Added server for web sockets, plus some refactoring

server/ws-server-go.go

@@ -0,0 +1,43 @@
+package server
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+
+	"golang.org/x/net/websocket"
+)
+
+type WsServer struct {
+	cfg *ServerConfig
+}
+
+type WsHandler func(io.ReadWriter, *ServerConfig)
+
+// This example demonstrates a trivial echo server.
+func (wsServer *WsServer) Listen(urlStr string, handlerFunc WsHandler) {
+	//http.Handle("/", websocket.Handler(EchoHandler))
+	if urlStr == "" {
+		urlStr = "/"
+	}
+	url, err := url.Parse(urlStr)
+	if err != nil {
+		fmt.Println("error while parsing url: ", err)
+	}
+
+	http.Handle(url.Path, websocket.Handler(func(ws *websocket.Conn) {
+		// header := ws.Request().Header
+		// url := ws.Request().URL
+		// //stam := header.Get("Origin")
+		// fmt.Printf("header: %v\nurl: %v\n", header, url)
+		// io.Copy(ws, ws)
+		ws.PayloadType = websocket.BinaryFrame
+		handlerFunc(ws, wsServer.cfg)
+	}))
+
+	err = http.ListenAndServe(url.Host, nil)
+	if err != nil {
+		panic("ListenAndServe: " + err.Error())
+	}
+}