fix(client): don't close stream until EOF
fix(client): don't close stream until EOF

Closes #543

rschulman/hyper,mitsuhiko/hyper,lame-nickname/hyper,Keats/hyper,achanda/hyper,Twey/hyper,hannobraun/hyper,golddranks/hyper,sfackler/hyper,mneumann/hyper,bonifaido/hyper,mre/hyper,fuchsnj/hyper,erickt/hyper,giftcards/hyper,mfeckie/hyper,hyperium/hyper,clatour/hyper,Keats/hyper,youprofit/hyper,nickgonzales/hyper,Keats/hyper,yazaddaruvala/hyper,Twey/hyper,markuskobler/hyper,yangxingpping/hyper,hannobraun/hyper,ianks/hyper,fhahn/hyper,tshepang/hyper,markuskobler/hyper,markuskobler/hyper,hyperium/hyper,hannobraun/hyper,reem/hyper,fengsp/hyper,peterhj/hyper,yazaddaruvala/hyper,golddranks/hyper,manuel-woelker/hyper,jmmaranan/hyper,nickgonzales/hyper,Twey/hyper,steveklabnik/hyper,hyperium/hyper,golddranks/hyper,tshepang/hyper,nickgonzales/hyper,tempbottle/hyper,bheesham/hyper,pyfisch/hyper,softprops/hyper,TimNN/hyper,tshepang/hyper