From: Jin-Seong Kim <jseong82.kim@samsung.com>
Date: Tue, 18 Jul 2017 05:32:00 +0000 (+0900)
Subject: netutils/libcoap : patch to prevent memory leakage caused by observers
X-Git-Tag: 1.1_Public_Release~318^2~51
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b557dc0bd7626d39c1588fb2ef2d1e3ac32faefa;p=rtos%2Ftinyara.git

netutils/libcoap : patch to prevent memory leakage caused by observers

This commit is patch to prevent memory leakage caused by observers
 - there is no routine to free observers for libcoap-server
 - remained observers in a resource can cause memory leakage

Change-Id: Ib2aefc9cd5f9572f5170fc96f0f832e02692dfc9
Signed-off-by: Jin-Seong Kim <jseong82.kim@samsung.com>
---

diff --git a/apps/netutils/libcoap/net.c b/apps/netutils/libcoap/net.c
index 876d57e..1bfc400 100644
--- a/apps/netutils/libcoap/net.c
+++ b/apps/netutils/libcoap/net.c
@@ -493,6 +493,16 @@ void coap_free_context(coap_context_t *context)
 #else
 	HASH_ITER(hh, context->resources, res, rtmp) {
 #endif
+/* To prevent memory leakage due to remained subscribers */
+#ifndef WITHOUT_OBSERVE
+		coap_subscription_t *s = NULL;
+		for (s = list_head(res->subscribers); s; s = list_item_next(s)) {
+			if (s) {
+				list_remove(res->subscribers, s);
+				coap_free(s);
+			}
+		}
+#endif
 		coap_delete_resource(context, res->key);
 	}
 #endif /* WITH_POSIX || WITH_LWIP */