Node.js http2session.setTimeout()用法及代碼示例

http2session.setTimeout()是http2模塊內的類http2session的內置應用程序編程接口，該接口用於設置持續時間，在該持續時間之後將執行特定操作。

用法:

const http2session.setTimeout(msecs, callback)

參數：此方法采用以下兩個參數，如下所示：

msecs:它是duration的整數值。
callback:這是作為參數傳遞的回調函數。

返回值：此方法僅返回超時後開始特定活動的回調函數。

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 ：

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 ：

現在將文件另存為public-cert.pem

範例1： 文件名：index.js

// Node.js program to demonstrate the 
// http2session.setTimeout() 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 session object 
  // by using session method 
  const http2session = stream.session; 
   
  // Haulting session for 3 secs 
  // by using setTimeout method 
  http2session.setTimeout(3000, () => { 
      console.log("Executed after 3 seconds"); 
  }) 
   
  // 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：

Executed after 3 seconds
server destroyed

範例2： 文件名：index.js

// Node.js program to demonstrate the 
// http2session.setTimeout() API 
  
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 intializing server 
// by using http2.createServer() method 
const server = http2.createServer(options); 
  
server.on('stream', (stream, requestHeaders) => { 
  
  // Getting session object 
  // by using session method 
  const http2session = stream.session; 
  
  // Gaulting session for 1 secs 
  // by using setTimeout method 
  http2session.setTimeout(1000, () => { 
     console.log("Response after 1 second"); 
  }) 
  
  // 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':'/' });

使用以下命令運行index.js文件：

node index.js

輸出：

Response after 1 second
server destroyed

參考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2session_settimeout_msecs_callback

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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 http2session.setTimeout() 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。