I want to make an application that sends thousands of messages per second. These would be very small messages only a few characters each but also would be very rapid potentially 10-20 per second per client. The messages will be sent only from the server to different clients and coud potentially be up to 10,000 user at once so that is 200,000 messages per second.
These could be sent to clients on 3g and or wifi.
What do you think is capable of doing this? A xmpp application, udp messages with NAT traversal, or something else that I havent thought of yet?