Issue: This issue happened with JVC carkit. When we reject incoming pbap
connection then carkit again initiating incoming pbap connection.
Analysis: Checked the hcidump of andriod and then get to know that while
reject an incoming pbap connection it is sending packet type as RFCOMM Disc
whereas bluez was sending packet type as DM (Disconnect Mode)
Please check the logs below
Solution: Accept the connection then drop if reject was set
Andriod logs
2015-09-03 11:33:48.877598 > ACL data: handle 11 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 3 scid 0x0041
2015-09-03 11:33:48.878830 < ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0041 scid 0x0041 result 0 status 0
Connection successful
2015-09-03 11:33:48.879568 < ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
MTU 1691
2015-09-03 11:33:48.947164 > ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
MTU 1013
2015-09-03 11:33:48.948221 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 11 packets 2
....
2015-09-03 11:33:52.803776 < ACL data: handle 11 flags 0x02 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): DISC: cr 0 dlci 38 pf 1 ilen 0 fcs 0x85
2015-09-03 11:33:52.812981 > ACL data: handle 11 flags 0x02 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): UA: cr 0 dlci 38 pf 1 ilen 0 fcs 0xaf
2015-09-03 11:33:52.813508 < ACL data: handle 11 flags 0x02 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): DISC: cr 0 dlci 0 pf 1 ilen 0 fcs 0x9c
2015-09-03 11:33:52.816631 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 11 packets 2
2015-09-03 11:33:52.843181 > ACL data: handle 11 flags 0x02 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): UA: cr 0 dlci 0 pf 1 ilen 0 fcs 0xb6
2015-09-03 11:33:52.843636 < ACL data: handle 11 flags 0x02 dlen 12
L2CAP(s): Disconn req: dcid 0x0041 scid 0x0041
2015-09-03 11:33:52.869122 > ACL data: handle 11 flags 0x02 dlen 12
L2CAP(s): Disconn rsp: dcid 0x0041 scid 0x0041
2015-09-03 11:33:53.014953 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 11 packets 1
Logs from bluez
2015-01-04 18:05:04.459983 > ACL data: handle 50 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 3 scid 0x0041
2015-01-04 18:05:04.460074 < ACL data: handle 50 flags 0x00 dlen 16
L2CAP(s): Connect rsp: dcid 0x0041 scid 0x0041 result 0 status 0
Connection successful
2015-01-04 18:05:04.460105 < ACL data: handle 50 flags 0x00 dlen 27
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 15
MTU 1013
RFC 0x00 (Basic)
2015-01-04 18:05:04.463004 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 50 packets 1
2015-01-04 18:05:04.463676 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 50 packets 1
2015-01-04 18:05:04.486747 > ACL data: handle 50 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
MTU 1013
....
2015-01-04 18:05:13.768241 < ACL data: handle 50 flags 0x00 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): DM: cr 1 dlci 30 pf 1 ilen 0 fcs 0x47
2015-01-04 18:05:13.771445 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 50 packets 1
2015-01-04 18:05:13.783896 > ACL data: handle 50 flags 0x02 dlen 12
L2CAP(s): Disconn req: dcid 0x0041 scid 0x0041
2015-01-04 18:05:13.784019 < ACL data: handle 50 flags 0x00 dlen 12
L2CAP(s): Disconn rsp: dcid 0x0041 scid 0x0041
2015-01-04 18:05:13.787589 > HCI Event: Number of Completed Packets (0x13) plen 5
handle 50 packets 1
2015-01-04 18:05:13.947623 > HCI Event: Disconn Complete (0x05) plen 4
status 0x00 handle 50 reason 0x13
Reason: Remote User Terminated Connection
---
src/profile.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/profile.c b/src/profile.c
index ca1dfec..3b76e8f 100644
--- a/src/profile.c
+++ b/src/profile.c
@@ -1068,17 +1068,17 @@ static void ext_auth(DBusError *err, void *user_data)
goto drop;
}
- if (err && dbus_error_is_set(err)) {
- error("%s rejected %s: %s", ext->name, addr, err->message);
- goto drop;
- }
-
if (!bt_io_accept(conn->io, ext_connect, conn, NULL, &gerr)) {
error("bt_io_accept: %s", gerr->message);
g_error_free(gerr);
goto drop;
}
+ if (err && dbus_error_is_set(err)) {
+ error("%s rejected %s: %s", ext->name, addr, err->message);
+ goto drop;
+ }
+
DBG("%s authorized to connect to %s", addr, ext->name);
return;
--
1.7.9.5
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