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Merge pull request #391 from mrdeep1/multicase-enforce

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net.c: Enforce non-confirmable for multicast request messages
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obgm authored and GitHub committed 2019-08-29 17:35:31 +02:00
2 parents c73214f882 82b04b8df8
commit 34e9c910d1
1 file changed
+8
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src/net.c
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@@ -734,6 +734,14 @@ coap_send_pdu(coap_session_t *session, coap_pdu_t *pdu, coap_queue_t *node) {
}
}
if (pdu->type == COAP_MESSAGE_CON &&
(session->sock.flags & COAP_SOCKET_NOT_EMPTY) &&
(session->sock.flags & COAP_SOCKET_MULTICAST)) {
/* Violates RFC72522 8.1 */
coap_log(LOG_ERR, "Multicast requests cannot be Confirmable (RFC7252 8.1)\n");
return -1;
}
if (session->state != COAP_SESSION_STATE_ESTABLISHED ||
(pdu->type == COAP_MESSAGE_CON && session->con_active >= COAP_DEFAULT_NSTART)) {
return coap_session_delay_pdu(session, pdu, node);