📜  Node.js http.ClientRequest.protocol 方法

📅  最后修改于: 2022-05-13 01:56:36.821000             🧑  作者: Mango

Node.js http.ClientRequest.protocol 方法

http.ClientRequest.protocol是HTTP模块中ClientRequest类的内置应用程序接口,用于获取客户端请求协议的对象。

句法:

const request.protocol

参数:此函数不接受任何参数作为参数。

返回值:该方法返回客户端请求协议的对象。

示例 1:文件名-index.js

Javascript
// Node.js program to demonstrate the 
// request.protocol 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);
 
  req.protocol = 'HTTP'
 
  // Getting protocol
  // by using protocol method
  const v = req.protocol;
 
  // Display the result
  console.log("protocol :- " + v)
 
  process.exit(0)
});


Javascript
// Node.js program to demonstrate the 
// request.protocol method
 
// Importing http module
const http = require('http');
 
// Create an HTTP server
http.createServer((req, res) => { })
  .listen(3000, '127.0.0.1', () => {
 
  // Getting client request
  const req = http.request({
    port: 3000,
    host: '127.0.0.1',
  });
 
  // Getting protocol
  // by using protocol method
  console.log("protocol :- " + req.protocol)
 
  process.exit(0)
});


使用以下命令运行index.js文件:

node index.js

输出:

protocol :- HTTP

示例 2:文件名-index.js

Javascript

// Node.js program to demonstrate the 
// request.protocol method
 
// Importing http module
const http = require('http');
 
// Create an HTTP server
http.createServer((req, res) => { })
  .listen(3000, '127.0.0.1', () => {
 
  // Getting client request
  const req = http.request({
    port: 3000,
    host: '127.0.0.1',
  });
 
  // Getting protocol
  // by using protocol method
  console.log("protocol :- " + req.protocol)
 
  process.exit(0)
});

使用以下命令运行index.js文件:

node index.js

输出:

protocol :- undefined

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