Hi, I create a project on stm32f746 nucleo board using LWIP stack (netconn) and FreeRTOS.
The main function of this project is HTTP server. But I have a few problems with this functionality - they are errors of connection and close states of HTTP session.
Have anybody working project of HTTP server (netconn) which can make a good connection without errors, RST, retransmissions? I am needed a code of stability working server because tested a lot of codes, but all of its works not perfect.
Maybe I did a mistake in this code?
Code which I use:
typedef struct struct_sock_t {
struct netconn *conn;
} struct_sock;
struct_sock sock;
void StartDefaultTask(void const * argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN 5 */
//-----------------------------------------------------------
struct netconn *conn;
err_t err;
conn = netconn_new(NETCONN_TCP);
if(conn!=NULL)
{
sock.conn = conn;
err = netconn_bind(conn, NULL, 80);
if(err == ERR_OK)
{
netconn_listen(conn);
sys_thread_new("tcp_thread", tcp_thread, (void*)&sock, DEFAULT_THREAD_STACKSIZE, osPriorityNormal);
}
else
{
netconn_delete(conn);
HAL_GPIO_WritePin(GPIOG, GPIO_PIN_7, GPIO_PIN_SET); // LED RED
}
}
for(;;)
{
osDelay(1);
}
//-----------------------------------------------------------
/* USER CODE END 5 */
}static void tcp_thread(void *arg)
{
err_t recv_err; // Variables for arguments (errors)
err_t err; // Variables for arguments (errors)
struct netconn *conn; // Structure for connection
struct netconn *newconn; // Structure for connection
struct netbuf *inbuf; // Pointer to connection buffer
struct_sock *arg_sock; // Pointer to arguments of task
arg_sock = (struct_sock*) arg;
conn = arg_sock->conn;
u16_t buflen;
char* buf;
struct fs_file file;
for(;;)
{
err = netconn_accept(conn, &newconn);
if (err == ERR_OK)
{
recv_err = netconn_recv(newconn, &inbuf); // Receiving the socket data in inbuf
if (recv_err == ERR_OK)
{
if (netconn_err(newconn) == ERR_OK)
{
netbuf_data(inbuf, (void**)&buf, &buflen);
if ((buflen >=5) && (strncmp(buf, "GET /", 5) == 0))
{
if ((strncmp((char const *)buf,"GET / ",6)==0)||(strncmp((char const *)buf,"GET /index.html",15)==0))
{
fs_open(&file, "/index.html");
netconn_write(newconn, (const unsigned char*)(file.data), (size_t)file.len, NETCONN_NOCOPY);
fs_close(&file);
}
else if (strncmp((char const *)buf,"GET /IMG/Test.png",17)==0)
{
fs_open(&file, "/IMG/Test.png");
netconn_write(newconn, (const unsigned char*)(file.data), (size_t)file.len, NETCONN_NOCOPY);
fs_close(&file);
}
else
{
fs_open(&file, "/404.html");
netconn_write(newconn, (const unsigned char*)(file.data), (size_t)file.len, NETCONN_NOCOPY);
fs_close(&file);
}
}
else
{
osDelay(1);
}
}
else
{
osDelay(1);
}
}
netbuf_delete(inbuf);
netconn_close(newconn);
netconn_delete(newconn);
}
else
{
osDelay(1);
}
}
}
