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https://issues.apache.org/jira/browse/LOG4J2-1200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15187208#comment-15187208
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Matt Sicker commented on LOG4J2-1200:
-------------------------------------
Of course you can! Patches are always welcome here. :)
> Kill process with Socket Appender causes flood of Connection-Reset logs
> -----------------------------------------------------------------------
>
> Key: LOG4J2-1200
> URL: https://issues.apache.org/jira/browse/LOG4J2-1200
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders, Core
> Affects Versions: 2.4.1
> Environment: win64 java8 osgi
> Reporter: Hüseyin Kartal
> Attachments:
> LOG4J2_1200___Kill_process_with_Socket_Appender_causes_flood_of_Connection_Reset_logs.patch
>
>
> Hi,
> we use primary the SocketAppender to send log messages to a server instance.
> The server instance is based on the TcpSocketServer and is started as follows:
> h1. Server Context
> h2. Startup
> {code}
> new TcpSocketServer<>(9500, new
> JsonInputStreamLogEventBridge()).startNewThread();
> {code}
> h2. Configuration
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration monitorInterval="0" strict="true" name="XMLConfig"
> status="error" shutdownHook="enable"
> xmlns="http://jakarta.apache.org/log4j2/config";
> xmlns:events="http://jakarta.apache.org/log4j2/events";
> xmlns:levels="http://jakarta.apache.org/log4j2/levels";
> xmlns:xi="http://www.w3.org/2001/XInclude";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://jakarta.apache.org/log4j2/config Log4j-config.xsd
> http://jakarta.apache.org/log4j2/events Log4j-events.xsd
> http://jakarta.apache.org/log4j2/levels Log4j-levels.xsd">
> <xi:include href="log4j2-properties.xml" />
> <Appenders>
> <Appender type="Console" name="OUT">
> <Layout Type="PatternLayout"
> Pattern="${sys:log.application}: ${pattern}" />
> </Appender>
> <Appender type="RollingRandomAccessFile" name="OUT-FILE"
> fileName="${file.name.out}${file.suffix}"
> filePattern="${file.name.out}-%2i${file.suffix}">
> <Layout Type="PatternLayout" Pattern="${pattern}" />
> <Policies>
> <SizeBasedTriggeringPolicy
> size="${sizeBasedTriggeringPolicy.size}" />
> </Policies>
> <DefaultRolloverStrategy
> max="${defaultRolloverStrategy.max}" fileIndex="min" />
> </Appender>
> <Appender type="RollingRandomAccessFile" name="ERR-FILE"
> fileName="${file.name.err}${file.suffix}"
> filePattern="${file.name.err}-%2i${file.suffix}">
> <Layout Type="PatternLayout" Pattern="${pattern}" />
> <Policies>
> <SizeBasedTriggeringPolicy
> size="${sizeBasedTriggeringPolicy.size}" />
> </Policies>
> <DefaultRolloverStrategy
> max="${defaultRolloverStrategy.max}" fileIndex="min" />
> </Appender>
> <Async name="ASYNC-OUT">
> <AppenderRef ref="OUT" />
> </Async>
> <Async name="ASYNC-OUT-FILE">
> <AppenderRef ref="OUT-FILE" />
> </Async>
> </Appenders>
> <Loggers>
> <asyncRoot level="all">
> <AppenderRef ref="ASYNC-OUT" />
> <AppenderRef ref="ASYNC-OUT-FILE" />
> </asyncRoot>
> <asyncLogger name="com" level="error" />
> <asyncLogger name="org" level="error" />
> <asyncLogger name="javax" level="error" />
> </Loggers>
> </Configuration>
> {code}
> h1. Client context
> h2. Configuration
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration monitorInterval="0" strict="true" name="XMLConfig"
> status="fatal" shutdownHook="enable"
> xmlns="http://jakarta.apache.org/log4j2/config";
> xmlns:events="http://jakarta.apache.org/log4j2/events";
> xmlns:levels="http://jakarta.apache.org/log4j2/levels";
> xmlns:xi="http://www.w3.org/2001/XInclude";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://jakarta.apache.org/log4j2/config Log4j-config.xsd
> http://jakarta.apache.org/log4j2/events Log4j-events.xsd
> http://jakarta.apache.org/log4j2/levels Log4j-levels.xsd">
> <xi:include href="log4j2-properties.xml" />
> <Appenders>
> <Appender type="Socket" name="OUT-SOCKET"
> host="${sys:log.host}" port="${sys:log.port}" protocol="${sys:log.protocol}"
> ignoreExceptions="false">
> <Layout type="JsonLayout" compact="true"
> eventEol="true" complete="true" properties="true" />
> </Appender>
> <Appender type="Failover" name="OUT-FAIL" primary="OUT-SOCKET">
> <Failovers>
> <Appender type="RollingRandomAccessFile"
> name="OUT-FILE" fileName="${file.name.tmp}${file.suffix}"
> filePattern="${file.name.tmp}-%2i${file.suffix}" ignoreExceptions="false">
> <Layout Type="PatternLayout"
> Pattern="${pattern.single}" />
> <Policies>
> <SizeBasedTriggeringPolicy
> size="${sizeBasedTriggeringPolicy.size}" />
> </Policies>
> <DefaultRolloverStrategy
> max="${defaultRolloverStrategy.max}" fileIndex="min" />
> </Appender>
> </Failovers>
> </Appender>
> <Async name="ASYNC-OUT-FAIL">
> <AppenderRef ref="OUT-FAIL" />
> </Async>
> </Appenders>
> <Loggers>
> <asyncRoot level="all">
> <AppenderRef ref="ASYNC-OUT-FAIL" />
> </asyncRoot>
> <asyncLogger name="com" level="error" />
> <asyncLogger name="org" level="error" />
> <asyncLogger name="javax" level="error" />
> </Loggers>
> </Configuration>
> {code}
> h1. Test
> h2. Code
> {code}
> public abstract class LogTest {
> public static void main(String... args) throws Exception {
> Logger logger = LogManager.getLogger();
> for (int i = 0; i < Integer.MAX_VALUE; i++) {
> logger.info(i);
> }
> System.exit(0);
> }
> }
> {code}
> h2. Result
> The client and server are started as different applications and uses seperate
> jvm. If the client terminates with system.exit everything is fine. But if the
> client is Terminiated by TaskKill or the jvm crashes. The server outputs
> multiple times the following trace.
> {code}
> 2015-11-18 11:26:33,479 Thread-9 ERROR java.net.SocketException: Connection
> reset
> at java.net.SocketInputStream.read(SocketInputStream.java:154)
> at java.net.SocketInputStream.read(SocketInputStream.java:141)
> at java.net.SocketInputStream.read(SocketInputStream.java:127)
> at
> org.apache.logging.log4j.core.net.server.InputStreamLogEventBridge.logEvents(InputStreamLogEventBridge.java:62)
> at
> org.apache.logging.log4j.core.net.server.TcpSocketServer$SocketHandler.run(TcpSocketServer.java:62)
> {code}
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