Re: Help! Sending RFCOMM packet over L2CAP fails.
site_archiver@lists.apple.com Delivered-To: bluetooth-dev@lists.apple.com Should you decide to use your own obex, just build the connection over the RFCOMM APIs instead than building your own RFCOMM stack. ... Marco On Nov 11, 2005, at 3:54 AM, Esa Karjalainen wrote: Greetings. I've been working on an application, which builds an RFCOMM (OBEX) packet directly on top of L2Cap. The initialization of the connection seems to go okay. Interestingly enough, SDP works fine built over L2Cap. Another question: The class IOBluetoothHCIController. Does any documentation exist of that class? I'd very much like being able to access the HCI layer. Thanks, - Esa Here's the relevant parts of the code: [super connectionAttempt:true]; [localPool release]; return true; } --------------- Send: --------------- - (bool)send:(char*)data len:(int)len { IOReturn ioret; ioret = [l2capChannel writeSync:data length:len]; if (ioret != kIOReturnSuccess) { if (debug){ printf("RAWDEBUG: Write failed, ioret: 0x%x\n", ioret); } return false; } return true; } _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.a... This happens because the Apple RFCOMM implementation matches on the L2CAP channel with PSM 3 much before yours, and then makes that L2CAP channel unavailable to anybody else (there can be only one client). I would recommend you to use the Apple OBEX implementation, aside of the fact that it would workaround this specific issue it will save you a lot of work, it has really easy to use apis, and has been extensively tested. However, Writing, i.e. writeSync always fails. it returns kIOReturnNotPrivileged. (0xe00002c1). Is L2Cap access somehow restricted, to disallow direct creation of RFCOMM connections? I ran the program as root. ( I sudo'ed the application, I sudo su'd, _then_ ran it - didn't help. ) Creating the connection: --------------- NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init]; IOBluetoothDevice* blue_device = [super getDevice:target]; if (blue_device == NULL) { if (debug) { printf("Unable to get the Bluetooth device\n"); } [super connectionAttempt:false]; [localPool release]; return false; } if ([blue_device openConnection] != kIOReturnSuccess) { if (debug) { printf("Failed to open a connection to the bluetooth device. \n"); } [super connectionAttempt:false]; [localPool release]; return false; } IOReturn ioret = [blue_device openL2CAPChannelSync:&l2capChannel withPSM:psm delegate:self]; [l2capChannel retain]; if (ioret != kIOReturnSuccess) { if (debug) { printf("Failed to open a L2CAP channel. \n"); } [super connectionAttempt:false]; [localPool release]; return false; } _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/bluetooth-dev/mpontil% 40apple.com This email sent to mpontil@apple.com This email sent to site_archiver@lists.apple.com
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Marco Pontil