107 lines
2.6 KiB
C#
107 lines
2.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net.Sockets;
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namespace OpenRA.Server
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{
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class Connection
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{
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public Socket socket;
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public List<byte> data = new List<byte>();
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public ReceiveState State = ReceiveState.Header;
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public int ExpectLength = 8;
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public int Frame = 0;
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/* client data */
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public int PlayerIndex;
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/* file server state */
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public int NextChunk = 0;
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public int NumChunks = 0;
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public int RemainingBytes = 0;
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public Stream Stream = null;
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public byte[] PopBytes(int n)
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{
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var result = data.GetRange(0, n);
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data.RemoveRange(0, n);
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return result.ToArray();
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}
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bool ReadDataInner()
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{
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var rx = new byte[1024];
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var len = 0;
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for (; ; )
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{
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try
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{
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if (0 < (len = socket.Receive(rx)))
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data.AddRange(rx.Take(len));
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else
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break;
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}
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catch (SocketException e)
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{
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if (e.SocketErrorCode == SocketError.WouldBlock) break;
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Server.DropClient(this, e);
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return false;
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}
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}
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return true;
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}
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public void ReadData()
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{
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if (ReadDataInner())
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while (data.Count >= ExpectLength)
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{
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var bytes = PopBytes(ExpectLength);
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switch (State)
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{
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case ReceiveState.Header:
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{
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ExpectLength = BitConverter.ToInt32(bytes, 0) - 4;
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Frame = BitConverter.ToInt32(bytes, 4);
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State = ReceiveState.Data;
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} break;
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case ReceiveState.Data:
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{
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Server.DispatchOrders(this, Frame, bytes);
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ExpectLength = 8;
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State = ReceiveState.Header;
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Server.UpdateInFlightFrames(this);
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} break;
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}
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}
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}}
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enum ReceiveState { Header, Data };
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}
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