[Python] 간단한 web server 구현

#!/usr/bin/python 3.5.2
from socket import *
import sys
 
serverSocket = socket(AF_INET, SOCK_STREAM)
 
serverPort = 12345
 
serverSocket.bind(('127.0.0.1',serverPort))
serverSocket.listen(1)
 
while True:
    #Establish the connection
    print('Ready to serve...')
    connectionSocket, addr = serverSocket.accept()          
    requestedParameter = {}
    try:
        message = connectionSocket.recv(1024).decode()
 
 
        # parsing request
        requestedParameter['method'] = message.split()[0]
        requestedParameter['filename'] = message.split()[1]
        requestedParameter['HTTP'] = message.split()[2]
 
        tmp = []
        tmp = message.split('\r\n')
        
        i = 2
 
        while True:
            if not tmp[i]:
                break
            requestedParameter[tmp[i].split(': ')[0]] = tmp[i].split(': ')[1]
            i += 1
        #print(requestedParameter)
        
 
        if 'GET' == requestedParameter['method']:
 
            #response
            outputdata = ""
 
            f = open(requestedParameter['filename'][1:],'rt', encoding="UTF8")
 
            filedata = f.read()
            f.close()
                 
            #Send HTTP header line into socket
            outputdata += requestedParameter['HTTP'] + " 200 OK\r\n"
            outputdata += "Date: Wed, 27 Sep 2018 16:30:31 GMT\r\n"
            outputdata += "Server: Apache/2.0.1\r\n"
            outputdata += "Accept-Ranges: bytes\r\n"
            outputdata += "Conetent-Length: " + str(len(filedata)) + "\r\n"
            outputdata += "Keep-Alive: timeout=10, max=100\r\n"
            outputdata += "Connection: Keep-Alive\r\n"
            outputdata += "Content-Type: text/html ; charset=ISO-8859-1\r\n"
            outputdata += "\r\n"
            outputdata += filedata
         
            #Send the content of the requested file to the client
            for i in range(0, len(outputdata)):           
                connectionSocket.send(outputdata[i].encode())
            connectionSocket.send("\r\n".encode())
            
            connectionSocket.close()
 
    except IOError:
        #connectionSocket.send("IOError\r\n".encode())
        outputdata += requestedParameter['HTTP'] + " 404 Not Found\r\n"
        outputdata += "Content-Type: text/html ; charset=ISO-8859-1\r\n"
        outputdata += "\r\n"
 
        f404 = open("404.html", 'rt', encoding="UTF8")
 
        outputdata += f404.read()
        for i in range(0, len(outputdata)):           
            connectionSocket.send(outputdata[i].encode())
        connectionSocket.send("\r\n".encode())
        connectionSocket.close()
 
serverSocket.close()
sys.exit() #Terminate the program after sending the corresponding data