1 files changed, 369 insertions, 0 deletions
diff --git a/FreeRTOS-Plus/Test/FreeRTOS-Cellular-Interface/Integration/Test_code/Test_Cases/test_freertos_tcp.c b/FreeRTOS-Plus/Test/FreeRTOS-Cellular-Interface/Integration/Test_code/Test_Cases/test_freertos_tcp.c
new file mode 100644
index 000000000..aa00e4671
--- /dev/null
+++ b/FreeRTOS-Plus/Test/FreeRTOS-Cellular-Interface/Integration/Test_code/Test_Cases/test_freertos_tcp.c
@@ -0,0 +1,369 @@
+/*
+ * FreeRTOS+TCP V2.2.1
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://aws.amazon.com/freertos
+ * http://www.FreeRTOS.org
+ */
+
+/* Standard includes. */
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+/* FreeRTOS includes. */
+#include "FreeRTOS.h"
+#include "list.h"
+#include "FreeRTOS_IP.h"
+#include "FreeRTOS_IP_Private.h"
+#include "FreeRTOS_DNS.h"
+
+/* Test includes. */
+#include "unity_fixture.h"
+#include "unity.h"
+#include "freertos_tcp_test_access_declare.h"
+
+/**
+ * @brief Configuration for this test group.
+ */
+
+/*
+ * @brief Test group definition.
+ */
+TEST_GROUP( Full_FREERTOS_TCP );
+
+TEST_SETUP( Full_FREERTOS_TCP )
+{
+}
+
+TEST_TEAR_DOWN( Full_FREERTOS_TCP )
+{
+}
+
+TEST_GROUP_RUNNER( Full_FREERTOS_TCP )
+{
+    /* Run a parser test. */
+    RUN_TEST_CASE( Full_FREERTOS_TCP, prvParseDnsResponse );
+    RUN_TEST_CASE( Full_FREERTOS_TCP, ulDNSHandlePacket );
+
+    /* prvCheckOptions test. */
+    RUN_TEST_CASE( Full_FREERTOS_TCP, prvCheckOptions );
+
+    /* xProcessReceivedUDPPacket test. */
+    RUN_TEST_CASE( Full_FREERTOS_TCP, UDPPacketLength );
+}
+
+TEST( Full_FREERTOS_TCP, prvParseDnsResponse )
+{
+    uint8_t ucGoodDnsResponse[] =
+    {
+        0xd7, 0x66, 0x81, 0x80, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x61, 0x33, 0x37,
+        0x62, 0x78, 0x76, 0x31, 0x63, 0x62, 0x64, 0x61, 0x33, 0x6a, 0x67, 0x03, 0x69, 0x6f, 0x74, 0x09,
+        0x75, 0x73, 0x2d, 0x77, 0x65, 0x73, 0x74, 0x2d, 0x32, 0x09, 0x61, 0x6d, 0x61, 0x7a, 0x6f, 0x6e,
+        0x61, 0x77, 0x73, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x05,
+        0x00, 0x01, 0x00, 0x00, 0x01, 0x2c, 0x00, 0x1e, 0x0c, 0x69, 0x6f, 0x74, 0x6d, 0x6f, 0x6f, 0x6e,
+        0x72, 0x61, 0x6b, 0x65, 0x72, 0x09, 0x75, 0x73, 0x2d, 0x77, 0x65, 0x73, 0x74, 0x2d, 0x32, 0x04,
+        0x70, 0x72, 0x6f, 0x64, 0xc0, 0x1b, 0xc0, 0x48, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x00, 0xec,
+        0x00, 0x45, 0x09, 0x64, 0x75, 0x61, 0x6c, 0x73, 0x74, 0x61, 0x63, 0x6b, 0x2a, 0x69, 0x6f, 0x74,
+        0x6d, 0x6f, 0x6f, 0x6e, 0x72, 0x61, 0x6b, 0x65, 0x72, 0x2d, 0x75, 0x2d, 0x65, 0x6c, 0x62, 0x2d,
+        0x31, 0x77, 0x38, 0x71, 0x6e, 0x77, 0x31, 0x33, 0x33, 0x36, 0x7a, 0x71, 0x2d, 0x31, 0x31, 0x38,
+        0x36, 0x33, 0x34, 0x38, 0x30, 0x39, 0x32, 0x09, 0x75, 0x73, 0x2d, 0x77, 0x65, 0x73, 0x74, 0x2d,
+        0x32, 0x03, 0x65, 0x6c, 0x62, 0xc0, 0x29, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x22, 0xd3, 0x41, 0xdb, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x22, 0xd3, 0x53, 0xe4, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x22, 0xd3, 0xb6, 0x17, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x22, 0xd6, 0xf5, 0xf0, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x22, 0xd7, 0xe6, 0xa4, 0xc0, 0x72, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x23, 0x00, 0x04, 0x36, 0x95, 0x5e, 0x45
+    };
+    const uint32_t ulExpectedAddress = 0xf0f5d622;
+    uint8_t ucBadDnsResponseA[] =
+    {
+        0x3b, 0x6a, 0x81, 0x83, 0x01, 0x80, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x09, 0x69, 0x6e, 0x73,
+        0x70, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x08, 0x75, 0x73, 0x2d, 0x77, 0x65, 0x73, 0x74, 0x32, 0x09,
+        0x61, 0x6d, 0x61, 0x7a, 0x6f, 0x6e, 0x61, 0x77, 0x73, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01,
+        0x00, 0x01, 0xc0, 0x1f, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x33, 0x0e, 0x64,
+        0x6e, 0x73, 0x2d, 0x64, 0x79, 0x6e, 0x2d
+    };
+    uint8_t ucBadDnsResponseB[] =
+    {
+        0xf0, 0x23, 0x81, 0x80, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x05, 0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0,
+        0x0c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x01, 0x7c, 0x00, 0x1b, 0x03, 0x77, 0x77, 0x77, 0x05,
+        0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x07, 0x65, 0x64, 0x67, 0x65, 0x6b, 0x65,
+        0x79, 0x03, 0x6e, 0x65, 0x74, 0x00, 0xc0, 0x2b, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x1a, 0xd5,
+        0x00, 0x2f, 0x03, 0x77, 0x77, 0x77, 0x05, 0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d,
+        0x07, 0x65, 0x64, 0x67, 0x65, 0x6b, 0x65, 0x79, 0x03, 0x6e, 0x65, 0x74, 0x0b, 0x67, 0x6c, 0x6f,
+        0x62, 0x61, 0x6c, 0x72, 0x65, 0x64, 0x69, 0x72, 0x06, 0x61, 0x6b, 0x61, 0x64, 0x6e, 0x73, 0xc0,
+        0x41, 0xc0, 0x52, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x08, 0xb3, 0x00, 0x19, 0x05, 0x65, 0x36,
+        0x38, 0x35, 0x38, 0x05, 0x64, 0x73, 0x63, 0x65, 0x39, 0x0a, 0x61, 0x6b, 0x61, 0x6d, 0x61, 0x69,
+        0x65, 0x64, 0x67, 0x65, 0xc0, 0x41, 0xc0, 0x8d, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0a,
+        0x00, 0x04, 0x17, 0x4a, 0x3e, 0x96
+    };
+    uint8_t ucBadDnsResponseC[] =
+    {
+        0x3b, 0xa3, 0x81, 0x80, 0x00, 0x01, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x09, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x73, 0x6f, 0x66
+    };
+    uint8_t ucBadDnsResponseD[] =
+    {
+        0x95, 0x1e, 0x81, 0x80, 0x05, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x03, 0x63, 0x6e, 0x6e, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0, 0x0c, 0x00,
+        0x05, 0x00, 0x01, 0x00, 0x00, 0x00, 0x48, 0x00, 0x1b, 0x0a, 0x74, 0x75, 0x72, 0x6e, 0x65, 0x72,
+        0x2d, 0x74, 0x6c, 0x73, 0x03, 0x6d, 0x61, 0x70, 0x06, 0x66, 0x61, 0x73, 0x74, 0x6c, 0x79, 0x03,
+        0x6e, 0x65, 0x74, 0x00, 0xc0, 0x29, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x04,
+        0x97, 0x65, 0x35, 0x43
+    };
+    uint8_t ucBadDnsResponseE[] =
+    {
+        0xa8, 0x6d, 0x81, 0x80, 0x03, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x05, 0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0,
+        0x0c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1b, 0x03, 0x77, 0x77, 0x77, 0x05,
+        0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x07, 0x65, 0x64, 0x67, 0x65, 0x6b, 0x65,
+        0x79, 0x03, 0x6e, 0x65, 0x74, 0x00, 0xc0, 0x2b, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x1c, 0x2c,
+        0x00, 0x2f, 0x03, 0x77, 0x77, 0x77, 0x05, 0x61, 0x70, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d,
+        0x07, 0x65, 0x64, 0x67, 0x65, 0x6b, 0x65, 0x79, 0x03, 0x6e, 0x65, 0x74, 0x0b, 0x67, 0x6c, 0x6f,
+        0x62, 0x61, 0x6c, 0x72, 0x65, 0x64, 0x69, 0x72, 0x06, 0x61, 0x6b, 0x61, 0x64, 0x6e, 0x73, 0xc0,
+        0x41, 0xc0, 0x52, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x03, 0xd7, 0x00, 0x19, 0x05, 0x65, 0x36,
+        0x38, 0x35, 0x38, 0x05, 0x64, 0x73, 0x63, 0x65, 0x39, 0x0a, 0x61, 0x6b, 0x61, 0x6d, 0x61, 0x69,
+        0x65, 0x64, 0x67, 0x65, 0xc0, 0x41, 0xc0, 0x8d, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08,
+        0x00, 0x04, 0x17, 0x4b, 0xba, 0x13
+    };
+    uint8_t ucBadDnsResponseF[] =
+    {
+        0x6c, 0x1e, 0x81, 0x80, 0x00, 0x01, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x06, 0x61, 0x6d, 0x61, 0x7a, 0x6f, 0x6e, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01,
+        0xc0, 0x0c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x01, 0x57, 0x00, 0x0a, 0x03, 0x77, 0x77, 0x77,
+        0x03, 0x63, 0x64, 0x6e, 0xc0, 0x10, 0x41, 0x41, 0xc0, 0x2c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00,
+        0x00, 0x17, 0x00, 0x1f, 0x0e, 0x64, 0x33, 0x61, 0x67, 0x34, 0x68, 0x75, 0x6b, 0x6b, 0x68, 0x36,
+        0x32, 0x79, 0x6e, 0x0a, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x66, 0x72, 0x6f, 0x6e, 0x74, 0x03, 0x6e,
+        0x65, 0x74, 0x00, 0xc0, 0x42, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x2e, 0x00, 0x04, 0x0d,
+        0x20, 0xa7, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x9a, 0x3a, 0x01, 0x5c, 0x31, 0x1f, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00
+    };
+    uint8_t ucBadDnsResponseG[] =
+    {
+        0x73, 0xe1, 0x81, 0x80, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
+        0x06, 0x22, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x01, 0x00,
+        0x01, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x04, 0xd8, 0x3a, 0xd8, 0x84, 0x00, 0x34, 0x02, 0x41, 0x01,
+        0x2c, 0xb2, 0x1a, 0x01, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00
+    };
+    uint8_t ucBadDnsResponseH[] = /* Regress crash in prvReadNameField. */
+    {
+        0x10, 0x00, 0x00, 0x35, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x35,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91,
+        0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+    };
+    uint8_t ucBadDnsResponseI[] = /* Regress crash in prvSkipNameField. */
+    {
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8,
+        0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8,
+        0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0x00, 0x35,
+        0x0a, 0xf8, 0xf8, 0xf8, 0x27, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8,
+        0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0x16, 0x16, 0x21, 0x16,
+        0x16, 0x16, 0x16, 0x16, 0x16, 0x2a, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xf8,
+        0x27, 0xf8, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+        0x00, 0x16, 0x16, 0x16, 0x16, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x16, 0x5a,
+        0x00, 0x16, 0x00, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x21
+    };
+    uint32_t ulAddress = 0;
+
+    /* Parsing a valid packet should succeed. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucGoodDnsResponse,
+        sizeof( ucGoodDnsResponse ),
+        *( uint16_t * ) ucGoodDnsResponse );
+    TEST_ASSERT_EQUAL_UINT32( ulExpectedAddress, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseA,
+        sizeof( ucBadDnsResponseA ),
+        *( uint16_t * ) ucBadDnsResponseA );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseB,
+        sizeof( ucBadDnsResponseB ),
+        *( uint16_t * ) ucBadDnsResponseB );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseC,
+        sizeof( ucBadDnsResponseC ),
+        *( uint16_t * ) ucBadDnsResponseC );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseD,
+        sizeof( ucBadDnsResponseD ),
+        *( uint16_t * ) ucBadDnsResponseD );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseE,
+        sizeof( ucBadDnsResponseE ),
+        *( uint16_t * ) ucBadDnsResponseE );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseF,
+        sizeof( ucBadDnsResponseF ),
+        *( uint16_t * ) ucBadDnsResponseF );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseG,
+        sizeof( ucBadDnsResponseG ),
+        *( uint16_t * ) ucBadDnsResponseG );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseH,
+        sizeof( ucBadDnsResponseH ),
+        *( uint16_t * ) ucBadDnsResponseH );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+
+    /* Parsing a bad packet should fail gracefully. */
+    ulAddress = TEST_FreeRTOS_TCP_prvParseDNSReply(
+        ucBadDnsResponseI,
+        sizeof( ucBadDnsResponseI ),
+        *( uint16_t * ) ucBadDnsResponseI );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulAddress );
+    /* End test. */
+}
+
+TEST( Full_FREERTOS_TCP, ulDNSHandlePacket )
+{
+    NetworkBufferDescriptor_t xNetworkBuffer = { 0 };
+    uint8_t ucPartialUdpPacket[ sizeof( ipSIZE_OF_UDP_HEADER ) - 1 ] = { 0xFF };
+    uint32_t ulResult = 0;
+
+    /* Attempting to parse a packet that's shorter than a UDP header should be
+     * a no-op. */
+    xNetworkBuffer.pucEthernetBuffer = ucPartialUdpPacket;
+    xNetworkBuffer.xDataLength = sizeof( ucPartialUdpPacket );
+    ulResult = ulDNSHandlePacket( &xNetworkBuffer );
+    TEST_ASSERT_EQUAL_UINT32( 0, ulResult );
+}
+
+TEST( Full_FREERTOS_TCP, prvCheckOptions )
+{
+    uint8_t ucDivideByZero[] =
+    {
+        0x6f, 0xff, 0xff, 0xff, 0x0a, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+        0xde, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6f, 0x6f, 0x6f, 0x6d,
+        0x6f, 0xff, 0xff, 0xff, 0x0a, 0xff, 0xff, 0xff, 0xff, 0xe5, 0x6f, 0x6f,
+        0x6f, 0x6f, 0x6f, 0x6b, 0xbf, 0x6f, 0x03, 0xff, 0x04, 0x01, 0xb7, 0xff,
+        0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x04, 0x02, 0x02, 0x02, 0x02,
+        0x02, 0x02, 0x02, 0x02, 0x02, 0x04, 0x00, 0x00, 0x00, 0x02, 0x02, 0x02,
+        0x02, 0x02, 0xf8, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x05
+    };
+
+    FreeRTOS_Socket_t xSocket;
+    NetworkBufferDescriptor_t xNetworkBuffer;
+
+    xNetworkBuffer.pucEthernetBuffer = ucDivideByZero;
+    xNetworkBuffer.xDataLength = sizeof( ucDivideByZero );
+
+    TEST_FreeRTOS_TCP_prvTCPCreateWindow( &xSocket );
+    TEST_FreeRTOS_TCP_prvCheckOptions( &xSocket, &xNetworkBuffer );
+}
+
+TEST( Full_FREERTOS_TCP, UDPPacketLength )
+{
+    uint8_t ucBadUdpPacketA[] =
+    {
+        0xff, 0xff
+    };
+
+    uint8_t ucBadUdpPacketB[] =
+    {
+        0x0a, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0x54, 0xbf, 0xbf, 0xbf, 0xff, 0xbf,
+        0x0a, 0xbf, 0xbf, 0xbf, 0x3f, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf,
+        0x88, 0x00, 0xbf, 0xbf, 0xbf, 0x00, 0x32, 0xbf, 0xbf, 0xbf, 0x00, 0x35,
+        0x0a, 0xbf, 0xbf, 0x3a, 0xbf, 0xbf, 0xbf
+    };
+
+    BaseType_t xReturn = pdPASS;
+    uint16_t usPort = 65535;
+    NetworkBufferDescriptor_t xNetworkBuffer;
+
+    /* This test fails now since there is an assert
+     * checking for NULL pucEthernetBuffer. Also, the
+     * next tests do not run and this whole test case
+     * is scrapped.
+     *
+     * xNetworkBuffer.pucEthernetBuffer = NULL;
+     * xNetworkBuffer.xDataLength = 0;
+     *
+     * xReturn = xProcessReceivedUDPPacket( &xNetworkBuffer, usPort );
+     * TEST_ASSERT_EQUAL_UINT32_MESSAGE( pdFAIL, xReturn, "Failed to parse 0 size packet" );
+     */
+
+
+    xNetworkBuffer.pucEthernetBuffer = ucBadUdpPacketA;
+    xNetworkBuffer.xDataLength = sizeof( ucBadUdpPacketA );
+    xReturn = xProcessReceivedUDPPacket( &xNetworkBuffer, usPort );
+    TEST_ASSERT_EQUAL_UINT32_MESSAGE( pdFAIL, xReturn, "Failed to parse 2 bytes packet" );
+
+    xNetworkBuffer.pucEthernetBuffer = ucBadUdpPacketB;
+    xNetworkBuffer.xDataLength = sizeof( ucBadUdpPacketB );
+    xReturn = xProcessReceivedUDPPacket( &xNetworkBuffer, usPort );
+    TEST_ASSERT_EQUAL_UINT32( pdFAIL, xReturn );
+}