[Bluez-users] Broadcast and reassembly

[Bluez-users] Broadcast and reassembly

[Thor Egil Skaug]

I am experiencing some problems when reassembling active broadcast
messages when the
(hci) num_broadcast_retransmissions is set > 0 (at the sender), and with
a decent L2CAP message size,
> 100 bytes.

I constantly get start_fragments and continuing_fragments that are out
of order, and since
the l2cap header is the only way I can know when I am done reading one
message and can expect
another, this is troublesome. I thought the device was supposed to
deliver messages in order?

Has anyone ever implemented this, and hopefully had the same
experiences?

Thanks,

Thor


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Re: [Bluez-users] Broadcast and reassembly

[Marcel Holtmann]

Hi Thor,

> I am experiencing some problems when reassembling active broadcast
> messages when the
> (hci) num_broadcast_retransmissions is set > 0 (at the sender), and with
> a decent L2CAP message size,
> > 100 bytes.
> 
> I constantly get start_fragments and continuing_fragments that are out
> of order, and since
> the l2cap header is the only way I can know when I am done reading one
> message and can expect
> another, this is troublesome. I thought the device was supposed to
> deliver messages in order?
> 
> Has anyone ever implemented this, and hopefully had the same
> experiences?

I never worked with any kind of broadcast and Bluetooth. Some people
tried this before, but nobody came up with a patch or something else.
This can be your job ;)

Regards

Marcel




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