Re: [lwip-users] How to avoid lwIP v2.1.2 udp send stuck when data is coming in faster than it is going out

[Sergey A. Borshch]

On 9/15/22 16:48, Lan Yang wrote:
> Here's what you need help with:
> Q1: Is it the best way to solve issue1 by adding a mutex?Yes, it's 
correct and quite strait forward solution.> Q2: Regarding issue 2, our 
team guessed that issue 2 was caused by the
> fact that the speed at which the application layer stuffed UDP with data
> was faster than the speed at which UDP forwarded data. Is our guess
> correct? How to verify and adjust? Do you have any suggestions?Yes, 
seems like your guess is correct. Try to pause process in this case for 
some time to let LwIP to send out some data and check if next call after 
pause succeeded.

> Q3: We define
> The operation of this function udp_client_send() routine? Is there a
> better definition for Demo?
> Q4: What do lwip experts usually do to avoid such a situation where data
> is coming in faster than it is going out?Just drop extra data. UDP 
not guarantees datagramm delivery anyway.

--
С уважением,
 Сергей Борщ
  SB ELDI SIA