54.HarmonyOS鸿蒙系统 App(ArkTS)tcp socket套接字网络连接

import socket from '@ohos.net.socket';
import process from '@ohos.process';
import wifiManager from '@ohos.wifiManager';import common from '@ohos.app.ability.common';let tcp = socket.constructTCPSocketInstance();
//let ipAddress = wifiManager.getIpInfo().ipAddress; //真机测试
//let local_ip2 = (ipAddress>>24 &0xFF)+"."+(ipAddress>>16 &0xFF)+"."+(ipAddress>>8 &0xFF)+"."
//+(ipAddress &0xFF) //真机测试
let local_ip2 = '127.0.0.1' //用于模拟器，真机则屏蔽此处@Entry
@Component
struct Index {@State message: string = 'Hello World'@State local_ip:string = local_ip2@State local_port:number =6666@State ip_addr:string ='192.168.10.104'@State port:number =8080@State send_msg:string ='send content'@State recv_msg:string =''build() {Column() {Row(){Text(' ')}Row(){Text('TCP socket测试连接').fontSize(38).fontColor(Color.White).backgroundColor(Color.Blue)}Row(){Text('本机IP:').fontSize(28).backgroundColor(Color.Green)TextInput({text:`${this.local_ip}`}).fontSize(28).width(280).backgroundColor(Color.Transparent).onChange((value:string)=>{this.local_ip = value})}Row(){Text('端口:').fontSize(28).backgroundColor(Color.Green)TextInput({text:`${this.local_port}`}).fontSize(28).width(280).backgroundColor(Color.Transparent).onChange((value:string)=>{this.local_port = parseInt(value, 10); //字符转数字})}Row(){Text('服务器IP:').fontSize(28).backgroundColor(Color.Green)TextInput({text:`${this.ip_addr}`}).fontSize(28).width(280).backgroundColor(Color.Transparent).onChange((value:string)=>{this.ip_addr = value})}Row(){Text('端口:').fontSize(28).backgroundColor(Color.Green)TextInput({text:`${this.port}`}).fontSize(28).width(280).backgroundColor(Color.Transparent).onChange((value:string)=>{this.port = parseInt(value, 10); //字符转数字})}Row(){Text('发送:').fontSize(28)}.align(Alignment.Start)Row(){TextArea({text:`${this.send_msg}`}).fontSize(28).height(100).onChange((value:string)=>{this.send_msg = value})}Row(){Text('接收:').fontSize(28)}.align(Alignment.Start)Row(){TextArea({text:`${this.recv_msg}`}).fontSize(28) //文本自动换行.height(200)}Row(){Button('连接').width(100).fontSize(28).onClick(() => {// 绑定IP地址和端口。//连接服务器，必须首先绑定本机IPlet bindAddress = {address: this.local_ip,port: this.local_port, // 绑定端口，如1234family: 1};tcp.bind(bindAddress, err => {if (err) {console.log('bind fail_local');this.recv_msg = 'connect fail_local,IP:'+this.local_ipreturn;}console.log('bind success_local');this.recv_msg = 'connect fail_local,IP:'+this.local_ip})let connectAddress = {address: this.ip_addr,port: this.port, // 连接端口，如5678family: 1};tcp.connect({address: connectAddress, timeout: 3000},err=>{if (err) {console.log('connect fail_remote');this.recv_msg = 'connect fail_remote,IP:'+this.ip_addrreturn;}console.log('connect success');this.recv_msg = 'connect success_remote,IP:'+this.ip_addr})})Button('______').onClick((event: ClickEvent) => {})Button('发送').width(100).fontSize(28).onClick((event: ClickEvent) => {tcp.send({data: this.send_msg}, err => {if (err) {console.log('send fail');this.recv_msg='send fail_remote'return;}console.log('send success');this.recv_msg='send success_remote';})})}Row(){Button('退出').width(100).fontSize(28).onClick((event: ClickEvent) => {tcp.close();const context = getContext(this) as common.UIAbilityContext;context.terminateSelf();let applicationContext = context.getApplicationContext();// applicationContext.killProcessesBySelf().// then((data)=>// {console.log('The process running information is:'+ JSON.stringify(data));})//   .catch((error)=>{console.error('error:'+ JSON.stringify(error));})// process.kill(0, process.pid)// process.exit(0)})}}.width('100%').padding(20) //边距.backgroundColor(Color.Gray)}
}

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