Node.js Http2Session timeout用法及代碼示例

如果在配置的毫秒數後Http2Session上沒有任何活動，則會發出http2服務器中的‘timeout’事件。

用法:

Event:'timeout'

參數：此事件不接受任何參數作為參數。

返回值：此事件僅返回回調函數。

如何生成私鑰和公共證書？

私鑰：

步驟 - 1：打開記事本，然後複製粘貼以下關鍵

步驟 - 2：另存為private-key.pem

公證書

步驟 - 1：打開記事本，然後複製粘貼以下關鍵

步驟 - 2：另存為public-cert.pem

範例1： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// timeout event 
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 api 
   const http2session = stream.session; 
  
   // Halting session for 3 secs 
   // by using setTimeout API 
   http2session.setTimeout(3000) 
  
   // Emitting timeout event 
   http2session.on('timeout',() =>{ 
    console.log("Surprise !!!"); 
   }) 
  
  // 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"); 
  }) 
    
});

輸出：

Surprise !!!
server destroyed

使用以下命令運行index.js文件：

node index.js

範例2： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// timeout event 
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 api 
   const http2session = stream.session; 
  
   // Hulting session for 3 secs 
   // by using setTimeout API 
   http2session.setTimeout(3000) 
  
    // Emitting timeout event 
    http2session.on('timeout',() =>{ 
      console.log("No one is responding"); 
     }) 
  
  // 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':'/' });

輸出：

server destroyed
session is closed
Received:session protocol:h2c

使用以下命令運行index.js文件：

node index.js

參考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_event_timeout

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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 timeout Event。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。