Architecture

Server architecture:

               +-----------+
               |           |
               |   Redis   |
          +----+           +-----+
          |    |           |     |
          |    |           |     |
          |    +-----------+     |
          |                      |
          |                      |
+---------+----------+-----------+---------+
|                    |                     |
|   frontend-server  |    game-server      |
|                    |                     |
|   - API            |    - Rooms          |
|   - Serve Files    |    - Game Events    |
|                    |                     |
|                    |                     |
+--------------------+---------------------+

User-Server-Interaction flowchart:

   USERS                                             SERVER

+----------------+  /api/login                       +------------------------------+
|                +----------------------------------->                              |
| USER A:        <-----------------------------------+ USER A registration          |
| {              | token <UUID>                      |                              |
| userName,      |                                   |                              |
| id: loginToken | /api/newroom                      |                              |
| }              +-----------------------------------> USER A authentication +      |
|                <-----------------------------------+ new Room                     |
|                | token <UUID>                      |                              |
|                |                                   |                              |
|                | ws://location/?t=<UUID>&r=<UUID>  |                              |
|                +-----------------------------------> USER A authentication +      |
|                <-----------------------------------+ add to room if open          |
|                | ws connection or close            |                              |
+----------------+                                   |                              |
                                                     |                              |
+----------------+  /api/login                       |                              |
|                +----------------------------------->                              |
| USER B:        <-----------------------------------+ USER B registration          |
| {              | token <UUID>                      |                              |
| userName,      |                                   |                              |
| id: loginToken | /api/openrooms                    |                              |
| }              +-----------------------------------> Open rooms                   |
|                <-----------------------------------+ Here: room of USER A         |
|                | openrooms <ARRAY>                 |                              |
|                |                                   |                              |
|                | ws://location/?t=<UUID>&r=<UUID>  |                              |
|                +-----------------------------------> USER B authentication        |
|                <-----------------------------------+ Join room of USER A          |
|                | ws connection or close            |                              |
+----------------+                                   +------------------------------+