This page describes how to test DTLS based gcoap. It can be difficult to remember the details.

First, make sure the environment is OK. Run the dtls-sock example. Follow the readme, and note the default port is 20220.

Test two RIOT native instances

This test is similar to the dtls-sock test. Initialize tap via dist/tools/tapsetup. Be sure one of the RIOT instances use port tap0 and the other uses tap1. The test works with both link local addresses and ULAs.

Other

Testing against a libcoap instance does not work.