Re: [lwip-users] Consecutive calls to sendto() and recvfrom() functions

[D.C. van Moolenbroek]

Hello,

On 10/24/2016 13:44, pekez wrote:
> For example, server receives only the last message, while the first three are 
> not received/detected.

This would be consistent with lwIP's ARP_QUEUEING option being set to 
zero: while the lwIP stack is waiting for an ARP reply from the 
(Windows) server, it holds only the last packet being sent. You could 
confirm if this is the problem by changing your client to start by 
sending one packet and then sleeping for a second or so (thus allowing 
the ARP reply to come in), before entering the main loop. Change your 
server accordingly of course.

Regards,
David