push

var (
	// These could be checked prior to sending the request to Apple.
	ErrPayloadEmpty    = errors.New("PayloadEmpty")
	ErrPayloadTooLarge = errors.New("PayloadTooLarge")

	// Device token errors.
	ErrMissingDeviceToken = errors.New("MissingDeviceToken")
	ErrBadDeviceToken     = errors.New("BadDeviceToken")
	ErrTooManyRequests    = errors.New("TooManyRequests")

	// Header errors.
	ErrBadMessageID      = errors.New("BadMessageID")
	ErrBadExpirationDate = errors.New("BadExpirationDate")
	ErrBadPriority       = errors.New("BadPriority")
	ErrBadTopic          = errors.New("BadTopic")
	ErrInvalidPushType   = errors.New("InvalidPushType")

	// Certificate and topic errors.
	ErrBadCertificate            = errors.New("BadCertificate")
	ErrBadCertificateEnvironment = errors.New("BadCertificateEnvironment")
	ErrForbidden                 = errors.New("Forbidden")
	ErrMissingTopic              = errors.New("MissingTopic")
	ErrTopicDisallowed           = errors.New("TopicDisallowed")
	ErrUnregistered              = errors.New("Unregistered")
	ErrDeviceTokenNotForTopic    = errors.New("DeviceTokenNotForTopic")

	// These errors should never happen when using Push.
	ErrDuplicateHeaders = errors.New("DuplicateHeaders")
	ErrBadPath          = errors.New("BadPath")
	ErrMethodNotAllowed = errors.New("MethodNotAllowed")

	// Fatal server errors.
	ErrIdleTimeout         = errors.New("IdleTimeout")
	ErrShutdown            = errors.New("Shutdown")
	ErrInternalServerError = errors.New("InternalServerError")
	ErrServiceUnavailable  = errors.New("ServiceUnavailable")
)