/// <summary>
/// 将接收到的字节转成数据包
/// </summary>
/// <param name="packs">数据包列表</param>
/// <param name="e">接收数据</param>
/// <param name="littleEndian">小端</param>
/// <param name="maxPackageSize">最大包大小</param>
/// <returns>数据包数 -1为非法数据包</returns>
public IList <INetPackage> Parse(AsyncSocketTokenEventArgs e, bool littleEndian = true, int maxPackageSize = 10240)
{
//lock (((ICollection)lockers).SyncRoot) {}
if (!lockers.ContainsKey(e.ConnectionID))
{
lockers[e.ConnectionID] = new object();
}
lock (lockers[e.ConnectionID]) {
if (cache.ContainsKey(e.ConnectionID))
{
cache[e.ConnectionID] = EndianHelper.UnionBytes(cache[e.ConnectionID], e.ReceivedBytes);
}
else
{
cache[e.ConnectionID] = EndianHelper.UnionBytes(null, e.ReceivedBytes);
}
byte[] data = cache[e.ConnectionID];
int count = data.Length;
if (count <= 4)
{
return(new List <INetPackage>());
}
if (count > maxPackageSize)
{
return(null);
}
IList <INetPackage> packs = new List <INetPackage>();
while (count > 4)
{
byte[] lenBytes = new byte[4];
Buffer.BlockCopy(data, 0, lenBytes, 0, 4);
StructPackageLength lenPack = EndianHelper.BytesToStruct <StructPackageLength>(lenBytes);
int length = lenPack.Size;
if (length > 0 && count >= length + 14)
{
byte[] bytes = new byte[10240 + 10 + 4];
Buffer.BlockCopy(data, 0, bytes, 0, length + 14);
StructPackageData packData = EndianHelper.BytesToStruct <StructPackageData>(bytes);
byte[] resultBytes = new byte[packData.Size];
Buffer.BlockCopy(packData.Bytes, 0, resultBytes, 0, packData.Size);
System.IO.MemoryStream resultStream = new System.IO.MemoryStream(resultBytes);
StructPackage pack = new StructPackage();
pack.Command = packData.Command;
pack.Stream = new StreamReader(resultStream, littleEndian);
packs.Add(pack);
byte[] data2 = new byte[count - length - 14];
Buffer.BlockCopy(data, length + 14, data2, 0, count - length - 14);
count = count - length - 14;
data = data2;
cache[e.ConnectionID] = data;
}
else
{
if (length < 0)
{
cache[e.ConnectionID] = null;
}
return(packs);
}
}
return(packs);
}
}
/// <summary>
/// Reads different information from the header.
/// </summary>
protected override void ReadHeaderInfo()
{
Headers.Add(FILEHEADERNAME, EndianHelper.BytesToStruct <FileHeader>(RawData.SubArray(0, 14)));
}
/// <summary>
/// 返回数据包里的消息
/// </summary>
/// <typeparam name="T">结构体</typeparam>
/// <returns></returns>
public T NetMessage <T>() where T : INetMessage, new()
{
return(EndianHelper.BytesToStruct <T>(Stream.ReadBytes((int)Stream.Length)));
}
