From ad38dd9a6fee54b1c3d667e6bac09539645abef9 Mon Sep 17 00:00:00 2001
From: Ken Bannister <kb2ma@runbox.com>
Date: Mon, 1 Oct 2018 01:02:54 -0400
Subject: [PATCH] net/nanocoap: fix non-confirmable response type
---
sys/net/application_layer/nanocoap/nanocoap.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/sys/net/application_layer/nanocoap/nanocoap.c b/sys/net/application_layer/nanocoap/nanocoap.c
index 528a655a80..c958201f9c 100644
--- a/sys/net/application_layer/nanocoap/nanocoap.c
+++ b/sys/net/application_layer/nanocoap/nanocoap.c
@@ -370,8 +370,16 @@ ssize_t coap_build_reply(coap_pkt_t *pkt, unsigned code,
return -ENOSPC;
}
- /* if code is COAP_CODE_EMPTY (zero), use RST as type, else RESP */
- unsigned type = code ? COAP_RESP : COAP_RST;
+ /* if code is COAP_CODE_EMPTY (zero), assume Reset (RST) type */
+ unsigned type = COAP_TYPE_RST;
+ if (code) {
+ if (coap_get_type(pkt) == COAP_TYPE_CON) {
+ type = COAP_TYPE_ACK;
+ }
+ else {
+ type = COAP_TYPE_NON;
+ }
+ }
coap_build_hdr((coap_hdr_t *)rbuf, type, pkt->token, tkl, code,
ntohs(pkt->hdr->id));
--
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