[Bluez-devel] problems with connect()

[Bluez-devel] problems with connect()

[Christian Hennrich]

Hi,

I'm working on a programm which uses sdp to connect only to PANU, 
creating l2cap and bnep connections. First i start the master, that 
inquires and then connects to the discovered devices (using sdp), that 
are started as slaves. 2 slaves are connected(with one L2cap and one 
Bnep for each slave). this works very fine. then i want to connect the 
third and so on... but there is the problem: the third one can't connect 
   with sdp on or off. the connect(socket) command fails with the error:

Connect failed. Function not implemented(38).

on the slave machine is only one program started. i tried around with 
different dongles, but they are not the problem. what is wrong? has 
anybody some idea? i don't use fork. the sockets that are created(have 
all different numbers(increasing)). is there any limitation of creating 
sockets or something like this.

i think the problem is the master, because on the clients there are only 
2 sockets created. i only have one dongle per pc.

regards Christian



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Re: [Bluez-devel] problems with connect()

[Marcel Holtmann]

Hi Christian,

> I'm working on a programm which uses sdp to connect only to PANU, 
> creating l2cap and bnep connections. First i start the master, that 
> inquires and then connects to the discovered devices (using sdp), that 
> are started as slaves. 2 slaves are connected(with one L2cap and one 
> Bnep for each slave). this works very fine. then i want to connect the 
> third and so on... but there is the problem: the third one can't connect 
>    with sdp on or off. the connect(socket) command fails with the error:
> 
> Connect failed. Function not implemented(38).
> 
> on the slave machine is only one program started. i tried around with 
> different dongles, but they are not the problem. what is wrong? has 
> anybody some idea? i don't use fork. the sockets that are created(have 
> all different numbers(increasing)). is there any limitation of creating 
> sockets or something like this.
> 
> i think the problem is the master, because on the clients there are only 
> 2 sockets created. i only have one dongle per pc.

I don't even understand what your setup is, but have you checked that
role switch is allowed? Check the connection establishment with hcidump.

Regards

Marcel




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Re: [Bluez-devel] problems with connect()

[Christian Hennrich]

Hi,

today i tried to connect more than 2 slaves with pand -c "Addresse of 
master" to one master that is started with pand -s -r GN. the same 
problem occurs, i can't connect more than 2 slaves to one master, the 
third one makes no connection.

is the configuration of pand wrong?

regards christian



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Re: [Bluez-devel] problems with connect()

[Marcel Holtmann]

Hi Christian,

> today i tried to connect more than 2 slaves with pand -c "Addresse of 
> master" to one master that is started with pand -s -r GN. the same 
> problem occurs, i can't connect more than 2 slaves to one master, the 
> third one makes no connection.

you are connecting two master ;) Think again about the master/slave
roles of a Bluetooth device. You must use the role switch. What do
"hciconfig -a" say?

Regards

Marcel




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