Added websocket header test and benchmark tool

tools/websocket_echo/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gorilla/websocket"
+)
+
+var upgrader = websocket.Upgrader{
+	CheckOrigin: func(r *http.Request) bool {
+		return true
+	},
+}
+
+func echo(w http.ResponseWriter, r *http.Request) {
+	conn, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		log.Println("Upgrade error:", err)
+		return
+	}
+	defer conn.Close()
+
+	for key, values := range r.Header {
+		for _, value := range values {
+			message := fmt.Sprintf("%s: %s", key, value)
+			if err := conn.WriteMessage(websocket.TextMessage, []byte(message)); err != nil {
+				log.Println("WriteMessage error:", err)
+				return
+			}
+		}
+	}
+
+	if err := conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, "")); err != nil {
+		log.Println("CloseMessage error:", err)
+		return
+	}
+}
+
+func main() {
+	http.HandleFunc("/echo", echo)
+	log.Fatal(http.ListenAndServe(":8888", nil))
+}