From 019518817974b90c47cb787a231f08aadf026f4f Mon Sep 17 00:00:00 2001
From: Olga Berezhna <57196165+oberezhnay@users.noreply.github.com>
Date: Tue, 6 Jan 2026 21:35:22 +0200
Subject: [PATCH 1/4] Solution
---
src/createServer.js | 127 +++++++++++++++++++++++++++++++++++++++++++-
src/index.html | 24 +++++++++
2 files changed, 149 insertions(+), 2 deletions(-)
create mode 100644 src/index.html
diff --git a/src/createServer.js b/src/createServer.js
index 1cf1dda..7c8c7ac 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -1,8 +1,131 @@
'use strict';
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+const { pipeline, Readable } = require('stream');
+const zlib = require('zlib');
+
+const COMPRESSION_TYPES = ['gzip', 'deflate', 'br'];
+
+function sendStatus(res, code) {
+ if (!res.headersSent) {
+ res.writeHead(code);
+ res.end();
+ }
+}
+
function createServer() {
- /* Write your code here */
- // Return instance of http.Server class
+ return http.createServer((req, res) => {
+ const { url, method, headers } = req;
+
+ if (url === '/' && method === 'GET') {
+ const htmlPath = path.join(__dirname, 'index.html');
+ const readStream = fs.createReadStream(htmlPath, 'utf-8');
+
+ res.writeHead(200, { 'Content-Type': 'text/html' });
+
+ pipeline(readStream, res, (err) => {
+ if (err) {
+ sendStatus(res, 500);
+ }
+ });
+
+ return;
+ }
+
+ if (method === 'GET' && url === '/compress') {
+ sendStatus(res, 400);
+
+ return;
+ }
+
+ if (method === 'POST' && url === '/compress') {
+ const contentType = headers['content-type'];
+
+ if (!contentType || !contentType.includes('multipart/form-data')) {
+ res.statusCode = 400;
+
+ return;
+ }
+
+ const boundary = '--' + contentType.split('boundary=')[1];
+
+ let body = Buffer.alloc(0);
+
+ req.on('data', (chunk) => {
+ body = Buffer.concat([body, chunk]);
+ });
+
+ req.on('end', () => {
+ const parts = body.toString('binary').split(boundary);
+
+ let fileBuffer;
+ let fileName;
+ let compressionType;
+
+ for (const part of parts) {
+ if (part.includes('name="compressionType"')) {
+ compressionType = part.split('\r\n\r\n')[1]?.trim();
+ }
+
+ if (part.includes('name="file"')) {
+ const match = part.match(/filename="(.+?)"/);
+
+ if (match) {
+ fileName = match[1];
+
+ const fileContent = part.split('\r\n\r\n')[1];
+
+ fileBuffer = Buffer.from(
+ fileContent.slice(0, fileContent.lastIndexOf('\r\n')),
+ 'binary',
+ );
+ }
+ }
+ }
+
+ if (!fileBuffer || !fileName || !compressionType) {
+ return sendStatus(res, 400);
+ }
+
+ if (!COMPRESSION_TYPES.includes(compressionType)) {
+ return sendStatus(res, 400);
+ }
+
+ let compressor;
+ let extension;
+
+ if (compressionType === 'gzip') {
+ compressor = zlib.createGzip();
+ extension = '.gzip';
+ }
+
+ if (compressionType === 'deflate') {
+ compressor = zlib.createDeflate();
+ extension = '.deflate';
+ }
+
+ if (compressionType === 'br') {
+ compressor = zlib.createBrotliCompress();
+ extension = '.br';
+ }
+
+ res.writeHead(200, {
+ 'Content-Disposition': `attachment; filename=${fileName}${extension}`,
+ 'Content-Type': 'application/octet-stream',
+ });
+
+ pipeline(Readable.from(fileBuffer), compressor, res, () => {});
+
+ });
+
+ return;
+ }
+
+ res.statusCode = 404;
+ res.end('Not Found');
+ });
}
module.exports = {
diff --git a/src/index.html b/src/index.html
new file mode 100644
index 0000000..7d3bfe3
--- /dev/null
+++ b/src/index.html
@@ -0,0 +1,24 @@
+
+
+
+
+
+ Document
+
+
+
+
+
+
+
+
+
+
+
+
+
+
From 73b9c58a071bf0f86b05cf451e7881b2c50995f2 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <57196165+oberezhnay@users.noreply.github.com>
Date: Tue, 6 Jan 2026 21:51:42 +0200
Subject: [PATCH 2/4] add fixes after review
---
src/createServer.js | 5 +----
src/index.html | 6 +++---
2 files changed, 4 insertions(+), 7 deletions(-)
diff --git a/src/createServer.js b/src/createServer.js
index 7c8c7ac..2c856fc 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -44,9 +44,7 @@ function createServer() {
const contentType = headers['content-type'];
if (!contentType || !contentType.includes('multipart/form-data')) {
- res.statusCode = 400;
-
- return;
+ return sendStatus(res, 400);
}
const boundary = '--' + contentType.split('boundary=')[1];
@@ -117,7 +115,6 @@ function createServer() {
});
pipeline(Readable.from(fileBuffer), compressor, res, () => {});
-
});
return;
diff --git a/src/index.html b/src/index.html
index 7d3bfe3..e9e6127 100644
--- a/src/index.html
+++ b/src/index.html
@@ -6,11 +6,11 @@
Document
-
+