P2P Messaging App

Simple peer-to-peer messaging app that uses a single RMI server to broker presence and friend requests. GUI client is implemented with JavaFX.

Requirements

• Java 21
• JavaFX 21 (includes JavaFX dependencies for development)
• Network: server machine must be reachable by clients (open RMI port and any remote object ports if needed).

Features

• User registration and login
• Change password, delete account
• Friend requests (send / accept / reject)
• Presence notifications (friends online/offline)
• P2P messaging (messages delivered via remote InterfacePeer)
• GUI with consistent dark theme (JavaFX)

Build

From project root:

./gradlew clean build

This compiles the project. Two useful Gradle tasks are provided in the script:

• Run server (development): ./gradlew runServer launches LadoServidor.ObxectoServidor and prompts for RMI registry port.
• Run GUI client (development): ./gradlew runClient launches LadoCliente.ClienteUI using JavaFX on the Gradle classpath.

Create distributable JARs

Two fat JAR tasks are available:

• Client fat JAR

./gradlew clientJar
# result: build/libs/p2p-client-all.jar 

• Server fat JAR

./gradlew serverJar
# result: build/libs/p2p-server-all.jar

Run (distributed)

From the root directory:

• Server

# from server machine
java -jar build/libs/p2p-server-all.jar

# via Gradle
./gradlew runServer

The server will prompt for a port to create the RMI registry (e.g. 1099)

If bd.txt and solis.txt are not found, it will throw an error and create the files.
Execution is going well, don't worry about that warnings.

• Client

java -jar build/libs/p2p-client-all.jar

# via Gradle
./gradlew runClient

The GUI will appear in another window.
On client startup enter server IP and port (the same port the server created RMI registry on).

There is an option to run just the terminal client ./gradlew runConsoleClient

❗ Warning

This is educational code, it should not be used in production.
It contains serious security bugs like saving passwords in plain text.