Computer Networks is an important topic and to understand the concepts, practical application of the concepts is needed. In this particular article, we will see how to make a simple file-sharing app using Python. An HTTP Web Server is software that understands URLs (web address) and HTTP (the protocol used to view webpages). Python has several packages which is a collection of modules. And it has several built-in servers. The modules used in this project are:

The HTTPServer is a socketserver, which creates and listens at the HTTP socket. The socketserver modules simplify the task of writing network servers. The webbrowser module provides us with a high-level interface to allow and display Web-based documents, simply calling the open() function. The pyqrcode module is used to generate QR Code in just two lines of code. OS module helps for interacting with the operating system. Used for opening files, manipulate paths, and read all lines in all the files on the command line. PyPNG allows PNG image files to be read and written using pure Python

pip install pyqrcode
pip install pypng

```# import necessary modules

for implementing the HTTP Web servers

import http.server

provides access to the BSD socket interface

import socket

a framework for network servers

import socketserver

to display a Web-based documents to users

import webbrowser

to generate qrcode

import pyqrcode from pyqrcode import QRCode

convert into png format

import png

to access operating system control

import os

assigning the appropriate port value

PORT = 8010

this finds the name of the computer user

os.environ['USERPROFILE']

changing the directory to access the files desktop

with the help of os module

desktop = os.path.join(os.path.join(os.environ['USERPROFILE']), 'OneDrive') os.chdir(desktop)

creating a http request

Handler = http.server.SimpleHTTPRequestHandler

returns, host name of the system under

which Python interpreter is executed

hostname = socket.gethostname()

finding the IP address of the PC

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s.connect(("8.8.8.8", 80)) IP = "http://" + s.getsockname()[0] + ":" + str(PORT) link = IP

converting the IP address into the form of a QRcode

with the help of pyqrcode module

converts the IP address into a Qrcode

url = pyqrcode.create(link)

saves the Qrcode inform of svg

url.svg("myqr.svg", scale=8)

opens the Qrcode image in the web browser

webbrowser.open('myqr.svg')

Creating the HTTP request and serving the

folder in the PORT 8010,and the pyqrcode is generated

continuous stream of data between client and server

with socketserver.TCPServer(("", PORT), Handler) as httpd: print("serving at port", PORT) print("Type this in your Browser", IP) print("or Use the QRCode") httpd.serve_forever()

```