We are currently using Mango's HTTP receiver, but have concerns about its security. (DoS or MITM) Our thoughts turned to maybe updating the micro controller(s) to send it data through HTTPS (SSL) and of course rewriting the data source module. However, it appears that this idea is maybe a little burdensome on the controller.
So what about http://mqtt.org/ ? It appears to answer the security questions and is lightweight. Clearly the HTTP input module would need updating.
What do you think?