tcpmux: support authentication (#3345)

pkg/util/vhost/resource.go

@@ -85,17 +85,3 @@ func notFoundResponse() *http.Response {
 	}
 	return res
 }
-
-func noAuthResponse() *http.Response {
-	header := make(map[string][]string)
-	header["WWW-Authenticate"] = []string{`Basic realm="Restricted"`}
-	res := &http.Response{
-		Status:     "401 Not authorized",
-		StatusCode: 401,
-		Proto:      "HTTP/1.1",
-		ProtoMajor: 1,
-		ProtoMinor: 1,
-		Header:     header,
-	}
-	return res
-}