本项目需要对应的后端接口、信令环境才能正常运行,本文章只涉及前端内容。
项目依赖模块:
项目需求
模拟sip话机频繁向服务器发起注册请求,以得到服务器最大sip注册数
项目实现概述
代码分析
1. 引入项目所需模块
var websocket = require('ws'), superagent = require('superagent'), tskmd5 = require('./tsk_md5') const readline = require('readline');
2. 创建readline 接口实例
const rl = readline.createinterface({ input: process.stdin, output: process.stdout, prompt: 'ohai> ' });
3. 定义所需变量
var obj = {}, httpheader = {}, baseurl ='', pass = '', ip = '', websocketurl = '' var keepwsalive, readystate
4. 读取readline 输入信息函数
function getreadline() { const lines = []; // 用于保存所有输入信息。 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'); // 开始注册事件 loopregister(obj) } } }); // close事件监听 rl.on("close", function(){ // 结束程序 process.exit(0); }); }
终端运行截图
5.注册事件中包含几个动作
1)设置httpheader:浏览器与服务器ajax请求有固定的请求头信息,此处模拟浏览器的请求头信息。
用于后续发送请求进行用户登录鉴权。
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) // 用户鉴权函数 }
2)用户登录鉴权(本项目中与服务器交互需要使用,具体使用看服务器端设置)
<!--账号密码 鉴权--> function getchanllenge(accountdata, username) { console.log('start getchangllenge') var challenge = '' //获取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 鉴权--> function getcookie(challenge, username) { var md5key = tskmd5.md5.hexdigest(challenge + pass) // md5加密用户登录密码 var subdata={ token: md5key, action: 'login', user: username } // 开始请求进行用户登录密码鉴权,类似ajax请求 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) { // 登录鉴权通过,开始执行sip注册 var cookie = responce.response.cookie // 注册函数 startsocket(username) } else { console.log('get cookie is error, result.body.status is not 0') } } }) }
与服务器建立websocket连接
项目中信令交互信息均通过websocket发送
var ws = new websocket(websocketurl, "sip"); # 注意建立的是sip类型的websocket ws.on('open', function open() { console.log('ws open message1' + message1) readystate = websocket.open // 发送相关信息 ws.send(message); }); ws.on('message', function incoming(data) { a++; var dataarr = data.split('\r\n') if (dataarr[0].indexof('401') > -1 && a === 1) { // 发送注册信令函数(其中发送信令信息,均参考浏览器的发送头进行拼接) startregister(ws, dataarr, username) } else if (dataarr[0].indexof('200')) { // ws.close() // console.log('register sucess...') } else { } });
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