/// <summary>
/// libuv读取成功后回调函数
/// </summary>
/// <param name="handle">clientHandle</param>
/// <param name="nread">读取的长度</param>
/// <param name="error">Exception</param>
/// <param name="state">回调参数</param>
private void ReadCallback(UvStreamHandle handle, int nread, Exception error, object state)
{
if (_actionIndex > 0)
{
ActionStoreManage.Remove(_actionIndex, new Action(ReadStop));
_actionIndex = 0;
}
bool flag = error == null && nread > 0;
//bool flag2 = nread == 0 || nread == -4077 || nread == -4095;
ReadState readState = (ReadState)state;
try
{
if (flag)
{
readState.Callback(this, _memoryInfo.Buffer, nread, null, readState.OtheState);
}
else
{
readState.Callback(this, null, -1, error, readState.OtheState);
}
}
finally
{
handle.Stop();
//AllocCallback 开辟的内存空间回收
RecoverMemoryInfo();
}
}
private void ReadForPost(object state)
{
ReadState readState = (ReadState)state;
try
{
_actionIndex = ActionStoreManage.Add(new Action(ReadStop));
_clientHandle.Read(new Func <UvStreamHandle, int, object, LibUv.BufferStruct>(AllocCallback),
new Action <UvStreamHandle, int, Exception, object>(ReadCallback), readState);
}
catch (Exception error)
{
ActionStoreManage.Remove(_actionIndex, new Action(ReadStop));
_actionIndex = 0;
readState.Callback(this, null, -1, error, readState.OtheState);
}
}
private static void ReadMore(ReadState state)
{
var buffer = new byte[BufferSize];
state.Socket.AsyncReceive(buffer, (len) =>
{
DataFragment fragment = null;
if (!state.Buffers.Any())
{
fragment = new DataFragment(buffer);
state.ExpectedLength = fragment.Length;
}
state.Buffers.Add(buffer.Take(len).ToArray());
state.CurrentLength += len;
if (state.CurrentLength < state.ExpectedLength)
{
ReadMore(state);
}
else
{
if (fragment == null)
{
var ba = state.Buffers.SelectMany(b => b).ToArray();
fragment = new DataFragment(ba);
}
state.Fragments.Add(fragment);
if (!fragment.Fin)
{
ReadMore(new ReadState(state.Socket, state.Callback, state.Fragments));
}
else
{
state.Callback(state.Fragments);
}
}
});
}