本項目需要對應的后端接口、信令環境才能正常運行，本文章只涉及前端內容。
項目依賴模塊：
項目需求
模擬SIP話機頻繁向服務器發起注冊請求，以得到服務器最大SIP注冊數
項目實現概述
代碼分析
1. 引入項目所需模塊
var WebSocket = require('ws'), superagent = require('superagent'), tskMD5 = require('./tsk_md5') const readline = require('readline');2. 創建readline 接口實例
const rl = readline.createInterface({ input: process.stdin, output: process.stdout, prompt: 'OHAI> ' });3. 定義所需變量
var obj = {}, httpHeader = {}, baseUrl ='', pass = '', ip = '', websocketUrl = ''var keepWsAlive, readyState4. 讀取readline 輸入信息函數
function getReadline() { const lines = []; // 用于保存所有輸入信息。 console.log('Please input the range of extensions(eg: 1001,1010):/n') rl.on("line", function(line) { if (line ==='') { console.log('The input is empty, please input again:/n') } else { lines.push(line); if (lines.length === 1) { obj.extensionsArr = line.split(','); console.log('Please input the password(eg:1234aa):/n') } else if (lines.length === 2) { obj.password = line; pass = line; console.log('Please input the ip(eg:192.168.124.125):/n') } else if (lines.length === 3) { websocketUrl = 'ws://' + line + ':8089/ws'; obj.websocketUrl = websocketUrl; obj.ip = line; ip = line; console.log('Starting register.../n'); // 開始注冊事件 loopRegister(obj) } } }); // close事件監聽 rl.on("close", function(){ // 結束程序 process.exit(0); }); }終端運行截圖
5.注冊事件中包含幾個動作
1）設置httpHeader：瀏覽器與服務器ajax請求有固定的請求頭信息，此處模擬瀏覽器的請求頭信息。
用于后續發送請求進行用戶登錄鑒權。
function setHttpHeader(username) { httpHeader = { Accept:'application/json, text/javascript, */*; q=0.01', 'Accept-Encoding': 'gzip, deflate', 'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8,pt;q=0.7', 'Cache-Control': 'no-cache', Connection: 'keep-alive', 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8', Cookie: 'TRACKID='+trackid+'; session-identify=sid121076289-1520217430; username=admin; user_id=0', Host: ip +':8089', Origin: 'http://'+ip+':8089', Pragma: 'no-cache', Referer: 'http://'+ip+':8089/gswave/', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 SE 2.X MetaSr 1.0', 'X-Requested-With':'XMLHttpRequest' } var accountData = { action:'challenge', user:username } baseUrl = 'http://'+ip+':8089/webrtccgi?'; getChanllenge(accountData, username) // 用戶鑒權函數 }2）用戶登錄鑒權(本項目中與服務器交互需要使用，具體使用看服務器端設置)
<!--賬號密碼 鑒權-->function getChanllenge(accountData, username) { console.log('start getChangllenge') var challenge = '' //獲取challenge superagent .post(baseUrl) .set(httpHeader) .type('form') .send(accountData) .redirects(0) .end(function(err, result) { if (typeof(result) == 'undefined') { console.error("get challenge is error, result is undefined"); } else { var responce = result.body if(responce && responce.status === 0) { challenge = responce.response.challenge getCookie(challenge, username) } else { console.error('get challenge is error, result.body.status is not 0') } } }); } <!--cookie 鑒權--> function getCookie(challenge, username) { var md5key = tskMD5.MD5.hexdigest(challenge + pass) // MD5加密用戶登錄密碼 var subData={ token: md5key, action: 'login', user: username } // 開始請求進行用戶登錄密碼鑒權，類似ajax請求 superagent .post(baseUrl) .set(httpHeader) .type('form') .send(subData) .redirects(0) .end(function(err, res) { if (typeof(res) == 'undefined') { console.log("get cookie is error, result is undefined"); } else { var responce = res.body if(responce && responce.status === 0) { // 登錄鑒權通過，開始執行SIP注冊 var cookie = responce.response.cookie // 注冊函數 startSocket(username) } else { console.log('get cookie is error, result.body.status is not 0') } } }) }與服務器建立websocket連接
項目中信令交互信息均通過websocket發送
var ws = new WebSocket(websocketUrl, "sip"); # 注意建立的是sip類型的websocket ws.on('open', function open() { console.log('ws open message1' + message1) readyState = WebSocket.OPEN // 發送相關信息 ws.send(message); }); ws.on('message', function incoming(data) { a++; var dataArr = data.split('/r/n') if (dataArr[0].indexOf('401') > -1 && a === 1) { // 發送注冊信令函數（其中發送信令信息，均參考瀏覽器的發送頭進行拼接） startRegister(ws, dataArr, username) } else if (dataArr[0].indexOf('200')) { // ws.close() // console.log('register sucess...') } else { } });以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VeVb武林網。
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