Do i see this correctly, TCP-based Websocket with JSON messages that are parsed?<p>That is very much removed from any MMORPG type of communication.<p>One of the hardest parts of a client/server MMO architecture is the network layer, which uses a lossless/retry/fault-prove UDP-based protocol. Everything else sits on top. Luckily, there are tons of sample libraries by now, I suggest peeking at the leaked SW Online sony code which includes the source for their implementation.