Re: [RTnet-developers] Ethernet IP

[Jan K. <jan...@si...>]

On 2011-02-09 15:58, Glen Wernersbach wrote:
> My current theory is that with RTNET you need a Connect() to do a Send().

That would be clearly a bug. I still can't see how this may happen, though.

> 
> Connect() only works if a socket is not in listen().

You either accept connections or you establish them. I'm not sure if
switching between both stats is even a valid transition.

> 
> Not sure what happens yet if I change the send() to a sentto() if the first
> example

send, sendto, sendmsg, write - they all end up in the same handler
internally. Target address is ignored.

> 
> On Xenomai , Sent() does not error. it just blocks. On RTAI, it produces an
> "oops".

[/me still waiting for a kernel log]

The fact that Xenomai blocks likely means, the socket is in
TCP_ESTABLISHED state. "Just" the communication fails or something else
prevents the RTnet side to consider its TX window open.

Jan

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