do not break check host if invalid chars supplied
do not break check host if invalid chars supplied

Lao-liu/mist.io,munkiat/mist.io,munkiat/mist.io,DimensionDataCBUSydney/mist.io,afivos/mist.io,afivos/mist.io,johnnyWalnut/mist.io,munkiat/mist.io,johnnyWalnut/mist.io,Lao-liu/mist.io,Lao-liu/mist.io,DimensionDataCBUSydney/mist.io,DimensionDataCBUSydney/mist.io,afivos/mist.io,munkiat/mist.io,Lao-liu/mist.io,johnnyWalnut/mist.io,DimensionDataCBUSydney/mist.io