這篇文章主要介紹“如何基于Go實現(xiàn) websocket”,在日常操作中,相信很多人在如何基于Go實現(xiàn) websocket問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”如何基于Go實現(xiàn) websocket”的疑惑有所幫助!接下來,請跟著小編一起來學習吧!
金沙網(wǎng)站建設公司成都創(chuàng)新互聯(lián)公司,金沙網(wǎng)站設計制作,有大型網(wǎng)站制作公司豐富經(jīng)驗。已為金沙上1000家提供企業(yè)網(wǎng)站建設服務。企業(yè)網(wǎng)站搭建\外貿(mào)網(wǎng)站制作要多少錢,請找那個售后服務好的金沙做網(wǎng)站的公司定做!
WebSocket協(xié)議是基于TCP的一種新的網(wǎng)絡協(xié)議。它實現(xiàn)了瀏覽器與服務器全雙工(full-duplex)通信——允許服務器主動發(fā)送信息給客戶端。
《WebSocket實現(xiàn)實時雙向通信》已經(jīng)介紹java與android如何基于websocket通信。
在golang語言中,目前有兩種比較常用的實現(xiàn)方式:一個是golang自帶的庫,另一個是gorilla,功能強大。
go get github.com/gorilla/websocket
websocket實現(xiàn)代碼
package gowebsocket import ( "encoding/json" "goweb/common/response" "log" "net/http" "strconv" "github.com/gin-gonic/gin" "github.com/gorilla/websocket" ) // ClientManager is a websocket manager type ClientManager struct { Clients map[*Client]bool Broadcast chan []byte Register chan *Client Unregister chan *Client } // Client is a websocket client type Client struct { ID int Socket *websocket.Conn Send chan []byte } // Message is return msg type Message struct { Sender string `json:"sender,omitempty"` Recipient string `json:"recipient,omitempty"` Content string `json:"content,omitempty"` } // Manager define a ws server manager var Manager = ClientManager{ Broadcast: make(chan []byte), Register: make(chan *Client), Unregister: make(chan *Client), Clients: make(map[*Client]bool), } //啟動websocket服務 // Start is 項目運行前, 協(xié)程開啟start -> go Manager.Start() func (manager *ClientManager) Start() { for { log.Println("<---管道通信--->") select { case conn := <-Manager.Register: log.Printf("新用戶加入:%v", conn.ID) Manager.Clients[conn] = true jsonMessage, _ := json.Marshal(&Message{Content: "Successful connection to socket service"}) Manager.Send(jsonMessage, conn) case conn := <-Manager.Unregister: log.Printf("用戶離開:%v", conn.ID) if _, ok := Manager.Clients[conn]; ok { close(conn.Send) delete(Manager.Clients, conn) jsonMessage, _ := json.Marshal(&Message{Content: "A socket has disconnected"}) Manager.Send(jsonMessage, conn) } case message := <-Manager.Broadcast: jsonMessage, _ := json.Marshal(&Message{Content: string(message)}) for conn := range Manager.Clients { select { case conn.Send <- jsonMessage: default: close(conn.Send) delete(Manager.Clients, conn) } } } } } // Send is to send ws message to ws client func (manager *ClientManager) Send(message []byte, ignore *Client) { for conn := range manager.Clients { // if conn != ignore { //向除了自己的socket 用戶發(fā)送 conn.Send <- message // } } } func (c *Client) Read() { defer func() { Manager.Unregister <- c c.Socket.Close() }() for { _, message, err := c.Socket.ReadMessage() if err != nil { Manager.Unregister <- c c.Socket.Close() break } log.Printf("讀取到客戶端的信息:%s", string(message)) Manager.Broadcast <- message } } func (c *Client) Write() { defer func() { c.Socket.Close() }() for { select { case message, ok := <-c.Send: if !ok { c.Socket.WriteMessage(websocket.CloseMessage, []byte{}) return } log.Printf("發(fā)送到到客戶端的信息:%s", string(message)) c.Socket.WriteMessage(websocket.TextMessage, message) } } } // xxx/ws/2 2表示客戶端userId 編號 //WsHandler socket 連接 中間件 作用:升級協(xié)議,用戶驗證,自定義信息等 func WsHandler(c *gin.Context) { userId, err := strconv.Atoi(c.Param("userId")) if err != nil { response.FailResult(http.StatusBadRequest, err.Error(), c) return } conn, err := websocket.Upgrade(c.Writer, c.Request, nil, 1024, 1024) if err != nil { http.NotFound(c.Writer, c.Request) return } //可以添加用戶信息驗證 client := &Client{ ID: userId, Socket: conn, Send: make(chan []byte), } Manager.Register <- client go client.Read() go client.Write() }
入口引用
go gowebsocket.Manager.Start() this.GET("/ws/:userId", gowebsocket.WsHandler)
測試
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> .body{text-align: center;} #open{width: 120px;height: 35px;} #close{width: 120px;height: 35px;} #text{display: inline-block;margin: auto;margin-top: 10px;margin-bottom: 10px;width: 240px;} </style> </head> <body class="body"> <button id="open">打開連接</button> <button id="close">關閉連接</button> <br/> <input type="text" name="text" id="text" value="" /> <br/> <button id="send">發(fā)送</button> <div id="msg"> </div> </body> <script> var openbtn = document.getElementById("open") var closebtn = document.getElementById("close") var text = document.getElementById("text") var send = document.getElementById("send") var msg = document.getElementById("msg") var websocket openbtn.onclick = function(){ websocket = new WebSocket("ws://localhost:8080/api/v1/ws/11") websocket.onopen=function(){ console.log("connected"); } websocket.onmessage = function(e){ console.log(e); msg.innerHTML += '<br/>接收:'+e.data; } websocket.onclose=function(e){ console.log("closed",e); } } closebtn.onclick=function(){ websocket.close(1000,"close") } send.onclick=function(){ var msg = text.value websocket.send(msg) } </script> </html>
到此,關于“如何基于Go實現(xiàn) websocket”的學習就結束了,希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習,快去試試吧!若想繼續(xù)學習更多相關知識,請繼續(xù)關注創(chuàng)新互聯(lián)網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬嵱玫奈恼拢?/p>
網(wǎng)站標題:如何基于Go實現(xiàn)websocket
URL網(wǎng)址:http://muchs.cn/article0/jpijoo.html
成都網(wǎng)站建設公司_創(chuàng)新互聯(lián),為您提供用戶體驗、建站公司、營銷型網(wǎng)站建設、網(wǎng)站設計公司、網(wǎng)站策劃、ChatGPT
聲明:本網(wǎng)站發(fā)布的內(nèi)容(圖片、視頻和文字)以用戶投稿、用戶轉載內(nèi)容為主,如果涉及侵權請盡快告知,我們將會在第一時間刪除。文章觀點不代表本網(wǎng)站立場,如需處理請聯(lián)系客服。電話:028-86922220;郵箱:631063699@qq.com。內(nèi)容未經(jīng)允許不得轉載,或轉載時需注明來源: 創(chuàng)新互聯(lián)