"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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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

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

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