I keep periodically losing connection to the gateway (Ignition standard 8.3.0-beta4) when working in Designer. Seeing several UascClientMessageHandler & MulticastScheduler errors in the log. I’m working remotely and connecting to the gateway through a VPN. Could anyone confirm that it’s most likely a network issue? I also have a lot of clock drift warnings.
Ignition-DESKTOP-AAT48L4_Ignition_logs_20250911-0857.zip (9.3 MB)
Multicast is unrelated (it's only used for launcher auto-discovery of gateways on the network, not used for actual client/designer connections)
UascClientMessageHandler is also not connected, the Ua there is for OPC UA. That said, "a connection was aborted by software in your host machine" seems... suspicious.
In your full logs there are some client/designer related errors - new to 8.3, there's now a persistent websocket connection between the client/designer and the gateway, and there are (some) errors in that channel with the same "aborted by software in your host machine":
2025-09-11 07:14:09:040 webserver-67
Unable to send pong
org.eclipse.jetty.io.EofException: null
at org.eclipse.jetty.io.SocketChannelEndPoint.flush(SocketChannelEndPoint.java:117)
at org.eclipse.jetty.io.ssl.SslConnection.networkFlush(SslConnection.java:499)
at org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.flush(SslConnection.java:1134)
at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:422)
at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:275)
at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:254)
at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:368)
at org.eclipse.jetty.websocket.core.internal.FrameFlusher.process(FrameFlusher.java:333)
at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:262)
at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:243)
at org.eclipse.jetty.websocket.core.WebSocketConnection.enqueueFrame(WebSocketConnection.java:626)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession$OutgoingAdaptor.sendFrame(WebSocketCoreSession.java:699)
at org.eclipse.jetty.websocket.core.ExtensionStack.sendFrame(ExtensionStack.java:250)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession$Flusher.forwardFrame(WebSocketCoreSession.java:790)
at org.eclipse.jetty.websocket.core.util.FragmentingFlusher.onFrame(FragmentingFlusher.java:51)
at org.eclipse.jetty.websocket.core.util.TransformingFlusher$Flusher.process(TransformingFlusher.java:161)
at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:262)
at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:243)
at org.eclipse.jetty.websocket.core.util.TransformingFlusher.sendFrame(TransformingFlusher.java:78)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession.sendFrame(WebSocketCoreSession.java:508)
at org.eclipse.jetty.websocket.common.WebSocketSession.sendPong(WebSocketSession.java:153)
at com.inductiveautomation.ignition.gateway.servlets.GWSession$WebSocketEndpoint.onWebSocketPing(GWSession.java:489)
at org.eclipse.jetty.websocket.common.JettyWebSocketFrameHandler.onPingFrame(JettyWebSocketFrameHandler.java:306)
at org.eclipse.jetty.websocket.common.JettyWebSocketFrameHandler.onFrame(JettyWebSocketFrameHandler.java:214)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession$IncomingAdaptor.lambda$onFrame$0(WebSocketCoreSession.java:647)
at org.eclipse.jetty.server.handler.ContextHandler$ScopedContext.run(ContextHandler.java:1513)
at org.eclipse.jetty.server.handler.ContextHandler$ScopedContext.run(ContextHandler.java:1500)
at org.eclipse.jetty.websocket.core.server.internal.AbstractHandshaker$1.handle(AbstractHandshaker.java:179)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession$IncomingAdaptor.onFrame(WebSocketCoreSession.java:647)
at org.eclipse.jetty.websocket.core.ExtensionStack.onFrame(ExtensionStack.java:113)
at org.eclipse.jetty.websocket.core.WebSocketCoreSession.onFrame(WebSocketCoreSession.java:463)
at org.eclipse.jetty.websocket.core.WebSocketConnection.onFrame(WebSocketConnection.java:254)
at org.eclipse.jetty.websocket.core.WebSocketConnection.fillAndParse(WebSocketConnection.java:447)
at org.eclipse.jetty.websocket.core.WebSocketConnection.onFillable(WebSocketConnection.java:332)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
at org.eclipse.jetty.io.ssl.SslConnection$SslEndPoint.onFillable(SslConnection.java:575)
at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:390)
at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:150)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:478)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:441)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)
at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:979)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1209)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1164)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: An established connection was aborted by the software in your host machine
at java.base/sun.nio.ch.SocketDispatcher.writev0(Native Method)
at java.base/sun.nio.ch.SocketDispatcher.writev(Unknown Source)
at java.base/sun.nio.ch.IOUtil.write(Unknown Source)
at java.base/sun.nio.ch.IOUtil.write(Unknown Source)
at java.base/sun.nio.ch.SocketChannelImpl.write(Unknown Source)
at java.base/java.nio.channels.SocketChannel.write(Unknown Source)
at org.eclipse.jetty.io.SocketChannelEndPoint.flush(SocketChannelEndPoint.java:111)
... 49 common frames omitted