Node.js 客户端http2session.request() 方法

clienthttp2session.request()是http2 模块中ClientHttp2Session 类的内置应用程序编程接口，用于返回ClientHttp2Stream 的对象。

句法：

const clienthttp2session.request(headers[, options])

参数：此方法将以下参数作为参数。

标头：标头对象。
options:它接受任何参数 {endStream, Exclusive, parent, weight, waitForTrailers}

返回值：该方法返回ClientHttp2Stream的对象。

如何生成私钥和公共证书？

私钥：

步骤 - 1：打开记事本并复制并粘贴以下密钥。

第 2 步：另存为private-key.pem

公共证书

步骤 - 1：打开记事本并复制并粘贴以下密钥

第 2 步：另存为public-cert.pem

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the
// clienthttp2session.request() 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('session', (session) => {
 
  // Set origin frame
  session.origin('http://localhost:8000');
  console.log("ORIGIN frame is submitted")
});
 
 
server.on('stream', (stream, requestHeaders) => {
 
  // Setting response header to client
  // by using respond() method
  stream.respond({
    ':status': 200,
    'content-type': 'text/plain'
  });
   
  stream.write('hello ');
 
   // Checking if header is sent or not
   // by using pushAllowed method
   const status = stream.pushAllowed;
 
   if(status)
     stream.end("push stream is accepted");
   else
     stream.end("push stream is not accepted");
 
  // 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');
 
 
// Getting object of ClientHttp2Stream
// by using request() method
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");
  })
});

Javascript

// Node.js program to demonstrate the
// clienthttp2session.request() 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) => {
 
  // Setting response header to client
  // by using respond() method
  stream.respond({
    ':status': 200,
    'content-type': 'text/plain'
  });
   
  stream.write('hello ');
 
  const session = stream.session;
 
  // Set origin frame
  session.origin('http://localhost:8000');
  stream.end("ORIGIN frame is submitted")
 
  // Stoping 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');
 
// Getting object of ClientHttp2Stream
// by using request() method
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");
  })
});

输出：

ORIGIN frame is submitted
status : 200
Received: hello
Received: push stream is accepted
client destroyed
server destroyed

使用以下命令运行index.js文件：

node index.js

示例 2：文件名：index.js

Javascript

// Node.js program to demonstrate the
// clienthttp2session.request() 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) => {
 
  // Setting response header to client
  // by using respond() method
  stream.respond({
    ':status': 200,
    'content-type': 'text/plain'
  });
   
  stream.write('hello ');
 
  const session = stream.session;
 
  // Set origin frame
  session.origin('http://localhost:8000');
  stream.end("ORIGIN frame is submitted")
 
  // Stoping 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');
 
// Getting object of ClientHttp2Stream
// by using request() method
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");
  })
});

输出：

status : 200
Received: hello
Received: ORIGIN frame is submitted
client destroyed
server destroyed

使用以下命令运行 index.js 文件：

node index.js

参考：https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_clienthttp2session_request_headers_options