Node.js Http2ServerResponse.write() 方法

Http2ServerResponse.write()是 http2 模块中类 Http2ServerResponse 的内置应用程序编程接口，用于将响应主体的块发送到客户端。

句法：

response.write([data[, encoding]][, callback])

参数：此方法接受以下参数作为参数。

data ：这是要发送的响应标头。
encoding ：它是编码的类型，它是一个可选参数。
callback : 进一步操作的回调函数，可选参数。

返回值：此方法没有任何返回值。

如何生成私钥和公共证书？

1. 文件名：私钥

打开记事本并复制粘贴以下密钥并将文件保存为private-key.pem

2. 文件名：公共证书

打开记事本并复制粘贴以下密钥并将文件另存为public-cert.pem

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the
// Http2ServerResponse.write() 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) => {
  
    // Sending the data to the client
    // by using response.write() method
    response.write("hi")
  
    // Sending the signal to client
    response.end("hello world")
};
  
// Creating and initializing server
// by using http2.createServer() method
const server = http2.createServer(options, http2Handlers);
  
server.on('stream', (stream, requestheader) => {
    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");
    })
});

Javascript

// Node.js program to demonstrate the
// Http2ServerResponse.write() 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) => {
      
    // Sending the data to the client
    // by using response.write() method
    response.write("GeeksForGeeks")
};
  
// 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': '/www.geeksforgeeks.org' });
  
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: hi
Received: hello world
client destroyed
server destroyed

示例 2：文件名：index.js

Javascript

// Node.js program to demonstrate the
// Http2ServerResponse.write() 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) => {
      
    // Sending the data to the client
    // by using response.write() method
    response.write("GeeksForGeeks")
};
  
// 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': '/www.geeksforgeeks.org' });
  
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: GeeksForGeeks
Received: The sum weight of all Http2Stream : 0
client destroyed
server destroyed

参考：

https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_response_write_chunk_encoding_callback