Node.js http2session.remoteSettings 方法

http2session.remoteSettings是 http2 模块中 http2session 类的内置应用程序编程接口，用于获取描述此 Http2Session 当前远程设置的无原型对象。

句法：

const http2session.remoteSettings

参数：此方法不接受任何参数。

返回值：此方法返回一个无原型对象，描述此 Http2Session 的当前远程设置。

如何生成私钥和公钥证书？

1. 私钥：打开记事本并复制粘贴以下密钥：
   

-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

1. 现在将文件保存为private-key.pem
2. 公共证书：打开记事本并复制粘贴以下密钥：
   

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

1. 现在将文件保存为public-cert.pem
   

示例 1：文件名：index.js

javascript

// Node.js program to demonstrate the
// http2session.remoteSettings 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 ');
 
  const http2session = stream.session;
 
  // Getting remote of this session
  // by using remoteSettings method
  const status = http2session.remoteSettings;
 
  stream.end("header table size : "
    + status.headerTableSize);
 
  // 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");
  })
});

使用以下命令运行 index.js 文件：

node index.js

输出：

status : 200
Received: hello
Received: header table size : 4096
client localSettings
server localSettings

示例 2：文件名：index.js

javascript

// Node.js program to demonstrate the
// http2session.remoteSettings 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) => {
 
  // Getting session object
  // by using session method
  const http2session = stream.session;
 
  // Getting remote of this session
  // by using remoteSettings method
  const status = http2session.remoteSettings;
 
  stream.end("max frame size : "
    + status.maxFrameSize);
 
  // 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: max frame size : 16384
client destroyed
server destroyed

参考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2session_remotesettings