server.py

from socket import *
import os
import threading
import datetime
import http.server
import socketserver

serverIp = "localhost"
serverPort = 9998

# Create Socket
serverSocket = socket(AF_INET, SOCK_STREAM)

# Port Binding
serverSocket.bind((serverIp, serverPort))

serverSocket.listen(500)

print("Listening Server on address {}:{}".format(serverIp, serverPort))

# printing message so user can understand that server is ready to listen
print("Server is now accepting");


def handle_client_connection(client_socket, request, fileName, userinput, file):
    print("Received {}".format(request))

    if userinput == "GET":
        if os.path.exists("index.html"):
            f1 = open(os.getcwd() + "/index.html", "rb")
            data = f1.read()
            client_socket.sendall("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n".encode() + data)
            print("Successful Data Transmission")
        else:
            print("404 not found!!")
        client_socket.close()

    elif userinput == "PUT":
        print("PUT")
        f1 = open(fileName, "wb")
        f1.write(file)
        client_socket.send("Upload Successful".encode())
        client_socket.close()

    elif userinput == "HEAD":
        print("HEAD")
        client_socket.close()

    elif userinput == "DELETE":
        print("DELETE")
        if os.path.exists(fileName):
            os.remove(fileName)
            if os.path.exists(fileName):
                print("Upload Unsuccessfull")
            else:
                print("Successfully deleted!!")
        else:
            print("404 not found!!")
        client_socket.close()

    else:
        print("Invalid input")
        client_socket.close()


while True:
    # here server accept the client and store address of client in addr and message in connectionSocket
    client_socket, addr = serverSocket.accept()
    request = client_socket.recv(10244)
    print("Successfully Connected {}:{}".format(addr[0], addr[1]))

    file, fileName, userInput, httpVersion = [str(i) for i in request.decode('utf-8').split('||')]

    if httpVersion == "1.0":

        print("HTTP 1.0")
        # for i in range(1,10):
        handle_client_connection(client_socket, request, fileName, userInput, file.encode())
        
    else:
        print("HTTP 1.1")
        client_handler = threading.Thread(
            target=handle_client_connection, args=(client_socket, request, fileName, userInput, file.encode())
        )
        client_handler.start()