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I am working on a DriverKit system extension that handles some kind of USB Ethernet adapter. I'm trying to receive data from a Bulk endpoint. Each USB transfer should be up to 512kB, but the actual size of the transfer is not known in advance. What I do is the following: Allocate an IOBufferMemoryDescriptor with IOUSBHostInterface::CreateIOBuffer: ret = ivars->interface->CreateIOBuffer(kIOMemoryDirectionIn, 524288, &b->buffer); Create an OSAction to be used as transfer complete callback: ret = CreateActionReadComplete(0, &b->action); Start the I/O request: ret = ivars->pipe->AsyncIO(b->buffer, 524288, b->action, 0); At that point, I see that instead of starting a single 524288 bytes transfer, it starts 14 36864 bytes transfers and a 8192 bytes one. Which will absolutely not work with the USB device. Is there a transfer size limit I am not aware of?

I'm trying to get a pkg file notarized.The notarization process worked fine for me until some day ago.Now, when I run the altool command, I get this error : *** Error: To use this application, you must first sign in to iTunes Connect and sign the relevant contracts. (1048)I have checked https://developer.apple.com/account/ and https://appstoreconnect.apple.com/agreements/ too see if you have any pending agreement, but there is nothing there.The command I use is 'xcrun altool --notarize-app --primary-bundle-id $MYBUNDLEID --username $MYUSERID --asc-provider $MYTEAMID --password $MYAPPPASSWORD --file $MYPKGFILE'The last time the altool command worked for me was on the 29 May.Any idea what is going wrong here?