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https://issues.apache.org/jira/browse/HADOOP-7729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824337#comment-16824337
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Steve Loughran commented on HADOOP-7729:
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if these are your IPC ports, then they are false alarms. All the IPC ports do
is recognise when a GET request has come in, and tell the user to go away.
These are not Web servers of any kind.
That said, do see if you can try any overflow attacks to see if a GET with a
very large amount of path breaks; I'm now curious about that
> Send back valid HTTP response if user hits IPC port with HTTP GET
> -----------------------------------------------------------------
>
> Key: HADOOP-7729
> URL: https://issues.apache.org/jira/browse/HADOOP-7729
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Major
> Fix For: 2.0.0-alpha
>
> Attachments: hadoop-7729.txt
>
>
> Often, I've seen users get confused between the IPC ports and HTTP ports for
> a daemon. It would be easy for us to detect when an HTTP GET request hits an
> IPC port, and instead of sending back garbage, we can send back a valid HTTP
> response explaining their mistake.
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