[lwip-users] Re: [lwip] sys_mbox_fetch with NULL parameter

[Kieran Mansley]

On Mon, 18 Feb 2002, Mumtaz Ahmad wrote:
> Whats the concept of calling sys_mbox_fetch with NULL parameter
> sys_mbox_fetch(conn->mbox, NULL);

It is for when you're expected a message that has no data attached to it,
or you're not interested in the data.  ie. It is a message being used
purely for synchronisation, not to transfer any real information.

Kieran

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