Write two Python scripts (client and server) that implement TCP to communicate over the network. The server should handle at least three simultaneous connections. The server does the following: O Start and keep listening for requests Accept multiple connections (with each clients name) send the list of currently connected clients to the newly connected client Quit when it receives a "quit" message from the client The client has the following options: Connect to the server (the client must send its name to the server) Receive the list of currently connecting clients Print out the list of connecting clients (the list should be updated if clients connect/leave). Send a "quit" message to terminate the connection and to quit O O O D O O O

Write two Python scripts (client and server) that implement TCP to communicate over the network. The server should handle at least three simultaneous connections. The server does the following: O Start and keep listening for requests Accept multiple connections (with each clients name) send the list of currently connected clients to the newly connected client Quit when it receives a "quit" message from the client The client has the following options: Connect to the server (the client must send its name to the server) Receive the list of currently connecting clients Print out the list of connecting clients (the list should be updated if clients connect/leave). Send a "quit" message to terminate the connection and to quit O O O D O O O

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Description: You are required to implement a server program that responds to both TCP and UDP requests from the corresponding clients. The service provided by the server is simply a substitute cipher/cryptosystem. The cipher replaces one character to another based on some key. The input message (plaintext) can be of any size but composed only of small-letter (abcdefghijklmnopqrstuvwxyz). The output (ciphertext) has the same size and composed also of small-letter characters. The key is limited to 7 characters (also small-letter). You need to treat each digit as a number according to its position in the alphabet. For example, a=0, b=1, …,z=26. To encrypt a message, you add a plaintext character with the corresponding key character (mod 26). The key might be repeated to match the length of the plaintext message. In the decryption, you subtract the corresponding key character from the ciphertext character (mod 26). Again the key might be repeated as necessary. For example, if the…
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