Callback for the progress of a long-running action such as an HTTP request for a large binary object.
fraction should be a number in the [0, 1] interval, indicating how much of the action has completed.
fraction
Callback for the progress of a long-running action such as an HTTP request for a large binary object.
fractionshould be a number in the [0, 1] interval, indicating how much of the action has completed.