title: Does OpenThread allow multiple CoAP secure connections?
body: <p>I try to initialize 2 DTLS sessions with 2 different peers. The first <code>otCoapSecureConnect</code> returns <code>OT_ERROR_NONE</code>, the second one returns <code>OT_ERROR_INVALID_STATE</code>.  Does OpenThread allow multiple CoAP secure connections ?</p>