add base io interface

include/sp/protocol/MessageDispatcher.h

@@ -6,6 +6,7 @@
  */
 
 #include <map>
+#include <memory>
 
 namespace sp {
 
@@ -19,6 +20,8 @@ class MessageDispatcher {
 	std::map<MessageIdType, std::vector<std::shared_ptr<MessageHandler>>> m_Handlers;
 
   public:
+	using MessageBaseType = MessageBase;
+
 	/**
 	 * \brief Constructor
 	 */
@@ -51,4 +54,4 @@ class MessageDispatcher {
 
 #include <sp/protocol/message/MessageDispatcherImpl.inl>
 
-}  // namespace blitz
+}  // namespace sp

include/sp/protocol/MessageFactory.h

@@ -16,7 +16,7 @@ class MessageFactory {
 
 	MessageFactory() : m_Factory(details::ArrayFiller<TBase, TTMessages>::ArrayCreate()) {}
 
-	std::unique_ptr<TBase> CreateMessage(IdType id) {
+	std::unique_ptr<TBase> CreateMessage(IdType id) const {
 		if (id >= m_Factory.size())
 			return nullptr;
 		return m_Factory.at(id)();

include/sp/protocol/message/MessageInterfacesImpl.h

@@ -75,6 +75,13 @@ class MessageInterfaceWriteBase : public TBase {
 		WriteImpl(buffer);
 	}
 
+	// helper
+	DataBuffer Write() const {
+		DataBuffer buffer;
+		this->Write(buffer);
+		return buffer;
+	}
+
   protected:
 	virtual void WriteImpl(DataBuffer& buffer) const = 0;
 };
@@ -113,6 +120,13 @@ class MessageInterfaceWriteIdBase : public TBase {
 		this->WriteData(this->GetId(), buffer);
 		this->WriteImpl(buffer);
 	}
+
+	// helper
+	DataBuffer Write() const {
+		DataBuffer buffer;
+		this->Write(buffer);
+		return buffer;
+	}
 };
 
 }  // namespace details