Node.js http2session.type用法及代碼示例

http2session.type是http2模塊內的類http2session的內置應用程序編程接口，用於返回對等進程中使用的會話實例的類型。

用法:

const http2session.type

參數：此方法不使用任何參數作為參數。

返回值：此方法返回對等進程中使用的會話實例的類型。

如何生成私鑰和公共證書？

私鑰：打開記事本並複製粘貼以下 key ：

現在將文件另存為private-key.pem

公開證書：打開記事本並複製粘貼以下 key ：

現在將文件另存為public-cert.pem

範例1： 文件名：index.js

// Node.js program to demonstrate the 
// http2session.type 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) => { 
    stream.respond({ 
        ':status':200, 
        'content-type':'text/plain'
    }); 
    stream.write('hello '); 
  
    const http2session = stream.session; 
  
    // Getting type of the particular session 
    // by using type method 
    const status = http2session.type; 
  
    if (status) 
        stream.end("This session is of "
            + "NGHTTP2_SESSION_CLIENT type"); 
    else
        stream.end("This session is of "
            + "NGHTTP2_SESSION_SERVER type"); 
  
    // Stopping the server by 
    // using the close() method 
    server.close(() => { 
        console.log("server localSettings"); 
    }) 
}); 
  
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', (responseHeaders) => { 
    console.log("status:" 
        + responseHeaders[":status"]); 
}); 
  
req.on('data', (data) => { 
    console.log('Received:%s ', 
        data.toString().replace(/(\n)/gm, "")); 
}); 
  
req.on('end', () => { 
    client.close(() => { 
        console.log("client localSettings"); 
    }) 
});

使用以下命令運行index.js文件：

node index.js

輸出：

status:200
Received:hello
Received:This session is of NGHTTP2_SESSION_SERVER type
client localSettings
server localSettings

範例2： 文件名：index.js

// Node.js program to demonstrate the 
// http2session.type 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) => { 
  
    // Getting session object 
    // by using session method 
    const http2session = stream.session; 
  
    // Getting state associated with this 
    // session by using state method 
    const status = http2session.state; 
  
    stream.end("numeric id of recent data:" 
            + status.lastProcStreamID); 
  
    // 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('data', (data) => { 
    console.log('Received:%s ', 
        data.toString().replace(/(\n)/gm, "")); 
}); 
  
req.on('end', () => { 
    client.close(() => { 
        console.log("client destroyed"); 
    }) 
}); 
  
const http2session = req.session; 
  
// Getting type aof the particular session 
// by using type method 
const status = http2session.type; 
  
if (status) 
    console.log("This session is of "
        + "NGHTTP2_SESSION_CLIENT type"); 
else
    console.log("This session is of "
        + "NGHTTP2_SESSION_SERVER type");

使用以下命令運行index.js文件：

node index.js

輸出：

This session is of NGHTTP2_SESSION_CLIENT type
Received:numeric id of recent data:1
client destroyed
server destroyed

參考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2session_type

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Node.js http2session.type Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。