42 lines
1.4 KiB
C#
42 lines
1.4 KiB
C#
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using FlyingWormConsole3.LiteNetLib.Utils;
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using System;
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using System.Net;
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namespace FlyingWormConsole3.LiteNetLib.Layers
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{
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public sealed class Crc32cLayer : PacketLayerBase
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{
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public Crc32cLayer() : base(CRC32C.ChecksumSize)
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{
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}
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public override void ProcessInboundPacket(IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
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{
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if (length < NetConstants.HeaderSize + CRC32C.ChecksumSize)
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{
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NetDebug.WriteError("[NM] DataReceived size: bad!");
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//Set length to 0 to have netManager drop the packet.
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length = 0;
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return;
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}
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int checksumPoint = length - CRC32C.ChecksumSize;
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if (CRC32C.Compute(data, offset, checksumPoint) != BitConverter.ToUInt32(data, checksumPoint))
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{
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NetDebug.Write("[NM] DataReceived checksum: bad!");
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//Set length to 0 to have netManager drop the packet.
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length = 0;
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return;
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}
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length -= CRC32C.ChecksumSize;
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}
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public override void ProcessOutBoundPacket(IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
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{
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FastBitConverter.GetBytes(data, length, CRC32C.Compute(data, offset, length));
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length += CRC32C.ChecksumSize;
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}
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}
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}
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