Fix: close http Response body on provider (#1154)

adapters/provider/vehicle.go

@@ -107,6 +107,7 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	buf, err := ioutil.ReadAll(resp.Body)
 	if err != nil {

component/vmess/h2.go

@@ -46,6 +46,7 @@ func (hc *h2Conn) establishConn() error {
 		},
 	}
 
+	// it will be close at :  `func (hc *h2Conn) Close() error`
 	res, err := hc.ClientConn.RoundTrip(&req)
 	if err != nil {
 		return err

tunnel/connection.go

@@ -34,6 +34,8 @@ func handleHTTP(request *inbound.HTTPAdapter, outbound net.Conn) {
 		}
 
 	handleResponse:
+		// resp will be closed after we call resp.Write()
+		// see https://golang.org/pkg/net/http/#Response.Write
 		resp, err := http.ReadResponse(outboundReader, req)
 		if err != nil {
 			break