Steps 4 and 5 should be interchanged I think.

What does host foo.example.com results in, on your computer?

Are you running your code on a Linux box or some other environment?

Thanks,

On Wednesday, 17 August 2016 13:49:21 UTC-7, Yaz Saito wrote:
>
> Assume we have foo.example.com, whose value changes unpredictably.
>
> 1. Initially, the A record of foo.example.com points to, say 1.2.3.4.
> 2. Start a grpc client, with the server pointed at foo.example.com:10000. 
> The client fails to
>   connect since there's nothing running at 1.2.3.4:10000.
> 3. Start a grpc server at an IP address 1.2.3.5:10000. 
> 4. Update the DNS server so that foo.example.com points to 1.2.3.5.
>
> In this situation, the grpc client never seems to discover the server at 
> 1.2.3.5, even when I set the DNS TTL very short.
>
> Am I diagnosing the problem correct? And if so, is there a way to work 
> around?
>
> -- 
> yaz
>

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