zlib support #9
@@ -21,6 +21,8 @@ class VarInt {
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std::uint64_t m_Value;
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public:
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static const std::uint64_t MAX_VALUE = static_cast<std::uint64_t>(-1) >> 8;
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VarInt() : m_Value(0) {}
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/**
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* \brief Construct a variable integer from a value
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@@ -25,16 +25,23 @@ class Stream {
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protected:
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MessageDispatcher m_Dispatcher;
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IOInterface<IOTag> m_Interface;
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std::tuple<TOptions...> m_Options;
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using MessageBase = typename MessageDispatcher::MessageBaseType;
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public:
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Stream() {}
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Stream(IOInterface<IOTag>&& a_Interface);
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Stream(IOInterface<IOTag>&& a_Interface, TOptions&&... a_Options);
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Stream(Stream&& a_Stream);
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void RecieveMessages(const TOptions&... a_Options);
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void SendMessage(const MessageBase& a_Message, const TOptions&... a_Options);
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void RecieveMessages();
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void SendMessage(const MessageBase& a_Message);
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template <typename TOption>
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TOption& GetOption() {
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return std::get<TOption>(m_Options);
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}
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MessageDispatcher& GetDispatcher() {
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return m_Dispatcher;
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@@ -37,8 +37,8 @@ struct MessageEncapsulatorPack<TOption, TOptions...> {
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namespace io {
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template <typename IOTag, typename MessageDispatcher, typename MessageFactory, typename... TOptions>
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Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::Stream(IOInterface<IOTag>&& a_Interface) :
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m_Interface(std::move(a_Interface)) {}
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Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::Stream(IOInterface<IOTag>&& a_Interface, TOptions&&... a_Options) :
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m_Interface(std::move(a_Interface)), m_Options(std::make_tuple<TOptions...>(std::move(a_Options)...)) {}
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template <typename IOTag, typename MessageDispatcher, typename MessageFactory, typename... TOptions>
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Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::Stream(
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@@ -46,17 +46,18 @@ Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::Stream(
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m_Dispatcher(std::move(a_Stream.m_Dispatcher)), m_Interface(std::move(a_Stream.m_Interface)) {}
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template <typename IOTag, typename MessageDispatcher, typename MessageFactory, typename... TOptions>
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void Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::SendMessage(
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const MessageBase& a_Message, const TOptions&... a_Options) {
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void Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::SendMessage(const MessageBase& a_Message) {
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DataBuffer data = a_Message.Write();
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DataBuffer encapsulated = Encapsulate(data, a_Options...);
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DataBuffer encapsulated = std::apply([&data](const auto&... a_Options) {
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return Encapsulate(data, a_Options...);
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}, m_Options);
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DataBuffer finalData;
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finalData << VarInt{encapsulated.GetSize()} << encapsulated;
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m_Interface.Write(finalData);
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}
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template <typename IOTag, typename MessageDispatcher, typename MessageFactory, typename... TOptions>
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void Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::RecieveMessages(const TOptions&... a_Options) {
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void Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::RecieveMessages() {
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while (true) {
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// reading the first VarInt part byte by byte
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std::uint64_t lenghtValue = 0;
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@@ -92,7 +93,9 @@ void Stream<IOTag, MessageDispatcher, MessageFactory, TOptions...>::RecieveMessa
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DataBuffer buffer;
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buffer = m_Interface.Read(lenghtValue);
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buffer = Decapsulate(buffer, lenghtValue, a_Options...);
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buffer = std::apply([&buffer, lenghtValue](const auto&... a_Options) {
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return Decapsulate(buffer, lenghtValue, a_Options...);
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}, m_Options);
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VarInt packetType;
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buffer >> packetType;
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@@ -77,12 +77,13 @@ DataBuffer Decompress(DataBuffer& buffer, std::uint64_t packetLength) {
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namespace io {
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DataBuffer MessageEncapsulator<option::ZlibCompress>::Encapsulate(const DataBuffer& a_Data, const option::ZlibCompress& a_Option) {
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return a_Option.m_Enabled ? zlib::Compress(a_Data, a_Option.m_CompressionThreshold) : a_Data;
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static constexpr std::size_t MAX_COMPRESS_THRESHOLD = VarInt::MAX_VALUE;
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return zlib::Compress(a_Data, a_Option.m_Enabled ? a_Option.m_CompressionThreshold : MAX_COMPRESS_THRESHOLD);
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}
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DataBuffer MessageEncapsulator<option::ZlibCompress>::Decapsulate(
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DataBuffer& a_Data, std::size_t a_Length, const option::ZlibCompress& a_Option) {
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return a_Option.m_Enabled ? zlib::Decompress(a_Data, a_Length) : a_Data;
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return zlib::Decompress(a_Data, a_Length);
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}
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} // namespace io
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@@ -22,21 +22,21 @@ using FileStream = sp::io::Stream<sp::io::FileTag, sp::PacketDispatcher, sp::Pac
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int main() {
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auto handler = std::make_shared<CustomPacketHandler>();
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FileStream stream(sp::io::File{"test.txt", sp::io::FileTag::In | sp::io::FileTag::Out});
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FileStream stream(sp::io::File{"test.txt", sp::io::FileTag::In | sp::io::FileTag::Out}, {});
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stream.GetDispatcher().RegisterHandler(PacketId::Disconnect, handler);
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stream.GetDispatcher().RegisterHandler(PacketId::KeepAlive, handler);
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auto zlibOptions = sp::option::ZlibCompress{};
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stream.SendMessage(KeepAlivePacket{96}, zlibOptions);
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stream.SendMessage(KeepAlivePacket{69}, zlibOptions);
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stream.SendMessage(
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DisconnectPacket{
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stream.SendMessage(KeepAlivePacket{96});
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stream.SendMessage(KeepAlivePacket{69});
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stream.SendMessage(DisconnectPacket{
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"This is in the "
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"fiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiile !"},
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zlibOptions);
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"fiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiile !"});
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stream.GetOption<sp::option::ZlibCompress>().m_Enabled = false;
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stream.SendMessage(DisconnectPacket{
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"This is in the "
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"fiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiile !"});
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stream.RecieveMessages(zlibOptions);
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stream.RecieveMessages();
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return 0;
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}
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