Re: [lwip-users] "netconn_bind" broken for UDP connections in LwIP 1.4.0?

[Marco Jakobs]

Hi Sylvain,

this looks like socket interface ... but i'm using NETCONN ...


Am 02.05.2012 18:15, schrieb Sylvain Rochet:
> Maybe this is pretty old for 1.4.0, but it may help you.
>
> I wrote several years ago a NTP server, NTP uses the same port for source
> and destination in most cases, which is 123/UDP.
>
> This is what I used:
>
>
> Bind, so use source port = 123:
>
> udp_bind(n->udp_socket, IP_ADDR_ANY, 123);
> udp_recv(n->udp_socket, ntp_net_recv_callback, n);
>
>
> Send to using port 123 as destination, on the same socket, so source and
> destination port = 123:
>
> udp_sendto(n->udp_socket, pkt_buf, ntpserver, 123);