/***************************************************************************/
/* Copyright (c) 2024 Microsoft Corporation                                */
/* Copyright (c) 2026 Eclipse ThreadX contributors                         */
/*                                                                         */
/* This program and the accompanying materials are made available under    */
/* the terms of the MIT License which is available at                      */
/* https://opensource.org/licenses/MIT.                                    */
/*                                                                         */
/* SPDX-License-Identifier: MIT                                            */
/***************************************************************************/

/* 6.28 For CLOSE call on state CLOSING, TCP MUST return with error: connection closing.  */

/* Procedure
  1. Client connect with Server.
  2. Server call disconnect, then Server state is FINWAIT1.
  3. Client call disconnect,then Server state is CLOSING.
  4. Server call disconnect.
  5. Judge the status.  */

#include    "tx_api.h"
#include    "nx_api.h"
#include    "nx_tcp.h"
#include   "nx_ram_network_driver_test_1500.h"
extern void    test_control_return(UINT status);
#if defined(NX_DISABLE_RESET_DISCONNECT) && !defined(NX_DISABLE_IPV4)

#define     DEMO_STACK_SIZE    2048

/* Define the ThreadX and NetX object control blocks...  */

static TX_THREAD               ntest_0;
static TX_THREAD               ntest_1;

static NX_PACKET_POOL          pool_0;
static NX_IP                   ip_0;
static NX_IP                   ip_1;
static NX_TCP_SOCKET           client_socket;
static NX_TCP_SOCKET           server_socket;

/* Define the counters used in the demo application...  */

static ULONG                   error_counter;
static ULONG                   fin_counter;

/* Define thread prototypes.  */
static void    ntest_0_entry(ULONG thread_input);
static void    ntest_1_entry(ULONG thread_input);
static void    ntest_0_connect_received(NX_TCP_SOCKET *server_socket, UINT port);
static void    ntest_0_disconnect_received(NX_TCP_SOCKET *server_socket);
extern void    _nx_ram_network_driver(struct NX_IP_DRIVER_STRUCT *driver_req);
extern void    _nx_ram_network_driver_1500(struct NX_IP_DRIVER_STRUCT *driver_req);
extern UINT    (*advanced_packet_process_callback)(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);
static UINT    my_packet_process_6_28(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);
static void    my_tcp_packet_receive_6_28(NX_IP *ip_ptr, NX_PACKET *packet_ptr);

/* Define what the initial system looks like.  */

#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void           netx_6_28_application_define(void *first_unused_memory)
#endif
{
CHAR       *pointer;
UINT       status;

    /* Setup the working pointer.  */
    pointer = (CHAR *) first_unused_memory;

    error_counter = 0;
    fin_counter = 0;

    /* Create the main thread.  */
    tx_thread_create(&ntest_0, "thread 0", ntest_0_entry, 0,  
                     pointer, DEMO_STACK_SIZE, 
                     3, 3, TX_NO_TIME_SLICE, TX_AUTO_START);

    pointer = pointer + DEMO_STACK_SIZE;

    /* Create the main thread.  */
    tx_thread_create(&ntest_1, "thread 1", ntest_1_entry, 0,  
                     pointer, DEMO_STACK_SIZE, 
                     4, 4, TX_NO_TIME_SLICE, TX_AUTO_START);

    pointer = pointer + DEMO_STACK_SIZE;

    /* Initialize the NetX system.  */
    nx_system_initialize();

    /* Create a packet pool.  */
    status = nx_packet_pool_create(&pool_0, "NetX Main Packet Pool", 256, pointer, 1536 * 16);
    pointer = pointer + 1536 * 16;

    if(status)
        error_counter++;

    /* Create an IP instance.  */
    status = nx_ip_create(&ip_0, "NetX IP Instance 0", IP_ADDRESS(1, 2, 3, 4), 0xFFFFFF00UL, &pool_0, _nx_ram_network_driver_1500,
                          pointer, 2048, 1);
    pointer = pointer + 2048;

    /* Create another IP instance.  */
    status += nx_ip_create(&ip_1, "NetX IP Instance 1", IP_ADDRESS(1, 2, 3, 5), 0xFFFFFF00UL, &pool_0, _nx_ram_network_driver,
                           pointer, 2048, 1);
    pointer = pointer + 2048;

    if(status)
        error_counter++;

    /* Enable ARP and supply ARP cache memory for IP Instance 0.  */
    status = nx_arp_enable(&ip_0, (void *) pointer, 1024);
    pointer = pointer + 1024;

    /* Enable ARP and supply ARP cache memory for IP Instance 1.  */
    status += nx_arp_enable(&ip_1, (void *) pointer, 1024);
    pointer = pointer + 1024;

    /* Enable ICMP for IP Instance 0 and 1.  */
    status = nx_icmp_enable(&ip_0);
    status = nx_icmp_enable(&ip_1);

    /* Check ARP enable status.  */
    if(status)
        error_counter++;

    /* Enable TCP processing for both IP instances.  */
    status = nx_tcp_enable(&ip_0);
    status += nx_tcp_enable(&ip_1);

    /* Check TCP enable status.  */
    if(status)
        error_counter++;
}

/* Define the test threads.  */

static void    ntest_0_entry(ULONG thread_input)
{
UINT       status;
ULONG      actual_status;

    /* Check for earlier error.  */
    if(error_counter)
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Print out test information banner.  */
    printf("NetX Test:   TCP Spec 6.28 Test........................................");

    /* Ensure the IP instance has been initialized.  */
    status = nx_ip_status_check(&ip_0, NX_IP_INITIALIZE_DONE, &actual_status, NX_IP_PERIODIC_RATE);

    /* Check status...  */
    if(status != NX_SUCCESS)
        error_counter++;  

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_0, &server_socket, "Server Socket", 
                                  NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 200,
                                  NX_NULL, ntest_0_disconnect_received);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Setup this thread to listen.  */
    status = nx_tcp_server_socket_listen(&ip_0, 12, &server_socket, 5, ntest_0_connect_received);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Accept a client socket connection.  */
    status = nx_tcp_server_socket_accept(&server_socket, NX_IP_PERIODIC_RATE);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Let driver delay SYN packet. */
    advanced_packet_process_callback = my_packet_process_6_28;

    status = nx_tcp_socket_disconnect(&server_socket, NX_NO_WAIT);

    /* Check for error.  */
    if(status)
        error_counter++;

    /*Let the server socket to check the FIN segment*/
    ip_0.nx_ip_tcp_packet_receive = my_tcp_packet_receive_6_28;

     tx_thread_suspend(&ntest_0);

    if (server_socket.nx_tcp_socket_state == NX_TCP_CLOSING)
    {
        status = nx_tcp_socket_disconnect(&server_socket, NX_IP_PERIODIC_RATE);

        if (status != NX_NOT_CONNECTED)
            error_counter++;
    }
    else
        error_counter++;


    /* Unaccept the server socket.  */
    status = nx_tcp_server_socket_unaccept(&server_socket);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Unlisten on the server port.  */
    status =  nx_tcp_server_socket_unlisten(&ip_0, 12);

    /* Check for error.  */
    if (status)
        error_counter++;

    /* Delete the socket.  */
    status = nx_tcp_socket_delete(&server_socket);

    /* Check for error.  */
    if(status)
        error_counter++;
}

static void    ntest_1_entry(ULONG thread_input)
{
UINT       status;

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_1, &client_socket, "Client Socket", 
        NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 300,
        NX_NULL, NX_NULL);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Bind the socket.  */
    status = nx_tcp_client_socket_bind(&client_socket, 12, NX_IP_PERIODIC_RATE);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Call connect to send an SYN.  */ 
    status = nx_tcp_client_socket_connect(&client_socket, IP_ADDRESS(1, 2, 3, 4), 12, 5 * NX_IP_PERIODIC_RATE);

    /* Check for error.  */
    if(status)
        error_counter++;

    status = nx_tcp_socket_disconnect(&client_socket, NX_NO_WAIT);

    /* Check for error.  */
    if(status)
        error_counter++;

    tx_thread_resume(&ntest_0);

    /* Determine if the test was successful.  */
    if((error_counter) || (fin_counter != 2))
    {
        printf("ERROR!\n");
        test_control_return(1);
    }
    else
    {
        printf("SUCCESS!\n");
        test_control_return(0);
    }

}

static void    ntest_0_connect_received(NX_TCP_SOCKET *socket_ptr, UINT port)
{

    /* Check for the proper socket and port.  */
    if((socket_ptr != &server_socket) || (port != 12))
        error_counter++;
}

static void    ntest_0_disconnect_received(NX_TCP_SOCKET *socket)
{

    /* Check for proper disconnected socket.  */
    if(socket != &server_socket)
        error_counter++;
}

static UINT    my_packet_process_6_28(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr)
{
NX_TCP_HEADER   *tcp_header_ptr;

    tcp_header_ptr = (NX_TCP_HEADER*)((packet_ptr -> nx_packet_prepend_ptr) + 20);
    NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);

    /* Check if it is a FIN packet.  */
    if((tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_FIN_BIT) && (tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT))
    {

        fin_counter++;

        /* Delay 1 second.  */
        *operation_ptr = NX_RAMDRIVER_OP_DELAY;
        *delay_ptr = NX_IP_PERIODIC_RATE;

        /* SYN packet has been processed. */ 
        advanced_packet_process_callback = NX_NULL;
    }
    NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);

    return NX_TRUE;
}

static void    my_tcp_packet_receive_6_28(NX_IP *ip_ptr, NX_PACKET *packet_ptr)
{

NX_TCP_HEADER *header_ptr;

    header_ptr = (NX_TCP_HEADER *)packet_ptr -> nx_packet_prepend_ptr;
    NX_CHANGE_ULONG_ENDIAN(header_ptr -> nx_tcp_header_word_3);

    /* Client receives a SYN packet.  */
     if((header_ptr -> nx_tcp_header_word_3 & NX_TCP_FIN_BIT) && (header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT))
    {

        /* It is a SYN packet.  */
        fin_counter++;
        ip_0.nx_ip_tcp_packet_receive = _nx_tcp_packet_receive;

    }

    NX_CHANGE_ULONG_ENDIAN(header_ptr -> nx_tcp_header_word_3);

    _nx_tcp_packet_receive(ip_ptr, packet_ptr);

}

#else

#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void    netx_6_28_application_define(void *first_unused_memory)
#endif
{

    /* Print out test information banner.  */
    printf("NetX Test:   TCP Spec 6.28 Test........................................N/A\n");
    test_control_return(3);

}
#endif