node . js http 2 server request . traines 方法

原文:https://www . geesforgeks . org/node-js-http2 server request-trainers-method/

Http2ServerRequest .拖车是 http2 模块内 Http2ServerRequest 类的内置应用程序编程接口,用于获取请求/响应拖车对象。

语法:

const request.trailers

参数:该方法不接受任何参数作为参数。

返回值:该方法返回请求/响应拖车对象。

如何生成私钥和公钥证书?

1。文件名:私钥

打开记事本,复制粘贴以下密钥,将文件保存为 私钥. PEMT0】

2。文件名:公共证书

打开记事本,复制粘贴以下密钥,将文件保存为 公共证书T0】

示例 1: 文件名:index . js

Javascript

// Node.js program to demonstrate the
// Http2ServerRequest.trailers 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'),
};

// Request and response handler
const http2Handlers = (request, response) => {

  // Getting trailers of http2 
  // by using request.trailers method
  const auth = request.trailers;
  console.log( auth)
};

// Creating and initializing server
// by using http2.createServer() method
const server = http2.createServer(options, http2Handlers);

server.on('stream', (stream, requestheader) => {
  stream.respond({ 
    ':status': 200, 
    'content-type': 'text/plain' 
  });
  stream.write('hello ');

  // Getting all information of this http2stream object
  // by using state method
  const status = stream.state;

  stream.end("priority weight : " + status.weight);

  // 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('response', (responsesocket) => {
  console.log("status : " 
  + responsesocket[":status"]);
});

req.on('data', (data) => {
  console.log('Received: %s ',
  data.toString().replace(/(\n)/gm,""));
});

req.on('end', () => {
  client.close(() => {
    console.log("client destroyed");
  })
});

使用以下命令运行 index.js 文件:

node index.js

输出:

{}
status : 200
Received: hello
Received: priority weight : 16
client destroyed
server destroyed

示例 2: 文件名:index . js

Javascript

// Node.js program to demonstrate the
// Http2ServerRequest.trailers 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'),
};

// Request and response handler
const http2Handlers = (request, response) => {

  // Getting trailers of http2 
  // by using request.trailers method
  const auth = request.trailers;
  response.end( "request trailers := " + auth)
};

// Creating and initializing server
// by using http2.createServer() method
const server = http2.createServer(options,http2Handlers);

server.on('stream', (stream, requestHeaders) => {

  // Getting all information of this http2stream object
  // by using state method
  const status = stream.state;

  stream.end("The sum weight of all Http2Stream : " +
  status.sumDependencyWeight);

  // 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");
  })
});

使用以下命令运行 index.js 文件:

node index.js

输出:

Received: request trailers := [object Object]
client destroyed
server destroyed

参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/https 2 . html # https 2 _ request _ trainers