Red Hat Bugzilla – Bug 202956
wget fails to retry DNS resolution when temporary link failure
Last modified: 2009-03-26 09:20:53 EDT
Description of problem:
wget fails with "Resolving xxx... failed: Temporary failure in name resolution"
but although it is well described as being temporary (because it is) wget fails
to retry the name resolution.
Version-Release number of selected component (if applicable):
wget-1.10.2-0.fc4 but probably others too.
Steps to Reproduce:
1. Start wget on a large file
2. Take down ethernet link then bring it back up
wget often fails with above message
wget should retry.
When a link goes down then often DNS resolution will also go down temporarily.
If wget is to attempt to do reliable fetches then it should allow for temporary
DNS failure and try again after a suitable pause.
Unfortunately wget doesn't try hard enough.
This report targets the FC3 or FC4 products, which have now been EOL'd.
Could you please check that it still applies to a current Fedora release, and
either update the target product or close it ?
Fedora Core 4 is now completely unmaintained. These bugs can't be fixed in that
version. If the issue still persists in current Fedora Core, please reopen.
Thank you, and sorry about this.
Applicable to Fedora Core 6. Sorry about this.
And I have already said this in comment #2 about!
You aren't reading anything are you Matt!
Fedora apologizes that these issues have not been resolved yet. We're
sorry it's taken so long for your bug to be properly triaged and acted
on. We appreciate the time you took to report this issue and want to
make sure no important bugs slip through the cracks.
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The process we are following is outlined here:
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It's not at all clear to me what Wget "should" do in response to this situation.
How long should it wait? If the DNS or link is down, how long might it be down?
And, should Wget hold up downloads of other fetches in a recursive session?
"Reliable fetches" with Wget, to me means that it can attempt to finish off a
file when there is a sudden loss of connection, and that Wget can be used to
continue an unfinished file from previous sessions. I don't believe it's Wget's
responsibility to sit around and wait for temporary network failures to resolve
themselves. That's what "wget -c" is for.
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The process we are following is described here:
(In reply to comment #6)
> How long should it wait?
As long the user wants, of course.
I'll close this as the upstream maintainer already expressed his opinion in comment #6 that a retry isn't wget's responsibility.