/***************************************************************************/ /* 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 */ /***************************************************************************/ /* 13.17 In a stream of full-sized segments there SHOULD be an ACK for at least every second segment. */ /* Procedure 1. Client connects to server. 2. Server sends a stream of full-sized segments(4 segments) to Client. 3. Check if client sends more than 2 ACK packet to Server. */ /* The check logic of ACK packets is incorrect. NetXDuo implements it by defining NX_TCP_ACK_EVERY_N_PACKETS to 2. */ #include "tx_api.h" #include "nx_api.h" #include "nx_tcp.h" #if defined(__PRODUCT_NETXDUO__) #include "nx_ipv4.h" #else #include "nx_ip.h" #endif #include extern void test_control_return(UINT status); #if 0 /*#ifndef NX_TCP_ACK_EVERY_N_PACKETS*/ #define DEMO_STACK_SIZE 2048 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 ack_counter; static INT is_acked_every_2seg; static UCHAR rcv_buffer[352]; static UINT rcv_length; static UCHAR data_13_17[352]; static ULONG mss_option_13_17; /* 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 *client_socket, UINT port); static void ntest_1_disconnect_received(NX_TCP_SOCKET *client_socket); static void rand_13_17(); 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_13_17(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_13_17_application_define(void *first_unused_memory) #endif { CHAR *pointer; UINT status; /* Setup the working pointer. */ pointer = (CHAR *) first_unused_memory; error_counter = 0; ack_counter = 0; rcv_length = 0; is_acked_every_2seg = NX_FALSE; /* 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", 512, pointer, 512*16); pointer = pointer + 512*16; if(status) error_counter++; /* Create another 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, pointer, 2048, 1); pointer = pointer + 2048; /* Create an 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 1. */ status = nx_arp_enable(&ip_0, (void *) pointer, 1024); pointer = pointer + 1024; /* Enable ARP and supply ARP cache memory for IP Instance 0. */ status += nx_arp_enable(&ip_1, (void *) pointer, 1024); pointer = pointer + 1024; /* 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++; } static void ntest_0_entry(ULONG thread_input) { UINT status; NX_PACKET *my_packet; ULONG bytes_copied; /* Print out test information banner. */ printf("NetX Test: TCP Spec 13.17 Test......................................."); /* 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, 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++; 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++; while(!(nx_tcp_socket_receive(&client_socket, &my_packet, NX_IP_PERIODIC_RATE))) { /* Retrieve data from packet to the receive buffer. */ status = nx_packet_data_retrieve(my_packet, &rcv_buffer[rcv_length], &bytes_copied); if(status) error_counter++; rcv_length += bytes_copied; } /*Check if the content which connected by all the received packets is the data_13_17 sent from the client socket*/ if(memcmp(rcv_buffer, data_13_17, rcv_length)) error_counter++; /* Disconnect this socket. */ status = nx_tcp_socket_disconnect(&client_socket, NX_IP_PERIODIC_RATE); /* Check for error. */ if (status) error_counter++; /* Unbind the socket. */ status = nx_tcp_client_socket_unbind(&client_socket); /* Check for error. */ if(status) error_counter++; status += nx_tcp_socket_delete(&client_socket); /* Check for error. */ if(status) error_counter++; /* Determine if the test was successful. */ if((error_counter ==0) && (is_acked_every_2seg == NX_TRUE) && (ack_counter >= 2)) { printf("SUCCESS!\n"); test_control_return(0); } else { printf("ERROR!\n"); test_control_return(1); } } /* Define the test threads. */ static void ntest_1_entry(ULONG thread_input) { UINT status; ULONG actual_status; NX_PACKET *my_packet; /* 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 for error. */ if(status) error_counter++; /* Check for earlier error. */ if(error_counter) { 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, 200, 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++; /*Let the server socket to check the ACK segment*/ ip_1.nx_ip_tcp_packet_receive = my_tcp_packet_receive_13_17; mss_option_13_17 = server_socket.nx_tcp_socket_connect_mss; /* Allocate a packet. */ status = nx_packet_allocate(&pool_0, &my_packet, 80, NX_IP_PERIODIC_RATE); /* Check status. */ if (status) error_counter++; /* Create a 4*mss_option_13_17 length message randomly. */ rand_13_17(); /* Fill in the packet with data. */ status = nx_packet_data_append(my_packet, data_13_17, 4*mss_option_13_17, &pool_0, NX_IP_PERIODIC_RATE); /* Check status. */ if(status) error_counter++; /* Send the packet out! */ status = nx_tcp_socket_send(&server_socket, my_packet, 5 * NX_IP_PERIODIC_RATE); /* Check for error. */ if (status) error_counter++; /* Disconnect the server socket. */ status = nx_tcp_socket_disconnect(&server_socket, NX_IP_PERIODIC_RATE); /* Check for error. */ if (status) 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_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++; } static void rand_13_17() { UINT flag; UINT j, k = 0; srand((unsigned)time(NULL)); for(j = 0;j < 4*mss_option_13_17;j++) { flag = rand() & 1; if(flag) data_13_17[k++] = 'A' + rand() % 26; else data_13_17[k++] = 'a' + rand() % 26; } } static void my_tcp_packet_receive_13_17(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); /* Server receives a ACK packet. */ if(!(header_ptr -> nx_tcp_header_word_3 & NX_TCP_SYN_BIT) && (header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT) && !(header_ptr -> nx_tcp_header_word_3 & NX_TCP_RST_BIT) && !(header_ptr -> nx_tcp_header_word_3 & NX_TCP_FIN_BIT)) { ack_counter++; if(ack_counter >= (server_socket.nx_tcp_socket_packets_sent >> 1)) is_acked_every_2seg = NX_TRUE; } else if(header_ptr -> nx_tcp_header_word_3 & NX_TCP_FIN_BIT) ip_1.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); } 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++; } #else #ifdef CTEST VOID test_application_define(void *first_unused_memory) #else void netx_13_17_application_define(void *first_unused_memory) #endif { printf("NetX Test: TCP Spec 13.17 Test.......................................N/A\n"); test_control_return(3); } #endif