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How to let net.LookupMX timeout?
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Googol Lee  
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 More options Nov 15 2012, 1:12 am
From: Googol Lee <googol...@gmail.com>
Date: Wed, 14 Nov 2012 22:12:07 -0800 (PST)
Local: Thurs, Nov 15 2012 1:12 am
Subject: How to let net.LookupMX timeout?
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Recently Great Firewall in China is more powerful and pollute Google
Domain. When try to net.LookupMX("gmail.com"), it may halt a long time and
no return.

Is there a way to let net.LookupMX timeout? Although it won't block the
other request, I hope it can release after a while and receive a timeout
error.

And, net.smtp doesn't have timeout.


 
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Kamil Kisiel  
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 More options Nov 15 2012, 2:04 am
From: Kamil Kisiel <kamil.kis...@gmail.com>
Date: Wed, 14 Nov 2012 23:04:44 -0800 (PST)
Local: Thurs, Nov 15 2012 2:04 am
Subject: Re: How to let net.LookupMX timeout?
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It seems the Lookup functions all get their options from /etc/resolv.conf
(at least on unix, I'm not familiar with how this stuff works on Windows).

You should be able to add a line that says

options timeout:n

to /etc/resolv.conf to change the timeout. There's also numerous other
options which may be useful in speeding up your DNS resolution, check man 5
resolver or man 5 resolv.conf.


 
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Googol Lee  
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 More options Nov 15 2012, 2:19 am
From: Googol Lee <googol...@gmail.com>
Date: Wed, 14 Nov 2012 23:19:12 -0800 (PST)
Local: Thurs, Nov 15 2012 2:19 am
Subject: Re: How to let net.LookupMX timeout?
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Thanks for rapid reply. It's helpful.


 
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Martin Kühl  
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 More options Nov 15 2012, 2:09 am
From: Martin Kühl <martin.ku...@gmail.com>
Date: Thu, 15 Nov 2012 08:09:28 +0100
Local: Thurs, Nov 15 2012 2:09 am
Subject: Re: [go-nuts] How to let net.LookupMX timeout?
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There is a very nice example and description of adding timeouts here:
https://gobyexample.com/timeouts


 
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