Global Variable

NSURLErrorFailingURLStringErrorKey

The URL which caused a load to fail.

Declaration

NSString *const NSURLErrorFailingURLStringErrorKey;

Discussion

The corresponding value is an NSString object.

This constant supersedes NSErrorFailingURLStringKey, which was deprecated starting in macOS 10.6. Both constants refer to the same value for backward-compatibility, but this symbol name has a better prefix.

See Also

Keys

NSURLErrorFailingURLErrorKey

The URL which caused a load to fail.

NSURLErrorFailingURLPeerTrustErrorKey

The state of a failed SSL handshake.

NSURLErrorBackgroundTaskCancelledReasonKey

A key in the error dictionary that provides the reason for canceling a background task.

URL Session Background Task Cancellation Reasons

Reasons that indicate why the system canceled a background task.

NSURLErrorNetworkUnavailableReasonKey

The reason the network was unavailable for a task.

NSURLErrorNetworkUnavailableReason

An enumeration of reasons why a task couldn’t satisfy networking constraints.