DistComp1

What?

• Distributed Computing Assignment 1. More info below.

When?

• Due on Feb 4, 2014

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What does this code do?

• The goal of this assignment is to learn client server programming with TCP and UDP sockets. You are required to implement a server and a client for a ticket reservation system for a movie. The system should function with both TCP as well as UDP connections. Assume that the movie theater has c total seats. There is a single server, but multiple clients may access the server concurrently. Assume that a person can reserve only one seat at any given

Commands?

• The server accepts only the following calls from a client:

1. reserve – inputs the name of a person and reserves a seat against this name. If the theater does not have enough seats(completely booked), no seat is assigned and the command responds with message: ‘Sold out - No seat available’. If a reservation has already been made under that name, then the command responds with message: ‘Seat already booked against the name provided’. Otherwise, a seat is reserved against the name provided and the client is relayed a message: ‘Seat assigned to you is ’.
2. bookSeat – behaves similar to reserve command, but imposes an additional constraint that a seat is reserved if and only if there is no existing reservation against name and the seat having the number seatNum is available. If there is no existing reservation but seatNum is not available, the response is: ‘ is not available’.
3. search – returns the seat number reserved for name. If no reservation is found for name the system re- sponds with a message: ‘No reservation found for ’.
4. delete – frees up the seat allocated to that person. The command returns the seat number that was released. If no existing reservation was found, responds with: ‘No reservation found for ’.

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How to run the server:

./RUN.jar (or .sh, or .java) -s -p

Example: ./RUN.jar -s 100 -p 2014

Example: ./ReservationService.java -s 100 -p 2014

How to run the client:

./RUN.jar (or .sh, or .java) -c -t | -u -ip -p

Example: ./RUN.jar -c -u -ip 127.0.0.1 -p 2014

Example: ./ResurvationService.java -c -u -ip 127.0.0.1 -p 2014 (start the client and connect to the server, using the udp protocol, running at the ip address for the localhost and the port 2014).