WinRM Error: java.net.SocketTimeoutException: connect timed out

[pts-aut]

We are using rundeck with overthere-winrm plugin and the default executors are set:

"node-executor": "overthere-winrm"
"file-copier": "overthere-winrm"

Also we have set the timeout parameters to a high value:

framework.winrm-timeout=PT1H
framework.winrm-connection-timeout=28800000

But in some executions we are getting an "connect timed out" error from the FileCopier - a retry is running without any problem.
Is there another parameter separately to winrm-connection-timeout for the FileCopier? The defined timeout values are not reached by far.

com.dtolabs.rundeck.core.execution.workflow.steps.node.NodeStepException: com.dtolabs.rundeck.core.execution.service.FileCopierException: WinRM Error: java.net.SocketTimeoutException: connect timed out
      at com.dtolabs.rundeck.plugin.copyfile.CopyFileNodeStepPlugin.copyFileList(CopyFileNodeStepPlugin.java:221) ~[?:?]
      at com.dtolabs.rundeck.plugin.copyfile.CopyFileNodeStepPlugin.executeNodeStep(CopyFileNodeStepPlugin.java:113) ~[?:?]
      at com.dtolabs.rundeck.core.execution.workflow.steps.node.NodeStepPluginAdapter.executeNodeStep(NodeStepPluginAdapter.java:167) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.ExecutionServiceImpl.executeNodeStep(ExecutionServiceImpl.java:206) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.dispatch.SequentialNodeDispatcher.dispatch(SequentialNodeDispatcher.java:130) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.dispatch.SequentialNodeDispatcher.dispatch(SequentialNodeDispatcher.java:61) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.ExecutionServiceImpl.dispatchToNodesWith(ExecutionServiceImpl.java:262) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.ExecutionServiceImpl.dispatchToNodes(ExecutionServiceImpl.java:233) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.steps.NodeDispatchStepExecutor.executeWorkflowStep(NodeDispatchStepExecutor.java:66) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.ExecutionServiceImpl.executeStep(ExecutionServiceImpl.java:111) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.BaseWorkflowExecutor.executeWFItem(BaseWorkflowExecutor.java:285) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.BaseWorkflowExecutor.executeWorkflowStep(BaseWorkflowExecutor.java:681) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.engine.StepCallable.apply(StepCallable.java:71) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.engine.StepOperation.apply(StepOperation.java:76) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.workflow.engine.StepOperation.apply(StepOperation.java:32) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.rules.WorkflowEngineOperationsProcessor.lambda$beginOperation$1(WorkflowEngineOperationsProcessor.java:323) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125) [guava-26.0-jre.jar!/:?]
      at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:57) [guava-26.0-jre.jar!/:?]
      at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78) [guava-26.0-jre.jar!/:?]
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
      at java.lang.Thread.run(Thread.java:829) [?:?]
 Caused by: com.dtolabs.rundeck.core.execution.service.FileCopierException: WinRM Error: java.net.SocketTimeoutException: connect timed out
      at com.dtolabs.rundeck.plugin.overthere.OTWinRMFileCopier.copyFileStream(OTWinRMFileCopier.java:129) ~[?:?]
      at com.dtolabs.rundeck.plugin.overthere.OTWinRMFileCopier.copyFile(OTWinRMFileCopier.java:139) ~[?:?]
      at com.dtolabs.rundeck.core.execution.service.MultiFileCopierUtil.copyMultipleFiles(MultiFileCopierUtil.java:62) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.core.execution.ExecutionServiceImpl.fileCopyFiles(ExecutionServiceImpl.java:352) ~[rundeck-core-4.8.0-20221110.jar!/:?]
      at com.dtolabs.rundeck.plugin.copyfile.CopyFileNodeStepPlugin.copyFileList(CopyFileNodeStepPlugin.java:207) ~[?:?]
      ... 21 more

Also the winrm settings on the destination host are set to high timeouts:

winrm get winrm/config
Config
    MaxEnvelopeSizekb = 4294967295
    MaxTimeoutms = 3600000
    MaxBatchItems = 4294967295
    MaxProviderRequests = 4294967295
    Client
        NetworkDelayms = 5000
        URLPrefix = wsman
        AllowUnencrypted = false
        Auth
            Basic = true
            Digest = true
            Kerberos = true
            Negotiate = true
            Certificate = true
            CredSSP = false
        DefaultPorts
            HTTP = 5985
            HTTPS = 5986
        TrustedHosts
    Service
        RootSDDL = O:NSG:BAD:P(A;;GA;;;BA)(A;;GR;;;IU)S:P(AU;FA;GA;;;WD)(AU;SA;GXGW;;;WD)
        MaxConcurrentOperations = 4294967295
        MaxConcurrentOperationsPerUser = 4294967295
        EnumerationTimeoutms = 4294967295
        MaxConnections = 300
        MaxPacketRetrievalTimeSeconds = 36000
        AllowUnencrypted = true
        Auth
            Basic = true
            Kerberos = true
            Negotiate = true
            Certificate = false
            CredSSP = false
            CbtHardeningLevel = Relaxed
        DefaultPorts
            HTTP = 5985
            HTTPS = 5986
        IPv4Filter = *
        IPv6Filter = *
        EnableCompatibilityHttpListener = false
        EnableCompatibilityHttpsListener = false
        CertificateThumbprint
        AllowRemoteAccess = true
    Winrs
        AllowRemoteShellAccess = true
        IdleTimeout = 2147483647
        MaxConcurrentUsers = 2147483647
        MaxShellRunTime = 2147483647
        MaxProcessesPerShell = 2147483647
        MaxMemoryPerShellMB = 4096
        MaxShellsPerUser = 2147483647

Debug output of a successful execution:

[overthere-winrm:hostname.local] 
[overthere-winrm:hostname.local] ConnectionOptions[
	connectionTimeoutMillis --> 28800000
	winrmEnableHttps --> false
	password --> ********
	address --> hostname.local
	os --> WINDOWS
	winrmKerberosUseHttpSpn --> false
	port --> 5985
	winrmKerberosAddPortToSpn --> false
	winrmTimeout --> PT1H
	file-copy-destination-dir --> C:/temp
	connectionType --> WINRM_INTERNAL
	username --> user1
]
[overthere-winrm:hostname.local] Destination file acquired C:\temp\file.ps1
[overthere-winrm:hostname.local] Copying file to C:\temp\file1.ps1
[overthere-winrm:hostname.local] File copied at: C:\temp\file1.ps1
[overthere-winrm:hostname.local] Closing connection
[overthere-winrm:hostname.local] 
[overthere-winrm:hostname.local] ConnectionOptions[
	connectionTimeoutMillis --> 28800000
	winrmEnableHttps --> false
	password --> ********
	address --> hostname.local
	os --> WINDOWS
	winrmKerberosUseHttpSpn --> false
	port --> 5985
	winrmKerberosAddPortToSpn --> false
	winrmTimeout --> PT1H
	file-copy-destination-dir --> C:/temp
	connectionType --> WINRM_INTERNAL
	username --> user1
]

Versions:
Rundeck 4.8.0
WinRM Plugin 1.3.8 (using com.xebialabs.overthere 5.0.2)