main.py

from socket import *

SERVER_HOST = "0.0.0.0"
SERVER_PORT = 8080

server = socket(AF_INET, SOCK_STREAM)

server.bind((SERVER_HOST, SERVER_PORT))
server.listen(5)

print(f"server is listening on {SERVER_PORT}....\n")

while True:
    client_socket, client_address = server.accept()
    request = client_socket.recv(2048).decode()

    print(request)

    header = request.split("\n")
    if len(header) > 0 and len(header[0].split()) >= 2:
        first_header_component = header[0].split()
        http_method = first_header_component[0]
        path = first_header_component[1]
    else:
        client_socket.close()
        continue

    if http_method == "GET":
        if path == "/":
            with open("index.html") as fin:
                content = fin.read()
        elif path == "/book":
            with open("book.json") as fin:
                content = fin.read()
        fin.close()
        response = "HTTP/1.1 200 OK\n\n" + content
    else:
        response = "HTTP/1.1 405 Method Not Allowed\n\nAllow: GET"

    client_socket.sendall(response.encode())
    client_socket.close()