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I am working with CoAP californium library using java and my problem is that I want to get the requested resource from client in the main function of server here ..

public static void main(String[] args) {
        // TODO Auto-generated method stub
        // binds on UDP port 5683
        CoapServer server=new CoapServer();
        // "hello"
        server.add(new HelloResource());
        // "subpath/Another"
        CoapResource path=new CoapResource("subpath");
        path.add(new AnotherResource());
        server.add(path);
        server.add(new RemovableResource(),new TimeResource(),new WritableResource());
        System.out.println("Resources added");
        server.start();}

what I should write after server.start() .. I know that the server use function deliverRequest(final Exchange exchange) function and findResource(final List<String> list) to search for the requested resource in the reasources tree.. but I want to get this value and store it in a variable in the main function of server

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Californium is designed to process many request simultaneously. Therefore it uses callbacks (CoapResource). May be I missunderstood your intention of the question. For me "all in main" sounds as an approach with a "blocking functions waiting for incoming requests and returning them". That is not intended with californium.

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