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Node.js http.IncomingMessage.httpVersion用法及代码示例


http.IncomingMessage.httpVersion是http模块内的Incoming Message类的内置应用程序编程接口,用于获取客户端发送的HTTP版本。最常用的版本是HTTP /1.1。

用法:

request.httpVersion

参数:此方法不接受任何参数作为参数。

返回值:此方法返回客户端发送的HTTP版本。

示例1:Filename:index.js



// Node.js program to demonstrate the   
// request.httpVersion Method  
  
// Importing http module  
var http = require('http'); 
  
// Setting up PORT  
const PORT = process.env.PORT || 3000; 
  
// Creating http Server  
var httpServer = http.createServer( 
    function (request, response) { 
  
    // Getting httpVersion by using 
    // request.httpVersion Api 
    const http_version = request.httpVersion; 
  
    // Display the result 
    response.end("Httpversion:" 
        + http_version, 'utf8', () => { 
          
        console.log("displaying the result..."); 
  
        // Closing the server 
        httpServer.close(() => { 
            console.log("server is closed") 
        }) 
    }); 
}); 
  
// Listening to http Server  
httpServer.listen(PORT, () => { 
    console.log("Server is running at port 3000..."); 
});

执行命令:

node index.js

控制台输出:

Server is running at port 3000...
displaying the result...
displaying the result...
server is closed
server is closed

浏览器输出:在浏览器的搜索栏中粘贴本地主机地址http://localhost:3000 /。

示例2:Filename:index.js

// Node.js program to demonstrate the   
// request.httpVersion Method  
  
// Importing http module  
var http = require('http'); 
  
// Request and response handler  
const http2Handlers = (request, response) => { 
  
    // Getting httpVersion by using 
    // request.httpVersion Api 
    const http_version = request.httpVersion; 
  
    // Display result 
    response.end("Httpversion:" 
        + http_version, 'utf8', () => { 
  
        console.log("displaying the result..."); 
  
        // Closing the server 
        httpServer.close(() => { 
            console.log("server is closed") 
        }) 
    }); 
}; 
  
// Creating http Server and listening 
// on given port number 
var httpServer = http.createServer( 
    http2Handlers).listen(3000, () => { 
    console.log("Server is running at port 3000..."); 
});

执行命令:

node index.js

控制台输出:

Server is running at port 3000...
displaying the result...
displaying the result...
server is closed
server is closed

浏览器输出:在浏览器的搜索栏中粘贴本地主机地址http://localhost:3000 /。

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




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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.IncomingMessage.httpVersion Method。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。