From fa5ab4eeb65373c171730c032e9ea81c01855761 Mon Sep 17 00:00:00 2001
From: Ken Bannister <kb2ma@runbox.com>
Date: Fri, 18 May 2018 01:36:38 -0400
Subject: [PATCH] net/gcoap: Add format option to nanocoap
---
sys/include/net/nanocoap.h | 2 +-
sys/net/application_layer/gcoap/gcoap.c | 6 ++++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/sys/include/net/nanocoap.h b/sys/include/net/nanocoap.h
index ab2b350240..5e3ffb4b9a 100644
--- a/sys/include/net/nanocoap.h
+++ b/sys/include/net/nanocoap.h
@@ -175,7 +175,7 @@ extern "C" {
/**
* @brief Nanocoap-specific value to indicate no format specified
*/
-#define COAP_FORMAT_NONE (65535)
+#define COAP_FORMAT_NONE (UINT16_MAX)
/**
* @name Nanocoap specific maximum values
diff --git a/sys/net/application_layer/gcoap/gcoap.c b/sys/net/application_layer/gcoap/gcoap.c
index ac0f770337..fe7236e6f4 100644
--- a/sys/net/application_layer/gcoap/gcoap.c
+++ b/sys/net/application_layer/gcoap/gcoap.c
@@ -38,6 +38,12 @@
#define GCOAP_RESOURCE_WRONG_METHOD -1
#define GCOAP_RESOURCE_NO_PATH -2
+/*
+ * gcoap internal Content-Format option value. Not intended for use in a
+ * transmitted packet. Must be a 3-byte unsigned value.
+ */
+#define COAP_FORMAT_NO_PAYLOAD (UINT16_MAX + 1)
+
/* Internal functions */
static void *_event_loop(void *arg);
static void _listen(sock_udp_t *sock);
--
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