httprange

package

v0.25.0 Latest Latest Go to latest Published: Nov 12, 2026 License: Apache-2.0 Imports: 5 Imported by: 0

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Package httprange parses and validates exact HTTP byte ranges.

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var (
	ErrInvalid       = errors.New("invalid byte range")
	ErrUnsatisfiable = errors.New("unsatisfiable byte range")
)

func UnsatisfiedContentRange(size int64) string

UnsatisfiedContentRange returns the Content-Range value for a 416 response.

func ValidateResponse(requested Range, value string, contentLength int64) (int64, error)

ValidateResponse verifies that a partial response exactly matches the requested range and body length.

type ContentRange struct {
	Range Range
	Size  int64
}

ContentRange is a satisfied HTTP Content-Range value.

func ParseContentRange(value string) (ContentRange, error)

ParseContentRange parses Content-Range: bytes N-M/TOTAL.

type Range struct {
	Start int64
	End   int64
}

Range is an exact inclusive byte range.

func New(start, end int64) (Range, error)

New constructs a validated exact range.

func ParseExact(value string) (Range, error)

ParseExact parses a single bytes=N-M range. Open-ended, suffix, and multipart ranges are deliberately rejected.

func (r Range) HeaderValue() string

HeaderValue returns the HTTP Range header value.

func (r Range) Length() int64

Length returns the number of bytes in the range.

func (r Range) ValidateSize(size int64) error

ValidateSize verifies that the entire range is within an object of size.