Option to disable keep-alive feature about go-coap HOT 4 CLOSED

Yes there is such option: WithKeepAlive(nil) https://pkg.go.dev/github.com/go-ocf/go-coap/[email protected]/udp?tab=doc#WithKeepAlive

It is mentioned here: https://tools.ietf.org/html/rfc7252#section-1.2 end of part Reset Message

from go-coap.

Thanks for pointing that out, missed that small section of the RFC.

I'm using DTLS, where that option is not available if I'm not mistaken (https://github.com/go-ocf/go-coap/blob/v2.0.2/server.go#L55). The notes you've referred to are specifically for UDP, and I couldn't find a way that I can pass options to the underlying UDP socket of DTLS.
For reference, I'm using go-coap as follows, where it is imported as coap "github.com/go-ocf/go-coap/v2".

	err = coap.ListenAndServeDTLS(
		"udp4",
		fmt.Sprintf(":%v", config.Server.ListenPort),
		&dtlsConfig,
		mux.HandlerFunc(DefaultHandler),
	)

Another question, how should I pass an option, e.g. for keepalive, to dtls.NewServer? I'm relatively new to Go and don't understand how to pass a server option (e.g. for keepalive or blockwiseSZX).

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So If you want to use options you need to create own ListenAndServe:

func ListenAndServe(config Config) error {
        l, err := net.NewDTLSListener("udp4", fmt.Sprintf(":%v", config.Server.ListenPort), &dtlsConfig)
	if err != nil {
		return err
	}
	defer l.Close()
	s := dtls.NewServer(dtls.WithMux(mux.HandlerFunc(DefaultHandler)), dtls.WithKeepAlive(nil), dtls.WithBlockwise(...))
	return s.Serve(l)
}

from go-coap.

Good to know that I just have to create my own function for that, it worked as expected. Thanks for showing the example!

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