ping

ping.js

/**
 * 构建TCP客户端
 */
const fs = require('fs');
/* 引入net模块 */
var net = require("net");
const uuidv1 = require('uuid/v1');

async function main(){

  for(let i = 0; i < 1; i++) {
    rq();
  }
  
}

main();



 function rq(){

  return new Promise(function(resolve, reject) {

    let start = new Date().getTime();

    /* 创建TCP客户端 */
    var client = net.Socket();

    /* 设置连接的服务器 */
    client.connect(8000, 'xxx', function () {
        console.log("connect the server");

        client.write('aa');
    })

    /* 监听服务器传来的data数据 */
    client.on("data", function (data) {
        let end = new Date().getTime();

        console.log("the data of server is " + data.toString(), (end - start));

    })

    /* 监听end事件 */
    client.on("end", function () {
        console.log("data end");
        resolve();
    })

    client.on("close", function () {
        console.log("data close");
        resolve();
    })

    client.on("error", function (e) {
        console.log("data error", e);
        reject();
    })
    
  });

}