Node.js http2stream.respond()用法及代码示例

所述http2stream.respond()是类Http2Stream的内http2模块一个内置的应用程序编程接口，其用于发送的特定流的响应报头到其客户端。

用法:

const http2stream.respond([headers[, options]])

参数：该方法以响应头作为其参数。

返回值：此方法不返回任何值。

如何生成私钥和公钥

私钥

步骤 - 1：打开记事本，然后复制粘贴以下关键

步骤 - 2：另存为private-key.pem

公证书

步骤 - 1：打开记事本，然后复制粘贴以下关键

步骤 - 2：另存为public-cert.pem

范例1： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// Http2Stream.respond() method 
const http2 = require('http2'); 
const fs = require('fs'); 
  
// Private key and public certificate for acess 
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 reponse header to client  
    // by using respond() method 
    stream.respond({  
        ':status':200,  
        'content-type':'text/plain' 
    }); 
      
    stream.write('hello '); 
  
    // Checking if hader is sent or not 
    // by using pushAllowed method 
    const status = stream.pushAllowed; 
  
    if (status) 
        stream.end("push stream is accepted"); 
    else
        stream.end("push stream is not accepted"); 
  
    // Stoping 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', (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 destroyed"); 
    }) 
  
});

输出：

status:200
Received:hello
Received:header is sent
client destroyed
server destroyed

使用以下命令运行index.js文件：

node index.js

范例2： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// Http2Stream.respond() 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 reponse header to client  
    // by using respond() method 
    stream.respond({  
        ':status':200,  
        'content-type':'text/plain' 
    }); 
  
    // Stoping 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', (responseHeaders) => { 
  
    console.log("status:" 
        + responseHeaders[":status"]); 
});

输出：

status:200

使用以下命令运行index.js文件：

node index.js

参考： https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_http2stream_respond_headers_options

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Node.js http2stream.respond() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。