February 2012 - Bluetooth-dev

Re: GAP Discovery
by Craig Dooley 29 Feb '12

29 Feb '12

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10.7.3 issues: BluetoothHCIAuthenticationRequested
by Ken Aspeslagh 29 Feb '12

29 Feb '12

Hi, Our device (BT-1 wireless webcam) is not working correctly on 10.7.3. It works perfectly the first time after pairing, but on subsequent attempts to connect, openL2CAPChannelSync return kIOReturnNoDevice. The console gets errors like: [IOBluetoothDevice instantiateChannel] BluetoothHCIAuthenticationRequested failed because not connected and 2/29/12 10:33:49.000 AM kernel: [SendHCIRequestFormatted] ### ERROR: [0x080D] (Write Link Policy Settings) -- Send request failed (err = 0x0002 (kBluetoothHCIErrorNoConnection)) 2/29/12 10:34:04.000 AM kernel: [SendHCIRequestFormatted] ### ERROR: [0x041D] (Read Remote Version Information) -- Send request failed (err = 0x0002 (kBluetoothHCIErrorNoConnection)) 2/29/12 10:34:04.000 AM kernel: [SendHCIRequestFormatted] ### ERROR: [0x080D] (Write Link Policy Settings) -- Send request failed (err = 0x0002 (kBluetoothHCIErrorNoConnection)) 2/29/12 10:34:04.000 AM kernel: [SendHCIRequestFormatted] ### ERROR: [0x040B] (Link Key Request Reply) -- Send request failed (err = 0x0002 (kBluetoothHCIErrorNoConnection)) 2/29/12 10:34:16.000 AM kernel: [SendHCIRequestFormatted] ### ERROR: [0x080D] (Write Link Policy Settings) -- Send request failed (err = 0x0002 (kBluetoothHCIErrorNoConnection)) Removing the paired device and re-adding it makes it work again, just once that first time after pairing... Has anyone run into something like this with 10.7.3? Can someone from the Bluetooth team summarize the changes in 10.7.3 and make a guess as to what's gone wrong? Is our device doing something wrong during authentication? Many thanks, Ken _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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GAP Discovery
by Thomas Sorensen 29 Feb '12

29 Feb '12

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Re: Using unsecure/unauthenticated RFCOMM
by Greg Hazel 27 Feb '12

27 Feb '12

Hi, I don't find it to be true that the Windows stack requires authentication. I have successfully connected pairs of authenticated devices on Windows using SO_BTH_AUTHENTICATE set to false and on bluez using RFCOMM_LM_AUTH set to false. Be sure that both the connecting socket and the listening socket have these set. Using those and openConnection on OS X with authenticationRequired:NO, I am able to form unauthenticated RFCOMM connections initiated by OS X. It seems that OS X has a limitation, or at least an oversight from the API I can find, which prevents it from listening for unauthenticated RFCOMM connections. I was actually hoping someone on this list knew a way to get OS X to not require authentication for incoming RFCOMM channels, since other platforms seem to support it. -Greg On Feb 27, 2012, at 5:11 AM, Matthias Ringwald wrote: > Hi > > I would assume that at least one of your devices insists on an authorized RFCOMM connection, which is at least true for Windows MS stack. > > It makes sense to allow unencrypted baseband connections - by this, you can do SDP queries and learn about the remote device before setting up an encrypted connection for the actual data. > > Best > Matthias > > On Feb 23, 2012, at 7:09 PM, Alexei Czeskis wrote: > >> Hello! >> >> Does anyone have any experience using unsecure/unauthenticated RFCOMM >> on OS X? I'm trying to do unsecure RFCOMM between two unpaired >> bluetooth devices (one is a MacBook running 10.7.3, the other is an >> Android phone running ICS). I seem to be able to open an >> unauthenticated baseband connection, but not an unauthenticated RFCOMM >> channel over an unauthenticated basebandconnection. >> >> What's odd is that I am able to open an unauthenticated baseband >> connection successfully, but when I try to open an RFCOMM channel over >> that connection, the devices try to pair. Here is roughly what I'm >> doing: >> >> /* >> * Before this part, I: >> * 1. Create device from a BT address string >> * 2. Perform an SDP query >> * 3. Extract the SDP record by UUID, make sure the service name >> matches my service >> * (whine that getServiceRecordForUUID returns one record instead of a list) >> * 4. Get the channel ID from SDP record >> */ >> >> // Try connecting to device >> if( [device openConnection:nil >> withPageTimeout:100000 >> authenticationRequired:false] != kIOReturnSuccess ) { >> NSLog(@"Couldn't open unauthenticated baseband connection to >> client device"); >> exit(3); >> } >> NSLog(@"\tOpened unauthenticated baseband connection successfully"); >> >> // Try opening an RFCOMM channel >> IOBluetoothRFCOMMChannel *channel = nil; >> IOReturn status; >> if ( [device openRFCOMMChannelSync:&channel >> withChannelID:channelID delegate:self] != kIOReturnSuccess) { >> NSLog(@"Couldn't open RFCOMM channel"); >> [device closeConnection]; >> exit(8); >> } >> NSLog(@"\tOpened RFCOMM channel"); >> >> The above code fails at the openRFCOMMChannelSync() call. >> >> I'm fairly certain that the other endpoint is doing what it's supposed >> to be doing -- I've been able to created unauthenticated RFCOMM >> channels to it using unbuntu without pairing the two devices. >> >> Can anyone point me in the right direction? Thanks! >> >> >> -Alexei >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/bluetooth-dev/mringwal%40inf.ethz.ch >> >> This email sent to mringwal(a)inf.ethz.ch > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/ghazel%40gmail.com > > This email sent to ghazel(a)gmail.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Using unsecure/unauthenticated RFCOMM
by Matthias Ringwald 27 Feb '12

27 Feb '12

Hi I would assume that at least one of your devices insists on an authorized RFCOMM connection, which is at least true for Windows MS stack. It makes sense to allow unencrypted baseband connections - by this, you can do SDP queries and learn about the remote device before setting up an encrypted connection for the actual data. Best Matthias On Feb 23, 2012, at 7:09 PM, Alexei Czeskis wrote: > Hello! > > Does anyone have any experience using unsecure/unauthenticated RFCOMM > on OS X? I'm trying to do unsecure RFCOMM between two unpaired > bluetooth devices (one is a MacBook running 10.7.3, the other is an > Android phone running ICS). I seem to be able to open an > unauthenticated baseband connection, but not an unauthenticated RFCOMM > channel over an unauthenticated basebandconnection. > > What's odd is that I am able to open an unauthenticated baseband > connection successfully, but when I try to open an RFCOMM channel over > that connection, the devices try to pair. Here is roughly what I'm > doing: > > /* > * Before this part, I: > * 1. Create device from a BT address string > * 2. Perform an SDP query > * 3. Extract the SDP record by UUID, make sure the service name > matches my service > * (whine that getServiceRecordForUUID returns one record instead of a list) > * 4. Get the channel ID from SDP record > */ > > // Try connecting to device > if( [device openConnection:nil > withPageTimeout:100000 > authenticationRequired:false] != kIOReturnSuccess ) { > NSLog(@"Couldn't open unauthenticated baseband connection to > client device"); > exit(3); > } > NSLog(@"\tOpened unauthenticated baseband connection successfully"); > > // Try opening an RFCOMM channel > IOBluetoothRFCOMMChannel *channel = nil; > IOReturn status; > if ( [device openRFCOMMChannelSync:&channel > withChannelID:channelID delegate:self] != kIOReturnSuccess) { > NSLog(@"Couldn't open RFCOMM channel"); > [device closeConnection]; > exit(8); > } > NSLog(@"\tOpened RFCOMM channel"); > > The above code fails at the openRFCOMMChannelSync() call. > > I'm fairly certain that the other endpoint is doing what it's supposed > to be doing -- I've been able to created unauthenticated RFCOMM > channels to it using unbuntu without pairing the two devices. > > Can anyone point me in the right direction? Thanks! > > > -Alexei > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/mringwal%40inf.ethz.ch > > This email sent to mringwal(a)inf.ethz.ch _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: iPhone 4S and BLE HID Keyboard
by Joakim Linde 24 Feb '12

24 Feb '12

Hi Cheong, We can't unfortunately comment on features in future releases. Thanks, Joakim On Feb 23, 2012, at 7:27 PM, Poon Yuk Cheong / 昌 <yukcheong.poon(a)suncupid.com> wrote: > Hi there, > > As the HID Over GATT Profile spec. has been adopted, I have a question that how does iPhone 4S support HID devices such as keyboards in the future? > > Regards, > Cheong > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/joakim%40apple.com > > This email sent to joakim(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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iPhone 4S and BLE HID Keyboard
by Poon Yuk Cheong / 昌 24 Feb '12

24 Feb '12

Hi there, As the HID Over GATT Profile spec. has been adopted, I have a question that how does iPhone 4S support HID devices such as keyboards in the future? Regards, Cheong _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Using unsecure/unauthenticated RFCOMM
by Alexei Czeskis 23 Feb '12

23 Feb '12

Hello! Does anyone have any experience using unsecure/unauthenticated RFCOMM on OS X? I'm trying to do unsecure RFCOMM between two unpaired bluetooth devices (one is a MacBook running 10.7.3, the other is an Android phone running ICS). I seem to be able to open an unauthenticated baseband connection, but not an unauthenticated RFCOMM channel over an unauthenticated basebandconnection. What's odd is that I am able to open an unauthenticated baseband connection successfully, but when I try to open an RFCOMM channel over that connection, the devices try to pair. Here is roughly what I'm doing: /* * Before this part, I: * 1. Create device from a BT address string * 2. Perform an SDP query * 3. Extract the SDP record by UUID, make sure the service name matches my service * (whine that getServiceRecordForUUID returns one record instead of a list) * 4. Get the channel ID from SDP record */ // Try connecting to device if( [device openConnection:nil withPageTimeout:100000 authenticationRequired:false] != kIOReturnSuccess ) { NSLog(@"Couldn't open unauthenticated baseband connection to client device"); exit(3); } NSLog(@"\tOpened unauthenticated baseband connection successfully"); // Try opening an RFCOMM channel IOBluetoothRFCOMMChannel *channel = nil; IOReturn status; if ( [device openRFCOMMChannelSync:&channel withChannelID:channelID delegate:self] != kIOReturnSuccess) { NSLog(@"Couldn't open RFCOMM channel"); [device closeConnection]; exit(8); } NSLog(@"\tOpened RFCOMM channel"); The above code fails at the openRFCOMMChannelSync() call. I'm fairly certain that the other endpoint is doing what it's supposed to be doing -- I've been able to created unauthenticated RFCOMM channels to it using unbuntu without pairing the two devices. Can anyone point me in the right direction? Thanks! -Alexei _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Is Core Bluetooth compatible with Grand Central Dispatch?
by Gutierrez, Gerald 18 Feb '12

18 Feb '12

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Re: long service/characteristic discovery times in BLE
by Joakim Linde 17 Feb '12

17 Feb '12

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