[lwip-users] arter getting error sys timeouts in the funtion sys_arch_timeouts()

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Hi,

 

    I'm using lwip cvs update, My software and hardware is at91sam7x256 + ucos + lwip,

I'm committed to the stability of the test lwip. my target board connects to company's LAN, so it can recieve a lot of enthernet data. sometime, when lwip get the timeouts error by the funtion sys_arch_timeouts(), I return NULL, and then, lwip doesn't work well, it debugs out information

 

    memp_malloc: out of memory in pool PBUF_POOL

 

forever!

 

    I want to known when the funtion sys_arch_timeouts() gets the error timeouts, what can be return?

 

 

    My second question is in the funtion netconn_recv(). I don't use socket, so when I want to receive data, netconn_recv() is been called. In the funtion, first it asks a buf, then waits for data coming forever. sometimes, I want to close the connect in another task, but the funtion netconn_recv() doesn't return, and the buf doesn't free forever!

 

Thanks.