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Node.js http2session.destroy() Method

  • Last Updated : 15 Oct, 2020

The http2session.destroy() is an inbuilt application programming interface of class http2session within http2 module which is used to destroy this particular session.

Syntax:

const http2session.destroy([error][, code])

Parameters: This method takes the following two optional arguments as a parameter:

  • error: It is an Error object if the Http2Session is being destroyed due to an error.
  • code: It is an HTTP/2 error code otherwise NO_ERROR code.

Return Value: This method has nothing to return.

How to generate private key and public certificate?



  1. Private key: Open notepad and copy paste the following key as shown below:
    -----BEGIN RSA PRIVATE KEY-----
    MIICXQIBAAKBgQC38R9wXcUbhOd44FavgmE5R3K4JeYOHLnI7dUq1B8/Gv7l3SOg
    JKef/m9gM1KvUx951mapXGtcWgwB08J3vUE2YOZ4tWJArrVZES0BI/RmFAyhQFP5
    HcWl3LSM9LRihP98F33oIkKaCxA5LxOrkgpV4HrUzIKTABDYah7RPex1WQIDAQAB
    AoGBAIXR71xxa9gUfc5L7+TqBs+EMmrUb6Vusp8CoGXzQvRHMJCMrMFySV0131Nu
    o0YYRDsAh1nJefYLMNcXd1BjqI+qY8IeRsxaY+9CB2KKGVVDO2uLdurdC2ZdlWXT
    Vwr3dDoyR0trnXJMmH2ijTeO6bush8HuXxvxJBjvEllM5QYxAkEA3jwny9JP+RFu
    0rkqPBe/wi5pXpPl7PUtdNAGrh6S5958wUoR4f9bvwmTBv1nQzExKWu4EIp+7vjJ
    fBeRZhnBvQJBANPjjge8418PS9zAFyKlITq6cxmM4gOWeveQZwXVNvav0NH+OKdQ
    sZnnDiG26JWmnD/B8Audu97LcxjxcWI8Jc0CQEYA5PhLU229lA9EzI0JXhoozIBC
    TlcKFDuLm88VSmlHqDyqvF9YNOpEdc/p2rFLuZS2ndB4D+vu6mjwc5iZ3HECQCxy
    GBHRclQ3Ti9w76lpv+2kvI4IekRMZWDWnnWfwta+DGxwCgw2pfpleBZkWqdBepb5
    JFQbcxQJ0wvRYXo8qaUCQQCgTvWswBj6OTP7LTvBlU1teAN2Lnrk/N5AYHZIXW6m
    nUG9lYvH7DztWDTioXMrruPF7bdXfZOVJD8t0I4OUzvC
    -----END RSA PRIVATE KEY-----
    

    Now save the file as private-key.pem

  2. Public certificate: Open notepad and copy paste the following key:
    -----BEGIN CERTIFICATE-----
    MIICfzCCAegCCQDxxeXw914Y2DANBgkqhkiG9w0BAQsFADCBgzELMAkGA1UEBhMC
    SU4xEzARBgNVBAgMCldlc3RiZW5nYWwxEDAOBgNVBAcMB0tvbGthdGExFDASBgNV
    BAoMC1BhbmNvLCBJbmMuMRUwEwYDVQQDDAxSb2hpdCBQcmFzYWQxIDAeBgkqhkiG
    9w0BCQEWEXJvZm9mb2ZAZ21haWwuY29tMB4XDTIwMDkwOTA1NTExN1oXDTIwMTAw
    OTA1NTExN1owgYMxCzAJBgNVBAYTAklOMRMwEQYDVQQIDApXZXN0YmVuZ2FsMRAw
    DgYDVQQHDAdLb2xrYXRhMRQwEgYDVQQKDAtQYW5jbywgSW5jLjEVMBMGA1UEAwwM
    Um9oaXQgUHJhc2FkMSAwHgYJKoZIhvcNAQkBFhFyb2ZvZm9mQGdtYWlsLmNvbTCB
    nzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAt/EfcF3FG4TneOBWr4JhOUdyuCXm
    Dhy5yO3VKtQfPxr+5d0joCSnn/5vYDNSr1MfedZmqVxrXFoMAdPCd71BNmDmeLVi
    QK61WREtASP0ZhQMoUBT+R3Fpdy0jPS0YoT/fBd96CJCmgsQOS8Tq5IKVeB61MyC
    kwAQ2Goe0T3sdVkCAwEAATANBgkqhkiG9w0BAQsFAAOBgQATe6ixdAjoV7BSHgRX
    bXM2+IZLq8kq3s7ck0EZrRVhsivutcaZwDXRCCinB+OlPedbzXwNZGvVX0nwPYHG
    BfiXwdiuZeVJ88ni6Fm6RhoPtu2QF1UExfBvSXuMBgR+evp+e3QadNpGx6Ppl1aC
    hWF6W2H9+MAlU7yvtmCQQuZmfQ==
    -----END CERTIFICATE-----
    

    Now save the as public-cert.pem

Example 1: Filename: index.js




// Node.js program to demonstrate the
// http2session.destroy() 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.respond({ 
      ':status': 200, 
      'content-type': 'text/plain' 
   });
  
   stream.write('hello ');
  
   // Getting session object
   // by using session method
   const http2session = stream.session;
  
   // Getting alpnProtocol of this session
   // by using alpnProtocol method
   const alpnProtocol = http2session.alpnProtocol;
  
   stream.end("session protocol : " + alpnProtocol);
  
   // If any error occure
   http2session.on('error', (code) => {
     console.log(code);
   })
  
   // Callback for close event
   http2session.on('close', () => {
     console.log("session is destoryed");
   })
  
   // Stopping the server
   // by using the close() method
   server.close(() => {
      console.log("server destroyed");
      http2session.destroy();
  })
});
  
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('response', (responseHeaders) => {
  console.log("status : " 
    + responseHeaders[":status"]);
});
  
req.on('data', (data) => {
  console.log('Received: %s ',
  data.toString().replace(/(\n)/gm, ""));
});
  
req.on('end', () => {
  client.close(() => {
    console.log("client destroyed");
  })
});

Run the index.js file using the following command:

node index.js

Output:

status : 200
Received: hello
Received: session protocol : h2c
client destroyed
server destroyed
session is destoryed

Example 2: Filename: index.js




// Node.js program to demonstrate the
// http2session.destroy() 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 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;
  
   // Destroying session 
   // by using destroy() method
   http2session.destroy();
  
   console.log("session is closed");
  
   // 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");
  })
});

Run the index.js file using the following command:

node index.js

Output:

session is closed
server destroyed

Reference: https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2session_destroy_error_code




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