Node.js http.ClientRequest.connection用法及代码示例

http.ClientRequest.connection是HTTP模块中的ClientRequest类的内置应用程序编程接口，用于获取基础客户端请求套接字的引用。

用法:

const request.connection

参数：它不接受任何参数作为参数。

返回值：它不返回任何值。

范例1：Filename-index.js

Javascript

// Node.js program to demonstrate the   
// request.connection method 
  
// Importing http module 
const http = require('http'); 
  
// Create an HTTP server 
const server = http.createServer((req, res) => { 
    res.writeHead(200, { 'Content-Type':'text/plain' }); 
    res.end('okay'); 
}); 
  
// Now that server is running 
server.listen(3000, '127.0.0.1', () => { 
  
    // Make a request 
    const options = { 
        port:3000, 
        host:'127.0.0.1', 
        headers:{ 
            'Connection':'Upgrade', 
            'Upgrade':'websocket'
        } 
    }; 
  
    // Getting client request 
    const req = http.request(options); 
  
    // Getting request socket 
    // by using connection method 
    const v = req.connection; 
  
    // Display the result 
    console.log("request socket:- " + v) 
  
    process.exit(0) 
});

使用以下命令运行index.js文件：

node index.js

输出：

request socket:- null

示例2：Filename-index.js

Javascript

// Node.js program to demonstrate the   
// request.connection method 
  
// Importing http module 
const http = require('http'); 
  
// Create an HTTP server 
http.createServer((req, res) => { }) 
.listen(3000, '127.0.0.1', () => { 
  
    // Getting clinet request 
    const req = http.request({ 
        port:3000, 
        host:'127.0.0.1', 
    }); 
  
    // Getting request socket 
    // by using connection method 
    if (req.connection) { 
        console.log("Requested for Connection") 
    } else { 
        console.log("Not Requested for Connection") 
    } 
  
    process.exit(0) 
});

使用以下命令运行index.js文件：

node index.js

输出：

Not Requested for Connection

参考：https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_request_connection

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Node.js http.ClientRequest.connection Property。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。