Start NaviServer with the sample config in one window in the foreground:
$ /usr/local/ns/bin/nsd -t nscoap-config.tcl -f
The sample config file maps GET and POST requests to /foo/* for
forwarding to the HTTP server. The sample config file registers as
well a request handler for POST and GET on /foo/bar via
ns_register_proc. One can cetainly run other requests by adding
tcl/adp/html files into the pages directory, or via other means
possible by NaviServer.
To issue a CoAP GET request from other terminal, one can use e.g. the wget like coap-client from https://github.com/obgm/libcoap.git:
$ coap-client -m get coap://localhost/foo/bar
GET-okidoki
Issue a CoAP POST request (assuming, you have a file called TODO in your current directory):
$ coap-client -m post -f TODO coap://localhost/foo/bar
POST-okidoki(961)
The number between parens is the number of bytes transferred in
body of the POST request (check the registered proc in the
sample config file nscoap-config.tcl.
When issuing these requests, the terminal running the server in the
foreground shows some debugging information prefixed with
Debug(coap). This output can be controlled e.g. in the config file
via ns_logctl severity Debug(coap) on|off.