func (p proxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {
func (p proxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {