X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=resource%2Fcsdk%2Fconnectivity%2Flib%2Flibcoap-4.1.1%2Fpdu.c;h=e979010d2d2227a57599f2394106409bcbb0ae6f;hb=1cee1631595cac6a6394ac2e0b365c6dd5a42c68;hp=1da40343769bc43a15512ac0cd96fb2e60c28dfb;hpb=390866079e285d2c74918432c0d597d5da52f8a0;p=platform%2Fupstream%2Fiotivity.git

diff --git a/resource/csdk/connectivity/lib/libcoap-4.1.1/pdu.c b/resource/csdk/connectivity/lib/libcoap-4.1.1/pdu.c
index 1da4034..e979010 100644
--- a/resource/csdk/connectivity/lib/libcoap-4.1.1/pdu.c
+++ b/resource/csdk/connectivity/lib/libcoap-4.1.1/pdu.c
@@ -275,7 +275,7 @@ coap_transport_type coap_get_tcp_header_type_from_size(unsigned int size)
     {
         return coap_tcp_16bit;
     }
-    else if (size < ULONG_MAX + COAP_TCP_LENGTH_FIELD_32_BIT)
+    else if (size - COAP_TCP_LENGTH_FIELD_32_BIT < ULONG_MAX)
     {
         return coap_tcp_32bit;
     }