text: /**************************************************************************/
  /*                                                                        */
  /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
  /*                                                                        */
  /*       This software is licensed under the Microsoft Software License   */
  /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
  /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
  /*       and in the root directory of this software.                      */
  /*                                                                        */
  /**************************************************************************/
  
  #ifndef NX_USER_H
  #define NX_USER_H
  
  #define NX_SECURE_ENABLE
  #define NX_ENABLE_EXTENDED_NOTIFY_SUPPORT
  #define NX_DNS_CLIENT_USER_CREATE_PACKET_POOL
  
  #define NXD_MQTT_CLOUD_ENABLE
  
  #define NX_ENABLE_IP_PACKET_FILTER
  
  #define NX_SNTP_CLIENT_MIN_SERVER_STRATUM 3
  
  #define NX_PACKET_ALIGNMENT 32
  #define NX_DISABLE_ICMPV4_RX_CHECKSUM
  #define NX_DISABLE_ICMPV4_TX_CHECKSUM  
  #define NX_DISABLE_IP_RX_CHECKSUM
  #define NX_DISABLE_IP_TX_CHECKSUM
  #define NX_DISABLE_TCP_RX_CHECKSUM
  #define NX_DISABLE_TCP_TX_CHECKSUM
  #define NX_DISABLE_UDP_RX_CHECKSUM
  #define NX_DISABLE_UDP_TX_CHECKSUM
  #define NX_TCP_ACK_EVERY_N_PACKETS  2
  
  /* Define various build options for the NetX Duo port.  The application should either make changes
     here by commenting or un-commenting the conditional compilation defined OR supply the defines
     though the compiler's equivalent of the -D option.  */
  
  
  /* Override various options with default values already assigned in nx_api.h or nx_port.h. Please
     also refer to nx_port.h for descriptions on each of these options.  */
  
  
  /* Configuration options for Interface */
  
  /* NX_MAX_PHYSICAL_INTERFACES defines the number physical network interfaces
     present to NetX Duo IP layer.  Physical interface does not include
     loopback interface. By default there is at least one physical interface
     in the system. */
  /*
  #define NX_MAX_PHYSICAL_INTERFACES    1
  */
  
  /* Defined, this option disables NetX Duo support on the 127.0.0.1 loopback interface.
     127.0.0.1 loopback interface is enabled by default.  Uncomment out the follow code to disable
     the loopback interface. */
  /*
  #define NX_DISABLE_LOOPBACK_INTERFACE
  */
  
  /* If defined, the link driver is able to specify extra capability, such as checksum offloading features. */
  /*
  #define NX_ENABLE_INTERFACE_CAPABILITY
  */
  
  
  /* Configuration options for IP */
  
  /* This defines specifies the number of ThreadX timer ticks in one second. The default value is based
     on ThreadX timer interrupt.  */
  /*
  #ifdef TX_TIMER_TICKS_PER_SECOND
  #define NX_IP_PERIODIC_RATE         TX_TIMER_TICKS_PER_SECOND
  #else
  #define NX_IP_PERIODIC_RATE         100
  #endif
  */
  
  /* Defined, NX_ENABLE_IP_RAW_PACKET_FILTER allows an application to install a filter
     for incoming raw packets. This feature is disabled by default. */
  /*
  #define NX_ENABLE_IP_RAW_PACKET_FILTER
  */
  
  /* This define specifies the maximum number of RAW packets can be queued for receive.  The default
     value is 20.  */
  /*
  #define NX_IP_RAW_MAX_QUEUE_DEPTH 20
  */
  
  /* Defined, this option enables IP static routing feature.  By default IP static routing
     feature is not compiled in. */
  /*
  #define NX_ENABLE_IP_STATIC_ROUTING
  */
  
  /* This define specifies the size of IP routing table. The default value is 8. */
  /*
  #define NX_IP_ROUTING_TABLE_SIZE 8
  */
  
  /* This define specifies the maximum number of multicast groups that can be joined.
     The default value is 7.  */
  /*
  #define NX_MAX_MULTICAST_GROUPS     7
  */
  
  
  /* Configuration options for IPv6 */
  
  /* Disable IPv6 processing in NetX Duo.  */
  /*
  #define NX_DISABLE_IPV6
  */
  
  /* Define the number of entries in IPv6 address pool. */
  /*
  #ifdef NX_MAX_PHYSICAL_INTERFACES
  #define NX_MAX_IPV6_ADDRESSES (NX_MAX_PHYSICAL_INTERFACES * 3)
  #endif
  */
  
  /* Do not process IPv6 ICMP Redirect Messages. */
  /*
  #define NX_DISABLE_ICMPV6_REDIRECT_PROCESS
  */
  
  /* Do not process IPv6 Router Advertisement Messages. */
  /*
  #define NX_DISABLE_ICMPV6_ROUTER_ADVERTISEMENT_PROCESS
  */
  
  /* Do not send IPv6 Router Solicitation Messages. */
  /*
  #define NX_DISABLE_ICMPV6_ROUTER_SOLICITATION
  */
  
  /* Define the max number of router solicitations a host sends until a router response
     is received.  If no response is received, the host concludes no router is present. */
  /*
  #define NX_ICMPV6_MAX_RTR_SOLICITATIONS         3
  */
  
  /* Define the interval between which the host sends router solicitations in seconds. */
  /*
  #define NX_ICMPV6_RTR_SOLICITATION_INTERVAL     4
  */
  
  /* Define the maximum delay for the initial router solicitation in seconds. */
  /*
  #define NX_ICMPV6_RTR_SOLICITATION_DELAY        1
  */
  
  /* Do not send ICMPv4 Error Messages. */
  /*
  #define NX_DISABLE_ICMPV4_ERROR_MESSAGE
  */
  
  /* Do not send ICMPv6 Error Messages. */
  /*
  #define NX_DISABLE_ICMPV6_ERROR_MESSAGE
  */
  
  /* Disable the Duplicate Address Detection (DAD) protocol when configuring the host IP address. */
  /*
  #define NX_DISABLE_IPV6_DAD
  */
  
  /* If defined, application is able to control whether or not to perform IPv6 stateless
     address autoconfiguration with nxd_ipv6_stateless_address_autoconfig_enable() or
     nxd_ipv6_stateless_address_autoconfig_disable() service.  If defined, the system starts
     with IPv6 stateless address autoconfiguration enabled.  This feature is disabled by default. */
  /*
  #define NX_IPV6_STATELESS_AUTOCONFIG_CONTROL
  */
  
  /* If enabled, application is able to install a callback function to get notified
     when an interface IPv6 address is changed. By default this feature is disabled. */
  /*
  #define NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY
  */
  
  /* Defined, this option prevents NetX Duo from removing stale (old) cache table entries
     whose timeout has not expired so are otherwise still valid) to make room for new entries
     when the table is full.  Static and router entries are not purged.  */
  /*
  #define NX_DISABLE_IPV6_PURGE_UNUSED_CACHE_ENTRIES
  */
  
  /* This define enables simple IPv6 multicast group join/leave function.  By default
     the IPv6 multicast join/leave function is not enabled. */
  /*
  #define NX_ENABLE_IPV6_MULTICAST
  */
  
  /* Defined, Minimum Path MTU Discovery feature is enabled.  */
  /*
  #define NX_ENABLE_IPV6_PATH_MTU_DISCOVERY
  */
  
  /* Define wait interval in seconds to reset the path MTU for a destination
     table entry after decreasing it in response to a packet too big error message.
     RFC 1981 Section 5.4 states the minimum time to wait is
     5 minutes and recommends 10 minutes.
  */
  /*
  #define NX_PATH_MTU_INCREASE_WAIT_INTERVAL               600
  */
  
  
  /* Configuration options for Neighbor Discovery.  */
  /* Define values used for Neighbor Discovery protocol.
     The default values are suggested by RFC2461, chapter 10. */
  
  /* Define the maximum number of multicast Neighbor Solicitation packets
     NetX Duo sends for a packet destination needing physical mapping
     to the IP address. */
  /*
  #define NX_MAX_MULTICAST_SOLICIT        3
  */
  
  /* Define the maximum number of unicast Neighbor Solicitation packets
     NetX Duo sends for a cache entry whose reachable time has expired
     and gone "stale". */
  /*
  #define NX_MAX_UNICAST_SOLICIT          3
  */
  
  /* Define the length of time, in seconds, that a Neighbor Cache table entry
     remains in the reachable state before it becomes state. */
  /*
  #define NX_REACHABLE_TIME               30
  */
  
  /* Define the length of time, in milliseconds, between retransmitting
     Neighbor Solicitation (NS) packets. */
  /*
  #define NX_RETRANS_TIMER                1000
  */
  
  /* Define the length of time, in seconds, for a Neighbor Cache entry
     to remain in the Delay state.  This is the Delay first probe timer. */
  /*
  #define NX_DELAY_FIRST_PROBE_TIME       5
  */
  
  /* This defines specifies the maximum number of packets that can be queued while waiting for a
     Neighbor Discovery to resolve an IPv6 address. The default value is 4.  */
  /*
  #define NX_ND_MAX_QUEUE_DEPTH           4
  */
  
  /* Define the maximum ICMPv6 Duplicate Address Detect Transmit .  */
  /*
  #define NX_IPV6_DAD_TRANSMITS           3
  */
  
  /* Define the number of neighbor cache entries. */
  /*
  #define NX_IPV6_NEIGHBOR_CACHE_SIZE     16
  */
  
  /* Define the size of the IPv6 destination table. */
  /*
  #define NX_IPV6_DESTINATION_TABLE_SIZE  8
  */
  
  /* Define the size of the IPv6 prefix table. */
  /*
  #define NX_IPV6_PREFIX_LIST_TABLE_SIZE  8
  */
  
  
  /* Configuration options for IPSEC */
  
  /* This define enables IPSEC in NetX Duo.  */
  /*
  #define NX_IPSEC_ENABLE
  */
  
  
  /* Configuration options for NAT */
  
  /* This define enables NAT process in NetX Duo.  */
  /*
  #define NX_NAT_ENABLE
  */
  
  
  /* Configuration options for IGMP */
  
  /* Defined, IGMP v2 support is disabled.  By default NetX Duo
     is built with IGMPv2 enabled .  By uncommenting this option,
     NetX Duo reverts back to IGMPv1 only. */
  /*
  #define NX_DISABLE_IGMPV2
  */
  
  /* Configuration options for ARP */
  
  /* When defines, ARP reply is sent when address conflict occurs. */
  /*
  #define NX_ARP_DEFEND_BY_REPLY
  */
  
  /* To use the ARP collision hander to check for invalid ARP messages
     matching existing entries in the table (man in the middle attack),
     enable this feature.  */
  /*
  #define  NX_ENABLE_ARP_MAC_CHANGE_NOTIFICATION
  */
  
  /* This define specifies the number of seconds ARP entries remain valid. The default value of 0 disables
     aging of ARP entries.  */
  /*
  #define NX_ARP_EXPIRATION_RATE      0
  */
  
  /* This define specifies the number of seconds between ARP retries. The default value is 10, which represents
     10 seconds.  */
  /*
  #define NX_ARP_UPDATE_RATE          10
  */
  
  /* This define specifies the maximum number of ARP retries made without an ARP response. The default
     value is 18.  */
  /*
  #define NX_ARP_MAXIMUM_RETRIES      18
  */
  
  /* This defines specifies the maximum number of packets that can be queued while waiting for an ARP
     response. The default value is 4.  */
  /*
  #define NX_ARP_MAX_QUEUE_DEPTH      4
  */
  
  /* Defined, this option disables entering ARP request information in the ARP cache.  */
  /*
  #define NX_DISABLE_ARP_AUTO_ENTRY
  */
  
  /* Define the ARP defend interval. The default value is 10 seconds.  */
  /*
  #define NX_ARP_DEFEND_INTERVAL  10
  */
  
  
  /* Configuration options for TCP */
  
  /* This define specifies how the number of system ticks (NX_IP_PERIODIC_RATE) is divided to calculate the
     timer rate for the TCP delayed ACK processing. The default value is 5, which represents 200ms.  */
  /*
  #define NX_TCP_ACK_TIMER_RATE       5
  */
  
  /* This define specifies how the number of system ticks (NX_IP_PERIODIC_RATE) is divided to calculate the
     fast TCP timer rate. The fast TCP timer is used to drive various TCP timers, including the delayed ACK
     timer. The default value is 10, which represents 100ms.  */
  /*
  #define NX_TCP_FAST_TIMER_RATE      10
  */
  
  /* This define specifies how the number of system ticks (NX_IP_PERIODIC_RATE) is divided to calculate the
     timer rate for the TCP transmit retry processing. The default value is 1, which represents 1 second.  */
  /*
  #define NX_TCP_TRANSMIT_TIMER_RATE  1
  */
  
  /* This define specifies how many seconds of inactivity before the keepalive timer activates. The default
     value is 7200, which represents 2 hours.   */
  /*
  #define NX_TCP_KEEPALIVE_INITIAL    7200
  */
  
  /* This define specifies how many seconds between retries of the keepalive timer assuming the other side
     of the connection is not responding. The default value is 75, which represents 75 seconds between
     retries.  */
  /*
  #define NX_TCP_KEEPALIVE_RETRY      75
  */
  
  /* This define specifies the maximum packets that are out of order. The default value is 8.  */
  /*
  #define NX_TCP_MAX_OUT_OF_ORDER_PACKETS 8
  */
  
  /* This define specifies the maximum number of TCP server listen requests. The default value is 10.  */
  /*
  #define NX_MAX_LISTEN_REQUESTS      10
  */
  
  /* Defined, this option enables the optional TCP keepalive timer.  */
  /*
  #define NX_ENABLE_TCP_KEEPALIVE
  */
  
  /* Defined, this option enables the optional TCP immediate ACK response processing.  */
  /*
  #define NX_TCP_IMMEDIATE_ACK
  */
  
  /* This define specifies the number of TCP packets to receive before sending an ACK. */
  /* The default value is 2: ack every 2 packets.                                      */
  /*
  #define NX_TCP_ACK_EVERY_N_PACKETS  2
  */
  
  /* Automatically define NX_TCP_ACK_EVERY_N_PACKETS to 1 if NX_TCP_IMMEDIATE_ACK is defined.
     This is needed for backward compatibility. */
  #if (defined(NX_TCP_IMMEDIATE_ACK) && !defined(NX_TCP_ACK_EVERY_N_PACKETS))
  #define NX_TCP_ACK_EVERY_N_PACKETS 1
  #endif
  
  /* This define specifies how many transmit retires are allowed before the connection is deemed broken.
     The default value is 10.  */
  /*
  #define NX_TCP_MAXIMUM_RETRIES      10
  */
  
  /* This define specifies the maximum depth of the TCP transmit queue before TCP send requests are
     suspended or rejected. The default value is 20, which means that a maximum of 20 packets can be in
     the transmit queue at any given time.  */
  /*
  #define NX_TCP_MAXIMUM_TX_QUEUE     20
  */
  
  /* This define specifies how the retransmit timeout period changes between successive retries. If this
     value is 0, the initial retransmit timeout is the same as subsequent retransmit timeouts. If this
     value is 1, each successive retransmit is twice as long. The default value is 0.  */
  /*
  #define NX_TCP_RETRY_SHIFT          0
  */
  
  /* This define specifies how many keepalive retries are allowed before the connection is deemed broken.
     The default value is 10.  */
  /*
  #define NX_TCP_KEEPALIVE_RETRIES    10
  */
  
  /* Defined, this option enables the TCP window scaling feature. (RFC 1323). Default disabled. */
  /*
  #define NX_ENABLE_TCP_WINDOW_SCALING
  */
  
  /* Defined, this option disables the reset processing during disconnect when the timeout value is
     specified as NX_NO_WAIT.  */
  /*
  #define NX_DISABLE_RESET_DISCONNECT
  */
  
  /* If defined, the incoming SYN packet (connection request) is checked for a minimum acceptable
     MSS for the host to accept the connection. The default minimum should be based on the host
     application packet pool payload, socket transmit queue depth and relevant application specific parameters. */
  /*
  #define NX_ENABLE_TCP_MSS_CHECK
  #define NX_TCP_MSS_MINIMUM              128
  */
  
  /* If defined, NetX Duo has a notify callback for the transmit TCP socket queue decreased from
     the maximum queue depth.  */
  /*
  #define NX_ENABLE_TCP_QUEUE_DEPTH_UPDATE_NOTIFY
  */
  
  /* Defined, feature of low watermark is enabled. */
  /*
  #define NX_ENABLE_LOW_WATERMARK
  */
  
  /* Define the maximum receive queue for TCP socket. */
  /*
  #ifdef NX_ENABLE_LOW_WATERMARK
  #define NX_TCP_MAXIMUM_RX_QUEUE    20
  #endif
  */
  
  /* Configuration options for fragmentation */
  
  /* Defined, this option disables both IPv4 and IPv6 fragmentation and reassembly logic.  */
  /*
  #define NX_DISABLE_FRAGMENTATION
  */
  
  /* Defined, this option process IP fragmentation immediately.  */
  /*
  #define NX_FRAGMENT_IMMEDIATE_ASSEMBLY
  */
  
  /* This define specifies the maximum time of IP reassembly.  The default value is 60.
     By default this option is not defined.  */
  /*
  #define NX_IP_MAX_REASSEMBLY_TIME   60
  */
  
  /* This define specifies the maximum time of IPv4 reassembly.  The default value is 15.
     Note that if NX_IP_MAX_REASSEMBLY_TIME is defined, this option is automatically defined as 60.
     By default this option is not defined.  */
  /*
  #define NX_IPV4_MAX_REASSEMBLY_TIME 15
  */
  
  /* This define specifies the maximum time of IPv6 reassembly.  The default value is 60.
     Note that if NX_IP_MAX_REASSEMBLY_TIME is defined, this option is automatically defined as 60.
     By default this option is not defined.  */
  /*
  #define NX_IPV6_MAX_REASSEMBLY_TIME 60
  */
  
  /* Configuration options for checksum */
  
  /* Defiend, this option disables checksum logic on received ICMPv4 packets.
     Note that if NX_DISABLE_ICMP_RX_CHECKSUM is defined, this option is
     automatically defined. By default this option is not defined.*/
  /*
  #define NX_DISABLE_ICMPV4_RX_CHECKSUM
  */
  
  /* Defiend, this option disables checksum logic on received ICMPv6 packets.
     Note that if NX_DISABLE_ICMP_RX_CHECKSUM is defined, this option is
     automatically defined. By default this option is not defined.*/
  /*
  #define NX_DISABLE_ICMPV6_RX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on received ICMPv4 or ICMPv6 packets.
     Note that if NX_DISABLE_ICMP_RX_CHECKSUM is defined, NX_DISABLE_ICMPV4_RX_CHECKSUM
     and NX_DISABLE_ICMPV6_RX_CHECKSUM are automatically defined. */
  /*
  #define NX_DISABLE_ICMP_RX_CHECKSUM
  */
  
  /* Defiend, this option disables checksum logic on transmitted ICMPv4 packets.
     Note that if NX_DISABLE_ICMP_TX_CHECKSUM is defined, this option is
     automatically defined. By default this option is not defined.*/
  /*
  #define NX_DISABLE_ICMPV4_TX_CHECKSUM
  */
  
  /* Defiend, this option disables checksum logic on transmitted ICMPv6 packets.
     Note that if NX_DISABLE_ICMP_TX_CHECKSUM is defined, this option is
     automatically defined. By default this option is not defined.*/
  /*
  #define NX_DISABLE_ICMPV6_TX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on transmitted ICMPv4 or ICMPv6 packets.
     Note that if NX_DISABLE_ICMP_TX_CHECKSUM is defined, NX_DISABLE_ICMPV4_TX_CHECKSUM
     and NX_DISABLE_ICMPV6_TX_CHECKSUM are automatically defined. */
  /*
  #define NX_DISABLE_ICMP_TX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on received IP packets. This is useful if the link-layer
     has reliable checksum or CRC logic.  */
  /*
  #define NX_DISABLE_IP_RX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on transmitted IP packets.  */
  /*
  #define NX_DISABLE_IP_TX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on received TCP packets.  */
  /*
  #define NX_DISABLE_TCP_RX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on transmitted TCP packets.  */
  /*
  #define NX_DISABLE_TCP_TX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on received UDP packets.  */
  /*
  #define NX_DISABLE_UDP_RX_CHECKSUM
  */
  
  /* Defined, this option disables checksum logic on transmitted UDP packets.  Note that
     IPV6 requires the UDP checksum computed for outgoing packets.  If this option is
     defined, the IPv6 NetX Duo host must ensure the UDP checksum is computed elsewhere
     before the packet is transmitted. */
  /*
  #define NX_DISABLE_UDP_TX_CHECKSUM
  */
  
  /* Configuration options for statistics.  */
  
  /* Defined, ARP information gathering is disabled.  */
  /*
  #define NX_DISABLE_ARP_INFO
  */
  
  /* Defined, IP information gathering is disabled.  */
  /*
  #define NX_DISABLE_IP_INFO
  */
  
  /* Defined, ICMP information gathering is disabled.  */
  /*
  #define NX_DISABLE_ICMP_INFO
  */
  
  /* Defined, IGMP information gathering is disabled.  */
  /*
  #define NX_DISABLE_IGMP_INFO
  */
  
  /* Defined, packet information gathering is disabled.  */
  /*
  #define NX_DISABLE_PACKET_INFO
  */
  
  /* Defined, RARP information gathering is disabled.  */
  /*
  #define NX_DISABLE_RARP_INFO
  */
  
  /* Defined, TCP information gathering is disabled.  */
  /*
  #define NX_DISABLE_TCP_INFO
  */
  
  /* Defined, UDP information gathering is disabled.  */
  /*
  #define NX_DISABLE_UDP_INFO
  */
  
  /* Configuration options for Packet Pool */
  
  /* This define specifies the size of the physical packet header. The default value is 16 (based on
     a typical 16-byte Ethernet header).  */
  /*
  #define NX_PHYSICAL_HEADER          16
  */
  
  /* This define specifies the size of the physical packet trailer and is typically used to reserve storage
     for things like Ethernet CRCs, etc.  */
  /*
  #define NX_PHYSICAL_TRAILER         4
  */
  
  /* Defined, this option disables the addition size checking on received packets.  */
  /*
  #define NX_DISABLE_RX_SIZE_CHECKING
  */
  
  /* Defined, packet debug infromation is enabled.  */
  /*
  #define NX_ENABLE_PACKET_DEBUG_INFO
  */
  
  /* Defined, NX_PACKET structure is padded for alignment purpose. The default is no padding. */
  /*
  #define NX_PACKET_HEADER_PAD
  #define NX_PACKET_HEADER_PAD_SIZE   1
  */
  
  /* Defined, packet header and payload are aligned automatically by the value. The default value is sizeof(ULONG). */
  /*
  #define NX_PACKET_ALIGNMENT 32
  */
  
  /* If defined, the packet chain feature is removed. */
  /*
  #define NX_DISABLE_PACKET_CHAIN
  */
  
  /* Defined, the IP instance manages two packet pools. */
  /*
  #define NX_ENABLE_DUAL_PACKET_POOL
  */
  
  /* Configuration options for Others */
  
  /* Defined, this option bypasses the basic NetX error checking. This define is typically used
     after the application is fully debugged.  */
  /*
  #define NX_DISABLE_ERROR_CHECKING
  */
  
  /* Defined, this option enables deferred driver packet handling. This allows the driver to place a raw
     packet on the IP instance and have the driver's real processing routine called from the NetX internal
     IP helper thread.  */
  /*
  #define NX_DRIVER_DEFERRED_PROCESSING
  */
  
  /* Defined, the source address of incoming packet is checked. The default is disabled. */
  /*
  #define NX_ENABLE_SOURCE_ADDRESS_CHECK
  */
  
  /* Defined, the extended notify support is enabled.  This feature adds additional callback/notify services
     to NetX Duo API for notifying the application of socket events, such as TCP connection and disconnect
     completion.  These extended notify functions are mainly used by the BSD wrapper. The default is this
     feature is disabled.  */
  /*
  #define NX_ENABLE_EXTENDED_NOTIFY_SUPPORT
  */
  
  /* Defined, ASSERT is disabled. The default is enabled. */
  /*
  #define NX_DISABLE_ASSERT
  */
  
  /* Define the process when assert fails. */
  /*
  #define NX_ASSERT_FAIL while (1) tx_thread_sleep(NX_WAIT_FOREVER);
  */
  
  /* Defined, the IPv4 feature is disabled. */
  /*
  #define NX_DISABLE_IPV4
  */
  
  /* Defined, the destination address of ICMP packet is checked. The default is disabled.
     An ICMP Echo Request destined to an IP broadcast or IP multicast address will be silently discarded.
  */
  /*
  #define NX_ENABLE_ICMP_ADDRESS_CHECK
  */
  
  /* Define the max string length. The default value is 1024.  */
  /*
  #define NX_MAX_STRING_LENGTH                                1024
  */
  
  #endif
  
  