2007-05-09 15:59:46

by Pierre-Yves Paulus

[permalink] [raw]
Subject: [Bluez-devel] "ACL Connection Already Exists" while using only DBus calls

Hello,

I've a system with several dongles, which are driven by a custom app,
using only DBus calls to hcid.

Using dongle hci4, I connected to a device, performed some operations,
and disconnected:

2007-05-09 17:11:23,997 hci4 < HCI Command: Disconnect (0x01|0x0006) plen 3
2007-05-09 17:11:23,997 hci4 handle 11 reason 0x13
2007-05-09 17:11:23,997 hci4 Reason: Remote User Terminated Connection
2007-05-09 17:11:23,999 hci4 > HCI Event: Command Status (0x0f) plen 4
2007-05-09 17:11:23,999 hci4 Disconnect (0x01|0x0006) status 0x00
ncmd 1
2007-05-09 17:11:24,031 hci4 > HCI Event: Disconn Complete (0x05) plen 4
2007-05-09 17:11:24,031 hci4 status 0x00 handle 11 reason 0x16
2007-05-09 17:11:24,032 hci4 Reason: Connection Terminated by Local
Host

A very few seconds later, the app tried to reconnect (requesting a SDP
record) using another dongle, hci3. And I got that error:

2007-05-09 17:11:26,892 hci3 < HCI Command: Create Connection
(0x01|0x0005) plen 13
2007-05-09 17:11:26,892 hci3 bdaddr 00:60:57:BB:4D:92 ptype 0xcc18
rswitch 0x00 clkoffset 0x0000
2007-05-09 17:11:26,892 hci3 Packet type: DM1 DM3 DM5 DH1 DH3 DH5
2007-05-09 17:11:26,908 hci3 > HCI Event: Command Status (0x0f) plen 4
2007-05-09 17:11:26,908 hci3 Create Connection (0x01|0x0005) status
0x0b ncmd 1
2007-05-09 17:11:26,908 hci3 Error: ACL Connection Already Exists

It tried again 30s latter, with the same result.


2007-05-09 17:11:56,623 hci3 < HCI Command: Create Connection
(0x01|0x0005) plen 13
2007-05-09 17:11:56,623 hci3 bdaddr 00:60:57:BB:4D:92 ptype 0xcc18
rswitch 0x00 clkoffset 0x0000
2007-05-09 17:11:56,623 hci3 Packet type: DM1 DM3 DM5 DH1 DH3 DH5
2007-05-09 17:11:56,638 hci3 > HCI Event: Command Status (0x0f) plen 4
2007-05-09 17:11:56,638 hci3 Create Connection (0x01|0x0005) status
0x0b ncmd 1
2007-05-09 17:11:56,638 hci3 Error: ACL Connection Already Exists

At that point, I did shut the application down.

How can such a thing happen?

Thanks in advance,
Best Regards

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2007-05-09 17:57:57

by Pierre-Yves Paulus

[permalink] [raw]
Subject: Re: [Bluez-devel] "ACL Connection Already Exists" while using only DBus calls

Hello again,

I forgot to mention 3 things in my last message about the same subject:

-the last signal received about the device I want to connect to is a
"RemoteDeviceDisconnected", and no "RemoteDeviceConnected" signal has
been received afterwards.

-this is confirmed by the output of a call to adapter.ListConnections,
which tells that no connections exist at all.

-Sometimes, the error I get (exactly the same circumstances) in hcidump is

< HCI Command: Create Connection (0x01|0x0005) plen 13
bdaddr 00:60:57:4F:EB:37 ptype 0xcc18 rswitch 0x00 clkoffset 0x0000
Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> HCI Event: Command Status (0x0f) plen 4
Create Connection (0x01|0x0005) status 0x09 ncmd 1
Error: Connection Limit Exceeded


So for me it clearly looks like a bug. What can I do to help get it fixed?

Regards,
Pierre-Yves



Pierre-Yves Paulus wrote:
> Hello,
>
> I've a system with several dongles, which are driven by a custom app,
> using only DBus calls to hcid.
>
> Using dongle hci4, I connected to a device, performed some operations,
> and disconnected:
>
> 2007-05-09 17:11:23,997 hci4 < HCI Command: Disconnect (0x01|0x0006) plen 3
> 2007-05-09 17:11:23,997 hci4 handle 11 reason 0x13
> 2007-05-09 17:11:23,997 hci4 Reason: Remote User Terminated Connection
> 2007-05-09 17:11:23,999 hci4 > HCI Event: Command Status (0x0f) plen 4
> 2007-05-09 17:11:23,999 hci4 Disconnect (0x01|0x0006) status 0x00
> ncmd 1
> 2007-05-09 17:11:24,031 hci4 > HCI Event: Disconn Complete (0x05) plen 4
> 2007-05-09 17:11:24,031 hci4 status 0x00 handle 11 reason 0x16
> 2007-05-09 17:11:24,032 hci4 Reason: Connection Terminated by Local
> Host
>
> A very few seconds later, the app tried to reconnect (requesting a SDP
> record) using another dongle, hci3. And I got that error:
>
> 2007-05-09 17:11:26,892 hci3 < HCI Command: Create Connection
> (0x01|0x0005) plen 13
> 2007-05-09 17:11:26,892 hci3 bdaddr 00:60:57:BB:4D:92 ptype 0xcc18
> rswitch 0x00 clkoffset 0x0000
> 2007-05-09 17:11:26,892 hci3 Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> 2007-05-09 17:11:26,908 hci3 > HCI Event: Command Status (0x0f) plen 4
> 2007-05-09 17:11:26,908 hci3 Create Connection (0x01|0x0005) status
> 0x0b ncmd 1
> 2007-05-09 17:11:26,908 hci3 Error: ACL Connection Already Exists
>
> It tried again 30s latter, with the same result.
>
>
> 2007-05-09 17:11:56,623 hci3 < HCI Command: Create Connection
> (0x01|0x0005) plen 13
> 2007-05-09 17:11:56,623 hci3 bdaddr 00:60:57:BB:4D:92 ptype 0xcc18
> rswitch 0x00 clkoffset 0x0000
> 2007-05-09 17:11:56,623 hci3 Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> 2007-05-09 17:11:56,638 hci3 > HCI Event: Command Status (0x0f) plen 4
> 2007-05-09 17:11:56,638 hci3 Create Connection (0x01|0x0005) status
> 0x0b ncmd 1
> 2007-05-09 17:11:56,638 hci3 Error: ACL Connection Already Exists
>
> At that point, I did shut the application down.
>
> How can such a thing happen?
>
> Thanks in advance,
> Best Regards
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> Bluez-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/bluez-devel

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Download DB2 Express C - the FREE version of DB2 express and take
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_______________________________________________
Bluez-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/bluez-devel