/***************************************************************************/
/* 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                                            */
/***************************************************************************/

/* 5.22 f SEND call arrives on state CLOSING, TCP MUST return "error: connection closing".  */

/* Procedure
   1. Connection.
   2. Client calls disconnect and sends a FIN packet..
   3. Server interrupts the FIN packet and call disconnect command.
   4. Client receives the FIN packet and becomes CLOSING state.
   5. Client calls send command and checks the status is NX_NOT_CONNECTED.  */

#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 test 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_1_connect_received(NX_TCP_SOCKET *server_socket, UINT port);
static void    ntest_1_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);
static void    my_tcp_packet_receive_5_22(NX_IP *ip_ptr, NX_PACKET *packet_ptr);

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_5_22(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);

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

#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void           netx_5_22_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, 
                     4, 4, 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, 
                     3, 3, 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, 8192);
    pointer = pointer + 8192;

    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, 2);
    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;
    if(status)
        error_counter++;

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

    printf("NetX Test:   TCP Spec 5.22 Test........................................");

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

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_0, &client_socket, "Client Socket", 
                                  NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 200,
                                  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++;

    /* Attempt to connect the socket.  */
    status = nx_tcp_client_socket_connect(&client_socket, IP_ADDRESS(1, 2, 3, 5), 12, 5 * NX_IP_PERIODIC_RATE);

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

    /* Let driver delay the FIN packet. */
    advanced_packet_process_callback = my_packet_process_5_22;

    /*Let the client socket to check the FIN segment*/
    ip_0.nx_ip_tcp_packet_receive = my_tcp_packet_receive_5_22;

    /* Disconnect the client socket.  */
    status = nx_tcp_socket_disconnect(&client_socket, NX_NO_WAIT);

    /* Resume the thread. */
    tx_thread_resume(&ntest_1);

    if (client_socket.nx_tcp_socket_state == NX_TCP_CLOSING)
    {

        status = nx_packet_allocate(&pool_0, &my_packet, NX_TCP_PACKET, NX_IP_PERIODIC_RATE);

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

        /* Fill in the packet with data.     */
        status = nx_packet_data_append(my_packet, "01012345678920123456", 20, &pool_0, NX_NO_WAIT);

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

        /* Send the packet out!  */
        status = nx_tcp_socket_send(&client_socket, my_packet, NX_IP_PERIODIC_RATE);

        /* Check status.  */
        if(status != NX_NOT_CONNECTED)
            error_counter++;
    }
    else
        error_counter++;
}

static void    ntest_1_entry(ULONG thread_input)
{
UINT       status;
ULONG      actual_status;

    /* Ensure the IP instance has been initialized.  */
    status = nx_ip_status_check(&ip_1, NX_IP_INITIALIZE_DONE, &actual_status, NX_IP_PERIODIC_RATE);

    /* Check status...  */
    if(status != NX_SUCCESS)
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_1, &server_socket, "Server Socket", 
                                  NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 100,
                                  NX_NULL, ntest_1_disconnect_received);

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

    /* Setup this thread to listen.  */
    status = nx_tcp_server_socket_listen(&ip_1, 12, &server_socket, 5, ntest_1_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++;

    /*n Suspend the ntest_1 thread. */
    tx_thread_suspend(&ntest_1);

    /* Disconnect the server socket.  */
    status = nx_tcp_socket_disconnect(&server_socket, NX_IP_PERIODIC_RATE);  

    /* Unaccept the 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_1, 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++;

    /* 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_1_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_1_disconnect_received(NX_TCP_SOCKET *socket)
{

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

static UINT    my_packet_process_5_22(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 the packet. */
        *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_5_22(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_5_22_application_define(void *first_unused_memory)
#endif
{

    /* Print out test information banner.  */
    printf("NetX Test:   TCP Spec 5.22 Test........................................N/A\n");
    test_control_return(3);

}
#endif