.net 网络调试助手源码_DSP：6678开发板NDK网口通信完整实现（附源码）

Description	

/****助手IP***/
char *HostName    = "tidsp";
char *LocalIPAddr = "169.254.198.113";
char *LocalIPMask = "255.255.0.0";    // Not used when using DHCP
char *GatewayIP   = "169.254.1.1";    // Not used when using DHCP
char *DomainName  = "demo.net";         // Not used when using DHCP
char *DNSServer   = "0.0.0.0";          // Used when set to anything but zero

    // If the IP address is specified, manually configure IP and Gateway
//#if defined(_SCBP6618X_) || defined(_EVMTCI6614_) || defined(DEVICE_K2H) || defined(DEVICE_K2K)
    /* SCBP6618x, EVMTCI6614, EVMK2H, EVMK2K always uses DHCP */
//    if (0)
//#else
//    if (!platform_get_switch_state(1))
//#endif
    if(1)
    {
    	printf("IP address is specified.n");
        CI_IPNET NA;
        CI_ROUTE RT;
        IPN      IPTmp;

C66xx_0: GEL Output: Setup_Memory_Map...
C66xx_0: GEL Output: Setup_Memory_Map... Done.
C66xx_0: GEL Output: 
Connecting Target...
C66xx_0: GEL Output: DSP core #0
C66xx_0: GEL Output: C6678L GEL file Ver is 2.005 
C66xx_0: GEL Output: Global Default Setup...
C66xx_0: GEL Output: Setup Cache... 
C66xx_0: GEL Output: L1P = 32K   
C66xx_0: GEL Output: L1D = 32K   
C66xx_0: GEL Output: L2 = ALL SRAM   
C66xx_0: GEL Output: Setup Cache... Done.
C66xx_0: GEL Output: Main PLL (PLL1) Setup ... 
C66xx_0: GEL Output: PLL in Bypass ... 
C66xx_0: GEL Output: PLL1 Setup for DSP @ 1000.0 MHz.
C66xx_0: GEL Output:            SYSCLK2 = 333.3333 MHz, SYSCLK5 = 200.0 MHz.
C66xx_0: GEL Output:            SYSCLK8 = 15.625 MHz.
C66xx_0: GEL Output: PLL1 Setup... Done.
C66xx_0: GEL Output: Power on all PSC modules and DSP domains... 
C66xx_0: GEL Output: Security Accelerator disabled!
C66xx_0: GEL Output: Power on all PSC modules and DSP domains... Done.
C66xx_0: GEL Output: PA PLL (PLL3) Setup ... 
C66xx_0: GEL Output: PA PLL Setup... Done.
C66xx_0: GEL Output: DDR3 PLL (PLL2) Setup ... 
C66xx_0: GEL Output: DDR3 PLL Setup... Done.
C66xx_0: GEL Output: DDR begin (1333 auto)
C66xx_0: GEL Output: XMC Setup ... Done 
C66xx_0: GEL Output: 
DDR3 initialization is complete.
C66xx_0: GEL Output: DDR done
C66xx_0: GEL Output: DDR3 memory test... Started
C66xx_0: GEL Output: DDR3 memory test... Passed
C66xx_0: GEL Output: PLL and DDR Initialization completed(0) ...
C66xx_0: GEL Output: configSGMIISerdes Setup... Begin
C66xx_0: GEL Output: 
SGMII SERDES has been configured.
C66xx_0: GEL Output: Enabling EDC ...
C66xx_0: GEL Output: L1P error detection logic is enabled.
C66xx_0: GEL Output: L2 error detection/correction logic is enabled.
C66xx_0: GEL Output: MSMC error detection/correction logic is enabled.
C66xx_0: GEL Output: Enabling EDC ...Done 
C66xx_0: GEL Output: Configuring CPSW ...
C66xx_0: GEL Output: Configuring CPSW ...Done 
C66xx_0: GEL Output: Global Default Setup... Done.

C66xx_0: GEL Output: Invalidate All Cache...
C66xx_0: GEL Output: Invalidate All Cache... Done.
C66xx_0: GEL Output: GEL Reset...
C66xx_0: GEL Output: GEL Reset... Done.
C66xx_0: GEL Output: Disable all EDMA3 interrupts and events.

[C66xx_0] QMSS successfully initialized 
CPPI successfully initialized 
PA successfully initialized 
 
TCP/IP Stack 'Hello World!' Application
 
 
TCP/IP Stack 'Hello World!' Application
 
PASS successfully initialized 
Ethernet subsystem successfully initialized 
Ethernet eventId : 48 and vectId (Interrupt) : 7 
Registration of the EMAC Successful, waiting for link up ..
Network Added: If-1:169.254.198.113

void EVM_init()

int main()
{
 /* Start the BIOS 6 Scheduler */
 BIOS_start ();
}

int StackTest()

static void NetworkOpen()
{
    // Create our local server
    hHello = DaemonNew( SOCK_DGRAM, 0, 7, dtask_udp_hello,
                       OS_TASKPRINORM, OS_TASKSTKNORM, 0, 1 );
}

/*
 * helloWorld_bios6.c
 *
 * TCP/IP Stack 'Hello World!' Example ported to use BIOS6 OS.
 *
 * Copyright (C) 2007, 2011 Texas Instruments Incorporated - http://www.ti.com/
 * 
 * 
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the   
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/
 
//--------------------------------------------------------------------------
// IP Stack 'Hello World!' Example
//
// This is a skeleton application, intended to provide application  
// programmers with a basic Stack setup, to which they can start 
// adding their code.
//
// To test it as is, use with helloWorld.exe from winapps directory
//
 
#include <stdio.h>
#include <ti/ndk/inc/netmain.h>
 
/* BIOS6 include */
#include <ti/sysbios/BIOS.h>
 
/* Platform utilities include */
#include "ti/platform/platform.h"
#include "ti/platform/resource_mgr.h"
 
/* Platform Information - we will read it form the Platform Library */
platform_info  gPlatformInfo;
 
 
//---------------------------------------------------------------------------
// Title String
//
char *VerStr = "nTCP/IP Stack 'Hello World!' Applicationnn";
// Our NETCTRL callback functions
static void   NetworkOpen();
static void   NetworkClose();
static void   NetworkIPAddr( IPN IPAddr, uint IfIdx, uint fAdd );
 
// Fun reporting function
static void   ServiceReport( uint Item, uint Status, uint Report, HANDLE hCfgEntry );
 
// External references
extern int dtask_udp_hello();
 
//---------------------------------------------------------------------------
// Configuration
//
char *HostName    = "tidsp";
char *LocalIPAddr = "169.254.198.113";
char *LocalIPMask = "255.255.0.0";    // Not used when using DHCP
char *GatewayIP   = "169.254.1.1";    // Not used when using DHCP
char *DomainName  = "demo.net";         // Not used when using DHCP
char *DNSServer   = "0.0.0.0";          // Used when set to anything but zero
// Simulator EMAC Switch does not handle ALE_LEARN mode, so please configure the
// MAC address of the PC where you want to launch the webpages and initiate PING to NDK */
 
Uint8 clientMACAddress [6] = {0x5C, 0x26, 0x0A, 0x69, 0x44, 0x0B}; /* MAC address for my PC */
 
/*************************************************************************
 *  @b EVM_init()
 * 
 *  @n
 *     
 *  Initializes the platform hardware. This routine is configured to start in 
 *   the evm.cfg configuration file. It is the first routine that BIOS 
 *   calls and is executed before Main is called. If you are debugging within
 *  CCS the default option in your target configuration file may be to execute 
 *  all code up until Main as the image loads. To debug this you should disable
 *  that option. 
 *
 *  @param[in]  None
 * 
 *  @retval
 *      None
 ************************************************************************/
void EVM_init()
{
 platform_init_flags   sFlags;
 platform_init_config  sConfig;
 /* Status of the call to initialize the platform */
 int32_t pform_status;
 
 /* 
  * You can choose what to initialize on the platform by setting the following 
  * flags. Things like the DDR, PLL, etc should have been set by the boot loader.
 */
 memset( (void *) &sFlags,  0, sizeof(platform_init_flags));
 memset( (void *) &sConfig, 0, sizeof(platform_init_config));
 
    sFlags.pll  = 0; /* PLLs for clocking    */
    sFlags.ddr  = 0;     /* External memory    */
    sFlags.tcsl = 1; /* Time stamp counter   */
#ifdef _SCBP6618X_
    sFlags.phy  = 0; /* Ethernet       */
#else
    sFlags.phy  = 1; /* Ethernet       */
#endif
    sFlags.ecc  = 0; /* Memory ECC       */
 
    sConfig.pllm = 0;  /* Use libraries default clock divisor */
 
 pform_status = platform_init(&sFlags, &sConfig);
 
 /* If we initialized the platform okay */
 if (pform_status != Platform_EOK) {
   /* Initialization of the platform failed... die */
   while (1) {
     (void) platform_led(1, PLATFORM_LED_ON, PLATFORM_USER_LED_CLASS);
     (void) platform_delay(50000);
     (void) platform_led(1, PLATFORM_LED_OFF, PLATFORM_USER_LED_CLASS);
     (void) platform_delay(50000);
   }
 }
 
}
 
//---------------------------------------------------------------------
// Main Entry Point
//---------------------------------------------------------------------
int main()
{
 /* Start the BIOS 6 Scheduler */
 BIOS_start ();
}
 
//
// Main Thread
//
int StackTest()
{
    int             rc;
    int        i;
    HANDLE          hCfg;
    QMSS_CFG_T      qmss_cfg;
    CPPI_CFG_T      cppi_cfg;
 
 /* Get information about the platform so we can use it in various places */
 memset( (void *) &gPlatformInfo, 0, sizeof(platform_info));
 (void) platform_get_info(&gPlatformInfo);
 
 (void) platform_uart_init();
 (void) platform_uart_set_baudrate(115200);
 (void) platform_write_configure(PLATFORM_WRITE_ALL);
 
 /* Clear the state of the User LEDs to OFF */
 for (i=0; i < gPlatformInfo.led[PLATFORM_USER_LED_CLASS].count; i++) {
   (void) platform_led(i, PLATFORM_LED_OFF, PLATFORM_USER_LED_CLASS);
 }
 
    /* Initialize the components required to run this application:
     *  (1) QMSS
     *  (2) CPPI
     *  (3) Packet Accelerator
     */
    /* Initialize QMSS */
    if (platform_get_coreid() == 0)
    {
        qmss_cfg.master_core        = 1;
    }
    else
    {
        qmss_cfg.master_core        = 0;
    }
    qmss_cfg.max_num_desc       = MAX_NUM_DESC;
    qmss_cfg.desc_size          = MAX_DESC_SIZE;
    qmss_cfg.mem_region         = Qmss_MemRegion_MEMORY_REGION0;
    if (res_mgr_init_qmss (&qmss_cfg) != 0)
    {
        platform_write ("Failed to initialize the QMSS subsystem n");
        goto main_exit;
    }
    else
    {
     platform_write ("QMSS successfully initialized n");
    }
 
    /* Initialize CPPI */
    if (platform_get_coreid() == 0)
    {
        cppi_cfg.master_core        = 1;
    }
    else
    {
        cppi_cfg.master_core        = 0;
    }
    cppi_cfg.dma_num            = Cppi_CpDma_PASS_CPDMA;
    cppi_cfg.num_tx_queues      = NUM_PA_TX_QUEUES;
    cppi_cfg.num_rx_channels    = NUM_PA_RX_CHANNELS;
    if (res_mgr_init_cppi (&cppi_cfg) != 0)
    {
        platform_write ("Failed to initialize CPPI subsystem n");
        goto main_exit;
    }
    else
    {
     platform_write ("CPPI successfully initialized n");
    }
 
 
    if (res_mgr_init_pass()!= 0) {
        platform_write ("Failed to initialize the Packet Accelerator n");
        goto main_exit;
    }
    else
    {
     platform_write ("PA successfully initialized n");
    }
 
    //
    // THIS MUST BE THE ABSOLUTE FIRST THING DONE IN AN APPLICATION before
    //  using the stack!!
    //
    rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_INTERRUPT );
    if( rc )
    {
        platform_write("NC_SystemOpen Failed (%d)n",rc);
        for(;;);
    }
 
    // Print out our banner
    platform_write(VerStr);
 
    //
    // Create and build the system configuration from scratch.
    //
 
    // Create a new configuration
    hCfg = CfgNew();
    if( !hCfg )
    {
        platform_write("Unable to create configurationn");
        goto main_exit;
    }
 
    //
    // THIS MUST BE THE ABSOLUTE FIRST THING DONE IN AN APPLICATION!!
    //
    rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_INTERRUPT );
    if( rc )
    {
        printf("NC_SystemOpen Failed (%d)n",rc);
        for(;;);
    }
 
    // Print out our banner
    printf(VerStr);
 
    //
    // Create and build the system configuration from scratch.
    //
 
    // Create a new configuration
    hCfg = CfgNew();
    if( !hCfg )
    {
        printf("Unable to create configurationn");
        goto main_exit;
    }
 
    // We better validate the length of the supplied names
    if( strlen( DomainName ) >= CFG_DOMAIN_MAX ||
        strlen( HostName ) >= CFG_HOSTNAME_MAX )
    {
        printf("Names too longn");
        goto main_exit;
    }
 
    // Add our global hostname to hCfg (to be claimed in all connected domains)
    CfgAddEntry( hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_HOSTNAME, 0,
                 strlen(HostName), (UINT8 *)HostName, 0 );
 
    // If the IP address is specified, manually configure IP and Gateway
//#if defined(_SCBP6618X_) || defined(_EVMTCI6614_) || defined(DEVICE_K2H) || defined(DEVICE_K2K)
    /* SCBP6618x, EVMTCI6614, EVMK2H, EVMK2K always uses DHCP */
 //   if (0)
//#else
 //   if (!platform_get_switch_state(1))
//#endif
    if(1)
    {
        CI_IPNET NA;
        CI_ROUTE RT;
        IPN      IPTmp;
 
        // Setup manual IP address
        bzero( &NA, sizeof(NA) );
        NA.IPAddr  = inet_addr(LocalIPAddr);
        NA.IPMask  = inet_addr(LocalIPMask);
        strcpy( NA.Domain, DomainName );
        NA.NetType = 0;
 
        // Add the address to interface 1
        CfgAddEntry( hCfg, CFGTAG_IPNET, 1, 0,
                           sizeof(CI_IPNET), (UINT8 *)&NA, 0 );
 
        // Add the default gateway. Since it is the default, the
        // destination address and mask are both zero (we go ahead
        // and show the assignment for clarity).
        bzero( &RT, sizeof(RT) );
        RT.IPDestAddr = 0;
        RT.IPDestMask = 0;
        RT.IPGateAddr = inet_addr(GatewayIP);
 
        // Add the route
        CfgAddEntry( hCfg, CFGTAG_ROUTE, 0, 0,
                           sizeof(CI_ROUTE), (UINT8 *)&RT, 0 );
 
        // Manually add the DNS server when specified
        IPTmp = inet_addr(DNSServer);
        if( IPTmp )
            CfgAddEntry( hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_DOMAINNAMESERVER,
                         0, sizeof(IPTmp), (UINT8 *)&IPTmp, 0 );
    }
    // Else we specify DHCP
    else
    {
        CI_SERVICE_DHCPC dhcpc;
 
        // Specify DHCP Service on IF-1
        bzero( &dhcpc, sizeof(dhcpc) );
        dhcpc.cisargs.Mode   = CIS_FLG_IFIDXVALID;
        dhcpc.cisargs.IfIdx  = 1;
        dhcpc.cisargs.pCbSrv = &ServiceReport;
        CfgAddEntry( hCfg, CFGTAG_SERVICE, CFGITEM_SERVICE_DHCPCLIENT, 0,
                     sizeof(dhcpc), (UINT8 *)&dhcpc, 0 );
    }
 
    //
    // Configure IPStack/OS Options
    //
 
    // We don't want to see debug messages less than WARNINGS
    rc = DBG_WARN;
    CfgAddEntry( hCfg, CFGTAG_OS, CFGITEM_OS_DBGPRINTLEVEL,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );
    //
    // This code sets up the TCP and UDP buffer sizes
    // (Note 8192 is actually the default. This code is here to
    // illustrate how the buffer and limit sizes are configured.)
    //
    // UDP Receive limit
    rc = 8192;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKUDPRXLIMIT,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );
    //
    // Boot the system using this configuration
    //
    // We keep booting until the function returns 0. This allows
    // us to have a "reboot" command.
    //
    do
    {
        rc = NC_NetStart( hCfg, NetworkOpen, NetworkClose, NetworkIPAddr );
    } while( rc > 0 );
    // Delete Configuration
    CfgFree( hCfg );
    // Close the OS
main_exit:
    NC_SystemClose();
    return(0);
}
//
// System Task Code [ Server Daemon Servers ]
//
static HANDLE hHello=0;
//
// NetworkOpen
//
// This function is called after the configuration has booted
//
static void NetworkOpen()
{
    // Create our local server
    hHello = DaemonNew( SOCK_DGRAM, 0, 7, dtask_udp_hello,
                       OS_TASKPRINORM, OS_TASKSTKNORM, 0, 1 );
}
//
// NetworkClose
//
// This function is called when the network is shutting down,
// or when it no longer has any IP addresses assigned to it.
//
static void NetworkClose()
{
    DaemonFree( hHello );
}
//
// NetworkIPAddr
//
// This function is called whenever an IP address binding is
// added or removed from the system.
//
static void NetworkIPAddr( IPN IPAddr, uint IfIdx, uint fAdd )
{
    IPN IPTmp;
    if( fAdd )
        printf("Network Added: ");
    else
        printf("Network Removed: ");
    // Print a message
    IPTmp = ntohl( IPAddr );
    printf("If-%d:%d.%d.%d.%dn", IfIdx,
            (UINT8)(IPTmp>>24)&0xFF, (UINT8)(IPTmp>>16)&0xFF,
            (UINT8)(IPTmp>>8)&0xFF, (UINT8)IPTmp&0xFF );
}
//
// Service Status Reports
//
// Here's a quick example of using service status updates
//
static char *TaskName[]  = { "Telnet","HTTP","NAT","DHCPS","DHCPC","DNS" };
static char *ReportStr[] = { "","Running","Updated","Complete","Fault" };
static char *StatusStr[] = { "Disabled","Waiting","IPTerm","Failed","Enabled" };
static void ServiceReport( uint Item, uint Status, uint Report, HANDLE h )
{
    printf( "Service Status: %-9s: %-9s: %-9s: %03dn",
            TaskName[Item-1], StatusStr[Status],
            ReportStr[Report/256], Report&0xFF );
 
    //
    // Example of adding to the DHCP configuration space
    //
    // When using the DHCP client, the client has full control over access
    // to the first 256 entries in the CFGTAG_SYSINFO space.
    //
    // Note that the DHCP client will erase all CFGTAG_SYSINFO tags except
    // CFGITEM_DHCP_HOSTNAME. If the application needs to keep manual
    // entries in the DHCP tag range, then the code to maintain them should
    // be placed here.
    //
    // Here, we want to manually add a DNS server to the configuration, but
    // we can only do it once DHCP has finished its programming.
    //
    if( Item == CFGITEM_SERVICE_DHCPCLIENT &&
        Status == CIS_SRV_STATUS_ENABLED &&
        (Report == (NETTOOLS_STAT_RUNNING|DHCPCODE_IPADD) ||
         Report == (NETTOOLS_STAT_RUNNING|DHCPCODE_IPRENEW)) )
    {
        IPN IPTmp;
 
        // Manually add the DNS server when specified
        IPTmp = inet_addr(DNSServer);
        if( IPTmp )
            CfgAddEntry( 0, CFGTAG_SYSINFO, CFGITEM_DHCP_DOMAINNAMESERVER,
                         0, sizeof(IPTmp), (UINT8 *)&IPTmp, 0 );
    }
}
 
 

/*
 * udpHello.c
 *
 * This program implements a UDP echo server, which echos back any
 * input it receives.
 *
 * Copyright (C) 2007 Texas Instruments Incorporated - http://www.ti.com/ 
 * 
 * 
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the   
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/
 
#include <ti/ndk/inc/netmain.h>
 
//
// dtask_udp_hello() - UDP Echo Server Daemon Function
// (SOCK_DGRAM, port 7)
//
// Returns "1" if socket 's' is still open, and "0" if its been closed
//
int dtask_udp_hello( SOCKET s, UINT32 unused )
{
    struct sockaddr_in sin1;
    struct timeval     to;
    int                i,tmp;
    char               *pBuf;
    HANDLE             hBuffer;
 
    (void)unused;
 
    // Configure our socket timeout to be 3 seconds
    to.tv_sec  = 3;
    to.tv_usec = 0;
    setsockopt( s, SOL_SOCKET, SO_SNDTIMEO, &to, sizeof( to ) );
    setsockopt( s, SOL_SOCKET, SO_RCVTIMEO, &to, sizeof( to ) );
 
    for(;;)
    {
        tmp = sizeof( sin1 );
        i = (int)recvncfrom( s, (void **)&pBuf, 0, (PSA)&sin1, &tmp, &hBuffer );
 
        // Spit any data back out
        if( i >= 0 )
        {
            sendto( s, pBuf, i, 0, (PSA)&sin1, sizeof(sin1) );
            recvncfree( hBuffer );
        }
        else
            break;
    }
 
    // Since the socket is still open, return "1"
    // (we need to leave UDP sockets open)
    return(1);    
}