New Proejct: Basic Network Library

Add PacketQeue for fluent packet stacking

@@ -8,6 +8,16 @@
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+/Basic Network Library/[Bb]uilds/
+/Basic Network Library/Assets/AssetStoreTools*
+
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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices; // https://msdn.microsoft.com/ko-kr/library/system.runtime.interopservices(v=vs.110).aspx
+
+// 이 타입의 목적: 물흐르듯이 패킷을 쌓고 꺼내올수 있는 큐
+public class PacketQueue
+{
+	// 대응되는 패킷이 정확히 스트림에서 어디 인덱스에 존재하는지 지정
+	struct PacketInfo
+	{
+		public int offset; // 이 데이터가 기록되기 시작한 지점
+		public int size; // 이 데이터의 사이즈
+	}
+
+	// MemoryStream 은 데이터를 연속적으로 쌓고 빼낼수 있는 스트림 버퍼
+	// MemoryStream 은 디스크나 네트워크 연결이 아니라 메모리 상에 데이터를 저장하는 스트림 버퍼
+	// 데이터의 끊김이 없으므로 패킷으로는 다룰수 없다
+	private MemoryStream m_streamBuffer;
+
+
+	private List<PacketInfo> m_waitingPackets; // 아직 디큐하지 못하고 쌓인 패킷들
+
+	private int m_cursor = 0; // 버퍼가 채워져 커서가 밀려난 지점, 데이터를 채울때 여기서 부터 채우면 됨
+
+	private Object lockObj = new Object(); // 데드락 방지용 단순 참고자
+
+	// 초기화
+	public PacketQueue()
+	{
+		m_streamBuffer = new MemoryStream();
+		m_waitingPackets = new List<PacketInfo>();
+	}
+
+	// 큐에 바이트 데이터 추가
+	public int Enqueue(byte[] data, int size)
+	{
+		PacketInfo info = new PacketInfo();
+
+		info.offset = m_cursor; // 스트림내에서 이 데이터를 찾으려면 어디서 부터 읽으면 되는지 기록
+		info.size = size;
+
+		lock(lockObj) // 데드락 방지
+		{
+			// 패킷 저장 정보를 보존
+			m_waitingPackets.Add(info);
+
+			// 패킷 데이터를 추가
+
+			m_streamBuffer.Position = m_cursor; // 스트림의 위치를 마지막으로 갱신한 커서 위치로.
+			m_streamBuffer.Write(data,0,size); // 현재 위치에서 사이즈만큼 버퍼를 쌓기
+			m_streamBuffer.Flush(); // 적용
+
+			m_cursor += size; // 커서를 방금 추가한 패킷 만큼 오른쪽으로 이동
+		}
+
+		return size; // 추가된 데이터의 사이즈를 리턴
+	}
+
+	// 버퍼를 맡기면 채워서 넘겨줌
+	public int Dequeue(ref byte[] buffer, int size)
+	{
+		// 패킷 리스트에 남아있는게 없다면 종료
+		if(m_waitingPackets.Count <= 0)
+		{
+			return -1;
+		}
+
+		int recvSize = 0;
+
+		// 데드락 방지
+		lock(lockObj) {
+			// 가장 마지막에 추가된 패킷부터 가져온다
+			PacketInfo info = m_waitingPackets[0];
+
+			// 저장된 패킷 이상의 사이즈를 긁어올순 없음
+			int dataSize = Math.Min(size, info.size);
+
+			// 읽기 시작할 위치
+			m_streamBuffer.Position = info.offset;
+			// 현재 커서 위치에서 dataSize 만큼 오른쪽만큼 이동한 지점까지를 영역으로
+			// 데이터를 긁어와 입력으로 들어온 buffer 를 채움
+			recvSize = m_streamBuffer.Read(buffer, 0, dataSize);
+
+			// 패킷을 꺼냈으므로 꺼낸 패킷에 대한 패킷 기록을 리스트에서 삭제
+			if(recvSize > 0)
+			{
+				m_waitingPackets.RemoveAt(0);
+			}
+
+			// 모든 큐 데이터를 꺼냈을때는 스트림을 다시 제로포인트로 클리어해서 메모리를 절약
+			if(m_waitingPackets.Count == 0)
+			{
+				Clear();
+				m_cursor = 0;
+			}
+
+		}
+		return recvSize;
+
+	}
+
+	// 스트림버퍼의 커서를 초기화. 큐와 메모리 클리어
+	public void Clear()
+	{
+		// 스트림 버퍼의 남은 데이터를 긁어서
+		byte[] buffer = m_streamBuffer.GetBuffer();
+		// 해당 데이터를 정렬함
+		Array.Clear(buffer,0,buffer.Length);
+
+		// 스트림 버퍼의 커서와 길이를 제로로 되돌리기
+		m_streamBuffer.Position = 0;
+		m_streamBuffer.SetLength(0);
+	}
+
+}
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+using UnityEngine;
+using System.Collections;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading;
+
+
+public class TransportTCP : MonoBehaviour {
+
+	// 소켓 액세스
+
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+
+	
+
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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using System.Net;
+using System.Net.Sockets;
+
+public class TransportUDP : MonoBehaviour {
+
+	// 소켓 액세스 포인트들
+
+	// 클라이언트의 접속을 받을 소켓
+	private Socket m_socket = null;
+}

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