Fix Poke timeout, input CommandLow handling, and add Poke Popup

internal/client/packet.go

@@ -55,6 +55,46 @@ func (c *Client) handlePacket(pkt *protocol.Packet) error {
 
 		c.Conn.SendPacket(ack)
 
+		return c.handleCommand(pkt)
+	case protocol.PacketTypeCommandLow:
+		// Send ACK Low
+		ackData := make([]byte, 2)
+		binary.BigEndian.PutUint16(ackData, pkt.Header.PacketID)
+
+		ack := protocol.NewPacket(protocol.PacketTypeAckLow, ackData)
+		// Spec/ts3j: AckLow has its own counter
+		c.AckLowPacketID++
+		ack.Header.PacketID = c.AckLowPacketID
+		ack.Header.ClientID = c.ClientID
+		// ACKs usually don't have NewProtocol flag set in Header byte
+		ack.Header.Type &= ^uint8(protocol.PacketFlagNewProtocol)
+
+		// ACKs for Command packets after handshake must be encrypted
+		key := protocol.HandshakeKey
+		nonce := protocol.HandshakeNonce
+
+		if c.Handshake != nil && c.Handshake.Step >= 6 && len(c.Handshake.SharedIV) > 0 {
+			crypto := &protocol.CryptoState{
+				SharedIV:     c.Handshake.SharedIV,
+				SharedMac:    c.Handshake.SharedMac,
+				GenerationID: 0,
+			}
+			key, nonce = crypto.GenerateKeyNonce(&ack.Header, true) // Client->Server=true
+		}
+
+		// Meta for Client->Server: PID(2) + CID(2) + PT(1) = 5 bytes
+		meta := make([]byte, 5)
+		binary.BigEndian.PutUint16(meta[0:2], ack.Header.PacketID)
+		binary.BigEndian.PutUint16(meta[2:4], ack.Header.ClientID)
+		meta[4] = ack.Header.Type
+
+		encData, mac, _ := protocol.EncryptEAX(key, nonce, meta, ack.Data)
+		ack.Data = encData
+		copy(ack.Header.MAC[:], mac)
+		// log.Printf("Sending ACK Low for server CommandLow PID=%d", pkt.Header.PacketID)
+
+		c.Conn.SendPacket(ack)
+
 		return c.handleCommand(pkt)
 	case protocol.PacketTypeVoice:
 		c.handleVoice(pkt)