Re: [Bluez-devel] Regarding a2recv

[Mayank Batra <mayankbatra@yahoo.co.in>]

Henryk,

> Ah no, but luckily Brad did. However, that wasn't
> the problem. The
> problem was that a2recv didn't correctly fill out
> the transaction
> label. When responding to a request one must use the
> same transaction
> label that the other side used.

I believe that should have been a problem because
interchanding packet_type and message_type does make a
lot of difference to the avdtp packet.

Also, I agree that the init_request() function was not
much thought after while it was being written.
 
> I don't fully understand the logic behind what
> init_request() in
> a2recv.c does to the transaction_label, but it's
> most likely wrong.

Yes, we can simply copy the transation label given by
the source in the response.

> I therefore introduced a function init_response()
> that takes the header
> of the command that was received and creates a
> positive response header.
> init_request() is then used nowhere anymore, so I
> #if 0'd it. I also
> went through a hcidump of the (now working) stream
> setup phase and
> compared it to the AVDTP spec. Most of it looks
> correct now, except for
> Open Stream Response and Start Stream Response,
> which are too long (I'm
> not sure what to do about that as the additional
> byte(s) are reserved in
> the struct open_stream_rsp and struct
> start_stream_rsp for the case of
> an error).
 
> So now I made it to "Sent start stream confirm" but
> not further as the
> audio dongle doesn't seem to start streaming. The
> last three packets I
> see in an hcidump are

Why doesn't the streaming start?
 
> Anyways: I have committed the changed
> transaction_label handling to 
> CVS, so please check that it doesn't break your
> already working 
> devices.

I'll do that.


Mayank

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