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From: Luiz Augusto von Dentz <>
To: "Pali Rohár" <>
Cc: "" <>
Subject: Re: bluez A2DP socket reliability
Date: Sun, 19 May 2019 11:13:09 +0300
Message-ID: <> (raw)
In-Reply-To: <20190518190618.m7rdkthvpz4agxd2@pali>

Hi Pali,

On Sat, May 18, 2019 at 11:12 PM Pali Rohár <> wrote:
> Hello! How is L2CAP layer of bluetooth socket used for A2DP audio
> transfer configured in bluez? It is reliable with big/infinite
> retransmit count? Or in best-effort manner and some packets may be
> dropped? And it is possible to change between these two modes for
> application which uses bluez DBUS API? I'm asking because some A2DP
> audio codecs are designed to deal with packet loss and for those codecs
> it would be probably better to configure L2CAP socket to unreliable
> mode.

We don't use ERTM with AVDTP, both signaling and transport sockets are
using basic mode which don't support retransmissions, there the
concept of flush timeout which iirc we don't currently it.

Luiz Augusto von Dentz

  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-18 19:06 Pali Rohár
2019-05-19  8:13 ` Luiz Augusto von Dentz [this message]
2019-05-19 12:22   ` Pali Rohár
2019-06-07 13:00     ` Pali Rohár
2019-06-07 15:23       ` Luiz Augusto von Dentz
2019-06-10 10:51         ` Pali Rohár
2019-06-10 12:16           ` Luiz Augusto von Dentz
2019-06-10 16:06           ` Frédéric Danis
2019-06-14  7:16             ` Pali Rohár

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