Exemple #1
0
// DisplayMessage responds with a disconnect message to the player
// when they attempt to connect to the server.
func DisplayMessage(s protocol.Stream, message string) error {
	responsePacket := protocol.NewPacketWithID(0x00)

	chatMessage := message

	data, err := json.Marshal(chatMessage)
	if err != nil {
		return err
	}

	responsePacket.WriteString(string(data))
	err = s.WritePacket(responsePacket)
	return err
}
Exemple #2
0
// WriteHandshakeResponse writes a response with a status that will be
// displayed on the requesting player's server list menu.
func WriteHandshakeResponse(s protocol.Stream, status Status) error {
	statusResponse := statusResponse{
		Version: version{
			Name: "1lann/beacon " +
				getReleaseName(status.ProtocolNumber),
			Protocol: status.ProtocolNumber,
		},
		Players: players{
			Max:    status.MaxPlayers,
			Online: status.OnlinePlayers,
		},
		Description: status.Message,
	}

	data, err := json.Marshal(statusResponse)
	if err != nil {
		return err
	}

	responsePacket := protocol.NewPacketWithID(0x00)
	responsePacket.WriteString(string(data))
	err = s.WritePacket(responsePacket)
	return err
}
Exemple #3
0
// ReadHandshakePacket reads a handshake packet (packet ID 0) and decodes it.
func ReadHandshakePacket(s protocol.Stream) (HandshakePacket, error) {
	handshake := HandshakePacket{}
	var err error
	if handshake.ProtocolNumber, err = s.ReadVarInt(); err != nil {
		return HandshakePacket{}, err
	}

	if handshake.ServerAddress, err = s.ReadString(); err != nil {
		return HandshakePacket{}, err
	}

	if handshake.ServerPort, err = s.ReadUInt16(); err != nil {
		return HandshakePacket{}, err
	}

	handshake.NextState, err = s.ReadVarInt()
	return handshake, err
}
Exemple #4
0
// HandlePingPacket handles a ping packet used by the Minecraft client
// used to measure the round trip time of the connection.
func HandlePingPacket(s protocol.Stream, status Status) error {
	if !status.ShowConnection {
		s.ReadInt64()
		return nil
	}

	time, err := s.ReadInt64()
	if err != nil {
		return err
	}
	responsePacket := protocol.NewPacketWithID(0x01)
	responsePacket.WriteInt64(time)
	err = s.WritePacket(responsePacket)
	return err
}