RE : [lwip-users] netconn_connct returning always ERR_OK

[Frédéric BERNON]

Which lwIP release do you use ?

 
  
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Frédéric BERNON 
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-----Message d'origine-----
De : address@hidden [mailto:address@hidden De la part de Marko Panger
Envoyé : mardi 15 janvier 2008 13:12
À : Mailing list for lwIP users
Objet : [lwip-users] netconn_connct returning always ERR_OK


Hi all,

I'm writing a client app. which connects to a remote server. I'm running 
lwip under an rtos with

#define NO_SYS 0

I'm using the netconn sequential api and there is something about the 
netconn_connect() call which is confusing me.
If I try to connect to a non-existing server (nobody is listening on 
that ip on that port) the call still returns with ERR_OK.

Shouldn't be some other error code ?

In general how do I know that the other side has received the data send 
by the client with netconn_write() ?

Please find attached the code snipped below for reference.

Thanks in advance for your help and comments,
marko

    IP4_ADDR(&local_ip, 192, 168, 3, 2);
    IP4_ADDR(&net_mask, 255, 255, 255, 0);
    IP4_ADDR(&gateway, 192, 168, 3, 1);
    IP4_ADDR(&server_ip, 192, 168, 3, 1);
   
    netif_add(&slip_if, &local_ip, &net_mask, &gateway, NULL, 
slipif_init, tcpip_input);   
    netif_set_default(&slip_if);
    netif_set_up(&slip_if);
   
   
    /* Connect to server */
    conn = netconn_new_with_proto_and_callback(NETCONN_TCP, 6, 
server_conn_clb);   
   
    while(netconn_connect(conn, &server_ip, RVA_PORT) != ERR_OK)
        TSK_Sleep(100);

    while(1) {
        while(!(buf = netconn_recv(conn)))
            TSK_Sleep(10);
       
        netbuf_data(buf, (void*)&p, &len);
       
        payload_len = *p++;       
        /* Ping */
        switch(*p) {
            case 6:
                netconn_write(conn, p-1, len, true);
                netbuf_delete(buf);
                break;
        }
       
    }




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