web_server.py

from socket import *

serverPort = 12008 # large port number as not to interfer, still lower than 2^16-1
serverName = 'hostname'

serverSocket = socket(AF_INET, SOCK_STREAM)
# Makes it so it uses IPV4 and TCP
serverSocket.bind(('', serverPort))
# binds socket to server
serverSocket.listen(1)
# Only queue up one connection

while True:
	# Establish the connection
	print('Ready to serve...')
	connectionSocket, addr = serverSocket.accept()
	# When client connects, create a client socket
	try:
		message = connectionSocket.recv(1024)
		# receive 1024 bits (or bytes) of message from client
		filename = message.split()[1]
		# parse HTML GET request so it only shows file name. Splits by whitespace and only first list argument
		f = open(filename[1:])
		# opens requested file
		outputdata = f.read()
		# Gets file data
		f.close()
		# closes file

		connectionSocket.send('HTTP/1.1 200 OK\r\n\r\n')
		# Sends HTTP OK response

		# Send the content of the requested file to the client
		for i in range(0, len(outputdata)):
			connectionSocket.send(outputdata[i])
		connectionSocket.close()
		# closes socket
	except IOError:
		# if file doesnt exist, send 404 response message
		print('ioError')
		connectionSocket.send("Error: 404. File not found.")
		connectionSocket.close()