private void AsyncSendHandler(IAsyncResult ar)
{
if (ar.IsCompleted)
{
try
{
int len = _client.EndSend(ar);
LoggerFactory.Debug("send:{0} bytes", len);
}
catch (Exception e)
{
OnError(Errors.NetworkError, "发送包失败。", e);
}
SendState state = (SendState)ar.AsyncState;
if (state.LastPacket)
{
//最后一个包发完开始检测结果
UdpPacket packet = state.Packet;
if (packet.CheckSendResponse)
{
// 添加到正在发送包一览，随后启动定时器检测有无返回结果
LoggerFactory.Debug("add to check response:id={0}", packet.ID);
if (!_sendingPacketDic.TryAdd(packet.ID, packet))
{
//应该不会到这里来
OnError(Errors.Unknow, "未想定异常：AsyncSendHandler", null);
}
WaitTimer.Start(this.SendResponseCheckDelay, SendResultCheckHandler, packet);
}
else
{
//对于不需要确认的直接认为发送完毕
OnSendPackage(packet, true);
}
}
}
}