I get this error when I try to change variables in the closure: A C function pointer cannot be formed from a closure that captures context Is there a work around or is it possible to still change the variables within the closure? My Code: https://textnow.vip/ let callback: @convention(c) (readStream: CFWriteStream!, event: CFStreamEventType, data: UnsafeMutablePointer ) -> Void = { (readStream, event, data) -> V https://bluestacks.vip/ oid in switch event { case CFStreamEventType.ErrorOccurred: self.isError = true break case CFStreamEventType.EndEncountered: self.isRunLoop = false break https://photomath.vip/ case CFStreamEventType.HasBytesAvailable: break case CFStreamEventType.OpenCompleted: break case CFStreamEventType.CanAcceptBytes: self.bytesWritten = CFWriteStreamWrite(readStream, self.buffer, self.leftOverSize) break default: break } } let registeredEvents: CFOptionFlags = CFStreamEventType.CanAcceptBytes.rawValue | CFStreamEventType.HasBytesAvailable.rawValue | CFStreamEventType.ErrorOccurred.rawValue | CFStreamEventType.EndEncountered.rawValue | CFStreamEventType.None.rawValue var context = CFStreamClientContext(version: CFIndex(0), info: nil, retain: nil, release: nil, copyDescription: nil) let stream = CFWriteStreamCreateWithFTPURL(nil, uploadURL).takeUnretainedValue() CFWriteStreamSetClient(stream, registeredEvents, callback, &context)
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