mirror of
https://github.com/fumiama/WireGold.git
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42 lines
690 B
Go
42 lines
690 B
Go
package head
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import (
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"encoding/binary"
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"fmt"
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)
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type PacketFlags uint16
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func (pf PacketFlags) String() string {
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return fmt.Sprintf("%04x", uint16(pf))
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}
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func (pf PacketFlags) IsValid() bool {
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return pf&0x8000 == 0
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}
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func (pf PacketFlags) DontFrag() bool {
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return pf&0x4000 == 0x4000
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}
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func (pf PacketFlags) NoFrag() bool {
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return pf == 0x4000
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}
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func (pf PacketFlags) IsSingle() bool {
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return pf == 0
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}
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func (pf PacketFlags) ZeroOffset() bool {
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return pf&0x1fff == 0
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}
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func (pf PacketFlags) Offset() uint16 {
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return uint16(pf << 3)
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}
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// Flags extract flags from raw data
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func Flags(data []byte) PacketFlags {
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return PacketFlags(binary.LittleEndian.Uint16(data[10:12]))
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}
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