Re: [lwip-users] Non-blocking netconn_write?

[Kieran Mansley]

On Wed, 2010-10-13 at 13:43 -0400, Dany Thiffeault wrote:
> Hi,
> 
> 
> I just found out that "netconn_write" is blocking indefinitely, or
> until the operation completes. This is a problem for me. I'm currently
> testing my system to react correctly when an Ethernet disconnection
> occurs. There are safety features I must implement and one of them is
> to stop everything as soon as I detect a disconnection or a
> communication problem over Ethernet.

The problem you'll have with this is that the return code and error
setting for the netconn_write() (and similarly for sockets API built on
top of netconn) will not be correct.  The code has to wait for the write
to be successful to know that it can return success.  If there was an
error it must report it.


Does do a non-blocking write call instead help you?

Kieran