CoAP on Apache, CoAP Web Service

I am working with CoAP protocol on IoT but also I need a web service. I implemented the web service on Apache with HTTP protocol and a Proxy that converts CoAP-HTTP request and responses. But I don't want to use the Proxy to convert CoAP-HTTP. I want to implement directly CoAP web service. Do you have any idea about that. On Apache or different things. Just any idea?

Solution

As you wrote On Apache or different things, I will here talk about the second option :). To implement the CoAP server itself, I would recommend either

NodeJS with the CoAP package
Java implementation Californium, from Eclipse.org
More complete list available at http://coap.technology/impls.html#server-side, see Server-side

And then handle the communication with your Apache HTTP server via WebSockets and REST APIs. coap.me is also great to run tests during development.