http module

. 1  const HTTP = the require ( ' HTTP ' );
 2  
. 3 the let Server http.createServer = ((REQ, RES) => {
 . 4      res.end ( ' Hello, World! ' );
 . 5  });
 . 6  
. 7 server.listen ( 3000 , ' 127.0.0.1 ' , () => {
 . 8      the console.log ( ' server has started! ' );
 9      // off after 5 seconds the server 
10      the setTimeout (() => {
 . 11          // server.close ( ); 
12     }, 5000 );
 13  });
 14  
15  // Close monitor server 
16 server.on ( ' Close ' , () => {
 . 17      the console.log ( ' server is off! ' );
 18  });
 . 19  
20 is  // monitor server error has occurred 
21 is server.on ( ' error ' , (E) => {
 22 is      IF (e.code === ' EADDRINUSE ' ) {
 23 is          the console.log ( ' port number to be called! ' );
 24     } The else {
 25          the console.log ( ' other errors ' , e.code);
 26 is      }
 27  });
 28  
29  // set the timeout 
30 server.setTimeout ( 1000 , () => {
 31 is      the console.log ( ' set the timeout time lS ' );
 32  });
 33 is  
34 is server.on ( ' timeout ' , () => {
 35      // timeout what to do the operation 
36      the console.log ( ' connection has timed out ' );
 37 });

 1 let http = require('http');
 2 let fs = require('fs');
 3 let path = require('path');
 4 
 5 http.createServer((req, res)=>{
 6     console.log(path.join(__dirname, 'request.log'));
 7     console.log(req);
 8     // 输出request.log文件
 9     let out = fs.createWriteStream(path.join(__dirname, 'request.log'));
10     out.write('1) method:' + req.method + '\n');
11     out.write('2) url:' + req.url + '\n');
12     out.write('3) headers:' + JSON.stringify(req.headers) + '\n');
13     out.write('4) httpVersion:' + req.httpVersion + '\n');
14 }).listen(8080, '127.0.0.1');

1 1) method:GET
2 2) url:/
3 3) headers:{"host":"localhost:8080","connection":"keep-alive","cache-control":"max-age=0",
　　　　"upgrade-insecure-requests":"1","user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) 
　　　　Chrome/75.0.3770.100 Safari/537.36","accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;
　　　　q=0.8,application/signed-exchange;v=b3","accept-encoding":"gzip, deflate, br","accept-language":"zh-CN,zh;q=0.9,en;q=0.8,lb;
　　　　q=0.7","cookie":"_nano_fp=XpdYn5CjX0UJnpTJXC_ALVUQMlgQwrkHd5Az6sJb"}
4 4) httpVersion:1.1

1  // embodiment 1 
2  
. 3 const = the require URL ( 'URL' );
 . 4  // string converted into a URL object 
. 5 const = myURL is url.parse ( 'HTTPS: // User: [email protected]: 8080 / P / A / T / H = Query String the hash # '? );
 . 6  the console.log (myURL is);
 . 7  
. 8  
. 9 const = myURL is new new the URL (' HTTPS: // User: [email protected]: 8080 / P / A / T / H = Query String the hash # '? );
 10 the console.log (myURL is);

 1 URL {
 2   href:
 3    'https://user:[email protected]:8080/p/a/t/h?query=string#hash',
 4   origin: 'https://sub.itlike.com:8080',
 5   protocol: 'https:',
 6   username: 'user',
 7   password: 'pass',
 8   host: 'sub.itlike.com:8080',
 9   hostname: 'sub.itlike.com',
10   port: '8080',
11   pathname: '/p/a/t/h',
12   search: '?query=string',
13   searchParams: URLSearchParams { 'query' => 'string' },
14   hash: '#hash' 
15 }

. 1 const = the require HTTP ( "HTTP" );
 2  
. 3 http.createServer ((REQ, RES) => {
 . 4       the console.log (res.headersSent 'response header has been sent':? 'Response header is not transmitted' );
 5       // set the implicit response header 
. 6       res.setHeader ( 'the Content-the type', 'text / HTML; charset = UTF-. 8' );
 . 7       res.writeHead (200 is, 'OK' );
 . 8       res.write ( '< h1 of> the Hello, ItLike </ h1 of> ' );
 . 9       res.write (' <h1 of> the Hello, ItLike </ h1 of> ' );
 10       res.write (' <h1 of> the Hello, ItLike </ h1 of> ' );
 . 11       res.write ( '<h1>Hello, ItLike</h1>');
12      //The response to the end 
13 is       res.end ( 'lift up INSTITUTE Division </ h1 of> <h1 of>' );
 14       the console.log (res.headersSent 'response header has been sent':? 'Response header is not transmitted' );
 15 }) .listen (3000, '127.0.0.1', () => {
 16      the console.log ( 'server is started ~' )
 17 });