net: lib: coap_client: Send RST for unknown queries (350d20e0) · Commits · Wenxi XU / zephyr

subsys/net/lib/coap/coap_client.c

+21 −0

Original line number	Diff line number	Diff line
		@@ -651,6 +651,26 @@ static int send_ack(struct coap_client client, const struct coap_packet req,
		return 0;
		}

		static int send_rst(struct coap_client client, const struct coap_packet req)
		{
		int ret;
		struct coap_packet rst;

		ret = coap_rst_init(&rst, req, client->send_buf, MAX_COAP_MSG_LEN);
		if (ret < 0) {
		LOG_ERR("Failed to initialize CoAP RST-message");
		return ret;
		}

		ret = send_request(client->fd, rst.data, rst.offset, 0, &client->address, client->socklen);
		if (ret < 0) {
		LOG_ERR("Error sending a CoAP RST-message");
		return ret;
		}

		return 0;
		}

		static struct coap_client_internal_request *get_request_with_token(
		struct coap_client client, const struct coap_packet resp)
		{
		@@ -750,6 +770,7 @@ static int handle_response(struct coap_client *client, const struct coap_packet
		internal_req = get_request_with_token(client, response);
		if (!internal_req) {
		LOG_WRN("No matching request for response");
		(void) send_rst(client, response); /* Ignore errors, unrelated to our queries */
		return 0;
		}