Clearer error message for URL without a hostname
Clearer error message for URL without a hostname

AraHaanOrg/aiohttp,KeepSafe/aiohttp,juliatem/aiohttp,playpauseandstop/aiohttp,hellysmile/aiohttp,KeepSafe/aiohttp,pfreixes/aiohttp,rutsky/aiohttp,pfreixes/aiohttp,AraHaanOrg/aiohttp,arthurdarcet/aiohttp,arthurdarcet/aiohttp,juliatem/aiohttp,KeepSafe/aiohttp,arthurdarcet/aiohttp,hellysmile/aiohttp,rutsky/aiohttp,rutsky/aiohttp,Eyepea/aiohttp