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https://issues.apache.org/jira/browse/NETBEANS-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16783515#comment-16783515
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Bertrand Delacretaz commented on NETBEANS-2204:
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Got more information from the proxy administrator in the meantime:
{quote}all requests came from one user. Apparently the computer or the
application had a problem. The update-checker ran a loop
{quote}
So maybe there's a bug in the updates checker that can cause a loop....or maybe
someone was hacking at NetBeans and made a mistake ;)
> Too many requests to /dyn/closer.lua from NetBeans users behind an HTTP proxy
> -----------------------------------------------------------------------------
>
> Key: NETBEANS-2204
> URL: https://issues.apache.org/jira/browse/NETBEANS-2204
> Project: NetBeans
> Issue Type: Bug
> Components: updatecenters - Pluginportal
> Reporter: Bertrand Delacretaz
> Priority: Major
>
> A large organization with lots of users behind an HTTP proxy was recently
> banned from accessing *.apache.org servers due to too many requests to the
> following URL:
> http://apache.org/dyn/closer.lua?action=download&filename=incubator/netbeans/incubating-netbeans/incubating-10.0/nbms/updates.xml.gz
> Their proxy initiated more than 10'000 connections in 24 hours to that URL,
> causing an automatic ban by our infra defenses.
> [~wave] rightly notes that this might be due to the NetBeans updates checker,
> if that's correct it would be good for someone from the NetBeans team to look
> at it in more detail to avoid such problems in the future.
> I suppose what needs to be done is to modify that {{closer.lua}} script (or
> use it differently if there's such an option already) so that its result is
> cacheable by an HTTP proxy.
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