[jira] [Created] (LOG4J2-2006) LOG4j2 Syslog appender UDP message excceds limit error when over 65446 bytes

["vikrant vij (JIRA)" <ji...@apache.org>]

vikrant vij created LOG4J2-2006:
-----------------------------------

             Summary: LOG4j2 Syslog appender UDP message excceds limit error when  over 65446 bytes
                 Key: LOG4J2-2006
                 URL: https://issues.apache.org/jira/browse/LOG4J2-2006
             Project: Log4j 2
          Issue Type: Question
          Components: Appenders
    Affects Versions: 2.8.2
            Reporter: vikrant vij


I am using UDP in log4j2 Syslog appender, I have configured the appender progrmmatically, messages are being logged into console and syslog, it's working fine unless the message becomes larger than 65446 characters.

Is there any way in Syslog (Log4j2) for UDP to increase the limit size of message to be sent over network..

The following is the error it shows-:

2017-08-10 14:12:21,321 main ERROR Unable to write to stream UDP:localhost:514 for appender Bill: org.apache.logging.log4j.core.appender.AppenderLoggingException: Error flushing stream UDP:localhost:514
2017-08-10 14:12:21,322 main ERROR An exception occurred processing Appender Bill org.apache.logging.log4j.core.appender.AppenderLoggingException: Error flushing stream UDP:localhost:514
at org.apache.logging.log4j.core.appender.OutputStreamManager.flushDestination(OutputStreamManager.java:272)
at org.apache.logging.log4j.core.appender.OutputStreamManager.write(OutputStreamManager.java:228)
at org.apache.logging.log4j.core.appender.OutputStreamManager.write(OutputStreamManager.java:201)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.writeByteArrayToManager(AbstractOutputStreamAppender.java:186)
at org.apache.logging.log4j.core.appender.SocketAppender.directEncodeEvent(SocketAppender.java:446)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:170)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:161)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:448)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:433)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:403)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2091)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1988)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1960)
at org.apache.logging.log4j.spi.AbstractLogger.debug(AbstractLogger.java:311)
at Log4j2Example.main(Log4j2Example.java:81)
Caused by: java.net.SocketException: The message is larger than the maximum supported by the underlying transport: Datagram send failed
at java.net.DualStackPlainDatagramSocketImpl.socketSend(Native Method)
at java.net.DualStackPlainDatagramSocketImpl.send(Unknown Source)
at java.net.DatagramSocket.send(Unknown Source)
at org.apache.logging.log4j.core.net.DatagramOutputStream.flush(DatagramOutputStream.java:103)
at org.apache.logging.log4j.core.appender.OutputStreamManager.flushDestination(OutputStreamManager.java:270)
... 21 more



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