Node.js Http2ServerRequest.aborted用法及代碼示例

Http2ServerRequest.aborted 是 http2 模塊中 Http2ServerRequest 類的內置應用程序編程接口，用於檢查特定服務器請求是否中止。

用法:

const request.aborted

參數：此方法不接受任何參數作為參數。

返回值：此方法不返回任何值。

如何生成私鑰和公鑰

私鑰：

步驟 - 1：打開記事本並複製粘貼以下鍵。

步驟 - 2：另存為private-key.pem

公開證書：

步驟 - 1：打開記事本並複製粘貼以下鍵。

步驟 - 2：另存為public-cert.pem

範例1： 文件名：index.js

Javascript


// Node.js program to demonstrate the
// request.aborted property
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 ');
 
   const http2session = stream.session;
 
   // Getting state associated with this
   // session by using state API
   const status = http2session.state;
 
   stream.end("local window size:"
      + status.localWindowSize);
 
 
  // Stopping the server by
  // using the close() method
  server.close(()=>{
    console.log("server localSettings");
  })
});
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('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 localSettings");
  })
 
  const status = req.aborted;
 
  if(status)
    console.log("request is aborted")
  else
    console.log("request is not aborted");
});

輸出：

status:200
Received:hello
Received:local window size:65535
request is not aborted
client localSettings
server localSettings

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
// http2session.state property
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;
 
   // Getting state associated with this
   // session by using state API
   const status = http2session.state;
 
   stream.end("numeric id of recent data:"
      + status.lastProcStreamID);
 
  // 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");
  })
 
  const status = req.aborted;
 
  if(status)
    console.log("request is aborted")
  else
    console.log("request is not aborted");
});

輸出：

Received:numeric id of recent data:1
request is not aborted
client destroyed
server destroyed

使用以下命令運行index.js文件：

節點index.js

參考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_request_aborted

相關用法

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 Http2ServerRequest.aborted Property。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。