HarmonyOS鸿蒙Next中TCPSocket通过ip端口号连接对端设备后，如何快速监听设备掉线？
HarmonyOS鸿蒙Next中TCPSocket通过ip端口号连接对端设备后，如何快速监听设备掉线？
let netAddress: socket.NetAddress = {
address: ip,
port: port
}
let tcpConnectOptions: socket.TCPConnectOptions = {
address: netAddress,
timeout: 2000
}
const tcpSocket = socket.constructTCPSocketInstance();
tcpSocket.connect(tcpConnectOptions).then(() => {
let tcpExtraOptions: socket.TCPExtraOptions = {
keepAlive: true,
OOBInline: true,
TCPNoDelay: true,
socketLinger: { on: true, linger: 10 } as SocketLinger,
receiveBufferSize: 1000,
sendBufferSize: 1000,
reuseAddress: true,
socketTimeout: 3000
}
tcp.setExtraOptions(tcpExtraOptions, (err: BusinessError) => {
if (err) {
console.log('setExtraOptions fail');
return;
}
console.log('setExtraOptions success');
});
})
更多关于HarmonyOS鸿蒙Next中TCPSocket通过ip端口号连接对端设备后，如何快速监听设备掉线？的实战教程也可以访问 https://www.itying.com/category-93-b0.html
2 回复
您好：
可同时使用如下两种方案解决问题。
1. 使用短连接的方式建立TCP连接。在每次发送数据时建立一次TCP连接，发送成功后及时断开连接。
2. 调用conncet接口时配置超时时间。
```typescript
import { socket } from '[@kit](/user/kit).NetworkKit';
import { BusinessError } from '[@kit](/user/kit).BasicServicesKit';
let tcp: socket.TCPSocket = socket.constructTCPSocketInstance();
let netAddress: socket.NetAddress = {
address: '192.168.xx.xxx',
port: 8080
}
let tcpconnectoptions: socket.TCPConnectOptions = {
address: netAddress,
timeout: 6000
}
tcp.connect(tcpconnectoptions, (err: BusinessError) => {
if (err) {
console.log('connect fail');
return;
}
console.log('connect success');
})
更多关于HarmonyOS鸿蒙Next中TCPSocket通过ip端口号连接对端设备后，如何快速监听设备掉线？的实战系列教程也可以访问 https://www.itying.com/category-93-b0.html
