Node.js Http2ServerRequest 关闭事件
原文:https://www . geesforgeks . org/node-js-http2 server request-close-event/
当底层 Http2Stream 关闭时，会发出 http2 服务器中的“关闭”事件。
语法:
Event: 'close'
参数:此事件不接受任何参数作为参数。
返回值:这个事件只返回一个回调函数。
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: 文件名:index . js
Javascript
// Node.js program to demonstrate the
// Http2ServerRequest close event 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) => {
// Creating and initializing the http2 server request
const request = new http2.Http2ServerRequest(stream)
// Emitting close event
request.on('close' , () => {
console.log("request is closed")
})
// Setting additional header
// by using additionalHeaders() method
stream.additionalHeaders({ ':status': 100, 'content-type':
'text/plain' });
stream.end("the end");
// Closing the stream event
stream.close();
// 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': '/' });
// Emitting header event
req.on('headers', (headers, flags) => {
console.log(headers);
});
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:
request is closed
[Object: null prototype] {
':status': 100,
'content-type': 'text/plain'
}
Received: the end
client destroyed
server destroyed
示例 2: 文件名:index . js
Javascript
// Node.js program to demonstrate the
// Http2ServerRequest close event 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) => {
// Creating and initializing the http2 server request
const request = new http2.Http2ServerRequest(stream)
// Emitting close event
request.on('close' , ()=>{
console.log("request is closed")
})
// Setting additional header
// by using additionalHeaders() method
stream.additionalHeaders({
':status': 100,
'content-type': 'text/plain'
});
// Getting rst stream code
// by using sentInfoHeaders method
const status = stream.sentInfoHeaders;
console.log(status)
// Closing the stream event
stream.close();
// 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': '/' });
// Emitting header event
req.on('headers', (headers, flags) => {
console.log(headers);
client.close();
});
使用以下命令运行 index.js 文件:
node index.js
输出:
[
[Object: null prototype] {
':status': 100,
'content-type': 'text/plain'
}
]
request is closed
[Object: null prototype] {
':status': 100,
'content-type': 'text/plain'
}
server destroyed
参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/https 2 . html # https 2 _ event _ close _ 2
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