/// <summary>
/// 数据缓冲区
/// </summary>
/// <param name="bufferCount">数据缓冲区计数</param>
/// <param name="index">起始位置</param>
/// <param name="count">字节数量</param>
internal Buffer(BufferCount bufferCount, int index, int count)
{
this.bufferCount = bufferCount;
array.Set(bufferCount.Buffer.Buffer, index, count);
++bufferCount.Count;
}
/// <summary>
/// 继续接收数据
/// </summary>
/// <returns>是否接收成功</returns>
private unsafe bool receive()
{
#if DOTNET2
if (buffer == null)
{
buffer = new BufferCount();
bufferIndex = buffer.Buffer.StartIndex;
bufferEndIndex = bufferIndex + BufferPool.Size;
}
socket.BeginReceive(buffer.Buffer.Buffer, bufferIndex, bufferEndIndex - bufferIndex, SocketFlags.None, out socketError, onReceiveAsyncCallback, socket);
return(socketError == SocketError.Success);
#else
START:
if (buffer == null)
{
buffer = new BufferCount();
bufferIndex = buffer.Buffer.StartIndex;
bufferEndIndex = bufferIndex + BufferPool.Size;
#if !DotNetStandard
while (Interlocked.CompareExchange(ref receiveAsyncLock, 1, 0) != 0)
{
Thread.Sleep(0);
}
#endif
async.SetBuffer(buffer.Buffer.Buffer, bufferIndex, BufferPool.Size);
if (socket.ReceiveAsync(async))
{
#if !DotNetStandard
Interlocked.Exchange(ref receiveAsyncLock, 0);
#endif
return(true);
}
}
else
{
#if !DotNetStandard
while (Interlocked.CompareExchange(ref receiveAsyncLock, 1, 0) != 0)
{
Thread.Sleep(0);
}
#endif
async.SetBuffer(bufferIndex, bufferEndIndex - bufferIndex);
if (socket.ReceiveAsync(async))
{
#if !DotNetStandard
Interlocked.Exchange(ref receiveAsyncLock, 0);
#endif
return(true);
}
}
#if !DotNetStandard
Interlocked.Exchange(ref receiveAsyncLock, 0);
#endif
if (async.SocketError == SocketError.Success)
{
onReceive(async.BytesTransferred);
goto START;
}
return(false);
#endif
}