Xray-core/transport/internet/headers/utp/utp.go

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package utp
import (
"context"
"encoding/binary"
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"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/dice"
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)
type UTP struct {
header byte
extension byte
connectionID uint16
}
func (*UTP) Size() int32 {
return 4
}
// Serialize implements PacketHeader.
func (u *UTP) Serialize(b []byte) {
binary.BigEndian.PutUint16(b, u.connectionID)
b[2] = u.header
b[3] = u.extension
}
// New creates a new UTP header for the given config.
func New(ctx context.Context, config interface{}) (interface{}, error) {
return &UTP{
header: 1,
extension: 0,
connectionID: dice.RollUint16(),
}, nil
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), New))
}