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gcoap: issue RST on unknown observe notifications

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This commit is contained in:
Michel Rottleuthner 2023-11-09 18:56:53 +01:00
parent 021986c087
commit 94e8786715
1 changed files with 7 additions and 0 deletions
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7
sys/net/application_layer/gcoap/gcoap.c
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@ -536,6 +536,13 @@ static void _process_coap_pdu(gcoap_socket_t *sock, sock_udp_ep_t *remote, sock_
messagelayer_emptyresponse_type = COAP_TYPE_RST;
DEBUG("gcoap: Answering unknown CON response with RST to "
"shut up sender\n");
} else {
/* if the response was a (NON) observe notification and there is no
* matching request, the server must be informed that this node is
* no longer interested in this notification. */
if (coap_has_observe(&pdu)) {
messagelayer_emptyresponse_type = COAP_TYPE_RST;
}
}
}
break;