From b7bad775697d6abcb952c65cb1a259a366b0ea05 Mon Sep 17 00:00:00 2001
From: Teemu Kultala <teemu.kultala@arm.com>
Date: Fri, 1 Jun 2018 13:17:09 +0300
Subject: [PATCH] random socket port number

---
 features/cellular/framework/common/CellularUtil.cpp | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/features/cellular/framework/common/CellularUtil.cpp b/features/cellular/framework/common/CellularUtil.cpp
index 97ba9d7db9..2fc6805397 100644
--- a/features/cellular/framework/common/CellularUtil.cpp
+++ b/features/cellular/framework/common/CellularUtil.cpp
@@ -15,6 +15,7 @@
  * limitations under the License.
  */
 #include "CellularUtil.h"
+#include "randLIB.h"
 #include <string.h>
 #include <stdlib.h>
 
@@ -315,12 +316,9 @@ int char_str_to_hex_str(const char* str, uint16_t len, char *buf, bool omit_lead
 
 uint16_t get_dynamic_ip_port()
 {
-    static uint16_t port;
-    port++;
-    if (port < 49152) {
-        port = 49152;
-    }
-    return port;
+    randLIB_seed_random(); 
+
+    return (randLIB_get_16bit() | 0xC000);
 }
 
 } // namespace mbed_cellular_util