[lwip-users] Aw: Re:multithread netconn / udp echo on two differentthreads and ports

[robert . braatz]

Hi,

I think the stack size is not the problem (I reserved 8 KB) – the example 
consumes so much stack because there is a big copy buffer on the stack. 
>From Simons answer I think there is maybe a fault in my sys_arch layer with 
>the semaphore mechanism and api messages are not protected. I’ll debug this.

Robert

> LwIP netconn API is thread safety, I think. I have many waiting UDP / TCP
> connections in separated thread and without problem.
> Do you have this sample "echo server" from
> http://cvs.savannah.gnu.org/viewvc/contrib/apps/udpecho/udpecho.c?revision=1
> .7&root=lwip&view=markup
> This example required a quite big stack size ( cca > 4200 Bytes for each
> task ) by my mind.
> Do you have sufficient stack size ?
> Martin Persich


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