httpproxy: cancel requests when client closes a connection
httpproxy: cancel requests when client closes a connection

joshix/etcd,etcd-io/etcd,etcd-io/etcd,xiang90/etcd,ajityagaty/etcd,lorneli/etcd,li-ang/etcd,glevand/coreos--etcd,glevand/coreos--etcd,cockroachdb/etcd,vimalk78/etcd,sinsharat/etcd,fanminshi/etcd,gyuho/etcd,mqliang/etcd,ajityagaty/etcd,dannysauer/etcd,ajityagaty/etcd,rnaveiras/etcd,coreos/etcd,bdarnell/etcd,mqliang/etcd,mkumatag/etcd,coreos/etcd,sebrandon1/etcd,rnaveiras/etcd,sinsharat/etcd,mkumatag/etcd,sebrandon1/etcd,vimalk78/etcd,dannysauer/etcd,mqliang/etcd,bdarnell/etcd,li-ang/etcd,mkumatag/etcd,joshix/etcd,etcd-io/etcd,xiang90/etcd,lorneli/etcd,gyuho/etcd,fanminshi/etcd,rnaveiras/etcd,cockroachdb/etcd