/pub-sub

Primary LanguageJava

Task 01

Client-Server Socket Application

This is a simple client-server socket application implemented in JAVA. The application demonstrates communication between a client and a server over a network using socket programming.

Requirments

  • Server listens on a specified port for incoming connections.
  • Client connects to the server using the server's IP address and port.
  • Client can send messages to the server, which are displayed on the server's CLI.
  • The client can type messages continuously until the keyword terminate is entered, upon which the client will disconnect and terminate.

Server

To start the server, run the following command in your terminal, replacing <port> with the desired port number:

javac pubsub_v1/Server.java 
java pubsub_v1.Server <port>

Client

To start the client, run the following command in your terminal

javac pubsub_v1/Client.java 
java pubsub_v1.Client <server ip> <port number> <PUBLISHER/SUBSCRIBER> <TOPIC>

Task 2

Client-Server Socket Application

This is an improved client-server socket application implemented in JAVA. The application demonstrates communication between a client and a server over a network using socket programming, with support for multiple concurrent client connections and role-based messaging (Publisher/Subscriber).

Requirments

  • Server handles multiple concurrent client connections.
  • Multiple client applications can connect to the server.
  • Typed text in a given client CLI is displayed on the Server terminal CLI.
  • Client application takes a third command line argument to indicate whether the client will act as either "Publisher" or "Subscriber".
  • The server echoes messages sent by any "Publisher" clients to all "Subscriber" clients’ terminals.
  • Publisher messages are only shown on Subscriber terminals, not on any Publisher terminals.

Server

To start the server, run the following commands in your terminal, replacing <port> with the desired port number:

javac pubsub_v2/Server.java 
java pubsub_v2.Server <port>

Client

To start the client, run the following command in your terminal

javac pubsub_v2/Client.java 
java pubsub_v2.Client <server ip> <port number> <PUBLISHER/SUBSCRIBER>

Task 3

Client-Server Socket Application

This is an improved client-server socket application implemented in JAVA. The application demonstrates communication between a client and a server over a network using socket programming, with support for multiple concurrent client connections, role-based messaging (Publisher/Subscriber), and topic/subject-based filtering of messages.

Requirements

  • Server handles multiple concurrent client connections.
  • Multiple client applications can connect to the server.
  • Typed text in a given client CLI is displayed on the Server terminal CLI.
  • Client application takes a third command line argument to indicate whether the client will act as either "Publisher" or "Subscriber".
  • Client application takes a fourth command line argument specifying the topic/subject of either the Publisher or Subscriber.
  • The server echoes messages sent by any "Publisher" clients to all "Subscriber" clients’ terminals who are subscribed to the same topic/subject.
  • Publisher messages are only shown on Subscriber terminals that are subscribed to the same topic/subject, not on any Publisher terminals.

Server

To start the server, run the following commands in your terminal, replacing <port> with the desired port number:

javac pubsub_v3/Server.java 
java pubsub_v3.Server <port>

Client

To start the client, run the following command in your terminal

javac pubsub_v3/Client.java 
java pubsub_v3.Client <server ip> <port number> <PUBLISHER/SUBSCRIBER> <Topic>