wlan-station例程中，哪个函数ping TI 网站地址的？CheckLanConnection()函数里，哪里是进行WWW.TI.COM网站IP的ping 操作？

CheckLanConnection()函数里，哪里是进行WWW.TI.COM网站IP的ping 操作？

static long WlanConnect()
{
SlSecParams_t secParams = {0};
long lRetVal = 0;

secParams.Key = (signed char*)SECURITY_KEY;
secParams.KeyLen = strlen(SECURITY_KEY);
secParams.Type = SECURITY_TYPE;

lRetVal = sl_WlanConnect((signed char*)SSID_NAME, strlen(SSID_NAME), 0, &secParams, 0);
ASSERT_ON_ERROR(lRetVal);

// Wait for WLAN Event
while((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus)))
{
// Toggle LEDs to Indicate Connection Progress
GPIO_IF_LedOff(MCU_IP_ALLOC_IND);
MAP_UtilsDelay(800000);
GPIO_IF_LedOn(MCU_IP_ALLOC_IND);
MAP_UtilsDelay(800000);
}

return SUCCESS;

}

checklan是PING 网关的，checkinternet才会去PING TI.com