Question

Please take the following python server source code and add commenting and good programming practice updates:

from socket import *
serverPort = 12000
serverSocket = socket(AF_INET, SOCK_DGRAM)
serverSocket.bind((’’, serverPort))
print(”The server is ready to receive”)
while True:
message, clientAddress = serverSocket.recvfrom(2048)

modifiedMessage = message.decode().upper()

serverSocket.sendto(modifiedMessage.encode(), clientAddress)

Answer 1

Comments in python starts with "#" character. The entire line is considered to the a comment.

Note : We should always give an indentation after if, while and for loops. Since, you didn't mention any, I'm assuming all the statements written after while statement are part of while loop.

# Importing the required libraries i.e., socket

from socket import *

# Reserving an open port 12000 to serverPort so that it accepts the incoming request
serverPort = 12000

# Creating an instance of Socket and assigned two variables to it, AF_INET and SOCK_DGRM

# AF_INET represents address of IPV4 family

#SOCK_DGRM corresponds to connection oriented protocol
serverSocket = socket(AF_INET, SOCK_DGRAM)

# Binding the port

# passing an empty string instead of the IP

# Enables our computer to listen to any incoming requests from other computers on network
serverSocket.bind((’’, serverPort))

# Print statement to let user know that our socket is ready
print(”The server is ready to receive”)

# This is an infinite loop which runs till it is interrupted or an error occurs
while True:

# Configuring our computer to receive from Client address 2048
message, clientAddress = serverSocket.recvfrom(2048)

#Decoding the received message and coverting it into upper case

# Decoded message is stored in variable modifiedMessage

modifiedMessage = message.decode().upper()

# This modified message is now transferred to clientaddress

serverSocket.sendto(modifiedMessage.encode(), clientAddress)