Please the read previous instructions box carefully before start working in your project.

Objectives:

$1.$ Process Communication: Client$-$Server using sockets for communication between

processes.

$2.$ Multi$-$threading: Using threads and threads pools.

$3.$ Synchronization: Using locks for synchronization. Critical sections and shared

resources.

$4.$ Practical Problem Solving: Apply theoretical knowledge to solve a practical problem.

Requirements

This project involves implementing a $$guess $(2)/(3)$ of the average game$$ server that supports

multiple interactive games, each with multiple players.

Rules

$$ Each game is made up of multiple rounds. In each round, every player participating in

that game selects an integer between $0$ and $100($inclusive$)$ within a given time frame

and share with the game server.

$$ The winner of a round is the player whose selection is closest to two$-$thirds of the

average of all numbers chosen by all players for that round. For example, if four

players select $0,50,67,$ and $100,$ the player with $50$ wins the round, as $50$ is the

closest to two$-$thirds of the average $(36\mathrm{.}1667).$ There can be multiple winners per

round, for instance, if the numbers chosen identical.

Q A T A R U N I V E R S I T Y

College of Engineering

Dept. of Computer Science & Eng.

P r o j e c t $2$ Operating Systems Lab $($CMPS $405)$

Spring $2024$ Semester

$$

$$

$.$

Cheating is an academic violation according to Qatar University rules and regulations, and in some cases, it

may result in final dismissal from the University. Students should not under any circumstances commit or

participate in any cheating attempt or any act that violates student code of conduct.

It is the right of the instructor to test the student$$s undersetting of the project in any way during the demo and

discussion session. So$,$ a project that is $100\%$ working might be may be graded $(-100\%)$ due to student not

being able to explain a functionality they have implemented.

$$ Each player starts with $5$ points and loses a single point per losing round. A player is

eliminated from the game when they run out of points. After each round, the

following information is announced to all players: the round number, the players in

the game, the numbers chosen, the remaining points for each player, the outcome

$($winner or loser$)$ of that round, and which players have been eliminated, if any. The

game is won by the last remaining player.

$$ There is one additional rule to enhance gameplay and discourage players from

selecting $0$ all the time: In the last round, when there are two players left in the game

and when one chooses $0,$ the other player will win the game $($guess $>0).$

Game

$$ A game cannot start until at least two players have joined and is limited to a

maximum of $6$ players. Whenever a player joins a game, they are shown a list of

players already in the game, and other players are notified of the new player joining.

$$ The game starts once the player receives a ticket indicating that he already shared his

nickname. A ticket is $=($unique id $+$ nickname$).$ Note that only players who received

their tickets can play together.

$$ Once a game starts, it is activated and locked, and no other players can join.

$$ When a player is eliminated, they do not participate in number selection but continue

watching the game.

$$ An active game automatically ends when there is only one player left that has not

been eliminated.

Server

$$ The server issues tickets to uniquely identify the player across games and

connections. When a client connects to the server, they either provide an

alphanumeric pseudonym $($nickname$)$ to receive a new ticket associated with their

pseudonym or send a previously issued ticket, which has an associated pseudonym on

the server.

$$ After identifying themselves, the player is presented with a list of games that they can

join and a list of players that are connected to the server. The player can join a pre$-$

existing game or create a new game with a name and automatically be added to it$.$

There is always a default empty game on the server, even when no players are

connected. A player can join only one game at a time.

$$ The server regularly sends a message to each client and expects a reply; if no reply is

received, the player is timed out and dropped from their game, if any.

$$ The server also maintains a list of top$-5$ rankings $($leaderboard$)$ based on the total

number of games won by a player. This leaderboard is sent to a player when they first

connect to the server, before receiving the list oPlease the read previous instructions box carefully before start working in your project.

Objectives:

$1.$ Process Communication: Client$-$Server using sockets for communication between

processes.

$2.$ Multi$-$threading: Using threads and threads pools.

$3.$ Synchronization: Using locks for synchronization. Crit