In this project, you are required to enhance the ECHO client/server program that we discussed in the class. You need put up a simple client/server application to accomplish the following function: Server side program should listen on port 9999 for incoming request User(e.g. me) runs the client program to connect to server. Client program reads a sentence typed in by user via keyboard and user can select a command, then it sends both the command and the sentence to the server Upon receipt of the sentence and command, the server converts all the letters in the sentence into uppercase letters or lower letters or other format based on the command, and sends it back to the client. Client program displays the replied sentence on the screen. You need to build this application on top of either TCP or UDP sockets. Your server should support at least three commands: all uppercase, all lowercase, and another commands that you designed(something like initial caps, reverse each word, reverse the entire sentence, etc.). A set of sample Python code has been introduced in the class, please refer to the slides of Chapter 2. Other programming languages are also allowed. You'll receive o if your programs contains syntax errors! You also need to provide a document describing your protocol, i.e., underlying transport layer service, port numbers, the order and format of message sent and received by client/server, action associated with each message, etc. The document should provide enough information for others to implement client and server program to interact with yours