Node.js Http2ServerResponse.sendDate 方法

Http2ServerResponse.sendDate是 http2 模块中类 Http2ServerResponse 的内置应用程序编程接口，用于检查 Date 头是否自动生成并在响应中发送。

句法：

response.sendDate

参数：此方法不接受任何参数作为参数。

返回值：当且仅当 Date 标头是否自动生成并在响应中发送时，此方法才返回 true。

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

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

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

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

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the
// Http2ServerResponse.sendDate 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) => {
 
    // Checking if the data header is sent or not
    const value = response.sendDate
 
    if (value)
        console.log("data header is sent")
    else
        console.log("data header is not sent")
};
 
// 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");
    })
});

使用以下命令运行index.js文件：

node index.js

输出：

data header is sent
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
// Http2ServerResponse.sendDate 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) => {
 
    // Checking if the data header is sent or not
    const value = response.sendDate
 
    if (value)
        response.end("data header is sent")
    else
        response.end("data header is not sent")
};
 
// 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: data header is sent
client destroyed
server destroyed

参考：https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_response_senddate