countOfBytesReceived
The number of bytes that the task has received from the server in the response body.
Declaration
var countOfBytesReceived: Int64 { get }Discussion
To be notified when this value changes, implement the urlSession(_:dataTask:didReceive:) delegate method (for data and upload tasks) or the urlSession(_:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:) method (for download tasks).