Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

Node.js 数据报 模块

❮ 内置模块


示例

创建一个文件(“demo_dgram.js”),监听 8080 端口上的消息

var dgram = require('dgram');
var s = dgram.createSocket('udp4');
s.on('message', function(msg, rinfo) {
  console.log('我收到了这条消息:' + msg.toString());
});
s.bind(8080);

记得初始化文件

C:\Users\你的用户名>node demo_dgram.js

示例

创建一个文件(“demo_dgram_send.js”),向 8080 端口发送消息

var dgram = require('dgram');
var s = dgram.createSocket('udp4');
s.send(Buffer.from('abc'), 8080, 'localhost');

记得初始化文件

C:\Users\你的用户名>node demo_dgram_send.js

结果

初始化第二个文件后,第一个命令窗口将显示如下

C:\Users\你的用户名>node demo_dgram.js
我收到了这条消息:abc

定义和用法

dgram 模块提供了一种使用数据报套接字的方法。

它可以用来在一台计算机/服务器与另一台计算机/服务器之间发送消息。


语法

在你的应用程序中包含 dgram 模块的语法

var dgram = require('dgram');

数据报方法

方法 描述
createSocket() 创建一个 Socket 对象

❮ 内置模块

×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.