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From ivmaykov <...@git.apache.org>
Subject [GitHub] zookeeper pull request #679: ZOOKEEPER-3172: Quorum TLS - fix port unificati...
Date Wed, 21 Nov 2018 18:23:08 GMT
GitHub user ivmaykov reopened a pull request:

    https://github.com/apache/zookeeper/pull/679

    ZOOKEEPER-3172: Quorum TLS - fix port unification to allow rolling upgrades

    Fix numerous problems with UnifiedServerSocket, such as hanging the accept() thread when
the client doesn't send any data or crashing if less than 5 bytes are read from the socket
in the initial read.
    
    Re-enable the "portUnification" config option.
    
    ## Fixed networking issues/bugs in UnifiedServerSocket
    
    - don't crash the `accept()` thread if the client closes the connection without sending
any data
    - don't corrupt the connection if the client sends fewer than 5 bytes for the initial
read
    - delay the detection of TLS vs. plaintext mode until a socket stream is read from or
written to. This prevents the `accept()` thread from getting blocked on a `read()` operation
from the newly connected socket.
    - prepending 5 bytes to `PrependableSocket` and then trying to read >5 bytes would
only return the first 5 bytes, even if more bytes were available. This is fixed.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/ivmaykov/zookeeper ZOOKEEPER-3172

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/zookeeper/pull/679.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #679
    
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