node . js http2 server response . write head()方法
原文:https://www . geesforgeks . org/node-js-http2 server response-write head-method/
Http2ServerResponse . write head()是 http2 模块内的类 http2 server response 的内置应用程序编程接口，用于向请求发送响应头。
语法:
response.writeHead(statusCode[, statusMessage][, headers])
参数:该方法接受以下参数作为参数。
- status code: is a three-digit HTTP status code.
- Status message: is a human-readable status message. This is an optional parameter.
- Header: This is the response header passed as a parameter. This is an optional parameter.
返回值:这个方法没有什么可返回的。
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:Filename:index . js
Javascript
// Node.js program to demonstrate the
// Http2ServerResponse.writeHead() 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.writeHead() method
response.writeHead(200, {
'Content-Length': Buffer.byteLength('hello world'),
'Content-Type': 'text/plain; charset=utf-8'
});
// Sending the signal to the 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(responsesocket);
});
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:
[Object: null prototype] {
':status': 200,
'content-length': '11',
'content-type': 'text/plain; charset=utf-8',
date: 'Sun, 06 Dec 2020 14:12:00 GMT'
}
Received: hello world
client destroyed
server destroyed
示例 2:Filename:index . js
Javascript
// Node.js program to demonstrate the
// Http2ServerResponse.writeHead() 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.writeHead() method
response.writeHead(200, {
'Content-Length': Buffer.byteLength('hello world'),
'Content-Type': 'text/plain; charset=utf-8'
});
// 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) => {
// 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(responsesocket);
});
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:
[Object: null prototype] {
':status': 200,
'content-length': '11',
'content-type': 'text/plain; charset=utf-8',
date: 'Sun, 06 Dec 2020 14:39:31 GMT'
}
参考:
版权属于：月萌API www.moonapi.com，转载请注明出处
