Python Code for the Web Server

Python Code for the Web Server
8. (10 points) Socket Programming Assignment: Web Server (page 179)
In this lab, you will learn the basics of socket programming for TCP connections in
Python: how to create a socket, bind it to a specific address and port, as well as send and
receive a HTTP packet. You will also learn some basics of HTTP header format.
You will develop a web server that handles one HTTP request at a time. Your web server
should accept and parse the HTTP request, get the requested file from the server’s file
system, create an HTTP response message consisting of the requested file preceded by
header lines, and then send the response directly to the client. If the requested file is not
present in the server, the server should send an HTTP “404 Not Found” message back to
the client.
Code
Below you will find the skeleton code for the Web server. You are to complete the
skeleton code. The places where you need to fill in code are marked with #Fill in start
and #Fill in end. Each place may require one or more lines of code.
Running the Server
Put an HTML file (e.g., HelloWorld.html) in the same directory that the server is in. Run
the server program. Determine the IP address of the host that is running the server (e.g.,
128.238.251.26). From another host, open a browser and provide the corresponding URL.
For example:
http://128.238.251.26:6789/HelloWorld.html
‘HelloWorld.html’ is the name of the file you placed in the server directory. Note also the
use of the port number after the colon. You need to replace this port number with
whatever port you have used in the server code. In the above example, we have used the
port number 6789. The browser should then display the contents of HelloWorld.html. If
you omit “:6789”, the browser will assume port 80 and you will get the web page from
the server only if your server is listening at port 80.
You can also run the server program on your own PC and access the webserver from the
same PC using the IP address for local host (127.0.0.1). For example:
http://127.0.0.1:6789/HelloWorld.html
Then try to get a file that is not present at the server. You should get a “404 Not Found”
message.
What to Hand in
You will hand in the complete server code along with the screen shots of your client
browser, verifying that you actually receive the contents of the HTML file from the
server.
Skeleton Python Code for the Web Server (Use the code on the next page as the
skeleton of your .py file and insert lines of code needed between #Fill in state and #Fill
in end. Please note that Python programs get structured through indentation, copy and
paste may change the indentation of the following lines. You can use either Python 2.7 or
Python 3.4, simple add a comment line in the first line of your program to tell me one you
used.)
#import socket module
from socket import *
serverSocket = socket(AF_INET, SOCK_STREAM)
#Prepare a sever socket
#Fill in start
#Fill in end
while True:
#Establish the connection
print ‘Ready to serve…’
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