CoreFoundation iOS 11.4 to 12.0 API Differences

	Declaration
From	typedef void (*CFReadStreamClientCallBack)(CFReadStreamRef stream, CFStreamEventType type, void *clientCallBackInfo)
To	typedef void (*CFReadStreamClientCallBack)(CFReadStreamRef _Null_unspecified stream, CFStreamEventType type, void * _Null_unspecified clientCallBackInfo)

	Declaration
From	typedef void (*CFWriteStreamClientCallBack)(CFWriteStreamRef stream, CFStreamEventType type, void *clientCallBackInfo)
To	typedef void (*CFWriteStreamClientCallBack)(CFWriteStreamRef _Null_unspecified stream, CFStreamEventType type, void * _Null_unspecified clientCallBackInfo)

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertyDataWritten
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertyDataWritten

	Declaration
From	CFReadStreamRef CFReadStreamCreateWithBytesNoCopy(CFAllocatorRef alloc, const UInt8 *bytes, CFIndex length, CFAllocatorRef bytesDeallocator)
To	CFReadStreamRef _Null_unspecified CFReadStreamCreateWithBytesNoCopy(CFAllocatorRef _Null_unspecified alloc, const UInt8 * _Null_unspecified bytes, CFIndex length, CFAllocatorRef _Null_unspecified bytesDeallocator)

	Declaration
From	CFWriteStreamRef CFWriteStreamCreateWithBuffer(CFAllocatorRef alloc, UInt8 *buffer, CFIndex bufferCapacity)
To	CFWriteStreamRef _Null_unspecified CFWriteStreamCreateWithBuffer(CFAllocatorRef _Null_unspecified alloc, UInt8 * _Null_unspecified buffer, CFIndex bufferCapacity)

	Declaration
From	CFWriteStreamRef CFWriteStreamCreateWithAllocatedBuffers(CFAllocatorRef alloc, CFAllocatorRef bufferAllocator)
To	CFWriteStreamRef _Null_unspecified CFWriteStreamCreateWithAllocatedBuffers(CFAllocatorRef _Null_unspecified alloc, CFAllocatorRef _Null_unspecified bufferAllocator)

	Declaration
From	CFReadStreamRef CFReadStreamCreateWithFile(CFAllocatorRef alloc, CFURLRef fileURL)
To	CFReadStreamRef _Null_unspecified CFReadStreamCreateWithFile(CFAllocatorRef _Null_unspecified alloc, CFURLRef _Null_unspecified fileURL)

	Declaration
From	CFWriteStreamRef CFWriteStreamCreateWithFile(CFAllocatorRef alloc, CFURLRef fileURL)
To	CFWriteStreamRef _Null_unspecified CFWriteStreamCreateWithFile(CFAllocatorRef _Null_unspecified alloc, CFURLRef _Null_unspecified fileURL)

	Declaration
From	void CFStreamCreateBoundPair(CFAllocatorRef alloc, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream, CFIndex transferBufferSize)
To	void CFStreamCreateBoundPair(CFAllocatorRef _Null_unspecified alloc, CFReadStreamRef _Null_unspecified * _Null_unspecified readStream, CFWriteStreamRef _Null_unspecified * _Null_unspecified writeStream, CFIndex transferBufferSize)

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertyAppendToFile
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertyAppendToFile

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertyFileCurrentOffset
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertyFileCurrentOffset

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertySocketNativeHandle
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertySocketNativeHandle

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertySocketRemoteHostName
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertySocketRemoteHostName

	Declaration
From	const CFStreamPropertyKey kCFStreamPropertySocketRemotePortNumber
To	CFStreamPropertyKey _Null_unspecified const kCFStreamPropertySocketRemotePortNumber

	Declaration
From	void CFStreamCreatePairWithSocket(CFAllocatorRef alloc, CFSocketNativeHandle sock, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream)
To	void CFStreamCreatePairWithSocket(CFAllocatorRef _Null_unspecified alloc, CFSocketNativeHandle sock, CFReadStreamRef _Null_unspecified * _Null_unspecified readStream, CFWriteStreamRef _Null_unspecified * _Null_unspecified writeStream)

	Declaration
From	void CFStreamCreatePairWithSocketToHost(CFAllocatorRef alloc, CFStringRef host, UInt32 port, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream)
To	void CFStreamCreatePairWithSocketToHost(CFAllocatorRef _Null_unspecified alloc, CFStringRef _Null_unspecified host, UInt32 port, CFReadStreamRef _Null_unspecified * _Null_unspecified readStream, CFWriteStreamRef _Null_unspecified * _Null_unspecified writeStream)

	Declaration
From	void CFStreamCreatePairWithPeerSocketSignature(CFAllocatorRef alloc, const CFSocketSignature *signature, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream)
To	void CFStreamCreatePairWithPeerSocketSignature(CFAllocatorRef _Null_unspecified alloc, const CFSocketSignature * _Null_unspecified signature, CFReadStreamRef _Null_unspecified * _Null_unspecified readStream, CFWriteStreamRef _Null_unspecified * _Null_unspecified writeStream)

	Declaration
From	CFStreamStatus CFReadStreamGetStatus(CFReadStreamRef stream)
To	CFStreamStatus CFReadStreamGetStatus(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	CFStreamStatus CFWriteStreamGetStatus(CFWriteStreamRef stream)
To	CFStreamStatus CFWriteStreamGetStatus(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	CFErrorRef CFReadStreamCopyError(CFReadStreamRef stream)
To	CFErrorRef _Null_unspecified CFReadStreamCopyError(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	CFErrorRef CFWriteStreamCopyError(CFWriteStreamRef stream)
To	CFErrorRef _Null_unspecified CFWriteStreamCopyError(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	Boolean CFReadStreamOpen(CFReadStreamRef stream)
To	Boolean CFReadStreamOpen(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	Boolean CFWriteStreamOpen(CFWriteStreamRef stream)
To	Boolean CFWriteStreamOpen(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	void CFReadStreamClose(CFReadStreamRef stream)
To	void CFReadStreamClose(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	void CFWriteStreamClose(CFWriteStreamRef stream)
To	void CFWriteStreamClose(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	Boolean CFReadStreamHasBytesAvailable(CFReadStreamRef stream)
To	Boolean CFReadStreamHasBytesAvailable(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	CFIndex CFReadStreamRead(CFReadStreamRef stream, UInt8 *buffer, CFIndex bufferLength)
To	CFIndex CFReadStreamRead(CFReadStreamRef _Null_unspecified stream, UInt8 * _Null_unspecified buffer, CFIndex bufferLength)

	Declaration
From	const UInt8 *CFReadStreamGetBuffer(CFReadStreamRef stream, CFIndex maxBytesToRead, CFIndex *numBytesRead)
To	const UInt8 * _Null_unspecified CFReadStreamGetBuffer(CFReadStreamRef _Null_unspecified stream, CFIndex maxBytesToRead, CFIndex * _Null_unspecified numBytesRead)

	Declaration
From	Boolean CFWriteStreamCanAcceptBytes(CFWriteStreamRef stream)
To	Boolean CFWriteStreamCanAcceptBytes(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	CFIndex CFWriteStreamWrite(CFWriteStreamRef stream, const UInt8 *buffer, CFIndex bufferLength)
To	CFIndex CFWriteStreamWrite(CFWriteStreamRef _Null_unspecified stream, const UInt8 * _Null_unspecified buffer, CFIndex bufferLength)

	Declaration
From	CFTypeRef CFReadStreamCopyProperty(CFReadStreamRef stream, CFStreamPropertyKey propertyName)
To	CFTypeRef _Null_unspecified CFReadStreamCopyProperty(CFReadStreamRef _Null_unspecified stream, CFStreamPropertyKey _Null_unspecified propertyName)

	Declaration
From	CFTypeRef CFWriteStreamCopyProperty(CFWriteStreamRef stream, CFStreamPropertyKey propertyName)
To	CFTypeRef _Null_unspecified CFWriteStreamCopyProperty(CFWriteStreamRef _Null_unspecified stream, CFStreamPropertyKey _Null_unspecified propertyName)

	Declaration
From	Boolean CFReadStreamSetProperty(CFReadStreamRef stream, CFStreamPropertyKey propertyName, CFTypeRef propertyValue)
To	Boolean CFReadStreamSetProperty(CFReadStreamRef _Null_unspecified stream, CFStreamPropertyKey _Null_unspecified propertyName, CFTypeRef _Null_unspecified propertyValue)

	Declaration
From	Boolean CFWriteStreamSetProperty(CFWriteStreamRef stream, CFStreamPropertyKey propertyName, CFTypeRef propertyValue)
To	Boolean CFWriteStreamSetProperty(CFWriteStreamRef _Null_unspecified stream, CFStreamPropertyKey _Null_unspecified propertyName, CFTypeRef _Null_unspecified propertyValue)

	Declaration
From	Boolean CFReadStreamSetClient(CFReadStreamRef stream, CFOptionFlags streamEvents, CFReadStreamClientCallBack clientCB, CFStreamClientContext *clientContext)
To	Boolean CFReadStreamSetClient(CFReadStreamRef _Null_unspecified stream, CFOptionFlags streamEvents, CFReadStreamClientCallBack _Null_unspecified clientCB, CFStreamClientContext * _Null_unspecified clientContext)

	Declaration
From	Boolean CFWriteStreamSetClient(CFWriteStreamRef stream, CFOptionFlags streamEvents, CFWriteStreamClientCallBack clientCB, CFStreamClientContext *clientContext)
To	Boolean CFWriteStreamSetClient(CFWriteStreamRef _Null_unspecified stream, CFOptionFlags streamEvents, CFWriteStreamClientCallBack _Null_unspecified clientCB, CFStreamClientContext * _Null_unspecified clientContext)

	Declaration
From	void CFReadStreamScheduleWithRunLoop(CFReadStreamRef stream, CFRunLoopRef runLoop, CFRunLoopMode runLoopMode)
To	void CFReadStreamScheduleWithRunLoop(CFReadStreamRef _Null_unspecified stream, CFRunLoopRef _Null_unspecified runLoop, CFRunLoopMode _Null_unspecified runLoopMode)

	Declaration
From	void CFWriteStreamScheduleWithRunLoop(CFWriteStreamRef stream, CFRunLoopRef runLoop, CFRunLoopMode runLoopMode)
To	void CFWriteStreamScheduleWithRunLoop(CFWriteStreamRef _Null_unspecified stream, CFRunLoopRef _Null_unspecified runLoop, CFRunLoopMode _Null_unspecified runLoopMode)

	Declaration
From	void CFReadStreamUnscheduleFromRunLoop(CFReadStreamRef stream, CFRunLoopRef runLoop, CFRunLoopMode runLoopMode)
To	void CFReadStreamUnscheduleFromRunLoop(CFReadStreamRef _Null_unspecified stream, CFRunLoopRef _Null_unspecified runLoop, CFRunLoopMode _Null_unspecified runLoopMode)

	Declaration
From	void CFWriteStreamUnscheduleFromRunLoop(CFWriteStreamRef stream, CFRunLoopRef runLoop, CFRunLoopMode runLoopMode)
To	void CFWriteStreamUnscheduleFromRunLoop(CFWriteStreamRef _Null_unspecified stream, CFRunLoopRef _Null_unspecified runLoop, CFRunLoopMode _Null_unspecified runLoopMode)

	Declaration
From	void CFReadStreamSetDispatchQueue(CFReadStreamRef stream, dispatch_queue_t q)
To	void CFReadStreamSetDispatchQueue(CFReadStreamRef _Null_unspecified stream, dispatch_queue_t _Null_unspecified q)

	Declaration
From	void CFWriteStreamSetDispatchQueue(CFWriteStreamRef stream, dispatch_queue_t q)
To	void CFWriteStreamSetDispatchQueue(CFWriteStreamRef _Null_unspecified stream, dispatch_queue_t _Null_unspecified q)

	Declaration
From	dispatch_queue_t CFReadStreamCopyDispatchQueue(CFReadStreamRef stream)
To	dispatch_queue_t _Null_unspecified CFReadStreamCopyDispatchQueue(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	dispatch_queue_t CFWriteStreamCopyDispatchQueue(CFWriteStreamRef stream)
To	dispatch_queue_t _Null_unspecified CFWriteStreamCopyDispatchQueue(CFWriteStreamRef _Null_unspecified stream)

	Declaration
From	CFStreamError CFReadStreamGetError(CFReadStreamRef stream)
To	CFStreamError CFReadStreamGetError(CFReadStreamRef _Null_unspecified stream)

	Declaration
From	CFStreamError CFWriteStreamGetError(CFWriteStreamRef stream)
To	CFStreamError CFWriteStreamGetError(CFWriteStreamRef _Null_unspecified stream)