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# URL session task priority

Constants for providing task priority hints to a host, used with the [`priority`](/documentation/Foundation/URLSessionTask/priority) property.

## Topics

### Priority constants

[`NSURLSessionTaskPriorityDefault`](/documentation/Foundation/URLSessionTask/defaultPriority)

The default URL session task priority, used implicitly for any task you have not prioritized.

[`NSURLSessionTaskPriorityLow`](/documentation/Foundation/URLSessionTask/lowPriority)

A low URL session task priority, with a floating point value above the minimum of `0` and below the default value.

[`NSURLSessionTaskPriorityHigh`](/documentation/Foundation/URLSessionTask/highPriority)

A high URL session task priority, with a floating point value above the default value and below the maximum of `1.0`.


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