I am trying to create a network architecture which has a single server and multiple clients. The clients can connect and disconnect at any time so they need to announce their existence or shut-down to the server. The server must be able to send data to any particular client.
What is the best scalability protocols/architecture to use for this?
Currently I use a REQ/REP so that clients can 'login' and 'logout', and a SURVEY socket so that the server can send data to all clients. The message sent has an ID for the particular client it wants to process the message.
Is this good, or is there something better?