problems

var (
	InternalServerError = problem.Type{
		URI:    publicationServerBase + "internal",
		Status: http.StatusInternalServerError,
		Title:  "Internal Server Error",
	}
	BadRequest = problem.Type{
		URI:    publicationServerBase + "bad-request",
		Status: http.StatusBadRequest,
		Title:  "Bad Request",
	}
	NotFound = problem.Type{
		URI:    publicationServerBase + "not-found",
		Status: http.StatusNotFound,
		Title:  "Not Found",
	}
	Forbidden = problem.Type{
		URI:    publicationServerBase + "forbidden",
		Status: http.StatusForbidden,
		Title:  "Forbidden",
	}
	BadGateway = problem.Type{
		URI:    publicationServerBase + "bad-gateway",
		Status: http.StatusBadGateway,
		Title:  "Bad Gateway",
	}
	NotImplemented = problem.Type{
		URI:    publicationServerBase + "not-implemented",
		Status: http.StatusNotImplemented,
		Title:  "Not Implemented",
	}
	RangeNotSatisfiable = problem.Type{
		URI:    publicationServerBase + "range-not-satisfiable",
		Status: http.StatusRequestedRangeNotSatisfiable,
		Title:  "Range Not Satisfiable",
	}
	ServiceUnavailable = problem.Type{
		URI:    publicationServerBase + "service-unavailable",
		Status: http.StatusServiceUnavailable,
		Title:  "Service Unavailable",
	}
	Gone = problem.Type{
		URI:    publicationServerBase + "gone",
		Status: http.StatusGone,
		Title:  "Gone",
	}

	ReadingSessionRevoked = problem.Type{
		URI:    readingSessionBase + "revoked",
		Status: http.StatusForbidden,
		Title:  "Reading session revoked",
	}
	ReadingSessionReturned = problem.Type{
		URI:    readingSessionBase + "returned",
		Status: http.StatusForbidden,
		Title:  "Reading session returned",
	}
	ReadingSessionCancelled = problem.Type{
		URI:    readingSessionBase + "cancelled",
		Status: http.StatusForbidden,
		Title:  "Reading session cancelled",
	}
	ReadingSessionExpired = problem.Type{
		URI:    readingSessionBase + "expired",
		Status: http.StatusGone,
		Title:  "Reading session expired",
	}
	DeviceLimitExceeded = problem.Type{
		URI:    readingSessionBase + "device-limit-exceeded",
		Status: http.StatusTooManyRequests,
		Title:  "Device limit exceeded",
	}
)