refactor DataBuffer

include/sp/common/DataBuffer.h

@@ -10,9 +10,11 @@
 #include <cassert>
 #include <cstdint>
 #include <cstring>
+#include <list>
 #include <map>
-#include <sp/common/VarInt.h>
+#include <memory>
 #include <sp/common/ByteSwapping.h>
+#include <sp/common/VarInt.h>
 #include <string>
 #include <vector>
 
@@ -59,67 +61,6 @@ class DataBuffer {
 		std::memcpy(&m_Buffer[end_pos], &a_Data, size);
 	}
 
-	/**
-	 * \brief Append data to the buffer (converted to big endian)
-	 */
-	template <typename T>
-	DataBuffer& operator<<(T a_Data) {
-		SwapBytes(a_Data);
-		Append(a_Data);
-		return *this;
-	}
-
-	/**
-	 * \brief Append a string to the buffer
-	 * \warning Don't use it for binary data !
-	 * \param str The string to append
-	 */
-	DataBuffer& operator<<(const std::string& str);
-
-	/**
-	 * \brief Append data to the buffer from another const buffer
-	 * \param data The buffer to append
-	 */
-	DataBuffer& operator<<(const DataBuffer& data);
-
-	/**
-	 * \brief Append a vector to the buffer by first writing the size
-	 * \param data The vector to append
-	 */
-	template <typename T>
-	DataBuffer& operator<<(const std::vector<T>& data) {
-		*this << VarInt{data.size()};
-		for (const auto& element : data) {
-			*this << element;
-		}
-		return *this;
-	}
-
-	/**
-	 * \brief Append a map to the buffer by first writing the size
-	 * \param data The map to append
-	 */
-	template <typename K, typename V>
-	DataBuffer& operator<<(const std::map<K, V>& data) {
-		*this << VarInt{data.size()};
-		for (const auto& element : data) {
-			*this << element.first << element.second;
-		}
-		return *this;
-	}
-
-	/**
-	 * \brief Append an array to the buffer by first writing the size
-	 * \param data The buffer to append
-	 */
-	template <typename T, std::size_t Size>
-	DataBuffer& operator<<(const std::array<T, Size>& data) {
-		for (const auto& element : data) {
-			*this << element;
-		}
-		return *this;
-	}
-
 	/**
 	 * \brief Read data into a_Data
 	 * \warning No endian checks
@@ -131,75 +72,6 @@ class DataBuffer {
 		m_ReadOffset += sizeof(T);
 	}
 
-	/**
-	 * \brief Read some data from the buffer and assign to desired variable
-	 */
-	template <typename T>
-	DataBuffer& operator>>(T& a_Data) {
-		Read(a_Data);
-		SwapBytes(a_Data);
-		return *this;
-	}
-
-	/**
-	 * \brief Read some data from the buffer and assign to the new buffer
-	 * \param data The buffer to assign
-	 */
-	DataBuffer& operator>>(DataBuffer& data);
-
-	/**
-	 * \brief Read a string from the buffer
-	 * \param str The string to assign in the new buffer
-	 * \warning Don't use it for binary data !
-	 */
-	DataBuffer& operator>>(std::string& str);
-
-	/**
-	 * \brief Read a vector (size + data) from the buffer
-	 * \pre The vector is assumed to be empty
-	 */
-	template <typename T>
-	DataBuffer& operator>>(std::vector<T>& data) {
-		VarInt arraySize;
-		*this >> arraySize;
-		for (std::size_t i = 0; i < arraySize.GetValue(); i++) {
-			T newElement;
-			*this >> newElement;
-			data.push_back(newElement);
-		}
-		return *this;
-	}
-
-	/**
-	 * \brief Read a map (size + data) from the buffer
-	 * \pre The map is assumed to be empty
-	 */
-	template <typename K, typename V>
-	DataBuffer& operator>>(std::map<K, V>& data) {
-		VarInt mapSize;
-		*this >> mapSize;
-		for (std::size_t i = 0; i < mapSize.GetValue(); i++) {
-			K newKey;
-			V newValue;
-			*this >> newKey >> newValue;
-			data.emplace(newKey, newValue);
-		}
-		return *this;
-	}
-
-	/**
-	 * \brief Read an array from the buffer
-	 */
-	template <std::size_t Size, typename T>
-	DataBuffer& operator>>(std::array<T, Size>& data) {
-		for (std::size_t i = 0; i < Size; i++) {
-			T newElement;
-			*this >> newElement;
-			data[i] = newElement;
-		}
-		return *this;
-	}
-
 	/**
 	 * \brief Write some data to the buffer
 	 * \param buffer The buffer to write
@@ -251,7 +123,6 @@ class DataBuffer {
 		m_Buffer.reserve(amount);
 	}
 
-
 	/**
 	 * \brief Clear the buffer
 	 */
@@ -333,6 +204,8 @@ class DataBuffer {
 		return m_Buffer == other.m_Buffer;
 	}
 
+	void insert(iterator a_DestBegin, const_iterator a_SrcBegin, const_iterator a_SrcEnd);
+
 	iterator begin();
 	iterator end();
 	const_iterator begin() const;
@@ -340,8 +213,9 @@ class DataBuffer {
 };
 
 /**
- * \brief Operator << to write a DataBuffer to an ostream
+ * \brief Append data to the buffer from another const buffer
+ * \param data The buffer to append
  */
-std::ostream& operator<<(std::ostream& os, const DataBuffer& buffer);
+DataBuffer& operator<<(DataBuffer& a_Buffer, const DataBuffer& data);
 
 }  // namespace sp

include/sp/common/DataBufferOperators.h

@@ -0,0 +1,268 @@
+#pragma once
+
+#include <sp/common/DataBuffer.h>
+#include <boost/pfr.hpp>
+
+namespace sp {
+
+template<typename T>
+using is_default_serializable = std::bool_constant<(std::is_class_v<T> && std::is_aggregate_v<T>) || !std::is_class_v<T>>;
+
+template<typename T>
+static constexpr bool is_default_serializable_v = is_default_serializable<T>::value;
+
+
+/**
+ * \brief Append data to the buffer (converted to big endian)
+ */
+template <typename T, typename = typename std::enable_if_t<is_default_serializable_v<T>>>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const T& a_Data) {
+	if constexpr (std::is_class_v<T>) {
+		boost::pfr::for_each_field(a_Data, [&a_Buffer](const auto& a_Field) { a_Buffer << a_Field; });
+	} else {
+		a_Buffer.Append(a_Data);
+		SwapBytes(a_Buffer.data() + a_Buffer.GetReadOffset() - sizeof(T), a_Buffer.data() + a_Buffer.GetReadOffset());
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Append a string to the buffer
+ * \warning Don't use it for binary data !
+ * \param str The string to append
+ */
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::string& str);
+
+/**
+ * \brief Operator << to write a DataBuffer to an ostream
+ */
+std::ostream& operator<<(std::ostream& os, const DataBuffer& buffer);
+
+/**
+ * \brief Append a pointer to the buffer
+ * \param data The data to append
+ */
+template <typename T, typename = typename std::enable_if_t<!std::is_abstract_v<T>>>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::shared_ptr<T>& data) {
+	return a_Buffer << *data;
+}
+
+/**
+ * \brief Append a pointer to the buffer
+ * \param data The data to append
+ */
+template <typename T, typename = typename std::enable_if_t<!std::is_abstract_v<T>>>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::unique_ptr<T>& data) {
+	return a_Buffer << *data;
+}
+
+/**
+ * \brief Append a vector to the buffer by first writing the size
+ * \param data The vector to append
+ */
+template <typename T>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::vector<T>& data) {
+	a_Buffer << VarInt{data.size()};
+	for (const auto& element : data) {
+		a_Buffer << element;
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Append a list to the buffer by first writing the size
+ * \param data The list to append
+ */
+template <typename T>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::list<T>& data) {
+	a_Buffer << VarInt{data.size()};
+	for (const auto& element : data) {
+		a_Buffer << element;
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Append a map to the buffer by first writing the size
+ * \param data The map to append
+ */
+template <typename K, typename V>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::map<K, V>& data) {
+	a_Buffer << VarInt{data.size()};
+	for (const auto& [key, value] : data) {
+		a_Buffer << key << value;
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Append a map to the buffer by first writing the size
+ * \param data The map to append
+ */
+template <typename K, typename V>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::unordered_map<K, V>& data) {
+	a_Buffer << VarInt{data.size()};
+	for (const auto& [key, value] : data) {
+		a_Buffer << key << value;
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Append a pair to the buffer
+ * \param data The pair to append
+ */
+template <typename K, typename V>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::pair<K, V>& data) {
+	return a_Buffer << data.first << data.second;
+}
+
+/**
+ * \brief Append an array to the buffer by first writing the size
+ * \param data The buffer to append
+ */
+template <typename T, std::size_t Size>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::array<T, Size>& data) {
+	for (const auto& element : data) {
+		a_Buffer << element;
+	}
+	return a_Buffer;
+}
+
+
+
+
+
+/**
+ * \brief Read some data from the buffer and assign to desired variable
+ */
+template <typename T, typename = typename std::enable_if_t<is_default_serializable_v<T>>>
+DataBuffer& operator>>(DataBuffer& a_Buffer, T& a_Data) {
+	if constexpr (std::is_class_v<T>) {
+		boost::pfr::for_each_field(a_Data, [&a_Buffer](auto& a_Field) { a_Buffer >> a_Field; });
+	} else {
+		a_Buffer.Read(a_Data);
+		SwapBytes(a_Data);
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Read some data from the buffer and assign to the new buffer
+ * \param data The buffer to assign
+ */
+DataBuffer& operator>>(DataBuffer& a_Buffer, DataBuffer& data);
+
+/**
+ * \brief Read a string from the buffer
+ * \param str The string to assign in the new buffer
+ * \warning Don't use it for binary data !
+ */
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::string& str);
+
+/**
+ * \brief Read a pointer
+ */
+template <typename T, typename = typename std::enable_if_t<!std::is_abstract_v<T>>>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::shared_ptr<T>& data) {
+	data = std::make_shared<T>();
+	return a_Buffer >> *data;
+}
+
+/**
+ * \brief Read a pointer
+ */
+template <typename T, typename = typename std::enable_if_t<!std::is_abstract_v<T>>>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::unique_ptr<T>& data) {
+	data = std::make_unique<T>();
+	return a_Buffer >> *data;
+}
+
+/**
+ * \brief Read a vector (size + data) from the buffer
+ * \pre The vector is assumed to be empty
+ */
+template <typename T>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::vector<T>& data) {
+	VarInt arraySize;
+	a_Buffer >> arraySize;
+	for (std::size_t i = 0; i < arraySize.GetValue(); i++) {
+		T newElement;
+		a_Buffer >> newElement;
+		data.push_back(newElement);
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Read a list (size + data) from the buffer
+ * \pre The list is assumed to be empty
+ */
+template <typename T>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::list<T>& data) {
+	VarInt arraySize;
+	a_Buffer >> arraySize;
+	for (std::size_t i = 0; i < arraySize.GetValue(); i++) {
+		T newElement;
+		a_Buffer >> newElement;
+		data.push_back(newElement);
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Read a map (size + data) from the buffer
+ * \pre The map is assumed to be empty
+ */
+template <typename K, typename V>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::map<K, V>& data) {
+	VarInt mapSize;
+	a_Buffer >> mapSize;
+	for (std::size_t i = 0; i < mapSize.GetValue(); i++) {
+		K newKey;
+		V newValue;
+		a_Buffer >> newKey >> newValue;
+		data.emplace(newKey, newValue);
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Read a map (size + data) from the buffer
+ * \pre The map is assumed to be empty
+ */
+template <typename K, typename V>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::unordered_map<K, V>& data) {
+	VarInt mapSize;
+	a_Buffer >> mapSize;
+	for (std::size_t i = 0; i < mapSize.GetValue(); i++) {
+		K newKey;
+		V newValue;
+		a_Buffer >> newKey >> newValue;
+		data.emplace(newKey, newValue);
+	}
+	return a_Buffer;
+}
+
+/**
+ * \brief Read a pair
+ */
+template <typename K, typename V>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::pair<K, V>& data) {
+	return a_Buffer >> data.first >> data.second;
+}
+
+/**
+ * \brief Read an array from the buffer
+ */
+template <std::size_t Size, typename T>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::array<T, Size>& data) {
+	for (std::size_t i = 0; i < Size; i++) {
+		T newElement;
+		a_Buffer >> newElement;
+		data[i] = newElement;
+	}
+	return a_Buffer;
+}
+
+}  // namespace sp

include/sp/extensions/tcp/TcpSocket.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include <sp/common/NonCopyable.h>
 #include <sp/io/IoInterface.h>
 
 namespace sp {

include/sp/io/MessageIO.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#include <boost/pfr.hpp>
 #include <sp/io/BitBuffer.h>
+#include <sp/common/DataBufferOperators.h>
 
 namespace sp {
 namespace details {

include/sp/io/MessageStream.inl

@@ -8,7 +8,10 @@ namespace sp {
 template <typename TMessageFactory>
 DataBuffer MessageStream<TMessageFactory>::ReadAndDecapsulate() {
 	VarInt messageLength;
-	messageLength.Read([this](std::uint8_t& data) { m_Stream->Read(1) >> data; });
+	messageLength.Read([this](std::uint8_t& data) {
+		DataBuffer buffer = m_Stream->Read(1);
+		data = *buffer.data();
+	});
 	std::size_t amount = messageLength.GetValue();
 	DataBuffer buffer = m_Stream->Read(amount);
 	

include/sp/io/SerializableMessage.h

@@ -0,0 +1,83 @@
+#pragma once
+
+#include <sp/common/DataBuffer.h>
+
+namespace sp {
+
+template <typename TMessageFactory>
+class SerializableMessage {
+	using MessageBaseType = typename TMessageFactory::MessageBaseType;
+	using HandlerType = typename MessageBaseType::HandlerType;
+	using MessageIdType = typename MessageBaseType::MessageIdType;
+
+  private:
+	std::unique_ptr<MessageBaseType> m_Message;
+
+  public:
+	SerializableMessage(std::unique_ptr<MessageBaseType>&& a_MessagePtr) : m_Message(std::move(a_MessagePtr)) {}
+
+	operator MessageBaseType&() {
+		return *m_Message;
+	}
+
+	SerializableMessage& operator=(std::unique_ptr<MessageBaseType>&& a_MessagePtr) {
+		m_Message = std::move(a_MessagePtr);
+		return *this;
+	}
+
+	MessageIdType GetId() const {
+		return m_Message->GetId();
+	}
+
+	void Dispatch(HandlerType& handler) const {
+		m_Message->Dispatch(handler);
+	}
+
+	void Read(DataBuffer& a_Buffer) {
+		m_Message->Read(a_Buffer);
+	}
+
+	DataBuffer Write() const {
+		return m_Message->Write();
+	}
+};
+
+template <typename TMessageFactory>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::unique_ptr<SerializableMessage<TMessageFactory>>& a_Message) {
+	return a_Buffer << VarInt{static_cast<std::uint64_t>(a_Message->GetId())} << a_Message->Write();
+}
+
+template <typename TMessageFactory>
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::shared_ptr<SerializableMessage<TMessageFactory>>& a_Message) {
+	return a_Buffer << VarInt{static_cast<std::uint64_t>(a_Message->GetId())} << a_Message->Write();
+}
+
+template <typename TMessageFactory>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::unique_ptr<SerializableMessage<TMessageFactory>>& a_Message) {
+	using MsgId = typename TMessageFactory::IdType;
+	static TMessageFactory factory;
+
+	VarInt msgId;
+	a_Buffer >> msgId;
+
+	a_Message = std::make_unique<SerializableMessage<TMessageFactory>>(std::move(factory.CreateMessage(MsgId(msgId.GetValue()))));
+	a_Message->Read(a_Buffer);
+
+	return a_Buffer;
+}
+
+template <typename TMessageFactory>
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::shared_ptr<SerializableMessage<TMessageFactory>>& a_Message) {
+	using MsgId = typename TMessageFactory::IdType;
+	static TMessageFactory factory;
+
+	VarInt msgId;
+	a_Buffer >> msgId;
+
+	a_Message = std::make_shared<SerializableMessage<TMessageFactory>>(std::move(factory.CreateMessage(MsgId(msgId.GetValue()))));
+	a_Message->Read(a_Buffer);
+
+	return a_Buffer;
+}
+
+}  // namespace sp

include/sp/protocol/ConcreteMessage.h

@@ -13,7 +13,7 @@ class ConcreteMessage : public MessageBase {
 	using HandlerType = typename MessageBase::HandlerType;
 
 	template <typename... T>
-	ConcreteMessage(const T&... args) : m_Data{args...} {}
+	ConcreteMessage(T&&... args) : m_Data{std::move(args)...} {}
 
 	virtual ~ConcreteMessage() {}
 

src/sp/common/DataBuffer.cpp

@@ -21,33 +21,33 @@ DataBuffer::DataBuffer(const DataBuffer& other, Data::difference_type offset) :
 	std::copy(other.m_Buffer.begin() + offset, other.m_Buffer.end(), std::back_inserter(m_Buffer));
 }
 
-DataBuffer& DataBuffer::operator<<(const std::string& str) {
+DataBuffer& operator<<(DataBuffer& a_Buffer, const std::string& str) {
 	std::size_t strlen = str.length() + 1;	// including null character
-	Resize(GetSize() + strlen);
-	std::memcpy(m_Buffer.data() + GetSize() - strlen, str.data(), strlen);
-	return *this;
+	a_Buffer.Resize(a_Buffer.GetSize() + strlen);
+	std::memcpy(a_Buffer.data() + a_Buffer.GetSize() - strlen, str.data(), strlen);
+	return a_Buffer;
 }
 
-DataBuffer& DataBuffer::operator<<(const DataBuffer& data) {
-	m_Buffer.insert(m_Buffer.end(), data.begin(), data.end());
-	return *this;
+DataBuffer& operator<<(DataBuffer& a_Buffer, const DataBuffer& data) {
+	a_Buffer.insert(a_Buffer.end(), data.begin(), data.end());
+	return a_Buffer;
 }
 
-DataBuffer& DataBuffer::operator>>(std::string& str) {
-	std::size_t stringSize = strlen(reinterpret_cast<const char*>(m_Buffer.data()) + m_ReadOffset) + 1;	 // including null character
+DataBuffer& operator>>(DataBuffer& a_Buffer, std::string& str) {
+	std::size_t stringSize = strlen(reinterpret_cast<const char*>(a_Buffer.data()) + a_Buffer.GetReadOffset()) + 1;	 // including null character
 	str.resize(stringSize);
-	std::copy(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset),
-		m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset + stringSize), str.begin());
-	m_ReadOffset += stringSize;
+	std::copy(a_Buffer.begin() + static_cast<DataBuffer::difference_type>(a_Buffer.GetReadOffset()),
+		a_Buffer.begin() + static_cast<DataBuffer::difference_type>(a_Buffer.GetReadOffset() + stringSize), str.begin());
+	a_Buffer.SetReadOffset(a_Buffer.GetReadOffset() + stringSize);
 	str.resize(stringSize - 1);
-	return *this;
+	return a_Buffer;
 }
 
-DataBuffer& DataBuffer::operator>>(DataBuffer& data) {
-	data.Resize(GetSize() - m_ReadOffset);
-	std::copy(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset), m_Buffer.end(), data.begin());
-	m_ReadOffset = m_Buffer.size();
-	return *this;
+DataBuffer& operator>>(DataBuffer& a_Buffer, DataBuffer& data) {
+	data.Resize(a_Buffer.GetSize() - a_Buffer.GetReadOffset());
+	std::copy(a_Buffer.begin() + static_cast<DataBuffer::difference_type>(a_Buffer.GetReadOffset()), a_Buffer.end(), data.begin());
+	a_Buffer.SetReadOffset(a_Buffer.GetSize());
+	return a_Buffer;
 }
 
 void DataBuffer::WriteSome(const char* buffer, std::size_t amount) {
@@ -147,4 +147,8 @@ void DataBuffer::WriteFile(const std::string& fileName) const {
 	file.flush();
 }
 
+void DataBuffer::insert(iterator a_DestBegin, const_iterator a_SrcBegin, const_iterator a_SrcEnd) {
+	m_Buffer.insert(a_DestBegin, a_SrcBegin, a_SrcEnd);
+}
+
 }  // namespace sp

src/sp/common/VarInt.cpp

@@ -1,6 +1,7 @@
 #include <sp/common/VarInt.h>
 
 #include <sp/common/DataBuffer.h>
+#include <sp/common/DataBufferOperators.h>
 #include <stdexcept>
 
 namespace sp {

test/test_message.cpp

@@ -24,11 +24,13 @@ using Message = sp::ConcreteMessage<TData, PacketBase, ID>;
 struct KeepAlivePacket {
 	sp::BitField<std::uint16_t, 12> one;
 	sp::BitField<std::uint16_t, 4> two;
+	std::shared_ptr<std::string> test;
 };
 
 struct MDCPacket {
 	sp::BitField<std::uint16_t, 12> one;
 	sp::BitField<PacketID, 4> two;
+	std::unique_ptr<std::string> test;
 };
 
 using KeepAliveMessage = Message<KeepAlivePacket, PacketID::KeepAlive>;
@@ -41,10 +43,10 @@ class PacketHandler : public sp::GenericHandler<AllMessages> {};
 class MyHandler : public PacketHandler {
   public:
 	virtual void Handle(const KeepAliveMessage& msg) override {
-		std::cout << "I recieved a keep alive : " << *msg->one << " : " << *msg->two << "\n";
+		std::cout << "I recieved a keep alive : " << *msg->one << " : " << *msg->two << " : " << (msg->test ? *msg->test : "nullptr") << "\n";
 	}
 	virtual void Handle(const MDCMessage& msg) override {
-		std::cout << "I recieved a mdc : " << *msg->one << " : " << static_cast<unsigned>(*msg->two) << "\n";
+		std::cout << "I recieved a mdc : " << *msg->one << " : " << static_cast<unsigned>(*msg->two) << " : " << *msg->test << "\n";
 	}
 };
 
@@ -55,7 +57,7 @@ using PacketFactory = sp::MessageFactory<PacketBase, AllMessages>;
 using PacketStream = sp::MessageStream<PacketFactory>;
 
 int main() {
-	KeepAliveMessage m{69, 5};
+	KeepAliveMessage m{69, 5, std::make_shared<std::string>("I'm a keepalive")};
 
 	// dispatch tests
 
@@ -69,7 +71,6 @@ int main() {
 	d.Dispatch(*message);
 
 
-
 	// write tests
 
 	auto compress = std::make_shared<sp::ZlibCompress>();
@@ -79,7 +80,7 @@ int main() {
 	PacketStream p(std::make_shared<sp::StdOuput>(file));
 
 	p.WriteMessage(m);
-	p.WriteMessage(MDCMessage{42, PacketID::MDC});
+	p.WriteMessage(MDCMessage{42, PacketID::MDC, std::make_unique<std::string>("Coucou")});
 
 	file.flush();