With the server and client code below, i cant to get them communicate across the network with the ping server and ping client running on different machines. please have pic of the output of the program to prove it works.

# UDPPingerServer.py # We will need the following module to generate randomized lost packets import random from socket import *

# Create a UDP socket # Notice the use of SOCK_DGRAM for UDP packets serverSocket = socket(AF_INET, SOCK_DGRAM) # Assign IP address and port number to socket serverSocket.bind(('', 12000))

while True: # Generate random number in the range of 0 to 10 rand = random.randint(0, 10) # Receive the client packet along with the address it is coming from message, address = serverSocket.recvfrom(1024) # Capitalize the message from the client message = message.upper() #If rand is less is than 4, we consider the packet lost and do not respond if rand < 4: continue # Otherwise, the server responds serverSocket.sendto(message, address)

# UDPingerClient.py

# We will need the following modules for system and time information

import sys, time

from socket import *

# Get the server hostname and port as command line arguments

argv = sys.argv

host = argv[1]

port = argv[2]

# Set initial timeout value

timeout = 2 # number of seconds before timeout

# Create UDP client socket

# Note the use of SOCK_DGRAM for UDP datagram packet

clientsocket = socket(AF_INET, SOCK_DGRAM)

# Set socket timeout

clientsocket.settimeout(timeout)

# Command line argument is a string, change the port into integer

port = int(port)

# Sequence number of the ping message

ptime = 0

# Ping for 10 times

while ptime < 10:

ptime += 1

# Format the message to be sent

data = "Pinging: " + str(ptime) + ", " + time.asctime()

# Display the message

print ("Ping Message from Client: " + data)

try:

# Sent time

RTTb = time.time()

# Send the UDP packet with the ping message

clientsocket.sendto(data,(host, port))

# Receive the server response

message, address = clientsocket.recvfrom(1024)

# Received time

RTTa = time.time()

# Display the server response as an output

print ("Reply from " + address[0] + ": " + message)

# Round trip time is the difference between sent and received time

print ("RTT: " + str(RTTa - RTTb))

except:

# Server does not response

# Assume the packet is lost

print ("Request timed out. ")

continue

# Close the client socket

clientsocket.close()