[logback-dev] [JIRA] Created: (LBCORE-228) Syslog messages over 64K are discarded

Pasi Eronen (JIRA) noreply-jira at qos.ch
Mon Oct 24 19:09:12 CEST 2011

Syslog messages over 64K are discarded

                 Key: LBCORE-228
                 URL: http://jira.qos.ch/browse/LBCORE-228
             Project: logback-core
          Issue Type: Bug
          Components: Appender
    Affects Versions: 0.9.30
            Reporter: Pasi Eronen
            Assignee: Logback dev list

SyslogAppenderBase truncates very long messages to 256k, which is not very useful limit, since SyslogOutputStream supports only UDP, which has maximum message size of 64k. Messages over 64k result in "java.io.IOException: Message too long" (from DatagramSocket.send, called from SyslogOutputStream.flush), but this exception is visible only in logger context status...

Proposed fix: truncate long messages instead of discarding them. More specifically, change MSG_SIZE_LIMIT in SyslogAppenderBase to 65000.

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