#鸿蒙通关秘籍#如何在HarmonyOS NEXT中实现UDP通讯？

在HarmonyOS NEXT中，通过@ohos.net.socket模块创建并使用UDP通讯。以下是基本步骤：

1. 创建UDP Socket实例：

   import socket from '@ohos.net.socket';
   let udpSocket = socket.constructUDPSocketInstance();
   

2. 绑定本地IP地址和端口：

   let localAddress = { address: "0.0.0.0", port: 9990, family: 1 };
   udpSocket.bind(localAddress);
   

3. 发送消息：

   let targetAddress = { address: "目标IP", port: 9990, family: 1 };
   udpSocket.send({ data: "要发送的消息", address: targetAddress });
   

4. 接收消息并处理：

   udpSocket.on("message", (value) => {
      // Convert message from ArrayBuffer to string
      let message = buf2String(value.message);
      console.log("Received message: " + message);
   });
   
   function buf2String(buf) {
      let msgArray = new Uint8Array(buf);
      return new TextDecoder("utf-8").decode(msgArray);
   }