From 73aa574f163eb5c0579b1eb684bf0a79b0d7fa61 Mon Sep 17 00:00:00 2001
From: Olaf Bergmann <bergmann@tzi.org>
Date: Tue, 8 Mar 2016 13:08:15 +0100
Subject: [PATCH] coap_io.h: define flag to indicate that data is available

Non-blocking sockets can set COAP_ENDPOINT_HAS_DATA in flags to tell
coap_read() that this endpoint has new data available for reading.
---
 include/coap/coap_io.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/coap/coap_io.h b/include/coap/coap_io.h
index 69c302cb..2a324e5b 100644
--- a/include/coap/coap_io.h
+++ b/include/coap/coap_io.h
@@ -55,8 +55,10 @@ typedef struct coap_endpoint_t {
   int flags;
 } coap_endpoint_t;
 
-#define COAP_ENDPOINT_NOSEC 0x00
-#define COAP_ENDPOINT_DTLS  0x01
+#define COAP_ENDPOINT_NOSEC    0x0000
+#define COAP_ENDPOINT_DTLS     0x0001
+
+#define COAP_ENDPOINT_HAS_DATA 0x1000
 
 coap_endpoint_t *coap_new_endpoint(const coap_address_t *addr, int flags);