public virtual void RecvAsync(AsyncUserToken iAsyncUserToken)
{
iAsyncUserToken.ActiveDateTime = DateTime.Now;
if (iAsyncUserToken.RecvEventArgs.BytesTransferred > 0 &&
iAsyncUserToken.RecvEventArgs.SocketError == SocketError.Success)
{
//如果处理数据返回失败，则断开连接
if (!iAsyncUserToken.RecvAsync())
{
CloseSocket(iAsyncUserToken);
}
else
{
//否则投递下次接收数据请求
// true I/O操作处于挂起状态(会引发SocketAsyncEventArgs.Completed 上的事件e),
// false I/O操作同步完成(不会引发会引发SocketAsyncEventArgs.Completed 上的事件e，可能是直接返回操作结果)
bool willRaiseEvent = iAsyncUserToken.Socket.ReceiveAsync(iAsyncUserToken.RecvEventArgs); //投递接收请求
if (!willRaiseEvent)
{
OnRecvAsync(iAsyncUserToken.RecvEventArgs);
}
}
}
else
{
CloseSocket(iAsyncUserToken);
}
}