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RE: [lwip-users] Problem in UDP send


From: Kieran Mansley
Subject: RE: [lwip-users] Problem in UDP send
Date: Tue, 08 Nov 2005 15:59:51 +0000

On Tue, 2005-11-08 at 16:31 +0100, 'ZENG Ming' wrote:
> Hi,
> 
> Anybody my problem following? Thanks.
> 
> Is there any format requirement on the pbuf which will be sent by
> UDP_Send() ?
> 
> As the netconn_send() works properly while the UDP_Send() not........
> :-(
> 
> 
> When using raw API, 
> 
> after called UDP_Send,            lwIP can send ARP to get the dest MAC
> address successfully, 
> 
> but then,  there's no UDP packet actually sent out....

A complete stab in the dark - I've not had much to do with the ARP code
- but are you calling the timers correctly?  Someone else may be able to
define what "correctly" means for ARP.

Kieran





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