[GitHub] [dubbo-go] whitekeyboard edited a comment on issue #1100: provider频繁上下线时，consumer端会panic

[GitBox <gi...@apache.org>]

whitekeyboard edited a comment on issue #1100:
URL: https://github.com/apache/dubbo-go/issues/1100#issuecomment-806302521


   补充一下：
   日志中有“can't dial the server”的日志，dubbo协议的Refer函数会返回nil，导致上述的panic
   ```
   // Refer create dubbo service reference.
   func (dp *DubboProtocol) Refer(url *common.URL) protocol.Invoker {
   	exchangeClient := getExchangeClient(url)
   	if exchangeClient == nil {
   		logger.Warnf("can't dial the server: %+v", url.Location)
   		return nil
   	}
   	invoker := NewDubboInvoker(url, exchangeClient)
   	dp.SetInvokers(invoker)
   	logger.Infof("Refer service: %s", url.String())
   	return invoker
   }
   ```


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