@moderator please excuse my first mail, I hit the wrong button.
Hi everybody,
I'm trying for hours and couldn't find an answer anywhere online nor
in my Logs. I'm trying to establisch an RFCOMM Link by Bluetooth
between an external Device that implements the SPP 1.04 Profile. Here
is the output from sdptool:
sudo sdptool browse
Inquiring ...
Browsing 00:0B:0D:8E:D4:33 ...
Service Name: SPP slave
Service Description: Bluetooth SPP V1.04
Service RecHandle: 0x10000
Service Class ID List:
"Serial Port" (0x1101)
Protocol Descriptor List:
"L2CAP" (0x0100)
"RFCOMM" (0x0003)
Channel: 1
Language Base Attr List:
code_ISO639: 0x656e
encoding: 0x6a
base_offset: 0x100
The Device just provides this and doesn't have any input or screen.
And it does work with Linux etc.
I'm using the following Code in order to establish an Connection:
UUID is set to SSDP UUID (16bit UUID = 00001101)
private static final UUID MY_UUID =
UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
private static String address = "00:0B:0D:8E:D4:33";
This happens in onCreate():
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Then in onResume:
//Starting an discovery
mBluetoothAdapter.startDiscovery();
//getting the device
BluetoothDevice device =
mBluetoothAdapter.getRemoteDevice(address);
Log.e(TAG, device.getName() + " connected");
//establishing socket
try {
btSocket =
device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
Log.e(TAG, "ON RESUME: Socket creation failed.", e);
}
Log.e(TAG, "TRYING TO CONNECT");
//Connecting the socket
try {
btSocket.connect();
Log .e(TAG,"ON RESUME: BT connection established,
data transfer
link open.");
} catch (IOException e) {
//handling of Exception output etc.
}
If I look at the dump, everything works until I try to connect to the
socket and I don't understand why it isn't working after that. Here
ist the dump Look for the TAG ThinBTClient for Log Output.
E/THINBTCLIENT( 5991): +++ ON CREATE +++
E/THINBTCLIENT( 5991): +++ DONE IN ON CREATE, GOT LOCAL BT ADAPTER +++
E/THINBTCLIENT( 5991): ++ ON START ++
E/THINBTCLIENT( 5991): + ON RESUME +
E/THINBTCLIENT( 5991): + ABOUT TO ATTEMPT CLIENT CONNECT +
I/DTUN_CLNT( 2155): Client calling DTUN_METHOD_DM_START_DISCOVERY
(id 2)
I/ ( 2140): DTUN_ReceiveCtrlMsg: [DTUN] Received message
[BTLIF_DTUN_METHOD_CALL] 4354
I/ ( 2140): handle_method_call: handle_method_call :: received
DTUN_METHOD_DM_START_DISCOVERY (id 2), len 0
W/BTLD ( 2140): bta_dm_check_av:0
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 4 pbytes (hdl 10)
I/ADAPTER ( 2155): Discovery session 0xc7b8 with :1.0 activated
D/ADAPTER ( 2155): session_ref(0xc7b8): ref=1
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_DISCOVERY_STARTED] (id
38) len 6
D/DTUN_HCID( 2155): dtun_dm_sig_discovery_started()
I//system/bin/btld( 2139): btapp_dm_DiscoverDevices()
I/BluetoothEventLoop.cpp( 1908): event_filter: Received signal
org.bluez.Adapter:PropertyChanged from /org/bluez/2155/hci0
E/THINBTCLIENT( 5991): BT GPS connected
D/BluetoothSocket( 5991): BluetoothSocket created fd:
-1uuid00001101-0000-1000-8000-00805f9b34fbport -1
D/BluetoothSocket.cpp( 5991): initSocketNative
I/BLZ20_WRAPPER( 5991): blz20_wrp_socket: fam 31, type 1, prot
BTPROTO_RFCOMM
D/BTL_IFC_WRP( 5991): wrp_wsock_create: (null)
D/BTL_IFC_WRP( 5991): wrp_alloc_new_sock: wrp_alloc_new_sock sub 15
D/BTL_IFC_WRP( 5991): wrp_wsock_create: 31
D/BLZ20_WRAPPER( 5991): btsk_alloc_add: success
D/BLZ20_WRAPPER( 5991): btsk_dump_list: fd (-1:28), bta -1, rc 0,
wflags 0x0
I/BLZ20_WRAPPER( 5991): blz20_wrp_socket: return 31
D/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: fd (-1:31), bta -1, rc
0, wflags 0x0
I/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: configure rfcomm lm mode
0x26, (master:0, auth 1, enc 1)
I/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: success
D/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: fd (-1:31), bta -1, rc
0, wflags 0x0
I/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: configure rfcomm sndbuf
len 71680 bytes
I/BLZ20_WRAPPER( 5991): blz20_wrp_setsockopt: success
D/BluetoothSocket.cpp( 5991): ...fd 31 created (RFCOMM, lm = 26)
D/BluetoothSocket.cpp( 5991): initSocketFromFdNative
E/THINBTCLIENT( 5991): TRYING TO CONNECT
D/BluetoothSocket( 5991): connect
D/BluetoothSocket( 5991): doSdp
I/BluetoothService.cpp( 1908): ... Object Path = /org/bluez/2155/hci0/
dev_00_0B_0D_8E_D4_33
I/BluetoothService.cpp( 1908): ... Pattern =
00001101-0000-1000-8000-00805f9b34fb, strlen = 36
D/DEVICE ( 2155): *************DiscoverServices********
I/DTUN_HCID( 2155): dtun_client_get_remote_svc_channel: starting
discovery on (uuid16=0x0011)
I/DTUN_HCID( 2155): bdaddr=00:0B:0D:8E:D4:33
I/DTUN_CLNT( 2155): Client calling
DTUN_METHOD_DM_GET_REMOTE_SERVICE_CHANNEL (id 4)
I/ ( 2140): DTUN_ReceiveCtrlMsg: [DTUN] Received message
[BTLIF_DTUN_METHOD_CALL] 4354
I/ ( 2140): handle_method_call: handle_method_call :: received
DTUN_METHOD_DM_GET_REMOTE_SERVICE_CHANNEL (id 4), len 134
E/BTLD ( 2140): ****************search UUID = 1101***********
I//system/bin/btld( 2139):
btapp_dm_GetRemoteServiceChannel()
I//system/bin/btld( 2139):
btapp_dm_GetRemoteServiceChannel()
D/WynexActivity( 2003): ----> onWindowFocusChanged(false)
D/Wynex ( 2003): ----> OnWindowFocusChanged()
W/BTLD ( 2140): ccb timer ticks: 2147483648
W/BTLD ( 2140): info:x0
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 10 pbytes (hdl 10)
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_LINK_UP] (id 49) len
12
D/DTUN_HCID( 2155): dtun_dm_sig_link_up()
I/DTUN_HCID( 2155): dtun_dm_sig_link_up: dummy_handle = 266
D/ADAPTER ( 2155): adapter_get_device(00:0B:0D:8E:D4:33)
I/DBUS-HCI( 2155): hcid_dbus_conn_complete: adding device = 0xf9f0
handle = 266
I/ADAPTER ( 2155): adapter_add_connection: adding device = 0xf9f0
handle = 266
I/BluetoothEventLoop.cpp( 1908): event_filter: Received signal
org.bluez.Device:PropertyChanged from /org/bluez/2155/hci0/
dev_00_0B_0D_8E_D4_33
D/BluetoothEventLoop( 1908): Device property changed:00:0B:0D:
8E:D4:33property:Connected
W/BTLD ( 2140): process_service_search_attr_rsp
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 13 pbytes (hdl 10)
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 4 pbytes (hdl 10)
W/BTLD ( 2140): bta_dm_check_av:0
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_RMT_SERVICE_CHANNEL]
(id 42) len 15
I/DTUN_HCID( 2155): dtun_dm_sig_rmt_service_channel: success=0,
service=00000000
E/DTUN_HCID( 2155): discovery unsuccessful!
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_DISCOVERY_STARTED] (id
38) len 6
D/DTUN_HCID( 2155): dtun_dm_sig_discovery_started()
I//system/bin/btld( 2139): btapp_dm_DiscoverDevices()
D/WynexIntentService( 2003):
Action=android.intent.action.CONFIGURATION_CHANGED
I/BluetoothService( 1908): ACL connected, mAclLinkCount = 1
D/BluetoothA2dpService( 1908): Received intent Intent
{ act=android.bluetooth.device.action.ACL_CONNECTED (has extras) }
D/BluetoothA2dpService( 1908): [KJH] device - 00:0B:0D:8E:D4:33,
SinkPriority - 0, isSinkDevice - false, aclCount - 1
D/WifiService( 1908): ACTION_BATTERY_CHANGED pluggedType: 2
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 11 pbytes (hdl 10)
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_LINK_DOWN] (id 47) len
13
I/DTUN_HCID( 2155): *** sig_link_down :: device = [0xf9f0] handle
= [266] addr = [00:0B:0D:8E:D4:33] reason = [16] ***
I/DTUN_HCID( 2155):
I/BluetoothEventLoop.cpp( 1908): event_filter: Received signal
org.bluez.Device:PropertyChanged from /org/bluez/2155/hci0/
dev_00_0B_0D_8E_D4_33
D/BluetoothEventLoop( 1908): Device property changed:00:0B:0D:
8E:D4:33property:Disconnected
D/BT HSHFP( 1998): Received intent Intent
{ act=android.bluetooth.device.action.ACL_DISCONNECTED (has extras) }
I/BT HSHFP( 1998): ACL disconnected
I/BluetoothService( 1908): ACL disconnected, mAclLinkCount = 0
D/BluetoothA2dpService( 1908): Received intent Intent
{ act=android.bluetooth.device.action.ACL_DISCONNECTED (has extras) }
D/WifiService( 1908): ACTION_BATTERY_CHANGED pluggedType: 2
I/BTL-IFS ( 2140): send_ctrl_msg: [BTL_IFS CTRL] send
BTLIF_DTUN_SIGNAL_EVT (CTRL) 16 pbytes (hdl 10)
I/DTUN_CLNT( 2155): dtun-rx signal [DTUN_SIG_DM_DEVICE_FOUND] (id 40)
len 18
I/DTUN_HCID( 2155): *** sig_device_found :: addr =
[00:17:91:04:11:62] class = [240428] ***
I/DTUN_HCID( 2155):
I/BluetoothEventLoop.cpp( 1908): event_filter: Received signal
org.bluez.Adapter:DeviceFound from /org/bluez/2155/hci0
D/BluetoothService( 1908):
updateDeviceServiceChannelCache(00:17:91:04:11:62)
W/WindowManager( 1908): App freeze timeout expired.
W/WindowManager( 1908): Force clearing freeze: AppWindowToken{44206888
token=HistoryRecord{441e6578 de.phil_dev.android.BT/.ThinBTClient}}
D/BluetoothService( 1908): Cleaning up failed UUID channel lookup:
00:0B:0D:8E:D4:33 00001101-0000-1000-8000-00805f9b34fb
D/BluetoothSocket( 5991): onRfcommChannelFound -1
D/BluetoothSocket( 5991): close
D/BluetoothSocket( 5991): cancel
D/BluetoothSocket.cpp( 5991): abortNative
D/BluetoothSocket.cpp( 5991): ...asocket_abort(31) complete
D/BluetoothSocket.cpp( 5991): destroyNative
D/BluetoothSocket.cpp( 5991): ...asocket_destroy(31) complete
Here it stops. Am I using the wrong UUID or does anybody has an better
Idea.
Thank you for your kindness and proper Help.
Greets Philipp Toelle
BTW: There is some very important Information missing on the Android-
dev Page about the Bluetooth API. The android.Permissions.INTERNET
have to be set in the Manifest too, because without them creating a
Socket will fail.
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