parse "gopher://null.host:0/H=h\xe7$\xd1\xc0\x82i\xeaM\x83\xedZ\xa9b\xfe\x1a\xbd\xedj\xe0\x16Z\xce\xe9.,P0\xe8ΣΆ\x11T": net/url: invalid control character in URL