand]?$[i]")fetch("0x00//fuzz.shazzer.co.uk/n9cveirr1ze?0")fetch("0x01//fuzz.shazzer.co.uk/gvxwvqgckxj?1")fetch("0x02//fuzz.shazzer.co.uk/owifxx2awkh?2")fetch("0x03//fuzz.shazzer.co.uk/69cayua4rz9?3")fetch("0x04//fuzz.shazzer.co.uk/8fovn6h7vo6?4")fetch("0x05//fuzz.shazzer.co.uk/mjjs0a8o6c?5")fetch("0x06//fuzz.shazzer.co.uk/vvxkuzlgb4m?6")fetch("0x07//fuzz.shazzer.co.uk/5u2qcw9mh44?7")fetch("0x08//fuzz.shazzer.co.uk/4js5sf4qpnq?8")fetch("0x09//fuzz.shazzer.co.uk/ehoxgikxwk9?9")fetch("0x0B//fuzz.shazzer.co.uk/r0q9de7slr?11")fetch("0x0C//fuzz.shazzer.co.uk/0x015xebb7i?12")fetch("0x0E//fuzz.shazzer.co.uk/3qndsjuhz2j?14")fetch("0x0F//fuzz.shazzer.co.uk/rl8wtruf5q?15")fetch("0x10//fuzz.shazzer.co.uk/1hrj5l97z8g?16")fetch("0x11//fuzz.shazzer.co.uk/flq2evnslam?17")fetch("0x12//fuzz.shazzer.co.uk/wm596o3rao?18")fetch("0x13//fuzz.shazzer.co.uk/yy2o1umb5al?19")fetch("0x14//fuzz.shazzer.co.uk/xm4ogw22u?20")fetch("0x15//fuzz.shazzer.co.uk/nku33rxl2qi?21")