Re: [lwip-users] calling tcp_write outside tcp_accept callback

[Vojtech Janasek]

Thank you for your information, is there some simple way how to do this? 
I tried to wait for new data in callback tcp_accept() - it isn't perfect 
but it seems to work.

address@hidden napsal(a):
> Vojtech Janasek wrote:
> > Can I call tcp_write function outside callback functions tcp_accept()
> > and tcp_poll()? (keeping in mind it isn't reentrant)
> >   
> As far as I can think, you can call tcp_write virtually from everywhere, 
> not only from one of the callback.
> However, there is one limitation: in multithreading environments, all 
> the raw API functions may only be called from the tcpip_thread since the 
> raw API is not locked against concurrent access. From your description 
> it seems you are doing exactly this, which would explain why the stack 
> locks up at some point.
>
> Simon
>
>
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