[jacorb-developer] having a problem, and can't understand why
Fabrizio Vižintin
fabrizio.vizintin at gmail.com
Sun Jan 20 23:08:03 CET 2013
Hi,
I am working on a Java POS (point of sale) application that is in its 2
year of development.
The printing is implemented using the corba technology.
We have migrated from the standard com.sun.corba.se implementation to
jacorb.
The reasons of the migration are obvious, jacorb is just a better
implementation.
I can say that everything is working fine for now. We expect the first new
installations to happen at the beginning of Februrary.
I have a problem, that is happening on both implementations: standard and
jacorb.
So let me shortly explain how we print using corba.
We have an IDL interface that defines a Printer interface (with the main
method print(String XMLdata) ), a DeviceFactory interface, a
PrintetSettings valueType.
And we basically get the Printer from the DeviceFacotry that has a
getPrinter method (with some parameters). And then invoke the print method.
The problem is happening with the local connection ...
No problem with cllients from other machines :-)
Now, what happens is that the ip address returned from the server is almost
always 127.0.0.1 but on the print method the server is returning the
network address! And this is a problem if the network goes down.
I reproduced the behavior modifying the corbaloc example, and I'm attaching
a zip file containing all the sources.
The IDL have been extended by a new Printer interface, and the GoodDay
interface has a method Printer getPrinter.
runing ant, when the network cable is attached generates the output:
fvizinti at fvizinti-ubuntu ~/Downloads/src/jacorb-3.1/demo/corbaloc $ ant
Buildfile: /home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/build.xml
idl.taskdef:
idl:
[jacidl] processing idl file:
/home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/idl/server.idl
compile:
demo:
[jaco] Server 1 can be reached with:
[jaco] corbaloc::1.2 at localhost
:6969/HelloServer/HelloPOAP/HelloServerID
[jaco]
[jaco] Jan 20, 2013 10:52:40 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Jan 20, 2013 10:52:40 PM org.jacorb.orb.ORBSingleton <init>
[jaco] INFO: created ORBSingleton
[jaco] Jan 20, 2013 10:52:40 PM org.jacorb.poa.AOM add
[jaco] INFO: oid: 48 65 6C 6C 6F 53 65 72 76 65 72 49 44
HelloServerIDobject is activated
[jaco] Server 1 ior:
IOR:000000000000001D49444C3A6F6D672E6F72672F434F5242412F4F626A6563743A312E3000000000000000010000000000000050000102000000000A3132372E302E302E31001B390000002348656C6C6F5365727665722F48656C6C6F504F41502F48656C6C6F536572766572494400000000010000000000000008000000004A414300
[jaco] Adding object mapping for server 1
ior:IOR:000000000000001D49444C3A6F6D672E6F72672F434F5242412F4F626A6563743A312E3000000000000000010000000000000050000102000000000A3132372E302E302E31001B390000002348656C6C6F5365727665722F48656C6C6F504F41502F48656C6C6F536572766572494400000000010000000000000008000000004A414300
[jaco] Calling server using short key form...
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.orb.ORBSingleton <init>
[jaco] INFO: created ORBSingleton
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.giop.ClientConnectionManager getConnection
[jaco] INFO: ClientConnectionManager: created new ClientGIOPConnection
to 127.0.0.1:6969 (2a4983)
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.orb.Delegate getReplyGroup
[jaco] INFO: Adding new retry group for 127.0.0.1:6969
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ServerIIOPConnection configure
[jaco] INFO: Opened new server-side TCP/IP transport to 127.0.0.1:36270
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.poa.AOM add
[jaco] INFO: oid: 00 01 33 0D 1B 3E 4D 0E 02 32 10 06 30 46 38 14 14
1B 48 4C ..3..>M..2..0F8...HL1B
.object is activated
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.poa.POA getImplName
[jaco] INFO: Using server ID (6796505089) for transient POA
[jaco] Hello World, from SomewhereP
[jaco] EXECUTING WORK ON THE OBJECT
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Connected to 127.0.0.1:6969 from local port 36270
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.giop.ClientConnectionManager getConnection
[jaco] *INFO: ClientConnectionManager: created new
ClientGIOPConnection to 192.168.254.54:6969 (1b3f829)*
[jaco] Jan 20, 2013 10:53:10 PM org.jacorb.orb.Delegate getReplyGroup
[jaco] INFO: Adding new retry group for 192.168.254.54:6969
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Connected to 192.168.254.54:6969 from local port 47255
[jaco] Printing text: text to print
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ServerIIOPConnection configure
[jaco] INFO: Opened new server-side TCP/IP transport to
192.168.254.54:47255
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ServerIIOPConnection close
[jaco] INFO: Closed server-side transport to 192.168.254.54:47255
[jaco] Jan 20, 2013 10:53:10 PM
org.jacorb.orb.iiop.ServerIIOPConnection close
[jaco] INFO: Closed server-side transport to 127.0.0.1:36270
[touch] Creating
/home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/build/tmp/kill1099540429
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: prepare ORB for shutdown...
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: ORB going down...
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA HelloPOAT destroyed
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA HelloPOAP destroyed
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA RootPOA destroyed
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: ORB shutdown complete
[jaco] Jan 20, 2013 10:53:12 PM
org.jacorb.orb.iiop.IIOPListener$Acceptor run
[jaco] INFO: Listener exiting
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.util.threadpool.ConsumerTie
run
[jaco] INFO: ConsumerTie exited
[jaco] Jan 20, 2013 10:53:12 PM org.jacorb.util.threadpool.ConsumerTie
run
[jaco] INFO: ConsumerTie exited
BUILD SUCCESSFUL
Total time: 34 seconds
You can see the network address 192.168.254.54, and its returned when
invoking the printText method (right after the line Printer printer =
goodDay.getPrinter("NAME");)
Now, if you start again ant, then wait for the server to come alive, and
then unplug the network cable, we can't print ... here is the output:
fvizinti at fvizinti-ubuntu ~/Downloads/src/jacorb-3.1/demo/corbaloc $ ant
Buildfile: /home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/build.xml
idl.taskdef:
idl:
[jacidl] processing idl file:
/home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/idl/server.idl
compile:
demo:
[jaco] Jan 20, 2013 10:56:50 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Jan 20, 2013 10:56:50 PM org.jacorb.orb.ORBSingleton <init>
[jaco] INFO: created ORBSingleton
[jaco] Jan 20, 2013 10:56:50 PM org.jacorb.poa.AOM add
[jaco] INFO: oid: 48 65 6C 6C 6F 53 65 72 76 65 72 49 44
HelloServerIDobject is activated
[jaco] Server 1 can be reached with:
[jaco] corbaloc::1.2 at localhost
:6969/HelloServer/HelloPOAP/HelloServerID
[jaco]
[jaco] Server 1 ior:
IOR:000000000000001D49444C3A6F6D672E6F72672F434F5242412F4F626A6563743A312E3000000000000000010000000000000050000102000000000A3132372E302E302E31001B390000002348656C6C6F5365727665722F48656C6C6F504F41502F48656C6C6F536572766572494400000000010000000000000008000000004A414300
[jaco] Adding object mapping for server 1
ior:IOR:000000000000001D49444C3A6F6D672E6F72672F434F5242412F4F626A6563743A312E3000000000000000010000000000000050000102000000000A3132372E302E302E31001B390000002348656C6C6F5365727665722F48656C6C6F504F41502F48656C6C6F536572766572494400000000010000000000000008000000004A414300
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.orb.ORBSingleton <init>
[jaco] INFO: created ORBSingleton
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.config.JacORBConfiguration
<init>
[jaco] WARNING: no properties found for configuration jacorb
[jaco] Calling server using short key form...
[jaco] Jan 20, 2013 10:57:20 PM
org.jacorb.orb.giop.ClientConnectionManager getConnection
[jaco] INFO: ClientConnectionManager: created new ClientGIOPConnection
to 127.0.0.1:6969 (c7b00c)
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.orb.Delegate getReplyGroup
[jaco] INFO: Adding new retry group for 127.0.0.1:6969
[jaco] Jan 20, 2013 10:57:20 PM
org.jacorb.orb.iiop.ServerIIOPConnection configure
[jaco] INFO: Opened new server-side TCP/IP transport to 127.0.0.1:36282
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.poa.AOM add
[jaco] INFO: oid: 00 01 33 11 01 04 1F 0A 35 24 10 06 30 46 38 14 14
1B 48 4C ..3.....5$..0F8...HL1B
.object is activated
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.poa.POA getImplName
[jaco] INFO: Using server ID (1890388230) for transient POA
[jaco] Hello World, from SomewhereP
[jaco] EXECUTING WORK ON THE OBJECT
[jaco] Jan 20, 2013 10:57:20 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Connected to 127.0.0.1:6969 from local port 36282
[jaco] Jan 20, 2013 10:57:20 PM
org.jacorb.orb.giop.ClientConnectionManager getConnection
[jaco] INFO: ClientConnectionManager: created new ClientGIOPConnection
to 192.168.254.54:6969 (15a0305)
[jaco] Jan 20, 2013 10:57:20 PM org.jacorb.orb.Delegate getReplyGroup
[jaco] INFO: Adding new retry group for 192.168.254.54:6969
[jaco] Jan 20, 2013 10:57:20 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Retrying to connect to 192.168.254.54:6969
[jaco] Jan 20, 2013 10:57:21 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Retrying to connect to 192.168.254.54:6969
[jaco] Jan 20, 2013 10:57:21 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Retrying to connect to 192.168.254.54:6969
[jaco] Jan 20, 2013 10:57:22 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Retrying to connect to 192.168.254.54:6969
[jaco] Jan 20, 2013 10:57:22 PM
org.jacorb.orb.iiop.ClientIIOPConnection connect
[jaco] INFO: Retrying to connect to 192.168.254.54:6969
[jaco] Exception in thread "main" org.omg.CORBA.TRANSIENT: Retries
exceeded, couldn't reconnect to 192.168.254.54:6969
[jaco] at
org.jacorb.orb.iiop.ClientIIOPConnection.connect(ClientIIOPConnection.java:223)
[jaco] at
org.jacorb.orb.giop.GIOPConnection.sendMessage(GIOPConnection.java:1042)
[jaco] at
org.jacorb.orb.giop.GIOPConnection.sendRequest(GIOPConnection.java:987)
[jaco] at
org.jacorb.orb.giop.ClientConnection.sendRequest(ClientConnection.java:308)
[jaco] at
org.jacorb.orb.giop.ClientConnection.sendRequest(ClientConnection.java:289)
[jaco] at org.jacorb.orb.Delegate._invoke_internal(Delegate.java:1335)
[jaco] at org.jacorb.orb.Delegate.invoke_internal(Delegate.java:1160)
[jaco] at org.jacorb.orb.Delegate.invoke(Delegate.java:1148)
[jaco] at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:80)
[jaco] at demo.corbaloc._PrinterStub.printText(_PrinterStub.java:37)
[jaco] at demo.corbaloc.Client.main(Client.java:36)
[jaco] Jan 20, 2013 10:57:23 PM
org.jacorb.orb.iiop.ServerIIOPConnection close
[jaco] INFO: Closed server-side transport to 127.0.0.1:36282
[jaco] Java Result: 1
[touch] Creating
/home/fvizinti/Downloads/src/jacorb-3.1/demo/corbaloc/build/tmp/kill1331427440
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: prepare ORB for shutdown...
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: ORB going down...
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA HelloPOAT destroyed
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA HelloPOAP destroyed
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.poa.POA
makeDestructionComplete
[jaco] INFO: POA RootPOA destroyed
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.orb.ORB shutdown
[jaco] INFO: ORB shutdown complete
[jaco] Jan 20, 2013 10:57:24 PM
org.jacorb.orb.iiop.IIOPListener$Acceptor run
[jaco] INFO: Listener exiting
[jaco] Jan 20, 2013 10:57:24 PM org.jacorb.util.threadpool.ConsumerTie
run
[jaco] INFO: ConsumerTie exited
BUILD SUCCESSFUL
Total time: 36 seconds
Our workaround is to instantiate the Printer locally (bypassing the corba
infrastructure) when the request for printing is coming from the local
machine to the locally attached printer, but this is not what we want.
So please, can you look at the code example, and tell us what we are doing
wrong.
Thanks in advance.
Fabrizio
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