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From: | Marco Jakobs |
Subject: | Re: [lwip-users] "netconn_bind" broken for UDP connections in LwIP 1.4.0? |
Date: | Wed, 02 May 2012 21:04:52 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 |
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);
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