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https://issues.apache.org/jira/browse/LOG4J2-2829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17405256#comment-17405256
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Wojciech Zych commented on LOG4J2-2829:
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[~okanarbik] Did you find any workaround/fix for this problem?
> TcpSocketManager.write swallows IOException when retry = false or reconnector
> != null
> -------------------------------------------------------------------------------------
>
> Key: LOG4J2-2829
> URL: https://issues.apache.org/jira/browse/LOG4J2-2829
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.12.1
> Reporter: Mihail
> Priority: Major
>
> Hi, I see very stange behavior when using tcp SocketAppender. My
> configuration is:
> <Socket name="auditSocket" protocol="TCP" host="10.8.84.194" port="4587"
> connectTimeoutMillis="10000" reconnectionDelayMillis="10000"
> immediateFail="true" immediateFlush="true" ignoreExceptions="false"
> bufferedIO="false">
> After application starts and before writing any logs I simulate connection
> reset with:
> iptables -A OUTPUT -p tcp -d 10.8.84.194 --dport 4587 -j REJECT --reject-with
> tcp-reset
> Now the strange part:
> # First log is written to output stream successfully (but nothing actually
> gets sent)
> # Second log throws IOException on outputstream write, this gets handled
> with a reconnection attempt (which fails) and result is
> AppenderLoggingException - this is what I expect because I'm using a failover
> appender to route the log into file.
> # Third and subsequent log attempts also fail due to IOException on
> outputstream write BUT no AppenderLoggingException is raised - reconnector is
> not null at this point and IOException gets swallowed up.
>
> I'm using log4j2 2.12.1
>
>
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