IMessenger

Client-server application for real-time messaging

Description

General:

• Authorization;
• Registration of new users;
• All registered users have "General chat" by default;
• Exchange of messages between users in chats;
• Create a group chat;
• Create a private dialog with the selected user;
• Add users to the group chat;
• View additional information about users;
• Exit from the chat;
• Exit from the account;

Additionally:

Server:

• The database stores:
  • User credentials;
  • User chat list;
  • User messages;
• Use encryption for passwords and all kind of messages.
• Check for existing user login at registration step.
• Also user is not able to sign in again from the same device, if he is already online.

Protocol:

• Data transmission over the network in Json;
• Encryption of transmitted data;

Client:

• User interface was made with material design;
• Processing of user input when registering, authorizing and creating chats;
• Notification of a new message in the chat, adding to the group or a private dialogue;
• Local storage of the chat list and history of private user chats;

Build Client

Maven

To build IMessenger, run the following file:

build.cmd

To run IMessenger, run the following file:

run.cmd

NOTE : You need to set JAVA_HOME environment variable to point to Java 1.8 directory.

NOTE : IMessenger requires Java 1.8u60 and above.

Build Server

Maven:

Create required database tables.

To generate all needed db tables you have to run the following file

init.sql

Fill the properties file with your own database credentials.

Path to file ./resources/db.properties

For example:
user = Paul
password = someSuperSecretCode
dburl = jdbc:oracle:thin:@//localhost:1521/XE

Build server with file which located here:

./server/buildServer.bat

Then, simply start server with file which located here:

./server/runServer.bat

UI:

Main window

Authorization window

Registration window