private void ClientMessageReceived(Client client, string text)
{
    OnConsoleOutput(string.Format("{0} {1}: {2}", client.UserInfo.Nickname, client.IP, text));

    PacketInfo packetInfo;

    try
    {
        packetInfo = JsonConvert.DeserializeObject<PacketInfo>(text);
    }
    catch
    {
        return;
    }

    if (packetInfo != null && !string.IsNullOrEmpty(packetInfo.Command))
    {
        if (packetInfo.Command == "Connect")
        {
            client.UserInfo.Nickname = packetInfo.GetParameter("Nickname");
            string password = packetInfo.GetParameter("Password");
            ClientConnect(client, password);
        }
        else if (client.Authorized)
        {
            switch (packetInfo.Command)
            {
                case "Disconnect":
                    string reason = packetInfo.GetParameter("Reason");
                    ClientDisconnected(client, reason);
                    break;
                case "Message":
                    if (client.Authorized)
                    {
                        PacketInfo packetInfoMessage = new PacketInfo("Message");
                        MessageInfo messageInfo = packetInfo.GetData<MessageInfo>();
                        messageInfo.FromUser = client.UserInfo;
                        packetInfoMessage.Data = messageInfo;

                        if (messageInfo.ToUser != null && !string.IsNullOrEmpty(messageInfo.ToUser.Nickname))
                        {
                            SendTo(messageInfo.ToUser, packetInfoMessage);
                            SendTo(messageInfo.FromUser, packetInfoMessage);
                        }
                        else
                        {
                            SendToAll(packetInfoMessage);
                        }
                    }
                    break;
                case "Ping":
                    SendTo(client.UserInfo, new PacketInfo("Pong"));
                    break;
            }
        }
    }
}