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In this project,use java to write a chat program that enables real-time communication between 3 persons....

In this project,use java to write a chat program that enables real-time communication between 3 persons. Specifically the program should permit chat sessions between 2 well as 3 persons,. In case of 3 persons, messages generated by one should reach the other two (Its a conferencing facility and not an individual chat facility). The chat program needs to allow a user to type messages, which should be conveyed to the other end(s) and displayed at the other end(s). The user interface need not be sophisticated, but should be usable. It can be text-based or can be graphical. Your program should only use UDP sockets, no TCP sockets. This means that you have to implement reliability (of the messages) on top of UDP, in your own program, without using TCP. (Note that you are simulating packet losses). You don’t have to worry about congestion/flow control but you would need to ensure packets are in order. You can choose to implement any type of reliability mechanism (even your own design as long as it works).

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