HTTP server

import { createServer } from "node:http";

const server = createServer((sorov, javob) => {
    javob.writeHead(200, { "Content-Type": "text/plain; charset=utf-8" });
    javob.end("Salom, dunyo!");
});

server.listen(0);

const port = server.address().port;
const natija = await fetch(`http://localhost:${port}/`);

console.log("Holat:", natija.status);
console.log("Tana:", await natija.text());

server.close();

import { createServer } from "node:http";

const server = createServer((sorov, javob) => {
    const url = new URL(sorov.url, `http://${sorov.headers.host}`);

    javob.writeHead(200, { "Content-Type": "application/json" });
    javob.end(JSON.stringify({
        usul: sorov.method,
        yol: url.pathname,
        qidiruv: url.searchParams.get("q"),
        versiya: sorov.httpVersion,
    }));
});

server.listen(0);
const port = server.address().port;

const javob = await fetch(`http://localhost:${port}/qidir?q=node`);
console.log(await javob.json());

server.close();

import { createServer } from "node:http";

const server = createServer((sorov, javob) => {
    const { pathname } = new URL(sorov.url, "http://localhost");

    if (sorov.method === "GET" && pathname === "/") {
        javob.writeHead(200, { "Content-Type": "text/plain" });
        javob.end("bosh sahifa");
        return;
    }

    if (sorov.method === "GET" && pathname === "/salom") {
        javob.writeHead(200, { "Content-Type": "application/json" });
        javob.end(JSON.stringify({ xabar: "salom" }));
        return;
    }

    javob.writeHead(404, { "Content-Type": "text/plain" });
    javob.end("topilmadi");
});

server.listen(0);
const port = server.address().port;
const asos = `http://localhost:${port}`;

for (const yol of ["/", "/salom", "/yoq"]) {
    const j = await fetch(asos + yol);
    console.log(j.status, await j.text());
}

server.close();

import { createServer } from "node:http";

const server = createServer(async (sorov, javob) => {
    if (sorov.method !== "POST") {
        javob.writeHead(405).end();
        return;
    }

    const bolaklar = [];
    for await (const bolak of sorov) {
        bolaklar.push(bolak);
    }
    const tana = Buffer.concat(bolaklar).toString("utf8");

    const malumot = JSON.parse(tana);

    javob.writeHead(201, { "Content-Type": "application/json" });
    javob.end(JSON.stringify({ qabul: malumot.ism, uzunlik: tana.length }));
});

server.listen(0);
const port = server.address().port;

const javob = await fetch(`http://localhost:${port}/`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ ism: "Malika" }),
});

console.log(javob.status);
console.log(await javob.json());

server.close();

import { createServer } from "node:http";
import { STATUS_CODES } from "node:http";

const server = createServer((sorov, javob) => {
    const kod = Number(new URL(sorov.url, "http://x").searchParams.get("k"));
    javob.writeHead(kod, { "Content-Type": "text/plain" });
    javob.end(STATUS_CODES[kod] ?? "noma'lum");
});

server.listen(0);
const port = server.address().port;

for (const kod of [200, 201, 400, 404, 500]) {
    const j = await fetch(`http://localhost:${port}/?k=${kod}`);
    console.log(j.status, await j.text());
}

server.close();

import { createServer } from "node:http";
import { createReadStream } from "node:fs";
import { writeFile, rm } from "node:fs/promises";
import { pipeline } from "node:stream/promises";

await writeFile("sahifa.html", "<h1>Salom</h1>", "utf8");

const server = createServer(async (sorov, javob) => {
    javob.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
    await pipeline(createReadStream("sahifa.html"), javob);
});

server.listen(0);
const port = server.address().port;

const j = await fetch(`http://localhost:${port}/`);
console.log(j.headers.get("content-type"));
console.log(await j.text());

server.close();
await rm("sahifa.html");

import { createServer } from "node:http";

const server = createServer((sorov, javob) => {
    try {
        if (sorov.url === "/buzuq") {
            throw new Error("ichki nosozlik");
        }
        javob.writeHead(200).end("yaxshi");
    } catch (xato) {
        javob.writeHead(500, { "Content-Type": "application/json" });
        javob.end(JSON.stringify({ xato: "server xatosi" }));
    }
});

server.on("error", (xato) => console.log("server xatosi:", xato.message));

server.listen(0);
const port = server.address().port;

console.log((await fetch(`http://localhost:${port}/`)).status);

const yomon = await fetch(`http://localhost:${port}/buzuq`);
console.log(yomon.status, await yomon.json());

server.close();