[lwip-users] tcpip thread gets stuck when socket is closed

[Stefan Lankes]

Hi,

we use LwIP 1.4.0 as TCP/IP stack for an internal OS project. We have already 
tested some applications, which used the LwIP's Socket API - they work fine. 
However, if the applications close the socket, the tcpip thread gets stuck and 
isn't able to handle incoming messages. To analyze this behavior, we defined 
the macro LWIP_TCPIP_THREAD_ALIVE to print some messages periodically on the 
screen. This stops by closing the socket. 

Do you have any idea, why the Socket API doesn't work correctly?

Cheers,

Stefan