Node.js http2stream.sentInfoHeaders用法及代碼示例

http2stream.sentInfoHeaders是http2模塊內的Http2Stream類的內置應用程序編程接口，用於獲取包含發送到此Http2Stream的出站信息(附加)標頭的對象。

用法:

http2stream.sentInfoHeaders

參數：此方法不接受任何參數。

返回值：此方法返回一個對象，該對象包含發送到此Http2Stream的出站信息(附加)標頭。

如何生成私鑰和公共證書？

私鑰：打開記事本並複製粘貼以下 key ，如下所示：

現在將文件另存為private-key.pem

公開證書：打開記事本並複製粘貼以下 key ：

現在將另存為public-cert.pem

示例1：Filename：index.js

// Node.js program to demonstrate the 
// Http2Stream.sentInfoHeaders method 
  
const http2 = require('http2'); 
const fs = require('fs'); 
  
// Private key and public certificate for access 
const options = { 
  key:fs.readFileSync('private-key.pem'), 
  cert:fs.readFileSync('public-cert.pem'), 
}; 
  
// Creating and initializing server 
// by using http2.createServer() method 
const server = http2.createServer(options); 
  
server.on('stream', (stream, requestHeaders) => { 
  
   stream.additionalHeaders({  
      ':status':100,  
      'content-type':'text/plain' 
   }); 
  
   // Getting rst stream code 
   // by using sentInfoHeaders api 
   const status = stream.sentInfoHeaders; 
  
   console.log(status) 
  
   stream.end("the end"); 
    
   // 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':'/' 
}); 
  
req.on('data', (data) => { 
  console.log('Received:%s ', 
  data.toString().replace(/(\n)/gm, "")); 
}); 
  
req.on('end', () => { 
  client.close(() => { 
    console.log("client destroyed"); 
  }) 
});

使用以下命令運行index.js文件：

node index.js

輸出：

[
  [Object:null prototype] {
    ':status':100,
    'content-type':'text/plain'
  }
]
Received:the end 
client destroyed
server destroyed

範例2： 文件名：index.js

// Node.js program to demonstrate the 
// Http2Stream.sentInfoHeaders method 
  
const http2 = require('http2'); 
const fs = require('fs'); 
  
// Private key and public certificate for access 
const options = { 
   key:fs.readFileSync('private-key.pem'), 
   cert:fs.readFileSync('public-cert.pem'), 
}; 
  
// Creating and initializing server 
// by using http2.createServer() method 
const server = http2.createServer(options); 
  
server.on('stream', (stream, requestHeaders) => { 
  
    // Getting rst stream code 
    // by using sentInfoHeaders api 
    const status = stream.sentInfoHeaders; 
  
    stream.end("header object:" + status); 
  
    // Stopping the server 
    // by using the close() method 
    server.close(() => { 
       console.log("server destroyed"); 
    }) 
}); 
  
server.listen(8000); 
  
// Creating and intializing client 
// by using tls.connect() method 
const client = http2 
    .connect('http:// localhost:8000'); 
  
const req = client.request({  
    ':method' :'GET', ':path' :'/' 
}); 
  
req.on('data', (data) => { 
    console.log('Received:%s ', 
    data.toString().replace(/ (\n) / gm, "")); 
}); 
  
req.on('end', () => { 
  client.close(() => { 
     console.log("client destroyed"); 
  }) 
});

使用以下命令運行index.js文件：

node index.js

輸出：

Received:header object:undefined
client destroyed
server destroyed

參考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2stream_additionalheaders_headers

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Node.js http2stream.sentInfoHeaders Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。