Re: [lwip-users] How to force-close a netconn from the server side?

[address@hidden]

Freddie Chopin wrote:
> Would any additions to the netconn API be accepted

Yes.

> or maybe the plan
> is really to add a function or two to sockets to allow netconn-like
> interface (with no copying) and then netconn would be deprecated?

That's the longterm plan only...

> [..] It works only if I
> introduce a small delay between close+delete and opening of new listen
> connections (I'm using a multithreading system).[..]
> With this code the PCBs are only sometimes stuck in TIME_WAIT state for
> ~2 minutes. But if I remove the "sleepFor()" call, then there is a PCB
> (maybe more than one) stuck in FIN_WAIT_1 forever.

That's not strange, and has nothing to do with the tcpip-thread running 
but with receiving the remote host's FIN+ACK.
FIN_WAIT_1 says that our FIN has been sent while TIME_WAIT says the 
FIN+ACK has been received (and ACKed) so the
connection is fully closed.

Just don't try to fix it like that, use SO_REUSE instead.

Simon