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Packet83_0B.go
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Packet83_0B.go
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package peer
import (
"errors"
"fmt"
)
// Packet83_0B represents ID_JOINDATA
type Packet83_0B struct {
// Instances replicated by the server
Instances []*ReplicationInstance
}
func (thisStream *extendedReader) DecodePacket83_0B(reader PacketReader, layers *PacketLayers) (Packet83Subpacket, error) {
layer := &Packet83_0B{}
arrayLen, err := thisStream.readUint32BE()
if err != nil {
return layer, err
}
if arrayLen > 0x100000 {
return layer, errors.New("sanity check: array len too long")
}
layer.Instances = make([]*ReplicationInstance, arrayLen)
if arrayLen == 0 {
return layer, nil
}
zstdStream, err := thisStream.RegionToZStdStream()
if err != nil {
return layer, err
}
deferred := newDeferredStrings(reader)
var i uint32
for i = 0; i < arrayLen; i++ {
layer.Instances[i], err = decodeReplicationInstance(reader, &joinSerializeReader{zstdStream}, layers, deferred)
if err != nil {
return layer, err
}
}
return layer, zstdStream.resolveDeferredStrings(deferred)
}
// Serialize implements Packet83Subpacket.Serialize()
func (layer *Packet83_0B) Serialize(writer PacketWriter, stream *extendedWriter) error {
var err error
if layer.Instances == nil || len(layer.Instances) == 0 { // bail
err = stream.writeUint32BE(0)
return err
}
err = stream.writeUint32BE(uint32(len(layer.Instances)))
if err != nil {
return err
}
zstdStream := stream.wrapZstd()
deferred := newWriteDeferredStrings(writer)
for i := 0; i < len(layer.Instances); i++ {
// It is safe to take .extendedWriter here
// because the .extendedWriter will write to the compression/counter writemux
err = layer.Instances[i].Serialize(writer, &joinSerializeWriter{zstdStream.extendedWriter}, deferred)
if err != nil {
zstdStream.Close()
return err
}
}
err = zstdStream.resolveDeferredStrings(deferred)
if err != nil {
zstdStream.Close()
return err
}
return zstdStream.Close()
}
// Type implements Packet83Subpacket.Type()
func (Packet83_0B) Type() uint8 {
return 0xB
}
// TypeString implements Packet83Subpacket.TypeString()
func (Packet83_0B) TypeString() string {
return "ID_REPLIC_JOIN_DATA"
}
func (layer *Packet83_0B) String() string {
return fmt.Sprintf("ID_REPLIC_JOIN_DATA: %d items", len(layer.Instances))
}