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https://issues.apache.org/jira/browse/LOG4J2-181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ralph Goers closed LOG4J2-181.
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> SocketAppender reconnection doesn't work
> ----------------------------------------
>
> Key: LOG4J2-181
> URL: https://issues.apache.org/jira/browse/LOG4J2-181
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-beta4
> Reporter: Ralph Goers
> Assignee: Ralph Goers
> Fix For: 2.0-beta5
>
>
> This issue was actually reported by Werner Goeschl on the developers mailing
> list.
> We configured a SocketAppender with a reconnectionDelay and defaultLayout
> (SerializedLayout) in a XML-Config File.
> After starting the application, the SocketAppender tries to open the socket
> periodical.
> As the next step, we start the application with the SocketServer, and so the
> Appender connects to it.
> But after we get the following Exception, when we will open the
> ObjectInputStream (final ObjectInputStream ois = new
> ObjectInputStream(socket.getInputStream());
>
> Exception in thread "Thread-2" java.lang.RuntimeException:
> java.io.StreamCorruptedException: invalid stream header: 7372003E
> at test.logger.LoggerTest_1$TCPSocketServer.run(LoggerTest_1.java:83)
> Caused by: java.io.StreamCorruptedException: invalid stream header: 7372003E
> at java.io.ObjectInputStream.readStreamHeader(Unknown Source)
> at java.io.ObjectInputStream.<init>(Unknown Source)
> at test.logger.LoggerTest_1$TCPSocketServer.run(LoggerTest_1.java:72)
>
> The reason is:
> At the Startup is no socket server available, therefore a dummy
> ByteArrayOutputStream is created.
> See TCPSocketManager:230
> After that, the Header of the layout (Object stream header) is written to the
> Dummy ByteArrayOutputStream.
> See AbstractOutputStreamAppender:62
>
> If the Reconnector-Thread succeeds, the Dummy ByteArrayOutputStream is
> changed to the OutputStream from the socket.
> See TCPSocketManager:175
> But after this action the object stream header is not written again!
>
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