subject-two/entry/src/main/ets/common/utils/TcpClient.ts

import socket from '@ohos.net.socket';
import buffer from '@ohos.buffer';

const TAG = '[TcpDemo.TcpClient]'
import prompt from '@ohos.prompt'


export default class TcpClient {
    private localIp: string = ''
    private localIpPort: string = ''
    private oppositeIp: string = ''
    private oppositeIpPort: string = ''

    private tcp: any = null

    constructor(tcplocalIp: string, tcplocalIpPort:string,tcpOppositeIp: string,tcpOppositePort:string) {
        this.localIp = tcplocalIp
        this.oppositeIp = tcpOppositeIp
        this.localIpPort = tcplocalIpPort
        this.oppositeIpPort = tcpOppositePort

        this.tcp = socket.constructTCPSocketInstance();
    }
    rebindTcp(localIp: string, localIpPort:string,oppositeIp: string,oppositeIpPort:string){
        return new Promise((resolve, reject)=>{

            this.localIp = localIp
            this.oppositeIp = oppositeIp
            this.localIpPort = localIpPort
            this.oppositeIpPort = oppositeIpPort
            let promise=this.tcp.bind({ address:  this.localIp, port:parseInt(this.localIpPort), family: 1 }, err => {
                if (err) {
                    console.log('bind fail');
                    resolve(true)
                }
                resolve(false)

                console.log('bind success');
            })
        })

        // let promise = this.udp.bind({
        //     // address: '192.168.7.170', port: 20122, family: 1
        //     // address: '192.168.7.170', port: 31013, family: 1
        //     address: this.localIp, port: parseInt(this.localIpPort), family: 1
        // });

    }
    bindTcp() {
        return new Promise((resolve,reject)=>{
            let promise=this.tcp.bind({ address:  this.localIp, port:parseInt(this.localIpPort), family: 1 }, err => {
                if (err) {
                    console.log('bind fail');
                    resolve(true)
                }
                console.log('bind success');
                resolve(false)
            })
        })
        console.log('localIp',this.localIp)
        console.log('localIpPort',this.localIpPort)
        // let promise = this.udp.bind({
        //     // address: '192.168.7.170', port: 20122, family: 1
        //     // address: '192.168.7.170', port: 31013, family: 1
        //     address: this.localIp, port: parseInt(this.localIpPort), family: 1
        // });


    }
    connectTcp(){
        console.log('22323')
        return new Promise((resolve,reject)=>{
            let promise = this.tcp.connect({ address: {address: this.oppositeIp, port:  parseInt(this.oppositeIpPort), family: 1} , timeout: 6000});
            promise.then(() => {
                this.tcp.setExtraOptions({
                    keepAlive: true,
                    // OOBInline: true,
                    // TCPNoDelay: true,
                    // socketLinger: { on:true, linger:10 },
                    // receiveBufferSize: 1000,
                    // sendBufferSize: 1000,
                    // reuseAddress: true,
                    // socketTimeout: 3000,
                },err => {
                    if (err) {
                        console.log('setExtraOptions fail');
                        return;
                    }
                    console.log('setExtraOptions success');
                });
                console.log('connect success')
                resolve(true)
            }).catch(err => {
                console.log('connect fail');
                resolve(false)
            });
        })

    }

    sendMsg(msg: string) {console.log('oppositeIp',this.oppositeIp)
        return new Promise((reslove,reject)=>{
            let promise = this.tcp.send({
                data:msg
            });
            promise.then(() => {
                console.log('send success');
                reslove(true)
            }).catch(err => {
                console.log('send fail');
                reslove(false)
            });
        })

        console.log('oppositeIpPort',this.oppositeIpPort)
        // let promise = this.udp.send({
        //     data: msg,
        //     address: {
        //         // address: '192.168.7.124',
        //         // port: 30013,
        //         // address: '192.168.7.124',
        //         // port: 20022,
        //         address: this.oppositeIp,
        //         port: parseInt(this.oppositeIpPort),
        //         family: 1
        //     }
        // });

        // promise.then(() => {
        //     console.log(`${TAG} udp send success:${msg}`);
        // }).catch(err => {
        //     console.log(`${TAG} udp send fail:${JSON.stringify(err)}`);
        // });
    }

    onMessage(callback) {
        this.tcp.on('message', value => {
            // console.log('messageLengt',,value.message.length))

            // console.log("on message, message:" + value.message+ ", remoteInfo:" )
            if (value) {
                let dataView = new DataView(value.message)
                // const Arraybuffer=buffer.from(value.message, 5, dataView?.byteLength);
                const Arraybuffer=value.message.slice(5, dataView?.byteLength);

                callback(Arraybuffer)
            }else{
                callback('')
            }
            // callback(value.message)
        });
        // this.udp.on('message', value => {
        //     // 收到的是ArrayBuffer 需要进行转换解析
        //     if (value) {
        //         let dataView = new DataView(value.message)
        //         //            console.log(`${TAG} udp message length:${dataView?.byteLength}`);
        //         let str = ""
        //         for (let i = 0;i < dataView?.byteLength; ++i) {
        //             let c = String.fromCharCode(dataView?.getUint8(i))
        //             if (c !== "\n") {
        //                 str += c
        //             }
        //         }
        //         console.log(`${TAG} udp on message array buffer:${str}`);
        //         callback(str)
        //     }else{
        //         callback('')
        //     }
        //
        //
        // });
    }
    offTcp(callback) {
       this.tcp.off('message', callback);
    }
    closeTcp(callback) {
        return new Promise((reslove,reject)=>{
            let promise = this.tcp.close();
            promise.then(() => {
                console.log('close success');
                reslove(true)
            }).catch(err => {
                console.log('close fail');
                reslove(false)
            });
        })


    }
}