Node.js Http2Stream 头事件
原文:https://www . geesforgeks . org/node-js-http2 stream-headers-event/
当接收到一个流的附加头块时，http2 服务器中的“头”事件被发出。
语法:
Event: 'headers'
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
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 pem
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
示例 1: 文件名:index . js
Javascript
// Node.js program to demonstrate the
// Http2Stream header 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) => {
// Setting additional header
// by using additionalHeaders() method
stream.additionalHeaders({
':status': 100,
'content-type': 'text/plain'
});
stream.end("the end");
// 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:
[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
// Http2Stream header 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) => {
// 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)
// 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'
}
]
[Object: null prototype] {
':status': 100,
'content-type': 'text/plain'
}
参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/https 2 . html # https 2 _ event _ headers
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