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https://issues.apache.org/jira/browse/LOG4J2-1922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113026#comment-16113026
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Gary Gregory commented on LOG4J2-1922:
--------------------------------------
You can run it from the command line with {{--help}}:
{noformat}
Usage: org.apache.logging.log4j.server.TcpSocketServer [options]
Options:
--backlog, -b
Server socket backlog.
Default: 50
--classes, -C
Additional classes to allow deserialization
--config, -c
Log4j configuration file location (path or URL).
--help, -?, -h
Prints this help.
Default: false
--interactive, -i
Accepts commands on standard input ("exit" is the only command).
Default: false
--localbindaddress, -a
Server socket local bind address.
--port, -p
Server socket port.
Default: 0
{noformat}
> SocketHandler leaks connection if EOFException is thrown
> --------------------------------------------------------
>
> Key: LOG4J2-1922
> URL: https://issues.apache.org/jira/browse/LOG4J2-1922
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.3
> Reporter: Kohei Tamura
>
> SocketHandler should close the input stream in the finally block.
> {code:title=TcpSocketServer.java|borderStyle=solid}
> /**
> * Thread that processes the events.
> */
> private class SocketHandler extends Thread {
> private final T inputStream;
> private volatile boolean shutdown = false;
> public SocketHandler(final Socket socket) throws IOException {
> this.inputStream =
> logEventInput.wrapStream(socket.getInputStream());
> }
> @Override
> public void run() {
> boolean closed = false;
> try {
> try {
> while (!shutdown) {
> logEventInput.logEvents(inputStream,
> TcpSocketServer.this);
> }
> } catch (final EOFException e) {
> closed = true;
> } catch (final OptionalDataException e) {
> logger.error("OptionalDataException eof=" + e.eof + "
> length=" + e.length, e);
> } catch (final IOException e) {
> logger.error("IOException encountered while reading from
> socket", e);
> }
> if (!closed) {
> try {
> inputStream.close();
> } catch (final Exception ex) {
> // Ignore the exception;
> }
> }
> } finally {
> handlers.remove(Long.valueOf(getId()));
> }
> }
> public void shutdown() {
> this.shutdown = true;
> interrupt();
> }
> }
> {code}
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