Node.js Http2ServerResponse.setHeader()用法及代码示例

Http2ServerResponse.setHeader()是http2模块内的Http2ServerResponse类的内置应用程序编程接口，用于设置标头名称和该数据标头的特定值。

用法:

response.setHeader(name, value)

参数：此方法将以下参数作为参数。

name:标头名称。
value:标头的值。

返回值：此方法无返回值。

如何产生一个 私钥和公共证书？

文件名：私钥

步骤-1：打开记事本，然后按copy-paste键，将文件另存为private-key.pem。

2：文件名：公开证书

打开记事本，然后按以下键打开copy-paste：将文件另存为public-cert.pem。

示例1：Filename：index.js

Javascript

// Node.js program to demonstrate the 
// Http2ServerResponse.setHeader() method 
// Importing the http2 module 
const http2 = require('http2'); 
  
// Importing the fs module 
const fs = require('fs'); 
  
// Private key and public certificate for access 
const options = { 
  
  // Reading the file private.key.pem file synchronously 
  key:fs.readFileSync('private-key.pem'), 
  
  // Reading the file public.cert.pem file synchronously 
  cert:fs.readFileSync('public-cert.pem'), 
}; 
  
// Request and response handler 
const http2Handlers = (request, response) => { 
  
  // Setting new header by using response.setHeader()  
  response.setHeader('Content-Type', 'hello world; charset=utf-8'); 
  
  // Getting header's object by using getHeaders() method 
  const value = response.getHeaders() 
  
  // Display the header 
  console.log(value); 
}; 
  
// Creating and Initializing server by  
// using http2.createServer() method 
const server = http2.createServer(options,http2Handlers); 
  
  
server.on('stream', (stream, requestheader) => { 
  stream.write('hello '); 
  
   // Getting all information of this http2stream 
   // object by using state api 
   const status = stream.state; 
  
   stream.end("priority weight:" + status.weight); 
  
   // Stopping the server by 
   // using the close() method 
   server.close(()=>{ 
     console.log("server destroyed"); 
  }) 
}); 
server.listen(8000); 
  
// Creating and initializing client  by  
// using tls.connect() method 
const client = http2.connect('http://localhost:8000'); 
  
// Handling the request  
const req = client.request({ ':method':'GET', ':path':'/'}); 
  
req.on('response', (responsesocket) => { 
  console.log("status:" + responsesocket[":status"]); 
}); 
  
req.on('data', (data) => { 
  
  console.log('Received:%s ', 
          data.toString().replace(/(\n)/gm,"")); 
}); 
  
req.on('end', () => { 
  client.close(()=>{ 
    console.log("client destroyed"); 
  }) 
    
});

使用以下命令运行index.js文件：

node index.js

输出：

{ 'content-type':'hello world; charset=utf-8' }
status:200
Received:hello
Received:priority weight:16
client destroyed
server destroyed

示例2：Filename：index.js

Javascript

// Node.js program to demonstrate the 
// Http2ServerResponse.setHeader() method 
// Importing http2 module 
const http2 = require('http2'); 
  
// Importing fs module 
const fs = require('fs'); 
  
// Private key and public certificate for acess 
const options = { 
  
  // Reading the private-key.pem file synchronously  
  key:fs.readFileSync('private-key.pem'), 
  
  // Reading the public-cert.pem file synchronously  
  cert:fs.readFileSync('public-cert.pem'), 
}; 
  
// Request and response handler 
const http2Handlers = (request, response) => { 
  
  // Setting new header 
  response.setHeader('Foo', 'bar'); 
  response.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']); 
  
  // Getting header's object 
  // by using getHeaders() method 
  const value = response.getHeaders() 
  
 // Display the header 
 console.log(value);  
}; 
  
// Creating and initializing server 
// by using http2.createServer() method 
const server = http2.createServer(options, http2Handlers); 
  
  
server.on('stream', (stream, requestHeaders) => { 
  
   // Getting all information of this http2stream object 
   // by using state api 
   const status = stream.state; 
  
   stream.end("The sum weight of all Http2Stream:" 
       + status.sumDependencyWeight); 
  
  // Stopping the server 
  // by using the close() method 
  server.close(()=>{ 
    console.log("server destroyed"); 
  }) 
}); 
server.listen(8000); 
  
  
// Creating and initializing client 
// by using tls.connect() method 
const client = http2.connect('http://localhost:8000'); 
  
const req = client.request({  
  ':method':'GET', ':path':'/www.geeksforgeeks.org' }); 
  
req.on('data', (data) => { 
  
  console.log('Received:%s ', 
          data.toString().replace(/(\n)/gm,"")); 
}); 
  
req.on('end', () => { 
  client.close(()=>{ 
    console.log("client destroyed"); 
  }) 
    
});

使用以下命令运行index.js文件：

node index.js

输出：

{ foo:'bar', 'set-cookie':[ 'foo=bar', 'bar=baz' ] }
Received:The sum weight of all Http2Stream:0
client destroyed
server destroyed

参考：https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_response_setheader_name_value

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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 Http2ServerResponse.setHeader() 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。