SYSC3303 Assignment 2 — Introduction to UDP

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This project showcases sending and receiving datagram packets through UDP sockets in Java.

Table of Contents

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• Description
  • UML Class Diagrams
  • UML Sequence Diagram
• Getting started
  • Prerequisites
  • Setup
  • Usage
• Credits

Description

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This project consists of three main components: a Client that sends requests, an IntermediateHost that acts as a relay between the client and the server, and a Server that processes requests and sends responses.

UML Class Diagrams

UML Sequence Diagram

Geting Started

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Prerequisites

To run this project, you will need Java Development Kit (JDK) 8 or higher.

Setup

Navigate to the project directory in your terminal, and compile Client.java, IntermediateHost.java, and Server.java using the javac command:

javac Client.java
javac IntermediateHost.java
javac Server.java

Usage

1. In a terminal window, navigate to the project directory, and start the server:

java Server 2. In a new terminal window or tab, navigate to the project directory, and start the intermediate host:

java IntermediateHost 3. In another terminal window or tab, navigate to the project directory, and start the client:

java Client

The client sends requests to the intermediate host, which sends them on to the server. The server sends responses to the intermediate host, which sends them on to the client. From the client's point of view, the intermediate host appears to be the server. From the server's point of view, the intermediate host appears to be the client. On the 11th request, the Client will send an invalid request.

Credits

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• Daniel Godfrey