[jira] [Commented] (MESOS-6104) Potential FD double close in libevent's implementation of `sendfile`.

["Joseph Wu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-6104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447609#comment-15447609 ] 

Joseph Wu commented on MESOS-6104:
----------------------------------

Added some fail-fast code here: https://reviews.apache.org/r/51511/

> Potential FD double close in libevent's implementation of `sendfile`.
> ---------------------------------------------------------------------
>
>                 Key: MESOS-6104
>                 URL: https://issues.apache.org/jira/browse/MESOS-6104
>             Project: Mesos
>          Issue Type: Bug
>          Components: webui
>    Affects Versions: 1.0.1
>            Reporter: Joseph Wu
>            Assignee: Joseph Wu
>            Priority: Critical
>              Labels: mesosphere, ssl
>
> Repro copied from: https://reviews.apache.org/r/51509/
> It is possible to make the master CHECK fail by repeatedly hitting the web UI and reloading the static assets:
> 1) Paste lots of text (16KB or more) of text into `src/webui/master/static/home.html`.  The more text, the more reliable the repro.
> 2) Start the master with SSL enabled:
> {code}
> LIBPROCESS_SSL_ENABLED=true LIBPROCESS_SSL_KEY_FILE=key.pem LIBPROCESS_SSL_CERT_FILE=cert.pem bin/mesos-master.sh --work_dir=/tmp/master
> {code}
> 3) Run two instances of this python script repeatedly:
> {code}
> import socket
> import ssl
> s = ssl.wrap_socket(socket.socket())
> s.connect(("localhost", 5050))
> s.sendall("""GET /static/home.html HTTP/1.1
> User-Agent: foobar
> Host: localhost:5050
> Accept: */*
> Connection: Keep-Alive
> """)
> # The HTTP part of the response
> print s.recv(1000)
> {code}
> i.e. 
> {code}
> while python test.py; do :; done & while python test.py; do :; done
> {code}



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