/**
* Htttp server demo - demonstrates url, request and response handling
*/
var http = require('http');
var fs = require('fs');
var url = require('url');
var path = require('path');
const public = path.join(__dirname);
console.log(public);
const PORT = 8000;
const server = http.createServer((request, response) => {
// request is an http.IncomingMessage, which is a Readable Stream
// response is an http.ServerResponse, which is a Writable Stream
// Request url handling - parse to extract the required resource name ***
var pathname = url.parse(request.url).pathname;
console.log("\nRequest for " + pathname + " received.");
console.log(`Request method: ${request.method}`);
console.log(`Headers ${JSON.stringify(request.headers)}`);
if (request.method === 'GET') {
// Providing response - read the requested file content from file system
fs.readFile(path.join(public, pathname.substr(1)), function (err, data) {
if (err) {
console.log(err);
// 404: File not found
response.writeHead(404, { 'Content-Type': 'text/html' });
response.end(`
Error Status 404: Resource "${pathname}" does not exist.
`);
} else {
// 200 : OK - send file
response.writeHead(200, { 'Content-Type': 'text/html' });
// Write the content of the file to response body
response.write(data.toString());
}
// Send the response body
response.end();
});
} else if (request.method === 'POST') {
var body = [];
request.on('data', function (chunk) {
body.push(chunk);
}).on('end', function () {
body = Buffer.concat(body).toString();
// at this point, `body` has the entire request body stored in it as a string
console.log(body);
// Retun response - 201 : Created
response.writeHead(201, {
'content-type': 'text/html',
'location': `http://localhost:${PORT}/page1.html`
});
response.write(`page1.html`);
response.end();
});
}
})
// Start listening for reuests
server.listen(PORT, () => {
console.log(`Server running at http://localhost:${PORT}`);
});
// Server error handling
server.on('error', (e) => {
console.log(`Got error: ${e.message}`);
});