/
byteorder.go
36 lines (30 loc) · 1.04 KB
/
byteorder.go
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package utils
import (
"bytes"
"io"
"github.com/lucas-clemente/quic-go/internal/protocol"
)
// A ByteOrder specifies how to convert byte sequences into 16-, 32-, or 64-bit unsigned integers.
type ByteOrder interface {
ReadUintN(b io.ByteReader, length uint8) (uint64, error)
ReadUint64(io.ByteReader) (uint64, error)
ReadUint32(io.ByteReader) (uint32, error)
ReadUint16(io.ByteReader) (uint16, error)
WriteUint64(*bytes.Buffer, uint64)
WriteUint56(*bytes.Buffer, uint64)
WriteUint48(*bytes.Buffer, uint64)
WriteUint40(*bytes.Buffer, uint64)
WriteUint32(*bytes.Buffer, uint32)
WriteUint24(*bytes.Buffer, uint32)
WriteUint16(*bytes.Buffer, uint16)
ReadUfloat16(io.ByteReader) (uint64, error)
WriteUfloat16(*bytes.Buffer, uint64)
}
// GetByteOrder gets the ByteOrder (little endian or big endian) used to represent values on the wire
// from QUIC 39, values are encoded in big endian, before that in little endian
func GetByteOrder(v protocol.VersionNumber) ByteOrder {
if v < protocol.Version39 {
return LittleEndian
}
return BigEndian
}