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Copy pathecho-server.js
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72 lines (61 loc) · 1.73 KB
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// @ts-check
import http from 'http';
export async function createEchoServer(/** @type {number} */port) {
/** @type {import('http').Server} */
let server;
/** @type {import('http').RequestListener} */
function handleRequest(req, res) {
const parsedURL = new URL(req.url, `http://${req.headers.host}`);
const pathName = parsedURL.pathname;
if (pathName !== '/echo') {
res.statusCode = 500;
res.end('The URL path must be /echo');
return;
}
const {searchParams} = parsedURL;
const content = searchParams.get('content');
if (!content) {
res.statusCode = 500;
res.end('Send content like /echo?type=text%2Fplain&content=XYZ');
return;
}
const contentType = searchParams.get('type') || 'text/plain';
res.statusCode = 200;
res.setHeader('Content-Type', contentType);
res.end(content, 'utf8');
}
/**
* @returns {Promise<void>}
*/
function start() {
return new Promise((resolve) => {
server = http
.createServer(handleRequest)
.listen(port, () => resolve());
});
}
/**
* @returns {Promise<void>}
*/
function close() {
if (!server) {
return;
}
return new Promise((resolve) => {
server.close((err) => {
if (err) {
console.error(err);
}
server = null;
resolve();
});
});
}
process.on('exit', close);
process.on('SIGINT', close);
await start();
return {
close,
url: `http://localhost:${port}`,
};
}