GanSocket

a simple realtime socket client/server Project, includes:
GanServer: implemented by Java, eclipse project
GanAndroidApp: implemented by Kotlin, Android project
GaniOSApp: implemented by Swift, iOS project

Issues:

1. iOS app may miss message when hiding in background.
2. Message will not be stored permanently in server side (only be kept in memory).
3. There is no guarantee that the message will be received when send it.
4. Account authorization feature is not implemented.