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2026-07-20 19:01:03 +08:00
parent ea01b9cf99
commit ef1bf61f9f
4484 changed files with 937163 additions and 1 deletions
@@ -0,0 +1,70 @@
+package transport
+
+import (
+	"encoding/binary"
+	"time"
+)
+
+type PacketType byte
+
+const (
+	PacketTypeVoice        PacketType = 0
+	PacketTypeVoiceWhisper PacketType = 1
+	PacketTypeCommand      PacketType = 2
+	PacketTypeCommandLow   PacketType = 3
+	PacketTypePing         PacketType = 4
+	PacketTypePong         PacketType = 5
+	PacketTypeAck          PacketType = 6
+	PacketTypeAckLow       PacketType = 7
+	PacketTypeInit1        PacketType = 8
+)
+
+type PacketFlags byte
+
+const (
+	PacketFlagFragmented  PacketFlags = 0x10
+	PacketFlagNewProtocol PacketFlags = 0x20
+	PacketFlagCompressed  PacketFlags = 0x40
+	PacketFlagUnencrypted PacketFlags = 0x80
+)
+
+type Packet struct {
+	ReceivedAt   time.Time
+	Data         []byte
+	GenerationID uint32
+	ID           uint16
+	ClientID     uint16
+	TypeFlagged  byte
+}
+
+func (p *Packet) Type() PacketType {
+	return PacketType(p.TypeFlagged & 0x0F)
+}
+
+func (p *Packet) Flags() PacketFlags {
+	return PacketFlags(p.TypeFlagged & 0xF0)
+}
+
+func (p *Packet) IsUnencrypted() bool {
+	return (p.Flags() & PacketFlagUnencrypted) != 0
+}
+
+func (p *Packet) BuildC2SHeader() []byte {
+	header := make([]byte, 5)
+	binary.BigEndian.PutUint16(header[0:2], p.ID)
+	binary.BigEndian.PutUint16(header[2:4], p.ClientID)
+	header[4] = p.TypeFlagged
+
+	return header
+}
+
+func (p *Packet) ParseS2CHeader(raw []byte) {
+	p.ID = binary.BigEndian.Uint16(raw[0:2])
+	p.TypeFlagged = raw[2]
+}
+
+func (p *Packet) ParseC2SHeader(raw []byte) {
+	p.ID = binary.BigEndian.Uint16(raw[0:2])
+	p.ClientID = binary.BigEndian.Uint16(raw[2:4])
+	p.TypeFlagged = raw[4]
+}