Hi
I'm using netconn api library to make tcp server and client on stm32f746
Tcp server works properly but client can not connect to server and it returns error code -4 (err1) which means routing problem
I don't understand the reason
here is my code
struct netconn *conn, *newconn;
err_t err, recv_err, err1;
struct netbuf *buf, *mybuf;
ip_addr_t DestIPaddr;
ip_addr_t LocalIPaddr;
ip_addr_t ipaddr_server;
ip_addr_t ipaddr_client;
static unsigned short port;
char *data;
/* Create a new TCP connection handle */
conn = netconn_new(NETCONN_TCP); // create new TCP connection
if (conn!= NULL)
{
IP4_ADDR(&DestIPaddr,192,168,1,31);
err1 = netconn_connect(conn, &DestIPaddr,8234);
printf("%d",err1);
netconn_bind(conn, &ipaddr_client, 3262);
if (err1 == ERR_OK)
{
/* Put the connection into LISTEN state */\
printf("Hooray! %d",configUSE_TIME_SLICING);
while(1)
{
mybuf = netbuf_new();
data = netbuf_alloc(mybuf, 10);
/* create some arbitrary data */
for(int i = 0; i < 10; i++)
{
data[i] = i;
}
/* send the arbitrary data */
recv_err = netconn_recv(conn, &buf);
if (recv_err == ERR_OK)
{
data[0] ++;
}
err = netconn_send(conn, mybuf);
if( err == ERR_OK)
{
printf("send successfully");
}
netbuf_delete(mybuf);
osDelay(1);
}
}
}
