Since update to Openfire 4.8.0 users started "randomly" losing connections

Hello dear friends,

I have been using Openfire for a very long time, since before the name change. And I never really had any issues, it was working flawlessly. But now, since the update to 4.8.0, users (5 family members, all using Conversations/Android) started periodically losing connections to the server, and it looks like it’s happening at random times. In the Conversations client, under account settings, it shows that they are only, but if I take a look in the admin interface, no active sessions or just partially active sessions are shown, even tough all 5 device lie on my table, all connected to the internet.
If I disable the connection in the Conversation client, and the reenable it again, they are shown as active sessions again, and they receive all the undelivered messages.

Has something essential been changed in the way how clients are connected to the server? This is a big issue for us, because this has been our primary way of communication for the past 5+ years, and now it became very unreliable so we have to fallback to WhatsApp until I figure out what the issue is.

Nothing suspicious in the logs is happening.

If I set up connections from the Conversations client to another XMPP server, everything is working well as it used to be. To this must be server and update related.

Any ideas?

Hello!
Same as here. 8-10 Conversations Android client and Openfire as family / friends communications.
After upgrade to Java 21 and Openfire 4.8.0, then randomly users became offline.I restarted the server and a few hours it works again but after a while offline the clients again. Another issue is that I can’t set the group membership too. I have 4 groups separated. Played with the settings for a few days but no success. I reverted to Java 8 and Openfire 4.7.5 and all functions working well again. Server opsys is Windows 2019 Server on a VPS. I hope, the devs can do something.

1 Like

How did you revert back to OF 4.7.5? Did you had a snapshot+db backup?
I’d like to revert back as well, but I’d love to avoid reconfiguring everything from scratch.

Uninstalled 4.8.0 then reinstalled 4.7.5 and configured from zero point. I have 10 users and 4 groups, a TURN server nothing else. It takes 10 minutes only. It worth the work and I will never update the 4.7.5 because this is the most stable version. No memory leaks, no issues.

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This is a curious and concerning issue. I’ve not experienced it myself (that I know of).

Would you please enable debug logging, and review the logs after the problem occurs again. Openfire should log when it decides that a client is disconnected (even if the client doesn’t share the sentiment). This might provide valuable insights.

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I haven’t yet enabled debug logging, but this is what I recently got in my logs, when I lost the connection again:

2024.02.09 17:51:31.824 INFO  [proxy-connection-worker-59]: org.jivesoftware.openfire.filetransfer.proxy.ProxyConnectionManager - Unable to process data send through inbound connection from /51.15.x.x to file transfer proxy: Only SOCKS5 supported. Peer is sending something that is incompatible.
2024.02.09 17:51:31.871 INFO  [proxy-connection-worker-59]: org.jivesoftware.openfire.filetransfer.proxy.ProxyConnectionManager - Unable to process data send through inbound connection from /51.15.x.x to file transfer proxy: Error reading provided address
2024.02.09 17:51:31.918 INFO  [proxy-connection-worker-59]: org.jivesoftware.openfire.filetransfer.proxy.ProxyConnectionManager - Unable to process data send through inbound connection from /51.15.x.x to file transfer proxy: Error reading provided address
2024.02.09 17:57:30.296 ERROR [nioEventLoopGroup-3-8]: org.jivesoftware.openfire.nio.NettyConnection - Problem during connection close or cleanup
io.netty.handler.ssl.SslClosedEngineException: SSLEngine closed already
	at io.netty.handler.ssl.SslHandler.wrap(SslHandler.java:905) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:821) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:802) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:925) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:907) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:893) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.ChannelDuplexHandler.flush(ChannelDuplexHandler.java:127) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:923) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:941) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at org.jivesoftware.openfire.nio.NettyConnection.close(NettyConnection.java:213) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.Connection.close(Connection.java:177) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.nio.NettyConnectionHandler.channelUnregistered(NettyConnectionHandler.java:163) [xmppserver-4.8.0.jar:4.8.0]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:219) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelUnregistered(AbstractChannelHandlerContext.java:188) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelUnregistered(DefaultChannelPipeline.java:1388) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:215) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelUnregistered(DefaultChannelPipeline.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at java.lang.Thread.run(Thread.java:829) [?:?]
2024.02.09 17:58:29.350 ERROR [nioEventLoopGroup-3-7]: org.jivesoftware.openfire.nio.NettyConnection - Problem during connection close or cleanup
io.netty.handler.ssl.SslClosedEngineException: SSLEngine closed already
	at io.netty.handler.ssl.SslHandler.wrap(SslHandler.java:905) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:821) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:802) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:925) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:907) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:893) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.ChannelDuplexHandler.flush(ChannelDuplexHandler.java:127) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:923) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:941) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at org.jivesoftware.openfire.nio.NettyConnection.close(NettyConnection.java:213) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.Connection.close(Connection.java:177) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.nio.NettyConnectionHandler.channelUnregistered(NettyConnectionHandler.java:163) [xmppserver-4.8.0.jar:4.8.0]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:219) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelUnregistered(AbstractChannelHandlerContext.java:188) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelUnregistered(DefaultChannelPipeline.java:1388) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:215) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelUnregistered(DefaultChannelPipeline.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at java.lang.Thread.run(Thread.java:829) [?:?]
2024.02.09 18:03:12.832 WARN  [nioEventLoopGroup-3-12]: org.jivesoftware.openfire.nio.NettyXMPPDecoder - Error occurred while decoding XMPP stanza, closing connection: NettyConnection{peer: /194.165.x.x:56966, state: OPEN, session: null, Netty channel handler context name: NettyComponentConnectionHandler#0}
io.netty.handler.codec.DecoderException: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 0300002a25e00000000000436f6f6b69653a206d737473686173683d546573740d0a0100080003000000
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:499) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 0300002a25e00000000000436f6f6b69653a206d737473686173683d546573740d0a0100080003000000
	at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1313) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1383) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	... 17 more
2024.02.09 18:03:13.063 WARN  [nioEventLoopGroup-3-1]: org.jivesoftware.openfire.nio.NettyXMPPDecoder - Error occurred while decoding XMPP stanza, closing connection: NettyConnection{peer: /194.165.x.x:58362, state: OPEN, session: null, Netty channel handler context name: NettyComponentConnectionHandler#0}
io.netty.handler.codec.DecoderException: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 0300002a25e00000000000436f6f6b69653a206d737473686173683d546573740d0a0100080003000000
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:499) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 0300002a25e00000000000436f6f6b69653a206d737473686173683d546573740d0a0100080003000000
	at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1313) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1383) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468) ~[netty-codec-4.1.100.Final.jar:4.1.100.Final]
	... 17 more
2024.02.09 18:08:52.196 INFO  [proxy-connection-worker-60]: org.jivesoftware.openfire.filetransfer.proxy.ProxyConnectionManager - Unable to process data send through inbound connection from /223.11.x.x to file transfer proxy: Only SOCKS5 supported. Peer is sending something that is incompatible.
2024.02.09 18:36:56.398 INFO  [proxy-connection-worker-61]: org.jivesoftware.openfire.filetransfer.proxy.ProxyConnectionManager - Unable to process data send through inbound connection from /202.189.x.x to file transfer proxy: Illegal proxy transfer
2024.02.09 18:38:30.131 ERROR [nioEventLoopGroup-3-5]: org.jivesoftware.openfire.nio.NettyConnection - Problem during connection close or cleanup
io.netty.handler.ssl.SslClosedEngineException: SSLEngine closed already
	at io.netty.handler.ssl.SslHandler.wrap(SslHandler.java:905) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:821) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:802) ~[netty-handler-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:925) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:907) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:893) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.ChannelDuplexHandler.flush(ChannelDuplexHandler.java:127) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:923) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:941) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at org.jivesoftware.openfire.nio.NettyConnection.close(NettyConnection.java:213) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.Connection.close(Connection.java:177) [xmppserver-4.8.0.jar:4.8.0]
	at org.jivesoftware.openfire.nio.NettyConnectionHandler.channelUnregistered(NettyConnectionHandler.java:163) [xmppserver-4.8.0.jar:4.8.0]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:219) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelUnregistered(AbstractChannelHandlerContext.java:188) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelUnregistered(DefaultChannelPipeline.java:1388) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:215) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelUnregistered(AbstractChannelHandlerContext.java:195) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelUnregistered(DefaultChannelPipeline.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:821) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) [netty-transport-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.100.Final.jar:4.1.100.Final]
	at java.lang.Thread.run(Thread.java:829) [?:?]
2024.02.09 18:39:31.989 WARN  [nioEventLoopGroup-3-4]: org.jivesoftware.openfire.nio.NettyIdleStateKeepAliveHandler - Trying to ping a Netty connection that's idle, but has no corresponding Openfire session. Netty Connection: NettyConnection{peer: /79.252.61.200:36832, state: OPEN, session: LocalClientSession{address=username@jabber.mydomain.tld/Conversations.PvLH, streamID=5ift7cns0p, status=AUTHENTICATED, isEncrypted=true, isDetached=false, serverName='jabber.mydomain.tld', isInitialized=false, hasAuthToken=true, peer address='79.252.x.x', presence='
<presence type="unavailable"/>'}, Netty channel handler context name: NettyClientConnectionHandler#0}
2024.02.09 18:41:18.386 INFO  [nioEventLoopGroup-3-7]: org.jivesoftware.openfire.net.SASLAuthentication - Inbound Server p2.siacs.eu authenticated (via TLS)

Not sure if it is related to the issue.