Full Distribution

src/outputmessage.h

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+/**
+ * Tibia GIMUD Server - a free and open-source MMORPG server emulator
+ * Copyright (C) 2017  Alejandro Mujica <alejandrodemujica@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef FS_OUTPUTMESSAGE_H_C06AAED85C7A43939F22D229297C0CC1
+#define FS_OUTPUTMESSAGE_H_C06AAED85C7A43939F22D229297C0CC1
+
+#include "networkmessage.h"
+#include "connection.h"
+#include "tools.h"
+
+class Protocol;
+
+class OutputMessage : public NetworkMessage
+{
+	public:
+		OutputMessage() = default;
+
+		// non-copyable
+		OutputMessage(const OutputMessage&) = delete;
+		OutputMessage& operator=(const OutputMessage&) = delete;
+
+		uint8_t* getOutputBuffer() {
+			return buffer + outputBufferStart;
+		}
+
+		void writeMessageLength() {
+			add_header(info.length);
+		}
+
+		void addCryptoHeader() {
+			writeMessageLength();
+		}
+
+		inline void append(const NetworkMessage& msg) {
+			auto msgLen = msg.getLength();
+			memcpy(buffer + info.position, msg.getBuffer() + 4, msgLen);
+			info.length += msgLen;
+			info.position += msgLen;
+		}
+
+		inline void append(const OutputMessage_ptr& msg) {
+			auto msgLen = msg->getLength();
+			memcpy(buffer + info.position, msg->getBuffer() + 4, msgLen);
+			info.length += msgLen;
+			info.position += msgLen;
+		}
+
+	protected:
+		template <typename T>
+		inline void add_header(T add) {
+			assert(outputBufferStart >= sizeof(T));
+			outputBufferStart -= sizeof(T);
+			memcpy(buffer + outputBufferStart, &add, sizeof(T));
+			//added header size to the message size
+			info.length += sizeof(T);
+		}
+
+		MsgSize_t outputBufferStart = INITIAL_BUFFER_POSITION;
+};
+
+class OutputMessagePool
+{
+	public:
+		// non-copyable
+		OutputMessagePool(const OutputMessagePool&) = delete;
+		OutputMessagePool& operator=(const OutputMessagePool&) = delete;
+
+		static OutputMessagePool& getInstance() {
+			static OutputMessagePool instance;
+			return instance;
+		}
+
+		void sendAll();
+		void scheduleSendAll();
+
+		static OutputMessage_ptr getOutputMessage();
+
+		void addProtocolToAutosend(Protocol_ptr protocol);
+		void removeProtocolFromAutosend(const Protocol_ptr& protocol);
+	private:
+		OutputMessagePool() = default;
+		//NOTE: A vector is used here because this container is mostly read
+		//and relatively rarely modified (only when a client connects/disconnects)
+		std::vector<Protocol_ptr> bufferedProtocols;
+};
+
+
+#endif