[LOG4J2-1968] GelfLayout/SocketAppender does document "includeNullDelimiter" to append the frame delimiter null byte when using TCP

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8, 2.8.2
• Fix Version/s: 2.9.0
• Component/s: Appenders, Layouts
• Assignee: Unassigned
• Reporter: Peter Lauko
• Created: 05/Jul/17 11:57
• Updated: 05/Jul/17 17:05
• Resolved: 05/Jul/17 17:05

Description

Hi,

According to GELF specification, when using TCP protocol a '\0' null byte must be appended at the end of message as frame delimiter.
http://docs.graylog.org/en/latest/pages/gelf.html#gelf

Using below config messages do not appear in Graylog.
Everything is fine when using UDP, or when using GELF appender (https://github.com/graylog-labs/log4j2-gelf), so logging config itself is ok.
I can see the packets in Wireshark, only Graylog ignores them.

        <Socket name="SocketTcp" protocol="TCP" host="dit17mpc029.dorsum.intra" port="12201" ignoreExceptions="false">
            <GelfLayout host="jenkins-sock-tcp" compressionType="OFF"/>
        </Socket>