LwIP Server
I am using a STM32H743 processor and have ST's LwIP stack running correctly. At least to the point were I can use Hercules as a client and connect to the Nucleo and send a small block of data (24 bytes) to the Nucleo. I have set breakpoints in the code and see the packet making its way to the application. This is the standard ST implementation:
void StartDefaultTask(void *argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN 5 */
/* ETH_CODE: Adding lwiperf to measure TCP/IP performance.
* iperf 2.0.6 (or older?) is required for the tests. Newer iperf2 versions
* might work without data check, but they send different headers.
* iperf3 is not compatible at all.
* Adding lwiperf.c file to the project is necessary.
* The default include path should already contain
* 'lwip/apps/lwiperf.h'
*/
LOCK_TCPIP_CORE();
lwiperf_start_tcp_server_default(NULL, NULL);
ip4_addr_t remote_addr;
IP4_ADDR(&remote_addr, 192, 168, 1, 11);
lwiperf_start_tcp_client_default(&remote_addr, NULL, NULL);
UNLOCK_TCPIP_CORE();
/* Infinite loop */
for(;;)
{
osDelay(1000);
}
/* USER CODE END 5 */
}
The problem is I do not know how to access this data. That is, I have a CommTask in which I would like to handle the incoming data from the client. I not sure how to do this? Do I use: 'recv(s,mem,len,flags)? If so, where do I get the 's' parameter? If not, which call do I use: recvmsg; or recvfrom?
Thanks,
Gil