tcp_client.py

import socket

serverName = 'localhost'
serverPort = 12000

clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clientSocket.connect((serverName, serverPort))

sentence = input('Input lowercase sentence: ')
clientSocket.send(sentence.encode())

modifiedSentence = clientSocket.recv(1024)

print(f'From Server: {modifiedSentence}')

clientSocket.close()

tcp_server.py

import socket

serverPort = 12000
serverSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

serverSocket.bind(('', serverPort))
serverSocket.listen(1)

print('The server is ready to receive')

while 1:
    connectionSocket, addr = serverSocket.accept()
    sentence = connectionSocket.recv(1024)
    capitalizedSentence = sentence.upper()

    print(f'Received: {capitalizedSentence}')

    connectionSocket.send(capitalizedSentence)
    connectionSocket.close()

udp_client.py

import socket

serverName = 'localhost'
serverPort = 12000

clientSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
message = input('Input lowercase sentence: ')
clientSocket.sendto(message.encode(), (serverName, serverPort))

modifiedMessage, serverAddress = clientSocket.recvfrom(2048)
print(f'From Server: {modifiedMessage}')

clientSocket.close()

udp_server.py

import socket

serverPort = 12000
serverSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
serverSocket.bind(('', serverPort))

print('The server is ready to receive')

while 1:
    message, clientAddress = serverSocket.recvfrom(2048)
    modifiedMessage = message.upper()
    print(f'Received: {modifiedMessage}')

    serverSocket.sendto(modifiedMessage, clientAddress)