Re: RE : [lwip-users] netconn_connct returning always ERR_OK

[Jonathan Larmour]

Marko Panger wrote:
> Hi again,
>
> I'm still unable to reproduce the proper behavior or the behavior as 
> Frédéric described below. The point is still that netconn_connect() 
> returns ERR_OK even if there is nobody listening on the other side.

What happens behind the scenes is that a message will get posted to the 
tcpip thread's mailbox, and the calling thread should wait on a 
per-connection semaphore (called op_completed) for the tcpip thread to 
indicate that the operation has completed.

Perhaps somehow that semaphore did not have the correct state before the 
call - perhaps it had already been signaled? Or had not been created in 
the port with a value of 0 - in netconn_alloc() in api_msg.c, lwIP 
requests it to be created with a value of 0, but perhaps something doesn't 
do it right in the port?

Jifl
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