architecture.txt

Message - custom type represeting the message
    from User
    to   User
    message (utf-8 string)
    messageType (binary, text)


User - custom type represeting a user
    Id
    In chan Message
    Out chan Message


Group - multicast wrapper of users where when a message is recieved
        on any user in channel, it multicasts the message to all out channels
        for the rest of the users
    Id


History - Store for conversations (p2p or groups)


StatusHandler - manages the user connection status
    ChangeStatus(for User, status string)
    Status(for User) string


Contacts - Stores and manages contacts for each user
    AddContact(for User, newContact User)
    RemoveContact(for User, newContact User)
    ListContacts(for User) []User


Transport - exports (Contact)
    - JSON based protocol, WebSocket, HTTP(S), telnet, tcp, etc...
    - starts a new go routine with listener for each out channel for each user
        and if message is available through the channel, it packs it with the current
        protocol implementation and sends it across the network
    OnUserConnected
    OnUserDisconnected
    OnUserStatusChange
    authenticate


| Client -> Server protocol |
Message - structure which represents the message communication between
          the server and a client
    HEADER
        from
        to
        messageType (control, message, file, tmp)
    BODY:
        transport representation (WebSocket, HTTP, telnet, tcp..)