Re: [Bluez-devel] What's going on here? RFCOMM on OPP always gets disconnected

Pierre-Yves Paulus
2006-09-05T14:02:43Z

Hi marcel,

> > > in case please to "hcidump -X -V --obex=9". I am not going to decide
> > > OBEX by hand if I don't have to.
>
> please check that their OPP service is still on channel 9. The channel
> numbers might have changed and you connect to the wrong channel.

I just checked, but it is not the case: OPP is still on the channel 9. I
get the prompt to accept the incoming object, but past that point it
always does behave like in the log I posted earlier. If I was on the
wrong channel, how could I get this as I do?

> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(d): cid 0x0040 len 12 [psm 3]
RFCOMM(d): UIH: cr 0 dlci 18 pf 1 ilen 7 fcs 0x8 credits 1
OBEX: Connect rsp(f): status 200 len 7 version 1.0 flags 0 mtu
2044
Status 200 = Success

I did the same test on another phone (SE k750i), and the log looks alike
(with the endless list of 0's at the end too). Here it is:

HCI sniffer - Bluetooth packet analyzer ver 1.31
device: hci0 snap_len: 1028 filter: 0xffffffff
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 0]
0000: 2b 53 01 6d +S.m
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 0]
0000: 2b 73 01 47 +s.G
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 0]
0000: 03 53 01 fd .S..
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Disconn req: dcid 0x0040 scid 0x0040
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 0]
0000: 03 73 01 d7 .s..
> ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Disconn rsp: dcid 0x0040 scid 0x0040
> HCI Event: Number of Completed Packets (0x13) plen 5
0000: 01 0c 00 03 00 .....
< HCI Command: Disconnect (0x01|0x0006) plen 3
0000: 0c 00 13 ...
> HCI Event: Command Status (0x0f) plen 4
0000: 00 01 06 04 ....
> HCI Event: Disconn Complete (0x05) plen 4
0000: 00 0c 00 16 ....
< HCI Command: Create Connection (0x01|0x0005) plen 13
0000: 0b bf 2c 20 16 00 18 cc 02 00 00 00 01 .., .........
> HCI Event: Command Status (0x0f) plen 4
0000: 00 01 05 04 ....
> HCI Event: Connect Complete (0x03) plen 11
0000: 00 0c 00 0b bf 2c 20 16 00 01 00 ....., ....
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 3 scid 0x0040
< HCI Command: Write Link Policy Settings (0x02|0x000d) plen 4
0000: 0c 00 0f 00 ....
> HCI Event: Command Complete (0x0e) plen 6
0000: 01 0d 08 00 0c 00 ......
< HCI Command: Remote Name Request (0x01|0x0019) plen 10
0000: 0b bf 2c 20 16 00 02 00 00 00 .., ......
> HCI Event: Command Status (0x0f) plen 4
0000: 00 01 19 04 ....
> HCI Event: Max Slots Change (0x1b) plen 3
0000: 0c 00 05 ...
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 0
Connection pending - No futher information available
> HCI Event: Remote Name Req Complete (0x07) plen 255
0000: 00 0b bf 2c 20 16 00 4b 37 35 30 69 00 00 00
00 ..., ..K750i....
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ...............
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
Connection successful
< ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
MTU 1013
> ACL data: handle 12 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
MTU 1013
< ACL data: handle 12 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): SABM: cr 1 dlci 0 pf 1 ilen 0 fcs 0x1c
> HCI Event: Number of Completed Packets (0x13) plen 5
0000: 01 0c 00 04 00 .....
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0040 len 14 [psm 3]
RFCOMM(s): PN CMD: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
dlci 10 frame_type 0 credit_flow 15 pri 7 ack_timer 0
frame_size 1008 max_retrans 0 credits 7
> ACL data: handle 12 flags 0x02 dlen 19
L2CAP(d): cid 0x0040 len 15 [psm 3]
RFCOMM(s): PN RSP: cr 0 dlci 0 pf 0 ilen 10 fcs 0xaa mcc_len 8
dlci 10 frame_type 0 credit_flow 14 pri 7 ack_timer 0
frame_size 329 max_retrans 0 credits 0
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): SABM: cr 1 dlci 10 pf 1 ilen 0 fcs 0x8c
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 10 pf 1 ilen 0 fcs 0x47
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(d): cid 0x0040 len 8 [psm 3]
RFCOMM(s): MSC CMD: cr 1 dlci 0 pf 0 ilen 4 fcs 0x70 mcc_len 2
dlci 10 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 0 b2 0 b3 0 len 0
> ACL data: handle 12 flags 0x02 dlen 9
L2CAP(d): cid 0x0040 len 5 [psm 3]
RFCOMM(d): UIH: cr 0 dlci 10 pf 1 ilen 0 fcs 0x76 credits 20
> ACL data: handle 12 flags 0x02 dlen 13
L2CAP(d): cid 0x0040 len 9 [psm 3]
RFCOMM(s): MSC CMD: cr 0 dlci 0 pf 0 ilen 4 fcs 0xaa mcc_len 2
dlci 10 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 0 b2 0 b3 0 len 0
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(d): cid 0x0040 len 8 [psm 3]
RFCOMM(s): MSC RSP: cr 1 dlci 0 pf 0 ilen 4 fcs 0x70 mcc_len 2
dlci 10 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 0 b2 0 b3 0 len 0
> ACL data: handle 12 flags 0x02 dlen 13
L2CAP(d): cid 0x0040 len 9 [psm 3]
RFCOMM(s): MSC RSP: cr 0 dlci 0 pf 0 ilen 4 fcs 0xaa mcc_len 2
dlci 10 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 0 b2 0 b3 0 len 0
< ACL data: handle 12 flags 0x02 dlen 9
L2CAP(d): cid 0x0040 len 5 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 1 ilen 0 fcs 0xac credits 33
> HCI Event: Number of Completed Packets (0x13) plen 5
0000: 01 0c 00 04 00 .....
> ACL data: handle 12 flags 0x02 dlen 12
L2CAP(d): cid 0x0040 len 8 [psm 3]
RFCOMM(s): RPN CMD: cr 0 dlci 0 pf 0 ilen 3 fcs 0xaa mcc_len 1
dlci 10 br 170 db 2 sb 0 p 1 pt 2 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 73 xoff 1 pm 0x0000
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0040 len 14 [psm 3]
RFCOMM(s): RPN RSP: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
dlci 10 br 7 db 3 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 17 xoff 19 pm 0x3f7f
> ACL data: handle 12 flags 0x02 dlen 12
L2CAP(d): cid 0x0040 len 8 [psm 3]
RFCOMM(s): RPN CMD: cr 0 dlci 0 pf 0 ilen 3 fcs 0xaa mcc_len 1
dlci 10 br 170 db 0 sb 0 p 0 pt 0 xi 1 xo 0
rtri 0 rtro 0 rtci 1 rtco 0 xon 19 xoff 127 pm 0x703f
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0040 len 14 [psm 3]
RFCOMM(s): RPN RSP: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
dlci 10 br 7 db 3 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 17 xoff 19 pm 0x3f7f
> HCI Event: Number of Completed Packets (0x13) plen 5
0000: 01 0c 00 03 00 .....
< ACL data: handle 12 flags 0x02 dlen 15
L2CAP(d): cid 0x0040 len 11 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 0 ilen 7 fcs 0xb0
OBEX: Connect cmd(f): len 7 version 1.0 flags 0 mtu 8192
> HCI Event: Number of Completed Packets (0x13) plen 5
0000: 01 0c 00 01 00 .....
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(d): cid 0x0040 len 12 [psm 3]
RFCOMM(d): UIH: cr 0 dlci 10 pf 1 ilen 7 fcs 0x76 credits 1
OBEX: Connect rsp(f): status 200 len 7 version 1.0 flags 0 mtu
4096
< ACL data: handle 12 flags 0x02 dlen 9
L2CAP(d): cid 0x0040 len 5 [psm 3]
RFCOMM(d): UIH: cr 1 dlci 10 pf 0 ilen 1 fcs 0xb0
OBEX: Connect rsp(f): status 200 len 0 version 0.0 flags 0 mtu
8192
Count (0x00) = Unicode length 65533
0000: 00 00 11 00 00 00 00 00 00 00 00 10 00 00 00
00 ................
0010: 00 00 61 0b 02 00 00 00 00 00 00 00 00 00 00
00 ..a.............
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 ................

(and it does go on the same way)

Any hint will be very welcome.

Best Regards,