Incorporeting C++ code in RMI-IIOP
Pardon me if its already been discussed in the forum. As I'm new to RMI-IIOP, I am just wondering how would I incorporate C++ client code in a RMI-IIOP system? Please let me know any tutorial/article or anything regarding this metter.
Cheers.
Need to know Corba for that
Cheeeeeeeeeeeeeeeeeeeeers
Similar Messages
-
Simple RMI/IIOP app : "no security manager: RMI class loader disabled"
Hello colleagues!
I do not understand the problem at all, and asking for your kind help.
This is my first code for RMI/IIOP. We are using JBoss as application server.
What I've done :
1) created test.Command interface , extending Remote
2) created test.CommandImpl , implementing above mentioned interface and java.io.Serializable, and extending javax.rmi.PortableRemoteObject.
BTW, Serializable is not implemented in some tutorials, but absence of Serializable causes NotSerializableException when trying to rebind (next step).
3) in server code, created initial context and called
context.rebind("test/Command",new CommandImpl());
4) Ran rmic -iiop test.CommandImpl . A result was two new cass files, CommandImplTie.class and CommandStub.class , both are also in package "test".
5) Created remote client and put CommandStub.class to client
classpath (under package "test", too).
6) In client code, initialized the context and called
context.lookup("test/Command").
On this line (lookup), the following exception is being raised :
javax.naming.CommunicationException. Root exception is java.lang.ClassNotFoundException: test.CommandImpl (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:368)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:161)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:631)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:200)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1513)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:30)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:514)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:471)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
Is _Stub class all that client needs from server classes, to obtain
the reference ? I tried to put _Tie also to client, but with the same result.
All Jndi paths to JBoss server are correct, as I've used them successfully in other applications.
Many thanks in advance,
DanielNext few words to the topic.
I made tests with canonical RMI/IIOP tutorial from Sun.
When I use Sun's ORB (orbd.exe) , everything work fine. I started
orbd on the same PC as JBoss, and client and server are running
remotely.
But with JBoss ORB, I have the same exception as described above.
Server starts and registers in JNDI successfully, but client can not
obtain a remote reference. Exception is being thrown on
context.lookup().
So the difference is definitely in security managers for two ORBs.
I also tried to create new RMISecurityMananger and set it, but with
no effect.
Any ideas ?
TIA,
Daniel. -
Hi,
I'd like to know whether it is possible to use RMI-IIOP [1] to connect a Java component to a C++ component on a remote end and use "mobile code" [2]. In other words, a C++ client connects to a remote Java component, downloads a class file and executes it locally. On the flip side, a C++ component uploads a class file to a Java end for remote execution.
I see much discussion about the value of RMI-IIOP for connecting Java and C++ components but I see little value for this if you lose the "mobile code" capability. What are the advantages of using RMI vs RMI-IIOP vs "web services"? Am I missing something?
Thank you,
Gili
[1] http://java.sun.com/products/rmi-iiop/
[2] http://en.wikipedia.org/wiki/Mobile_codeI'd like to know whether it is possible to use RMI-IIOP [1] to connect a Java component to a C++ component on a remote endYes, provided you start with a Java interface and generate IDL from that.
and use "mobile code" [2]. In other words, a C++ client connects to a remote Java component, downloads a class file and executes it locally. On the flip side, a C++ component uploads a class file to a Java end for remote execution.C++ can execute or create Java objects via JNI but that implies a JVM anyway at the C++ end, so why not just use Java? IOW it's a lot of trouble for nothing.
I see much discussion about the value of RMI-IIOP for connecting Java and C++ components but I see little value for this if you lose the "mobile code" capability.All the rest of RMI and Corba is 'little'? -
Transactions Sample RMI-IIOP Code
Hi,
Looking to the link below it appears that we can have RMI-IIOP applications
and clients that use JTA.
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
Does anyone know of a RMI-IIOP sample that illustrates how transactions are
propagated from RMI-IIOP clients to RMI-IIOP applications?
Regards,
Dan Cimpoesu
But if you look to the diagram:
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1040200
it suggests that transactional context is passed from clients to RMI-IIOP
servers.
Am I wrong?
Dan
"Andy Piper" <[email protected]> wrote in message
news:[email protected]..
"Dan Cimpoesu" <[email protected]> writes:
Transactions over IIOP are not supported or implemented in WLS 6.1 or
previous. This is a feature of WLS 7.0. In 7.0 we implement OTS.
andy
Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across
RMI-IIOP
clients and RMI-IIOP applications (servers).
I followed up the "Transactions Sample RMI Code" section but it appearsthat
the transaction context is not propagated from client to server. I amalso
surprised by the note:
Note: These code fragments do not derive from any of the sampleapplications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there anyone who successfully had RMI-IIOP applications (servers)
participating in distributed transactions?
Is there any sample code that illustrates RMI-IIOP applications(servers)
participating in distributed transactions?
If anyone thinks that this should work I will post my code that does not
work.
Regards,
Dan Cimpoesu -
How to configure OC4J using RMI/IIOP with SSL
Any help?
I just mange configure the OC4J using RMI/IIOP but base on
But when I follow further to use RMI/IIOP with SSL I face the problem with: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
p/s: I use self generate keystore which should be ok as I can use it for https connection.
Any one can help?
Below is the OC4J log:
D:\oc4j\j2ee\home>java -Djavax.net.debug=all -DGenerateIIOP=true -Diiop.runtime.debug=true -jar oc4j.jar
05/02/23 16:43:16 ================ IIOPServerExtensionProvider.preInitApplicationServer
05/02/23 16:43:38 ================= IIOPServerExtensionProvider.postInitApplicationServer
05/02/23 16:43:38 ================== config = {SEPS={IIOP={ssl-port=5556, port=5555, ssl=true, trusted-clients=*, ssl-client-server-auth-port=5557, keystore=D:\\oc4j\\j2ee\\home\\server.keystore, keystore-password=123456, truststore=D:\\oc4j\\j2ee\\home\\server.keystore, truststore-password=123456, ClassName=com.oracle.iiop.server.IIOPServerExtensionProvider, host=localhost}}}
05/02/23 16:43:38 ================== server.getAttributes() = {threadPool=com.evermind.server.ApplicationServerThreadPool@968fda}
05/02/23 16:43:38 ================== pool: null
05/02/23 16:43:38 ====================== In startServer ...
05/02/23 16:43:38 ==================== Creating an IIOPServer ...
05/02/23 16:43:38 ========= IIOP server being initialized
05/02/23 16:43:38 SSL port: 5556
05/02/23 16:43:38 SSL port 2: 5557
05/02/23 16:43:43 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): getEndpoint(IIOP_CLEAR_TEXT, 5555, null)
05/02/23 16:43:43 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): createListener( socketType = IIOP_CLEAR_TEXT port = 5555 )
05/02/23 16:43:44 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): getEndpoint(SSL, 5556, null)
05/02/23 16:43:44 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): createListener( socketType = SSL port = 5556 )
05/02/23 16:43:45 ***
05/02/23 16:43:45 found key for : mykey
05/02/23 16:43:45 chain [0] = [
Version: V1
Subject: CN=Server, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
Signature Algorithm: MD5withRSA, OID = 1.2.840.113549.1.1.4
Key: SunJSSE RSA public key:
public exponent:
010001
modulus:
b1239fff 2ae5d31d b01a0cfb 1186bae0 bbc7ac41 94f24464 e92a7e33 6a5b0844
109e30fb d24ad770 99b3ff86 bd96c705 56bf2e7a b3bb9d03 40fdcc0a c9bea9a1
c21395a4 37d8b2ce ff00eb64 e22a6dd6 97578f92 29627229 462ebfee 061c99a4
1c69b3a0 aea6a95b 7ed3fd89 f829f17e a9362efe ccf8034a 0910989a a8573305
Validity: [From: Wed Feb 23 15:57:28 SGT 2005,
To: Tue May 24 15:57:28 SGT 2005]
Issuer: CN=Server, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
SerialNumber: [ 421c3768]
Algorithm: [MD5withRSA]
Signature:
0000: 34 F4 FA D4 6F 23 7B 84 30 42 F3 5C 4B 5E 18 17 4...o#..0B.\K^..
0010: 73 69 73 A6 BF 9A 5D C0 67 8D C3 56 DF A9 4A AC sis...].g..V..J.
0020: 88 AF 24 28 C9 39 16 22 29 81 01 93 86 AA 1A 5D ..$(.9.")......]
0030: 07 89 26 22 91 F0 8F DE E1 4A CF 17 9A 02 51 7D ..&".....J....Q.
0040: 92 D3 6D 9B EF 5E C1 C6 66 F9 11 D4 EB 13 8F 17 ..m..^..f.......
0050: E7 66 58 9F 6C B0 60 7C 39 B4 E0 B7 04 A7 7F A6 .fX.l.`.9.......
0060: 4D A5 89 E7 F4 8A DC 59 B4 E7 A5 D4 0A 35 9A F1 M......Y.....5..
0070: A2 CD 3A 04 D6 8F 16 B1 9E 6F 34 40 E8 C0 47 03 ..:[email protected].
05/02/23 16:43:45 ***
05/02/23 16:43:45 adding as trusted cert:
05/02/23 16:43:45 Subject: CN=Client, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
05/02/23 16:43:45 Issuer: CN=Client, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
05/02/23 16:43:45 Algorithm: RSA; Serial number: 0x421c3779
05/02/23 16:43:45 Valid from Wed Feb 23 15:57:45 SGT 2005 until Tue May 24 15:57:45 SGT 2005
05/02/23 16:43:45 adding as trusted cert:
05/02/23 16:43:45 Subject: CN=Server, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
05/02/23 16:43:45 Issuer: CN=Server, OU=Bar, O=Foo, L=Some, ST=Where, C=UN
05/02/23 16:43:45 Algorithm: RSA; Serial number: 0x421c3768
05/02/23 16:43:45 Valid from Wed Feb 23 15:57:28 SGT 2005 until Tue May 24 15:57:28 SGT 2005
05/02/23 16:43:45 trigger seeding of SecureRandom
05/02/23 16:43:45 done seeding SecureRandom
05/02/23 16:43:45 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): getEndpoint(SSL_MUTUALAUTH, 5557, null)
05/02/23 16:43:45 com.sun.corba.ee.internal.iiop.GIOPImpl(Thread[Orion Launcher,5,main]): createListener( socketType = SSL_MUTUALAUTH port = 5557 )
05/02/23 16:43:45 matching alias: mykey
matching alias: mykey
05/02/23 16:43:46 ORB created ..com.oracle.iiop.server.OC4JORB@65b738
05/02/23 16:43:47 com.sun.corba.ee.internal.corba.ClientDelegate(Thread[Orion Launcher,5,main]): invoke(ClientRequest) called
05/02/23 16:43:47 com.oracle.iiop.server.OC4JORB(Thread[Orion Launcher,5,main]): process: dispatching to scid 2
05/02/23 16:43:47 com.oracle.iiop.server.OC4JORB(Thread[Orion Launcher,5,main]): dispatching to sc [email protected]7
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ClientDelegate(Thread[Orion Launcher,5,main]): invoke(ClientRequest) called
05/02/23 16:43:48 com.oracle.iiop.server.OC4JORB(Thread[Orion Launcher,5,main]): process: dispatching to scid 2
05/02/23 16:43:48 com.oracle.iiop.server.OC4JORB(Thread[Orion Launcher,5,main]): dispatching to sc com.sun.corba.ee.internal.corba.ServerDelegate@9300cc
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ServerDelegate(Thread[Orion Launcher,5,main]): Entering dispatch method
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ServerDelegate(Thread[Orion Launcher,5,main]): Consuming service contexts, GIOP version: 1.2
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ServerDelegate(Thread[Orion Launcher,5,main]): Has code set context? false
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ServerDelegate(Thread[Orion Launcher,5,main]): Dispatching to servant
05/02/23 16:43:48 com.sun.corba.ee.internal.corba.ServerDelegate(Thread[Orion Launcher,5,main]): Handling invoke handler type servant
05/02/23 16:43:48 NS service created and started ..org.omg.CosNaming._NamingContextExtStub:IOR:000000000000002b49444c3a6f6d672e6f72672f436f734e616d696e672f4e616d696e67436f6e746578744578743a312e30000000000001000000000000007c000102000000000c31302e312e3231342e31310015b3000000000031afabcb0000000020d309e06a0000000100000000000000010000000c4e616d65536572766963650000000004000000000a0000000000000100000001000000200000000000010001000000020501000100010020000101090000000100010100
05/02/23 16:43:48 NS ior = ..IOR:000000000000002b49444c3a6f6d672e6f72672f436f734e616d696e672f4e616d696e67436f6e746578744578743a312e30000000000001000000000000007c000102000000000c31302e312e3231342e31310015b3000000000031afabcb0000000020d309e06a0000000100000000000000010000000c4e616d65536572766963650000000004000000000a0000000000000100000001000000200000000000010001000000020501000100010020000101090000000100010100
05/02/23 16:43:48 Oracle Application Server Containers for J2EE 10g (9.0.4.0.0) initialized
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.ConnectionTable(Thread[JavaIDL Listener,5,main]): Server getConnection(119e583[Unknown 0x0:0x0: Socket[addr=/127.0.0.1,port=1281,localport=5556]], SSL)
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.ConnectionTable(Thread[JavaIDL Listener,5,main]): host = 127.0.0.1 port = 1281
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.ConnectionTable(Thread[JavaIDL Listener,5,main]): Created connection Connection[type=SSL remote_host=127.0.0.1 remote_port=1281 state=ESTABLISHED]
com.sun.corba.ee.internal.iiop.MessageMediator(Thread[JavaIDL Reader for 127.0.0.1:1281,5,main]): Creating message from stream
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, handling exception: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, SEND TLSv1 ALERT: fatal, description = unexpected_message
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, WRITE: TLSv1 Alert, length = 2
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called closeSocket()
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.ReaderThread(Thread[JavaIDL Reader for 127.0.0.1:1281,5,main]): IOException in createInputStream: javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
05/02/23 16:45:14 javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.SSLSocketImpl.d(DashoA12275)
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.AppInputStream.read(DashoA12275)
05/02/23 16:45:14 at com.sun.corba.ee.internal.iiop.messages.MessageBase.readFully(MessageBase.java:520)
05/02/23 16:45:14 at com.sun.corba.ee.internal.iiop.messages.MessageBase.createFromStream(MessageBase.java:58)
05/02/23 16:45:14 at com.sun.corba.ee.internal.iiop.MessageMediator.processRequest(MessageMediator.java:110)
05/02/23 16:45:14 at com.sun.corba.ee.internal.iiop.IIOPConnection.processInput(IIOPConnection.java:339)
05/02/23 16:45:14 at com.sun.corba.ee.internal.iiop.ReaderThread.run(ReaderThread.java:63)
05/02/23 16:45:14 Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.InputRecord.b(DashoA12275)
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.InputRecord.read(DashoA12275)
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.SSLSocketImpl.j(DashoA12275)
05/02/23 16:45:14 at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
05/02/23 16:45:14 ... 6 more
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.IIOPConnection(Thread[JavaIDL Reader for 127.0.0.1:1281,5,main]): purge_calls: starting: code = 1398079696 die = true
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called close()
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called closeInternal(true)
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called close()
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called closeInternal(true)
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called close()
05/02/23 16:45:14 JavaIDL Reader for 127.0.0.1:1281, called closeInternal(true)
05/02/23 16:45:14 com.sun.corba.ee.internal.iiop.ConnectionTable(Thread[JavaIDL Reader for 127.0.0.1:1281,5,main]): DeleteConn called: host = 127.0.0.1 port = 1281Good point, I do belive what you are referring to is this:
Any client, whether running inside a server or not, has EJB security properties. Table 15-2 lists the EJB client security properties controlled by the ejb_sec.properties file. By default, OC4J searches for this file in the current directory when running as a client, or in ORACLE_HOME/j2ee/home/config when running in the server. You can specify the location of this file explicitly with the system property setting -Dejb_sec_properties_location=pathname.
Table 15-2 EJB Client Security Properties
Property Meaning
# oc4j.iiop.keyStoreLoc
The path and name of the keystore. An absolute path is recommended.
# oc4j.iiop.keyStorePass
The password for the keystore.
# oc4j.iiop.trustStoreLoc
The path name and name of the truststore. An absolute path is recommended.
# oc4j.iiop.trustStorePass
The password for the truststore.
# oc4j.iiop.enable.clientauth
Whether the client supports client-side authentication. If this property is set to true, you must specify a keystore location and password.
# oc4j.iiop.ciphersuites
Which cipher suites are to be enabled. The valid cipher suites are:
TLS_RSA_WITH_RC4_128_MD5
SSL_RSA_WITH_RC4_128_MD5
TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA
TLS_RSA_EXPORT_WITH_RC4_40_MD5
SSL_RSA_EXPORT_WITH_RC4_40_MD5
TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA
SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA
nameservice.useSSL
Whether to use SSL when making the initial connection to the server.
client.sendpassword
Whether to send user name and password in clear form (unencrypted) in the service context when not using SSL. If this property is set to true, the user name and password are sent only to servers listed in the trustedServer list.
oc4j.iiop.trustedServers
A list of servers that can be trusted to receive passwords sent in clear form. This has no effect if client.sendpassword is set to false. The list is comma-delimited. Each entry in the list can be an IP address, a host name, a host name pattern (for example, *.example.com), or * (where "*" alone means that all servers are trusted. -
I got the rmi-iiop example code to work just fine, but I tried extending
it a little and strangeness ensues. Here's what I did:
I'm using a stock weblogic 6.0 install on solaris 8 (sparc). I added
the following new method to the Trader interface:
public void func(javax.naming.Name n) throws RemoteException;
and I added the implementation of that method to TraderBean like so:
public void func(javax.naming.Name n) {
System.out.prinltn("n [" + n + "]");
I then added a call to the new Trader function to the end of the
example() method in Client, just before the trader is removed:
try {
com.sun.jndi.ldap.LdapName lname =
new com.sun.jndi.ldap.LdapName("a=b");
trader.func(lname);
} catch (javax.naming.NamingException ne) {
ne.printStackTrace();
Then I compiled everything using the supplied build.sh, copied the
ejb_over_iiop.jar into config/mydomain/applications, and ran
startWebLogic.sh int the config/mydomain directory to start the server.
I then run the client like so (using the 1.3 java version included with
weblogic 6.0):
java -cp
/opt/bea/wlserver6.0/config/examples/clientclasses:/opt/bea/wlserver6.0/config/mydomain/applications:/opt/bea/wlserver6.0/lib/weblogic.jar
examples.rmi_iiop.ejb.rmi_iiop.Client iiop://localhost:7001
And I get the following output:
Beginning statelessSession.Client...
Creating a trader
Buying 100 shares of BEAS.
Buying 200 shares of MSFT.
Buying 300 shares of AMZN.
Buying 400 shares of HWP.
Selling 100 shares of BEAS.
Selling 200 shares of MSFT.
Selling 300 shares of AMZN.
Selling 400 shares of HWP.
There was an exception while creating and using the Trader.
This indicates that there was a problem communicating with the server:
java.rmi.RemoteException: CORBA UNKNOWN 0 No; nested exception is:
org.omg.CORBA.UNKNOWN: minor code: 0 completed: No
End statelessSession.Client...
Basically the call to the new method fails, and the server communication
error it produces doesn't provide much information. So question #1 is,
what's going on here?
And here's the really weird part: if I change the method signatures in
Trader and TraderBean so that the argument type is the concrete class
com.sun.jndi.ldap.LdapName instead of the interface javax.naming.Name
(which does extend java.io.Serializable, incidentally), it works fine!
I tried this with my own interfaces and concrete classes, and I get the
same strange behavior: calling methods with interface argument types on
the ejb via rmi-iiop fails with the above cryptic error, but methods
with concrete argument types work fine.
I also tried this out on a non-ejb rmi-iiop server object using jdk 1.3
but not weblogic. In that case both interfaces and concrete method
argument types work just fine.
Now I'm wondering if this could be a bug in weblogic.ejbc's iiop
generation. Can anyone else verify this problem?
Edwin Park
[email protected]Comments in line...
Edwin Park wrote:
I got the rmi-iiop example code to work just fine, but I tried extending
it a little and strangeness ensues. Here's what I did:
I'm using a stock weblogic 6.0 install on solaris 8 (sparc). I added
the following new method to the Trader interface:
public void func(javax.naming.Name n) throws RemoteException;
and I added the implementation of that method to TraderBean like so:
public void func(javax.naming.Name n) {
System.out.prinltn("n [" + n + "]");
I then added a call to the new Trader function to the end of the
example() method in Client, just before the trader is removed:
try {
com.sun.jndi.ldap.LdapName lname =
new com.sun.jndi.ldap.LdapName("a=b");
trader.func(lname);
} catch (javax.naming.NamingException ne) {
ne.printStackTrace();
Then I compiled everything using the supplied build.sh, copied the
ejb_over_iiop.jar into config/mydomain/applications, and ran
startWebLogic.sh int the config/mydomain directory to start the server.
I then run the client like so (using the 1.3 java version included with
weblogic 6.0):
java -cp
/opt/bea/wlserver6.0/config/examples/clientclasses:/opt/bea/wlserver6.0/config/mydomain/applications:/opt/bea/wlserver6.0/lib/weblogic.jar
examples.rmi_iiop.ejb.rmi_iiop.Client iiop://localhost:7001
And I get the following output:
Beginning statelessSession.Client...
Creating a trader
Buying 100 shares of BEAS.
Buying 200 shares of MSFT.
Buying 300 shares of AMZN.
Buying 400 shares of HWP.
Selling 100 shares of BEAS.
Selling 200 shares of MSFT.
Selling 300 shares of AMZN.
Selling 400 shares of HWP.
There was an exception while creating and using the Trader.
This indicates that there was a problem communicating with the server:
java.rmi.RemoteException: CORBA UNKNOWN 0 No; nested exception is:
org.omg.CORBA.UNKNOWN: minor code: 0 completed: No
End statelessSession.Client...
Basically the call to the new method fails, and the server communication
error it produces doesn't provide much information. So question #1 is,
what's going on here?
Marshaling through the interface apparently fails. What orb are you using on the client?
>
And here's the really weird part: if I change the method signatures in
Trader and TraderBean so that the argument type is the concrete class
com.sun.jndi.ldap.LdapName instead of the interface javax.naming.Name
(which does extend java.io.Serializable, incidentally), it works fine!It appears that marshaling an interface (or abstract class) fails, but marshaling a concrete class succeeds.
>
>
I tried this with my own interfaces and concrete classes, and I get the
same strange behavior: calling methods with interface argument types on
the ejb via rmi-iiop fails with the above cryptic error, but methods
with concrete argument types work fine.
I also tried this out on a non-ejb rmi-iiop server object using jdk 1.3
but not weblogic. In that case both interfaces and concrete method
argument types work just fine.
Now I'm wondering if this could be a bug in weblogic.ejbc's iiop
generation. Can anyone else verify this problem?I'll look into this.
>
>
Edwin Park
[email protected] -
RMI-IIOP Example for Java SE 6
Hi.
Can someone provide me an example (link or code) of how to write an RMI-IIOP remote object, bind it to jndi (glassfish) and then call it from within the glassfish application server (I'm calling from an EJB).
The guide available at http://java.sun.com/javase/6/docs/technotes/guides/rmi-iiop/tutorial.html is unfortunately not helpful because it the code there does not work when binding the remote object in glassfish JNDI (using empty InitialContext constructor) as opposed to the orbd daemon that is described in the guide.
Am I not allowed to bind RMI-IIOP objects in glassfish application server JNDI, i.e. do I have to use orbd?
Do you have to generate stubs for the remote objects in Java SE6? The tutorial says to do it but the exception I get on glassfish application server is not from the _<interface-name>Stub.java but rather from <interface-name>_DynamicStub.java.
Any help is greatly appreciated!Are you trying to create an RMI-IIOP server inside an
Application Server (Glassfish)?I'm not really sure about how it all works but I don't think so. I am exporting my Remote objects (using PortableRemoteObject) from a standalone Java SE client app. Relating this to normal RMI I had assumed that this automatically started an RMI-IIOP server on an anonomous port, although I now see that the javadoc says that the export method only "Makes a server object ready to receive remote calls.", whatever that means. So if calling the export method doesn't start an RMI-IIOP server then I'm guessing I would have to start one, and then yes, if possible, I would like to do it in glassfish and avoid starting up more applications.
I am guessing I am missing something fundamental here..
The tutorial uses the JNDI Registry (tnameserv). (and
it works fine)Is that what is automatically started when glassfish application server is started?
Have you looked into using a Portable Object Adapter?No, I have not. I want to keep it as simple and close to regular RMI though, so if possible I would like to avoid POA. -
How to get InitialContextFactory using RMI/IIOP without using weblogic.jar
Hi Robert
I know this is an old post. but I am interested in knowing how to get the
initial context using RMI/IIOP without the use weblogic specific classes
like weblogic.jndi.WLInitialContextFactory . If you have a code snippet that
you can provide as an example, it would be just great.
thanx in advance
Daya Sharma
See comments inline...
Stewart Wachs wrote:
I would like to get an initial context to Weblogic JNDI from a client.
code snippet:
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFacorty");
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
try {
Context ctx = new InitialContext(ht);
catch(...) {
This works fine when I include weblogic.jar (and other dependend weblogic
jar's) in the classpath.
Is there a way to access WL JNDI from a client without the weblogicclasses
in the classpath?If you are using WLS 6.1, you could use RMI/IIOP to do this but in general,
the
answer is no, you will need at least some of the weblogic classes on the
client.
If not, is there a lightweight jar available for distribution for client
JNDI connectivity?This is something in the works. In addition, a colleague and I are working
on
a white paper that describes the "Thin Client Options with WebLogic Server"
that we hope to make available in the not too distant future...
Are there any licencing issues with distributing the weblogic classes to
clients that need to access WL JNDI?No. WLS is licensed by the server so you are free to distribute
weblogic.jar
to your clients.
Hope this helps,
RobertTake a look at the RMI/IIOP section of our whitepaper "Small Footprint
Client options for BEA WebLogic Server" at:
http://dev2dev.bea.com/resourcelibrary/whitepapers.jsp?highlight=whitepapers
Daya Sharma wrote:
Hi Robert
I know this is an old post. but I am interested in knowing how to get the
initial context using RMI/IIOP without the use weblogic specific classes
like weblogic.jndi.WLInitialContextFactory . If you have a code snippet that
you can provide as an example, it would be just great.
thanx in advance
Daya Sharma
See comments inline...
Stewart Wachs wrote:
I would like to get an initial context to Weblogic JNDI from a client.
code snippet:
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFacorty");
ht.put(Context.PROVIDER_URL, "t3://localhost:7001");
try {
Context ctx = new InitialContext(ht);
catch(...) {
This works fine when I include weblogic.jar (and other dependend weblogic
jar's) in the classpath.
Is there a way to access WL JNDI from a client without the weblogic
classes
in the classpath?
If you are using WLS 6.1, you could use RMI/IIOP to do this but in general,
the
answer is no, you will need at least some of the weblogic classes on the
client.
If not, is there a lightweight jar available for distribution for client
JNDI connectivity?
This is something in the works. In addition, a colleague and I are working
on
a white paper that describes the "Thin Client Options with WebLogic Server"
that we hope to make available in the not too distant future...
Are there any licencing issues with distributing the weblogic classes to
clients that need to access WL JNDI?
No. WLS is licensed by the server so you are free to distribute
weblogic.jar
to your clients.
Hope this helps,
Robert -
How write rmi-iiop over ssl with weblogic server 6.1 - No server found
//New
Hello,
I have written an appication like this:
- An EJB server running on Weblogic server 6.1
(named: BankServerHome)
-A java client calling the BankServer.
Platform: windows 2000 - jdk1.3
Now I want to secure the communication with SSL protocol.
I have done this:
-generate a key peer with weblogic service named certificate.
-send the CSR to a CA and place the answer into the weblogic
server certificate directory.
-update path for ServerCertificateChainFileName,
ServerCertificateFileName, ServerKeyFileName into config.xml.
-launch weblogicServer
-> server certificate is recognized
-> listening port 7001 and 7002.
(-stop weblogicServer!)
At now, all is all right, errors come hereafter:
Then I follow the guideline "Programming weblogic Security" (version of 30/07/2001).
"To use RMI over IIOP over SSL with a Java client, do the following:
2. Extend the java.rmi.server.RMISocketFactory class to handle SSL socket
connections. Be sure to specify the port on which WebLogic Server listens for
SSL connections. For an example of a class that extends the
java.rmi.server.RMISocketFactory class, see Listing 4-22.
3. Run the ejbc compiler with the -d option.
4. Add your extension of the java.rmi.server.RMISocketFactory class to the
CLASSPATH of the Java client.
5. Use the following command options when starting the Java client:
-xbootclasspath/a:%CLASSPATH%
-Dorg.omg.CORBA.ORBSocketFactoryClass=implementation of java.rmi.server.RMISocketFactory
-Dssl.certs=directory location of digital certificate for Java client
-Dssl.key=directory location of private key for Java client"
At step 3. I found into documentation that -d is linked to a directory name.
When I run ejbc with this option -d I have the message:
"ERROR: You must specify an output directory or jar with the -d option to weblogic.ejbc."
% So what option can I use to run ejbc for secure usage?
At step 5. Whatever I write for -Dorg.omg.CORBA.ORBSocketFactoryClass,
this pointed class is not instanciated.
Then I can not create a socket with my client.
The folowing exception is raised:
javax.naming.CommunicationException [Root exception is java.net.ConnectException:
No server found at T3S://localhost:7002]
So, my questions are:
% Why -Dorg.omg.CORBA.ORBSocketFactoryClass must be known by the client and not
the server?
My java client part, managing connection is:
-------------------BEGIN OF CONNECTION MANAGER-------------------
Properties env = new Properties ();
// Shouldn't have to do this, but for now you must
if ( factory.equals ("weblogic.jndi.WLInitialContextFactory") ) {
env.put ("java.naming.provider.url", "t3s://localhost:7002");
InitialContext context = new InitialContext (env);
BankSessionServerHome bssh = (BankServerHome) context.lookup("BankServerHome");
BankServer = bssh.create();
-------------------END OF CONNECTION MANAGER-------------------
I have also try
env.put ("java.naming.provider.url", "corbaloc:iiop://localhost:7002");
but it throws the following error
javax.naming.InvalidNameException: url does not conatin !!!
% What is the code for the java client allowing connection with the ejb?
% And better, can I have a sample example for rmi-iiop over ssl?
(...wlserver6.1\samples\examples\iiop\ejb\stateless\rmiclient\client.java do not
speak ssl!)
Any help will be appreciate from you...
Best Regards.
Oliver"oliver" <[email protected]> writes:
The SSL support is poorly doc'd right now. We have fixed this and
updated the way you do things in SP2. Please either wait for SP2 or
contact support.
andy
I have written an appication like this:
- An EJB server running on Weblogic server 6.1
(named: BankServerHome)
-A java client calling the BankServer.
Platform: windows 2000 - jdk1.3
Now I want to secure the communication with SSL protocol.
I have done this:
-generate a key peer with weblogic service named certificate.
-send the CSR to a CA and place the answer into the weblogic
server certificate directory.
-update path for ServerCertificateChainFileName,
ServerCertificateFileName, ServerKeyFileName into config.xml.
-launch weblogicServer
-> server certificate is recognized
-> listening port 7001 and 7002.
(-stop weblogicServer!)
At now, all is all right, errors come hereafter:
Then I follow the guideline "Programming weblogic Security" (version of 30/07/2001).
"To use RMI over IIOP over SSL with a Java client, do the following:
2. Extend the java.rmi.server.RMISocketFactory class to handle SSL socket
connections. Be sure to specify the port on which WebLogic Server listens for
SSL connections. For an example of a class that extends the
java.rmi.server.RMISocketFactory class, see Listing 4-22.
3. Run the ejbc compiler with the -d option.
4. Add your extension of the java.rmi.server.RMISocketFactory class to the
CLASSPATH of the Java client.
5. Use the following command options when starting the Java client:
-xbootclasspath/a:%CLASSPATH%
-Dorg.omg.CORBA.ORBSocketFactoryClass=implementation of java.rmi.server.RMISocketFactory
-Dssl.certs=directory location of digital certificate for Java client
-Dssl.key=directory location of private key for Java client"
At step 3. I found into documentation that -d is linked to a directory name.
When I run ejbc with this option -d I have the message:
"ERROR: You must specify an output directory or jar with the -d option to weblogic.ejbc."
% So what option can I use to run ejbc for secure usage?
At step 5. Whatever I write for -Dorg.omg.CORBA.ORBSocketFactoryClass,
this pointed class is not instanciated.
Then I can not create a socket with my client.
The folowing exception is raised:
javax.naming.CommunicationException [Root exception is java.net.ConnectException:
No server found at T3S://localhost:7002]
So, my questions are:
% Why -Dorg.omg.CORBA.ORBSocketFactoryClass must be known by the client and not
the server?
My java client part, managing connection is:
-------------------BEGIN OF CONNECTION MANAGER-------------------
Properties env = new Properties ();
// Shouldn't have to do this, but for now you must
if ( factory.equals ("weblogic.jndi.WLInitialContextFactory") ) {
env.put ("java.naming.provider.url", "t3s://localhost:7002");
InitialContext context = new InitialContext (env);
BankSessionServerHome bssh = (BankServerHome) context.lookup("BankServerHome");
BankServer = bssh.create();
-------------------END OF CONNECTION MANAGER-------------------
I have also try
env.put ("java.naming.provider.url", "corbaloc:iiop://localhost:7002");
but it throws the following error
javax.naming.InvalidNameException: url does not conatin !!!
% What is the code for the java client allowing connection with the ejb?
% And better, can I have a sample example for rmi-iiop over ssl?
(...wlserver6.1\samples\examples\iiop\ejb\stateless\rmiclient\client.java do not
speak ssl!)
Any help will be appreciate from you...
Best Regards.
Oliver -
How write rmi-iiop over ssl with weblogic server 6.1?
Hello,
I have written an appication like this:
- An EJB server running on Weblogic server 6.1
(named: BankServerHome)
-A java client calling the BankServer.
Platform: windows 2000 - jdk1.4
Now I want to secure the communication with SSL protocol.
I have done this:
-generate a key peer with weblogic service named certificate.
-send the CSR to a CA and place the answer into the weblogic
server certificate directory.
-update path for ServerCertificateChainFileName,
ServerCertificateFileName, ServerKeyFileName into config.xml.
-launch weblogicServer
-> server certificate is recognized
-> listening port 7001 and 7002.
(-stop weblogicServer!)
At now, all is all right, errors come hereafter:
Then I follow the guideline "Programming weblogic Security" (version of 30/07/2001).
"To use RMI over IIOP over SSL with a Java client, do the following:
2. Extend the java.rmi.server.RMISocketFactory class to handle SSL socket
connections. Be sure to specify the port on which WebLogic Server listens for
SSL connections. For an example of a class that extends the
java.rmi.server.RMISocketFactory class, see Listing 4-22.
3. Run the ejbc compiler with the -d option.
4. Add your extension of the java.rmi.server.RMISocketFactory class to the
CLASSPATH of the Java client.
5. Use the following command options when starting the Java client:
-xbootclasspath/a:%CLASSPATH%
-Dorg.omg.CORBA.ORBSocketFactoryClass=implementation of java.rmi.server.RMISocketFactory
-Dssl.certs=directory location of digital certificate for Java client
-Dssl.key=directory location of private key for Java client"
At step 3. I found into documentation that -d is linked to a directory name.
When I run ejbc with this option -d I have the message:
"ERROR: You must specify an output directory or jar with the -d option to weblogic.ejbc."
% So what option can I use to run ejbc for secure usage?
At step 5. Whatever I write for -Dorg.omg.CORBA.ORBSocketFactoryClass,
this pointed class is not instanciated.
Then I can not create a socket with my client.
The folowing exception is raised:
javax.naming.CommunicationException [Root exception is java.net.ConnectException:
No server found at T3S://localhost:7002]
So, my questions are:
% Why -Dorg.omg.CORBA.ORBSocketFactoryClass must be known by the client and not
the server?
My java client part, managing connection is:
-------------------BEGIN OF CONNECTION MANAGER-------------------
Properties env = new Properties ();
// Shouldn't have to do this, but for now you must
if ( factory.equals ("weblogic.jndi.WLInitialContextFactory") ) {
env.put ("java.naming.provider.url", "t3s://localhost:7002");
} else {
env.put ("java.naming.provider.url", "rmi://localhost:7002");
InitialContext context = new InitialContext (env);
BankSessionServerHome bssh = (BankServerHome) context.lookup("BankServerHome");
BankServer = bssh.create();
-------------------END OF CONNECTION MANAGER-------------------
% What is the code for the java client allowing connection with the ejb?
% And better, can I have a sample example for rmi-iiop over ssl?
(...wlserver6.1\samples\examples\iiop\ejb\stateless\rmiclient\client.java do not
speak ssl!)
Any help will be appreciate from you...
Best Regards.
Oliver"oliver" <[email protected]> writes:
First off 1.4 isn't supported as yet. That is probably part of the problem.
You also must use a corba URL from the client in order for this to work for instance:
If you are using WLInitialContextFactory:
corbaloc:iiop:localhost:7001/NameService
If you are using CNCtxFactory:
iiop://localhost:7001
Using rmi: is the wrong thing to do - that will use jrmp or t3.
However, I suggest that you raise a call with support since there is
some other trickiness with getting SSL working. We hope to have this
much improved in SP2.
andy
Hello,
I have written an appication like this:
- An EJB server running on Weblogic server 6.1
(named: BankServerHome)
-A java client calling the BankServer.
Platform: windows 2000 - jdk1.4
Now I want to secure the communication with SSL protocol.
I have done this:
-generate a key peer with weblogic service named certificate.
-send the CSR to a CA and place the answer into the weblogic
server certificate directory.
-update path for ServerCertificateChainFileName,
ServerCertificateFileName, ServerKeyFileName into config.xml.
-launch weblogicServer
-> server certificate is recognized
-> listening port 7001 and 7002.
(-stop weblogicServer!)
At now, all is all right, errors come hereafter:
Then I follow the guideline "Programming weblogic Security" (version of 30/07/2001).
"To use RMI over IIOP over SSL with a Java client, do the following:
2. Extend the java.rmi.server.RMISocketFactory class to handle SSL socket
connections. Be sure to specify the port on which WebLogic Server listens for
SSL connections. For an example of a class that extends the
java.rmi.server.RMISocketFactory class, see Listing 4-22.
3. Run the ejbc compiler with the -d option.
4. Add your extension of the java.rmi.server.RMISocketFactory class to the
CLASSPATH of the Java client.
5. Use the following command options when starting the Java client:
-xbootclasspath/a:%CLASSPATH%
-Dorg.omg.CORBA.ORBSocketFactoryClass=implementation of java.rmi.server.RMISocketFactory
-Dssl.certs=directory location of digital certificate for Java client
-Dssl.key=directory location of private key for Java client"
At step 3. I found into documentation that -d is linked to a directory name.
When I run ejbc with this option -d I have the message:
"ERROR: You must specify an output directory or jar with the -d option to weblogic.ejbc."
% So what option can I use to run ejbc for secure usage?
At step 5. Whatever I write for -Dorg.omg.CORBA.ORBSocketFactoryClass,
this pointed class is not instanciated.
Then I can not create a socket with my client.
The folowing exception is raised:
javax.naming.CommunicationException [Root exception is java.net.ConnectException:
No server found at T3S://localhost:7002]
So, my questions are:
% Why -Dorg.omg.CORBA.ORBSocketFactoryClass must be known by the client and not
the server?
My java client part, managing connection is:
-------------------BEGIN OF CONNECTION MANAGER-------------------
Properties env = new Properties ();
// Shouldn't have to do this, but for now you must
if ( factory.equals ("weblogic.jndi.WLInitialContextFactory") ) {
env.put ("java.naming.provider.url", "t3s://localhost:7002");
} else {
env.put ("java.naming.provider.url", "rmi://localhost:7002");
InitialContext context = new InitialContext (env);
BankSessionServerHome bssh = (BankServerHome) context.lookup("BankServerHome");
BankServer = bssh.create();
-------------------END OF CONNECTION MANAGER-------------------
% What is the code for the java client allowing connection with the ejb?
% And better, can I have a sample example for rmi-iiop over ssl?
(...wlserver6.1\samples\examples\iiop\ejb\stateless\rmiclient\client.java do not
speak ssl!)
Any help will be appreciate from you...
Best Regards.
Oliver -
Hi all,
this is my client code which access EJB 2.1 and SUN JES AS 8.1 using RMI IIOP
i get the remote home interface well but when i use home.create(), it retruns null.
can anyone help me???
Here is the coding,
Properties props = new Properties();
//props.put("javax.rmi.CORBA.UtilClass",
// "com.sun.corba.ee.impl.javax.rmi.CORBA.Util");
props.put("org.omg.CORBA.ORBClass","com.ooc.OBServer.ORB");
props.put("org.omg.CORBA.ORBSingletonClass","com.ooc.CORBA.ORBSingleton");
props.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.cosnaming.CNCtxFactory");
props.put(Context.PROVIDER_URL, "iiop://10.24.17.68:3360"); // the port of the application server
props.put("ooc.orb.service.NameService",
"corbaloc:iiop:10.24.17.68:3360/NameService");
String[] args = null;
ORB orb = ORB.init(args, props);
Context ctx;
Object obj;
try {
ctx = new InitialContext(props);
System.out.println("RMI: 1");
obj = ctx.lookup("ejb/NewSessionBean");
System.out.println("RMI: 2");
System.out.println("object name: "+obj.getClass().getName());
System.out.println("object class loader: "+obj.getClass().getClassLoader());
NewSessionRemoteHome home = (NewSessionRemoteHome) PortableRemoteObject.
narrow(obj, NewSessionRemoteHome.class);
System.out.println("Interface name: "+home.getClass().getName());
System.out.println("RMI: 3: " + home.toString());
if (home == null){
System.out.println("home is null");
NewSessionRemote remo = (NewSessionRemote)home.create();
System.out.println("RMI: 4");
remo.printText("Welcome to RMI world"); //the message send by the client
System.out.println("The sending of RMI is succeed");
} catch (Exception ex) {
System.out.println("exception starts:");
ex.printStackTrace();
System.out.println("Exception occurs. Exception: " + ex.getMessage());
Here is the traces,
RMI: 1
RMI: 2
object name: com.ooc.CORBA.StubForObject
object class loader: null
Interface name: fr.teleca.orangebenchosa.cdrstat._NewSessionRemoteHome_Stub
RMI: 3: IOR:000000000000004b524d493a66722e74656c6563612e6f72616e676562656e63686f73612e6 36472737461742e4e657753657373696f6e52656d6f7465486f6d653a30303030303030303030303 0303030300000000000010000000000000188000102000000000c31302e32342e31372e3638000d2 0000000000056afabcb00000000260000003f00000009533141532d4f52420000000000000002000 00008526f6f74504f41000000001237353732393838353136303237353936380000000000000d010 d0bede7dc000000000001ff140000000000070000000100000020000000000001000100000002050 10001000100200001010900000001000101000000002600000002000200000000000300000016000 000000000000c31302e32342e31372e3638000d1600000000000300000016000000000000000c313 02e32342e31372e3638000d1300000000001f0000000400000003000000200000000400000001000 000210000007c000000000000000100000000000000240000001e000000660000000000000001000 0000c31302e32342e31372e3638000d1600400000000000000008060667810201010100000017040 1000806066781020101010000000764656661756c740004000000000000000000000100000008060 66781020101010000000f
exception starts:
java.lang.ClassCastException
at com.sun.corba.se.internal.iiop.ShutdownUtilDelegate.isLocal(Unknown Source)
at javax.rmi.CORBA.Util.isLocal(Unknown Source)
at fr.teleca.orangebenchosa.cdrstat._NewSessionRemoteHome_Stub.create(Unknown Source)
at fr.teleca.orangebenchosa.servicelogic.CallHandler$EndState.sendCDRStat(CallHand ler.java:1385)
at fr.teleca.orangebenchosa.servicelogic.CallHandler$EndState.start(CallHandler.ja va:1047)
at com.appium.TAS.SessionContainer.StatefulObject.enterState(StatefulObject.java)
at fr.teleca.orangebenchosa.servicelogic.CallHandler.access$4800(CallHandler.java: 61)
at fr.teleca.orangebenchosa.servicelogic.CallHandler$SuccessfulLogicState.routeRes (CallHandler.java:902)
at com.appium.TAS.SessionComponents.CallControl.a.exec(a.java)
at com.appium.Basement.Synchronization.Asynchronizer.d(Asynchronizer.java)
at com.appium.Basement.Synchronization.g.run(g.java)
Exception occurs. Exception: nullHi ejp,
because my stand alone client application runs on telecom server which uses orbacus. It calls the remote method on sun AS using RMI IIOP
I specifed the properties of the client to use SUN AS naming services.
I added j2ee.jar and appserv-rt.jar in my client program. but i dont know eventhough i specified the Util properties to use as below
props.put("javax.rmi.CORBA.UtilClass","com.sun.corba.ee.impl.javax.rmi.CORBA.Util");
props.put("org.omg.CORBA.ORBClass", "com.sun.corba.ee.impl.orb.ORBImpl");
props.put("org.omg.CORBA.ORBSingletonClass", "com.sun.corba.ee.impl.orb.ORBSingleton");
props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
props.put(Context.PROVIDER_URL,"iiop://10.24.17.68:3360"); // the port of the application server
props.put("ooc.orb.service.NameService", "corbaloc:iiop:10.24.17.68:3360/NameService");
ORB orb = ORB.init(args,props);
Context ctx;
Object obj;
try {
ctx = new InitialContext(props);
obj= ctx.lookup("ejb/NewSessionBean");
NamingEnumeration ne = ctx.listBindings("ejb");
while (ne.hasMore()) {
System.out.println("Binding: " + ne.next());
System.out.println("object name"+obj.getClass().getName());
System.out.println("object class loader"+obj.getClass().getClassLoader());
NewSessionRemoteHome home=(NewSessionRemoteHome)PortableRemoteObject.narrow(obj,NewSessionRemoteHome.class);
System.out.println("Interface name: "+home.getClass().getName());
NewSessionRemote remo=home.create();
System.out.println("Remote name: "+remo.getClass().getName());
remo.printText("Welcome"); //the message send by the client
} catch (Exception ex) {
ex.printStackTrace();
but it uses J2SE Util. Is there any other workaround to do?
Thanks
mdb -
Gods:How can i implement callback in RMI-IIOP?
Gods:
In RMI-IIOP ,it is a Server-Client pattern.
I wanna implement a Client1-Server-Client2 pattern .
What can I do ?
Can u give me code examples? thanks .Previous answer is incorrect & indeed quiteincoherent.
How very polite.
What ejp neglects to understand is that the client is
not Java and cannot create a Java object.As the OP said nothing about non-Java clients, and neither did anybody else until now, I didn't 'neglect to understand' anything, I merely didn't address the issue. You introduced an assumption about 'a non-rmi client (hence the need to use iiop)', which is incoherent, and you're now conflating 'non-RMI' with 'non-Java', which is also incoherent. I don't accept that saying so is impolite.
On the topic, all that any CORBA client has to do to provide a callback is to construct a CORBA server, in whatever way is appropriate for the environment, and pass it as a parameter. The RMI-IIOP restriction that the IDL interfaces must first be defined in Java still applies of course.
EJP -
Hi -
I'm working to modify a C program (gnuplot) so that it can remotely call functions in Java.
My current plan is to use RMI-IIOP on the Java side. I'd like to create a class that implements java.rmi.Remote via some local implementation class, instantiate it, then obtain a stringified IOR for that object and pass it to gnuplot, which can then use the IOR to call remote methods.
Also, I'm planning to use CORBA DII on the client side, since I want a generic program where the remote method names can be set by user options at run time.
Does this make sense? I'm working with this tutorial code:
http://java.sun.com/j2se/1.5.0/docs/guide/rmi-iiop/tutorial.html
and am stuck on obtaining an IOR in the server code.
Any help would be appreciated...Well, I figured it out. The key method is remoteToCorba in com.sun.jndi.toolkit.corba.CorbaUtils. Here's my server code:
//HelloServer.java
import java.io.*;
import org.omg.CORBA.ORB;
import com.sun.jndi.toolkit.corba.CorbaUtils;
public class HelloServer {
public static void main(String[] args) {
try {
// Step 1: Instantiate the Hello servant
HelloImpl helloRef = new HelloImpl();
// Step 2: Initialize the ORB
ORB orb = ORB.init(args, null);
// Step 3: Convert the Hello servant to a CORBA object
org.omg.CORBA.Object corba_obj;
corba_obj = CorbaUtils.remoteToCorba(helloRef, orb);
// Step 4a: Announce the IOR to STDOUT
String ior = orb.object_to_string(corba_obj);
System.out.println("IOR: " + ior);
// Step 4b: Announce the IOR to a file
FileWriter fw = new FileWriter("hello.ior");
fw.write(ior);
fw.close();
System.out.println("Hello Server: Ready...");
} catch (Exception e) {
System.out.println("Trouble: " + e);
e.printStackTrace();
}And here's the matching client code:
//HelloClient.java
import java.io.*;
import org.omg.CORBA.ORB;
import javax.rmi.PortableRemoteObject;
public class HelloClient {
public static void main( String args[] ) {
HelloInterface hi;
try {
// Step 1: Initialize the ORB
ORB orb = ORB.init(args, null);
// Step 2: Obtain the stringified IOR from a file
FileReader fr = new FileReader("hello.ior");
BufferedReader br = new BufferedReader(fr);
String ior = br.readLine();
// Step 3: Convert the IOR to a CORBA object reference
org.omg.CORBA.Object objref = orb.string_to_object(ior);
// Step 4: Narrow the CORBA object reference to the concrete type
hi = (HelloInterface) PortableRemoteObject.narrow(
objref, HelloInterface.class);
// Step 5: Invoke the method.
hi.sayHello( " MARS " );
} catch( Exception e ) {
System.err.println( "Exception " + e + "Caught" );
e.printStackTrace( );
return;
}The other two files are unchanged from the original example:
//HelloInterface.java
import java.rmi.Remote;
public interface HelloInterface extends java.rmi.Remote {
public void sayHello( String from ) throws java.rmi.RemoteException;
//HelloImpl.java
import javax.rmi.PortableRemoteObject;
public class HelloImpl extends PortableRemoteObject implements HelloInterface {
public HelloImpl() throws java.rmi.RemoteException {
super(); // invoke rmi linking and remote object initialization
public void sayHello( String from ) throws java.rmi.RemoteException {
System.out.println( "Hello from " + from + "!!" );
System.out.flush();
}Compilation and usage is straightforward:
javac *.java
rmic -iiop HelloImpl
java -cp . HelloServer
java -cp . HelloClientIt gives warnings about using a Sun proprietary interface, but that's the only problem that I've had with the Java end. Getting the C end working has been more challenging. ORBit seems to have some serious interoperability problems. I haven't gotten it working yet with Java. -
RMI-IIOP and glassfish naming service
I have some very basic test applications to test RMI-IIOP. The applications are one server (registers the Remote object) and one client (tries to retreive the remote object stub and invoke a simple hello() method).
I've been trying to get it to work by registering the Remote object (see below) in glassfish naming service (JNDI) but I get the following an error saying: "Class rmi.ListenerRemoteImpl not exported, or else is actually a JRMP stub". I haven't been able to figure out why...
Then I found another guide which I followed and managed to get to work. The only difference there was that I used orbd as naming service.
Why is this? Doesn't Glassfish JNDI support RMI-IIOP in this way?
Any help is greatly appreciated!
I followed the following steps in creating the application:
-Created the following classes:
Client.java //The client
Server.java //The server
ListenerRemote.java //Remote interface implementing Remote
ListenerRemoteImpl.java //Implemtation extends PortableRemoteObject and implements ListenerRemote
-Generated stubs with rmic using -iiop
-Compile and run...Here is some of the code...
Client that fails with glassfish but not with orbd:
=========================================
public static void main(String[] args) throws Exception {
ListenerRemoteImpl listener = new ListenerRemoteImpl();
Properties props = new Properties();
props.load(new FileInputStream("jndi.properties"));
//Uncommenting this and starting orbd makes it work. When default jndi.properties from Glassfish is used, it does not work.
//props.put("java.naming.factory.initial", "com.sun.jndi.cosnaming.CNCtxFactory");
//props.put("java.naming.provider.url", "iiop://localhost:1060");
Context ctx = new InitialContext(props);
ctx.rebind("listener", listener);
System.out.println("Listener bound!");
==================================
ListenerRemoteImpl:
==================================
public class ListenerRemoteImpl extends PortableRemoteObject implements ListenerRemote {
public ListenerRemoteImpl() throws RemoteException {
super();
public void sayHello() throws RemoteException {
System.out.println("Hello!");
==================================
The stacktrace when glassfish naming service is used:
==================================
2007-aug-10 17:24:32 com.sun.corba.ee.impl.util.Utility autoConnect
VARNING: "IOP00511403: (INV_OBJREF) Class rmi.ListenerRemoteImpl not exported, or else is actually a JRMP stub"
org.omg.CORBA.INV_OBJREF: vmcid: SUN minor code: 1403 completed: No
at com.sun.corba.ee.impl.logging.UtilSystemException.objectNotExported(UtilSystemException.java:569)
at com.sun.corba.ee.impl.logging.UtilSystemException.objectNotExported(UtilSystemException.java:592)
at com.sun.corba.ee.impl.util.Utility.autoConnect(Utility.java:147)
at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:323)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:256)
at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeArguments(DynamicMethodMarshallerImpl.java:407)
at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:157)
at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:119)
at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:197)
at com.sun.enterprise.naming._SerialContextProvider_DynamicStub.rebind(_SerialContextProvider_DynamicStub.java)
at com.sun.enterprise.naming.SerialContext.rebind(SerialContext.java:403)
at javax.naming.InitialContext.rebind(InitialContext.java:408)
at rmi.Client.main(Client.java:48)
Exception in thread "main" javax.naming.CommunicationException: java.rmi.NoSuchObjectException: CORBA INV_OBJREF 1398080891 No; nested exception is:
org.omg.CORBA.INV_OBJREF: vmcid: SUN minor code: 1403 completed: No
at com.sun.enterprise.naming.SerialContext.rebind(SerialContext.java:405)
at javax.naming.InitialContext.rebind(InitialContext.java:408)
at rmi.Client.main(Client.java:48)
================================== -
Is there any sample RMI-IIOP application using distributed transactions
Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across RMI-IIOP
clients and RMI-IIOP applications (servers).
I am surprised by the note:
Note: These code fragments do not derive from any of the sample applications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there any sample code that illustrates RMI-IIOP applications (servers)
participating in distributed transactions?
Regards,
Dan CimpoesuTransaction examples for IIOP are in the works for the next release.
"Dan Cimpoesu" <[email protected]> wrote:
Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across RMI-IIOP
clients and RMI-IIOP applications (servers).
I am surprised by the note:
Note: These code fragments do not derive from any of the sample applications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there any sample code that illustrates RMI-IIOP applications (servers)
participating in distributed transactions?
Regards,
Dan Cimpoesu
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