fmt improvements

cmd/httpcat/main.go

@@ -20,9 +20,9 @@ var _ http.Handler = &CatHandler{}
 func (cs *CatHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	log.Printf("[%s] %s %s", req.Host, req.Method, req.URL.Path)
 
-	w.Write([]byte(fmt.Sprintf("HTTP1.1 %s %s\n", req.Method, req.URL.Path)))
+	w.Write([]byte(fmt.Sprintf("%s %s %s\n", req.Proto, req.Method, req.URL.Path)))
 	for k, v := range req.Header {
-		w.Write([]byte(fmt.Sprintf("%s: %s\n", k, strings.Join(v, ", "))))
+		w.Write([]byte(fmt.Sprintf("%s: %s\n", k, strings.Join(v, "; "))))
 	}
 	w.Write([]byte{'\n'})