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SDP in Motorola phones

Bluez-users Pedro Monjo Florit 2 participants 3 messages Mar 7, 2006 – Mar 9, 2006 Bluetooth drivers

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Pedro Monjo Florit

author
#0 lore raw

Hi,

I am experiencing problems getting SDP information from some new Motorola phones (I am dealing with E770). Running "sdptool browse BDADDR", I get the attached hcidump. As it can be seen, after the SDP SSA request, the mobile phone does not respond any data and after 20 seconds (the SDP timeout compiled in bluez-libs), sdptool issues an ACL disconnect. During this time, the phone freezes completely. If I want to get a specific service (say, OBEX), there are no problems.

From my understanding, the problem is that the Motorola phone does not deal correctly with the SDP query issued by bluez. I have been trying to debug sdptool and comparing to other implementations (Symbian seems to work OK with Motorola) but, as Marcel says, SDP is a horrible protocol.

Has anybody experienced any similar problem?

Thanks,

Pedro

< HCI Command: Create Connection (0x01|0x0005) plen 13
bdaddr 00:12:37:86:61:8A ptype 0xcc18 rswitch 0x01 clkoffset 0x0000 Packet type: DM1 DM3 DM5 DH1 DH3 DH5

Quoted 1 line

HCI Event: Command Status (0x0f) plen 4

    Create Connection (0x01|0x0005) status 0x00 ncmd 1
Quoted 1 line

HCI Event: Connect Complete (0x03) plen 11

    status 0x00 handle 41 bdaddr 00:12:37:86:61:8A type ACL encrypt 0x00
< ACL data: handle 41 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 1 scid 0x0040

< HCI Command: Write Link Policy Settings (0x02|0x000d) plen 4
handle 41 policy 0x0f
Link policy: RSWITCH HOLD SNIFF PARK

Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41 packets 1

Quoted 1 line

HCI Event: Command Complete (0x0e) plen 6

    Write Link Policy Settings (0x02|0x000d) ncmd 1
    status 0x00 handle 41
Quoted 1 line

HCI Event: Max Slots Change (0x1b) plen 3

handle 41 slots 5

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 16

    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
      Connection successful
< ACL data: handle 41 flags 0x02 dlen 12
    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 0
Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 16

    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
      MTU 1024
< ACL data: handle 41 flags 0x02 dlen 14
    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
      Success
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41 packets 1

Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41 packets 1

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 14

    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
      Success
< ACL data: handle 41 flags 0x02 dlen 24
    L2CAP(d): cid 0x0040 len 20 [psm 1]
        SDP SSA Req: tid 0x0 len 0xf
          pat uuid-16 0x1002 (PubBrwsGrp)
          max 65535
          aid(s) 0x0000 - 0xffff
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41 packets 1
< ACL data: handle 41 flags 0x02 dlen 12

    L2CAP(s): Disconn req: dcid 0x0040 scid 0x0040
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41 packets 1

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 12

    L2CAP(s): Disconn rsp: dcid 0x0040 scid 0x0040

< HCI Command: Disconnect (0x01|0x0006) plen 3
handle 41 reason 0x13
Reason: Remote User Terminated Connection

Quoted 1 line

HCI Event: Command Status (0x0f) plen 4

    Disconnect (0x01|0x0006) status 0x00 ncmd 1
Quoted 1 line

HCI Event: Disconn Complete (0x05) plen 4

status 0x00 handle 41 reason 0x16
Reason: Connection Terminated by Local Host

maintainer
#1 lore raw

Hi Pedro,

Quoted 8 lines

I am experiencing problems getting SDP information from some new Motorola phones (I am dealing with E770). Running "sdptool browse BDADDR", I get the attached hcidump. As it can be seen, after the SDP SSA request, the mobile phone does not respond any data and after 20 seconds (the SDP timeout compiled in bluez-libs), sdptool issues an ACL disconnect. During this time, the phone freezes completely. If I want to get a specific service (say, OBEX), there are no problems.

Quoted 6 lines

From my understanding, the problem is that the Motorola phone does not
deal correctly with the SDP query issued by bluez. I have been trying to debug sdptool and comparing to other implementations (Symbian seems to work OK with Motorola) but, as Marcel says, SDP is a horrible protocol.

Has anybody experienced any similar problem?

this problem also exists on the RARZ V3x and I called it ByeByeMoto, because it stalls my complete phone. There can't be an easy workaround. It is a really serious bug from Motorola and they should provide free software upgrades to anyone. However I have no idea how they passed the Bluetooth qualification with these devices.

Regards

Marcel

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author
#2 lore raw

Hi,

Quoted 5 lines
Quoted 5 lines

I am experiencing problems getting SDP information from some new Motorola phones (I am dealing with E770). Running "sdptool browse BDADDR", I get the attached hcidump. As it can be seen, after the SDP SSA request, the mobile phone does not respond any data and after 20 seconds (the SDP timeout compiled in bluez-libs), sdptool issues an ACL disconnect. During this time, the phone freezes completely. If I want to get a specific service (say, OBEX), there are no problems.

From my understanding, the problem is that the Motorola phone does not
deal correctly with the SDP query issued by bluez. I have been trying to debug sdptool and comparing to other implementations (Symbian seems to work OK with Motorola) but, as Marcel says, SDP is a horrible protocol.

Quoted 7 lines
Quoted 1 line

Has anybody experienced any similar problem?

this problem also exists on the RARZ V3x and I called it ByeByeMoto, because it stalls my complete phone. There can't be an easy workaround. It is a really serious bug from Motorola and they should provide free software upgrades to anyone. However I have no idea how they passed the Bluetooth qualification with these devices.

I have been trying to understand what is happening, in order to find a workaround. I do not know what are the internal structures of the SDP protocol and I could not follow sdp_service_search_attr_req().

In any case, I have seen that the SDP query created by Symbian works perfectly on these Motorola phones. I have attached the hcidump's (raw and decoded), if they could be of any use. The most important difference is the SDP SSA packet.

Bluez:
< ACL data: handle 41 flags 0x02 dlen 24

     L2CAP(d): cid 0x0040 len 20 [psm 1]
         SDP SSA Req: tid 0x0 len 0xf
           pat uuid-16 0x1002 (PubBrwsGrp)
           max 65535
           aid(s) 0x0000 - 0xffff
           cont 00

Symbian:

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 17

     L2CAP(d): cid 0x0040 len 13 [psm 1]
         SDP SS Req: tid 0x1 len 0x8
           pat uuid-16 0x1002 (PubBrwsGrp)
           max 65535
           cont 00

As it can be seen, tid and len are different and aid(s) is only in Bluez.

I hope that this can be useful.

Cheers,

Pedro

HCI sniffer - Bluetooth packet analyzer ver 1.18
device: hci0 snap_len: 1028 filter: 0xffffffff

Quoted 1 line

04 04 0A DE DB EA 57 60 00 04 02 50 01

< 01 09 04 07 DE DB EA 57 60 00 01

Quoted 2 lines

04 0F 04 00 01 09 04
04 03 0B 00 29 00 DE DB EA 57 60 00 01 00

< 01 0D 08 04 29 00 0F 00

Quoted 2 lines

04 20 07 DE DB EA 57 60 00 01
04 0E 06 01 0D 08 00 29 00

< 01 0F 04 04 29 00 18 CC

Quoted 3 lines

04 0F 04 00 01 0F 04
04 1D 05 00 29 00 18 CC
02 29 20 0C 00 08 00 01 00 02 01 04 00 01 00 47 00

< 02 29 20 10 00 0C 00 01 00 03 01 08 00 40 00 47 00 00 00 00
00

Quoted 3 lines

04 13 05 01 29 00 01 00
04 1B 03 29 00 05
02 29 20 0C 00 08 00 01 00 04 02 04 00 40 00 00 00

< 02 29 20 0E 00 0A 00 01 00 05 02 06 00 47 00 00 00 00 00 < 02 29 20 0C 00 08 00 01 00 04 01 04 00 47 00 00 00

Quoted 4 lines

04 13 05 01 29 00 01 00
04 13 05 01 29 00 01 00
02 29 20 0E 00 0A 00 01 00 05 01 06 00 40 00 00 00 00 00 02 29 20 11 00 0D 00 40 00 02 00 01 00 08 35 03 19 10 02 FF

FF 00
< 02 29 20 22 00 1E 00 47 00 03 00 01 00 19 00 05 00 05 00 00
00 00 00 01 00 00 00 01 00 01 00 01 00 02 00 01 00 03 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 17 00 13 00 40 00 04 00 02 00 0E 00 00 00 00 04 00

35 05 0A 00 00 FF FF 00
< 02 29 20 9A 00 96 00 47 00 05 00 02 00 91 00 8E 35 8C 09 00
00 0A 00 00 00 00 09 00 01 35 03 19 10 00 09 00 03 19 00 01 09 00 04 35 0B 35 09 19 01 00 09 00 01 09 00 01 09 00 05 35 03 19 10 02 09 00 06 35 09 09 65 6E 09 00 6A 09 01 00 09 01 00 25 0A 53 44 50 20 53 65 72 76 65 72 09 01 01 25 22 42 6C 75 65 74 6F 6F 74 68 20 73 65 72 76 69 63 65 20 64 69 73 63 6F 76 65 72 79 20 73 65 72 76 65 72 09 01 02 25 05 42 6C 75 65 5A 09 02 00 35 03 09 01 00 09 02 01 0A 44 0F E3 CF 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 17 00 13 00 40 00 04 00 03 00 0E 00 01 00 00 04 00

35 05 0A 00 00 FF FF 00
< 02 29 20 7D 00 79 00 47 00 05 00 03 00 74 00 71 35 6F 09 00
00 0A 00 01 00 00 09 00 01 35 03 19 10 01 09 00 06 35 09 09 65 6E 09 00 6A 09 01 00 09 01 00 25 18 50 75 62 6C 69 63 20 42 72 6F 77 73 65 20 47 72 6F 75 70 20 52 6F 6F 74 09 01 01 25 1F 52 6F 6F 74 20 6F 66 20 70 75 62 6C 69 63 20 62 72 6F 77 73 65 20 68 69 65 72 61 72 63 68 79 09 01 02 25 05 42 6C 75 65 5A 09 02 00 19 10 02 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 17 00 13 00 40 00 04 00 04 00 0E 00 01 00 01 04 00

35 05 0A 00 00 FF FF 00
< 02 29 20 92 00 8E 00 47 00 05 00 04 00 89 00 86 35 84 09 00
00 0A 00 01 00 01 09 00 01 35 03 19 11 05 09 00 04 35 11 35 03 19 01 00 35 05 19 00 03 08 03 35 03 19 00 08 09 00 05 35 03 19 10 02 09 00 09 35 08 35 06 19 11 05 09 01 00 09 01 00 25 10 4F 62 65 78 20 50 75 73 68 20 53 65 72 76 65 72 09 01 01 25 1C 4B 44 45 20 4F 42 45 58 20 4F 62 6A 65 63 74 20 50 75 73 68 20 53 65 72 76 69 63 65 09 03 03 35 0E 08 FF 08 01 08 02 08 03 08 04 08 05 08 06 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 17 00 13 00 40 00 04 00 05 00 0E 00 01 00 02 04 00

35 05 0A 00 00 FF FF 00
< 02 29 20 6F 00 6B 00 47 00 05 00 05 00 66 00 63 35 61 09 00
00 0A 00 01 00 02 09 00 01 35 03 19 11 01 09 00 04 35 0C 35 03 19 01 00 35 05 19 00 03 08 05 09 00 05 35 03 19 10 02 09 01 00 25 0D 4B 42 74 53 65 72 69 61 6C 43 68 61 74 09 01 01 25 21 4B 44 45 20 42 6C 75 65 74 6F 6F 74 68 20 53 65 72 69 61 6C 20 43 68 61 74 20 53 65 72 76 69 63 65 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 17 00 13 00 40 00 04 00 06 00 0E 00 01 00 03 04 00

35 05 0A 00 00 FF FF 00
< 02 29 20 85 00 81 00 47 00 05 00 06 00 7C 00 79 35 77 09 00
00 0A 00 01 00 03 09 00 01 35 03 19 11 01 09 00 04 35 0C 35 03 19 01 00 35 05 19 00 03 08 1B 09 00 05 35 03 19 10 02 09 01 00 25 12 4B 44 45 20 42 65 6D 75 73 65 64 20 53 65 72 76 65 72 09 01 01 25 32 4B 44 45 20 53 65 72 76 65 72 20 66 6F 72 20 74 68 65 20 42 65 6D 75 73 65 64 20 72 65 6D 6F 74 65 20 63 6F 6E 74 72 6F 6C 20 70 72 6F 74 6F 63 6F 6C 00

Quoted 2 lines

04 13 05 01 29 00 01 00
02 29 20 0C 00 08 00 01 00 06 03 04 00 40 00 47 00

< 02 29 20 0C 00 08 00 01 00 07 03 04 00 40 00 47 00

Quoted 3 lines

04 13 05 01 29 00 01 00

HCI Event: Connect Request (0x04) plen 10

    bdaddr 00:60:57:EA:DB:DE class 0x500204 type ACL
< HCI Command: Accept Connection Request (0x01|0x0009) plen 7
    bdaddr 00:60:57:EA:DB:DE role 0x01
    Role: Slave
Quoted 1 line

HCI Event: Command Status (0x0f) plen 4

    Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
Quoted 1 line

HCI Event: Connect Complete (0x03) plen 11

    status 0x00 handle 41 bdaddr 00:60:57:EA:DB:DE type ACL encrypt 0x00

< HCI Command: Write Link Policy Settings (0x02|0x000d) plen 4
handle 41 policy 0x0f
Link policy: RSWITCH HOLD SNIFF PARK

Quoted 1 line

HCI Event: Page Scan Repetition Mode Change (0x20) plen 7

0000: de db ea 57 60 00 01 ...W`..

Quoted 1 line

HCI Event: Command Complete (0x0e) plen 6

    Write Link Policy Settings (0x02|0x000d) ncmd 1
    status 0x00 handle 41

< HCI Command: Change Connection Packet Type (0x01|0x000f) plen 4
handle 41 ptype 0xcc18
Packet type: DM1 DM3 DM5 DH1 DH3 DH5
0000: 29 00 18 cc )...

Quoted 1 line

HCI Event: Command Status (0x0f) plen 4

    Change Connection Packet Type (0x01|0x000f) status 0x00 ncmd 1
Quoted 1 line

HCI Event: Connection Packet Type Changed (0x1d) plen 5

status 0x00 handle 41 ptype 0xcc18
Packet type: DM1 DM3 DM5 DH1 DH3 DH5

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 12

    L2CAP(s): Connect req: psm 1 scid 0x0045
< ACL data: handle 41 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0045 result 0 status 0
      Connection successful
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

HCI Event: Max Slots Change (0x1b) plen 3

0000: 29 00 05 )..

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 12

    L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 0
< ACL data: handle 41 flags 0x02 dlen 14
    L2CAP(s): Config rsp: scid 0x0045 flags 0x00 result 0 clen 0
      Success
< ACL data: handle 41 flags 0x02 dlen 12
    L2CAP(s): Config req: dcid 0x0045 flags 0x00 clen 0
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 14

    L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
      Success
Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 17

    L2CAP(d): cid 0x0040 len 13 [psm 1]
        SDP SS Req: tid 0x1 len 0x8
          pat uuid-16 0x1002 (PubBrwsGrp)
          max 65535
          cont 00
< ACL data: handle 41 flags 0x02 dlen 34
    L2CAP(d): cid 0x0045 len 30 [psm 1]
        SDP SS Rsp: tid 0x1 len 0x19
          count 5
          handles 0x0 0x10000 0x10001 0x10002 0x10003
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 23

    L2CAP(d): cid 0x0040 len 19 [psm 1]
        SDP SA Req: tid 0x2 len 0xe
          handle 0x0
          max 1024
          aid(s) 0x0000 - 0xffff
          cont 00
< ACL data: handle 41 flags 0x02 dlen 154
    L2CAP(d): cid 0x0045 len 150 [psm 1]
        SDP SA Rsp: tid 0x2 len 0x91
          count 142
          aid 0x0000 (SrvRecHndl)
             uint 0x0
          aid 0x0001 (SrvClassIDList)
             < uuid-16 0x1000 (SDServer) >
          aid 0x0003 (SrvID)
             uuid-16 0x0001 (SDP)
          aid 0x0004 (ProtocolDescList)
             < < uuid-16 0x0100 (L2CAP) uint 0x1 uint 0x1 > >
          aid 0x0005 (BrwGrpList)
             < uuid-16 0x1002 (PubBrwsGrp) >
          aid 0x0006 (LangBaseAttrIDList)
             < uint 0x656e uint 0x6a uint 0x100 >
          aid 0x0100 (SrvName)
             str "SDP Server"
          aid 0x0101 (SrvDesc)
             str "Bluetooth service discovery server"
          aid 0x0102 (ProviderName)
             str "BlueZ"
          aid 0x0200 (VersionNumList)
             < uint 0x100 >
          aid 0x0201 (SrvDBState)
             uint 0x440fe3cf
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 23

    L2CAP(d): cid 0x0040 len 19 [psm 1]
        SDP SA Req: tid 0x3 len 0xe
          handle 0x10000
          max 1024
          aid(s) 0x0000 - 0xffff
          cont 00
< ACL data: handle 41 flags 0x02 dlen 125
    L2CAP(d): cid 0x0045 len 121 [psm 1]
        SDP SA Rsp: tid 0x3 len 0x74
          count 113
          aid 0x0000 (SrvRecHndl)
             uint 0x10000
          aid 0x0001 (SrvClassIDList)
             < uuid-16 0x1001 (BrwsGrpDesc) >
          aid 0x0006 (LangBaseAttrIDList)
             < uint 0x656e uint 0x6a uint 0x100 >
          aid 0x0100 (SrvName)
             str "Public Browse Group Root"
          aid 0x0101 (SrvDesc)
             str "Root of public browse hierarchy"
          aid 0x0102 (ProviderName)
             str "BlueZ"
          aid 0x0200 (VersionNumList)
             uuid-16 0x1002 (PubBrwsGrp)
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 23

    L2CAP(d): cid 0x0040 len 19 [psm 1]
        SDP SA Req: tid 0x4 len 0xe
          handle 0x10001
          max 1024
          aid(s) 0x0000 - 0xffff
          cont 00
< ACL data: handle 41 flags 0x02 dlen 146
    L2CAP(d): cid 0x0045 len 142 [psm 1]
        SDP SA Rsp: tid 0x4 len 0x89
          count 134
          aid 0x0000 (SrvRecHndl)
             uint 0x10001
          aid 0x0001 (SrvClassIDList)
             < uuid-16 0x1105 (OBEXObjPush) >
          aid 0x0004 (ProtocolDescList)
             < < uuid-16 0x0100 (L2CAP) > <
             uuid-16 0x0003 (RFCOMM) uint 0x3 > <
             uuid-16 0x0008 (OBEX) > >
          aid 0x0005 (BrwGrpList)
             < uuid-16 0x1002 (PubBrwsGrp) >
          aid 0x0009 (BTProfileDescList)
             < < uuid-16 0x1105 (OBEXObjPush) uint 0x100 > >
          aid 0x0100 (SrvName)
             str "Obex Push Server"
          aid 0x0101 (SrvDesc)
             str "KDE OBEX Object Push Service"
          aid 0x0303 (SuppFormatsList)
             < uint 0xff uint 0x1 uint 0x2 uint 0x3 uint 0x4 uint 0x5 uint 0x6 >
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 23

    L2CAP(d): cid 0x0040 len 19 [psm 1]
        SDP SA Req: tid 0x5 len 0xe
          handle 0x10002
          max 1024
          aid(s) 0x0000 - 0xffff
          cont 00
< ACL data: handle 41 flags 0x02 dlen 111
    L2CAP(d): cid 0x0045 len 107 [psm 1]
        SDP SA Rsp: tid 0x5 len 0x66
          count 99
          aid 0x0000 (SrvRecHndl)
             uint 0x10002
          aid 0x0001 (SrvClassIDList)
             < uuid-16 0x1101 (SP) >
          aid 0x0004 (ProtocolDescList)
             < < uuid-16 0x0100 (L2CAP) > <
             uuid-16 0x0003 (RFCOMM) uint 0x5 > >
          aid 0x0005 (BrwGrpList)
             < uuid-16 0x1002 (PubBrwsGrp) >
          aid 0x0100 (SrvName)
             str "KBtSerialChat"
          aid 0x0101 (SrvDesc)
             str "KDE Bluetooth Serial Chat Service"
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 23

    L2CAP(d): cid 0x0040 len 19 [psm 1]
        SDP SA Req: tid 0x6 len 0xe
          handle 0x10003
          max 1024
          aid(s) 0x0000 - 0xffff
          cont 00
< ACL data: handle 41 flags 0x02 dlen 133
    L2CAP(d): cid 0x0045 len 129 [psm 1]
        SDP SA Rsp: tid 0x6 len 0x7c
          count 121
          aid 0x0000 (SrvRecHndl)
             uint 0x10003
          aid 0x0001 (SrvClassIDList)
             < uuid-16 0x1101 (SP) >
          aid 0x0004 (ProtocolDescList)
             < < uuid-16 0x0100 (L2CAP) > <
             uuid-16 0x0003 (RFCOMM) uint 0x1b > >
          aid 0x0005 (BrwGrpList)
             < uuid-16 0x1002 (PubBrwsGrp) >
          aid 0x0100 (SrvName)
             str "KDE Bemused Server"
          aid 0x0101 (SrvDesc)
             str "KDE Server for the Bemused remote control protocol"
          cont 00
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41

Quoted 1 line

ACL data: handle 41 flags 0x02 dlen 12

    L2CAP(s): Disconn req: dcid 0x0040 scid 0x0045
< ACL data: handle 41 flags 0x02 dlen 12
    L2CAP(s): Disconn rsp: dcid 0x0040 scid 0x0045
Quoted 1 line

HCI Event: Number of Completed Packets (0x13) plen 5

handle 41