Async20Access. Failed to change state(true) on Ubuntu

[Илдус В]

Hello!

I use utgard library to connect opc server through Async20Access.
It works on windows, but on Ubuntu the following error:

Sending REQUEST
май 21, 2016 1:02:55 PM rpc.DefaultConnection processIncoming
INFO:
 Recieved FAULT
13:02:55.344 [main] ERROR org.openscada.opc.lib.da.AccessBase - Failed to change state (true)
org.jinterop.dcom.common.JIException: The RPC server is unavailable. Please check if the COM server is up and running and that route to the COM Server is accessible (A simple "Ping" to the Server machine would do). Also please confirm if the Windows Firewall is not blocking DCOM access. [0x800706BA]
    at org.jinterop.dcom.core.JIComServer.call(JIComServer.java:1004) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    at org.jinterop.dcom.core.JIComServer.call(JIComServer.java:951) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    at org.jinterop.dcom.core.JIComObjectImpl.call(JIComObjectImpl.java:295) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    at org.jinterop.dcom.core.JIComObjectImpl.call(JIComObjectImpl.java:161) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    at org.jinterop.dcom.core.JIFrameworkHelper.attachEventHandler(JIFrameworkHelper.java:285) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.dcom.da.impl.OPCGroupStateMgt.attach(OPCGroupStateMgt.java:188) ~[jar:rsrc:org.openscada.opc.dcom_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.lib.da.Group.attach(Group.java:408) ~[jar:rsrc:org.openscada.opc.lib_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.lib.da.Async20Access.start(Async20Access.java:67) ~[jar:rsrc:org.openscada.opc.lib_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.lib.da.AccessBase.connectionStateChanged(AccessBase.java:190) [jar:rsrc:org.openscada.opc.lib_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.lib.da.Server.addStateListener(Server.java:436) [jar:rsrc:org.openscada.opc.lib_1.1.0.v20130529.jar!/:na]
    at org.openscada.opc.lib.da.AccessBase.bind(AccessBase.java:96) [jar:rsrc:org.openscada.opc.lib_1.1.0.v20130529.jar!/:na]
    at fromOPCtoDB_Async.fromOPCtoDB_Async.main(fromOPCtoDB_Async.java:255) [rsrc:./:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_101]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_101]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_101]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_101]
    at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58) [asyncc.jar:na]
Caused by: rpc.FaultException: Received fault. (unknown)
    at rpc.ConnectionOrientedEndpoint.call(ConnectionOrientedEndpoint.java:147) ~[jar:rsrc:org.openscada.jinterop.deps_1.1.0.v20130529.jar!/:na]
    at rpc.Stub.call(Stub.java:134) ~[jar:rsrc:org.openscada.jinterop.deps_1.1.0.v20130529.jar!/:na]
    at org.jinterop.dcom.core.JIComServer.call(JIComServer.java:999) ~[jar:rsrc:org.openscada.jinterop.core_1.1.0.v20130529.jar!/:na]
    ... 16 common frames omitted

What's the problem?

[Jens Reimann]

Hi,

Did you check: The RPC server is unavailable. Please check if the COM server is up and running and that route to the COM Server is accessible (A simple "Ping" to the Server machine would do). Also please confirm if the Windows Firewall is not blocking DCOM access?

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[Илдус В]

Yes, COM server is up and running, DCOM settings are configurated, OPC server is available from Matrikon or any OPC clients.
SyncAccess method works stable on Windows and Ubuntu OS's.
Async20Access method works just on Windows OS, not on Ubuntu.
Trying on Ubuntu 12.04 and 14.04 under x32, x64.
Async20Access method was written under JRE 1.7 (SyncAccess method also).
Log:

[Jens Reimann]

Could this be an issue that the windows server cannot access the Ubuntu machine?

--

[Илдус В]

Ubuntu machine is connected to Windows OPC server directly through Ethernet cable, ping is OK. Also SyncAccess method working properly.

понедельник, 23 мая 2016 г., 13:05:21 UTC+3 пользователь Jens Reimann написал:

[Jens Reimann]

Will ping yes, but it could be a firewall issue?!

[Danish Shrestha]

Hi Илдус,
Did you find out what was causing the issue? I am running into the same issue trying to connect CentOS to windows OPC server.

Thanks,

Danish

[Danish Shrestha]

It was the firewall issue. I didnt realize with async in OPC the OPC server makes a new socket to the OPC Client in random high port. I had to add a rule to accept all connections from OPC Server to the client.

Danish