Re: [lwip-users] tcp_output doesn't flush

[address@hidden]

Thiscord wrote:
> I'm not sure I understand this. Isn't input processing ballback-based?

Yes it is. In an OS (multithreaded) environment, input processing is 
done in tcpip_thread. This means you must not call lwIP core functions 
(except for some memory functions and the netconn/socket functions) from 
any other thread.

Without an OS, the same rule applies, but it's more or less up to the 
lwIP port how input processing is called. In the end, you just have to 
make sure you don't access variables or functions from multiple threads 
(or interrupts) that aren't meant for this kind of usage.

Simon