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Packet83_12.go
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Packet83_12.go
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package peer
import (
"fmt"
)
// Packet83_12 represents ID_HASH
type Packet83_12 struct {
HashList []uint32
SecurityTokens [3]uint64
Nonce uint32
HasSecurityTokens bool
}
func (stream *extendedReader) DecodePacket83_12(reader PacketReader, layers *PacketLayers) (Packet83Subpacket, error) {
var err error
inner := &Packet83_12{}
numItems, err := stream.readUint8()
if err != nil {
return inner, err
}
if numItems != 0xFF {
//println("noextranumitem")
inner.HasSecurityTokens = true
} else {
numItems, err = stream.readUint8()
if err != nil {
return inner, err
}
}
inner.Nonce, err = stream.readUint32BE()
if err != nil {
return inner, err
}
hashList := make([]uint32, numItems)
for i := 0; i < int(numItems); i++ {
hashList[i], err = stream.readUint32BE()
if err != nil {
return inner, err
}
}
if inner.HasSecurityTokens {
for i := 0; i < 3; i++ {
inner.SecurityTokens[i], err = stream.readUint64BE()
if err != nil {
return inner, err
}
}
}
inner.HashList = hashList
return inner, nil
}
// Serialize implements Packet83Subpacket.Serialize()
func (layer *Packet83_12) Serialize(writer PacketWriter, stream *extendedWriter) error {
if !layer.HasSecurityTokens {
err := stream.WriteByte(0xFF)
if err != nil {
return err
}
}
err := stream.WriteByte(uint8(len(layer.HashList)))
if err != nil {
return err
}
err = stream.writeUint32BE(layer.Nonce)
if err != nil {
return err
}
for _, hash := range layer.HashList {
err = stream.writeUint32BE(hash)
if err != nil {
return err
}
}
if layer.HasSecurityTokens {
for _, token := range layer.SecurityTokens {
err = stream.writeUint64BE(token)
if err != nil {
return err
}
}
}
return nil
}
// Type implements Packet83Subpacket.Type()
func (Packet83_12) Type() uint8 {
return 0x12
}
// TypeString implements Packet83Subpacket.TypeString()
func (Packet83_12) TypeString() string {
return "ID_REPLIC_HASH"
}
func (layer *Packet83_12) String() string {
return fmt.Sprintf("ID_REPLIC_HASH: %d hashes", len(layer.HashList))
}