throughput demo (java client) failing to connect to throughput demo (C++ server)

caos1234

That' about it. I am able to use the throughput demo in the following combinations (on the same machine, no config files were changed):
Java Server - Java Client
C++ Server - C++ Client
Java Server - C++ Client

but when i load the C++ server and execute the Java client (java Client)
the following error appear

Client: Ice.ConnectionRefusedException
    error = 0
Ice.ConnectionRefusedException
    error = 0
        at IceInternal.Network.doConnect(Network.java:284)
        at IceInternal.TcpConnector.connect(TcpConnector.java:25)
        at IceInternal.OutgoingConnectionFactory.create(OutgoingConnectionFactory.java:308)
        at IceInternal.RoutableReference.createConnection(RoutableReference.java:379)
        at IceInternal.DirectReference.getConnection(DirectReference.java:192)
        at Ice._ObjectDelM.setup(_ObjectDelM.java:258)
        at Ice.ObjectPrxHelperBase.__getDelegate(ObjectPrxHelperBase.java:905)
        at Ice.ObjectPrxHelperBase.ice_isA(ObjectPrxHelperBase.java:73)
        at Ice.ObjectPrxHelperBase.ice_isA(ObjectPrxHelperBase.java:61)
        at Demo.ThroughputPrxHelper.checkedCast(ThroughputPrxHelper.java:418)
        at Client.run(Client.java:51)
        at Ice.Application.main(Application.java:114)
        at Ice.Application.main(Application.java:57)
        at Client.main(Client.java:412)
Caused by: java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:521)
        at IceInternal.Network.doConnect(Network.java:259)
        ... 13 more

Which is the same error i get if i don't execute the server at all. I don't know what is needed to allow this object to work that way, (i guessed it was the same object, and the thing that's failing is the connection.
Maybe the config files are the problem. I haven't changed anything in those files. Any idea of what could it be?

btw: Ice 3.1.1 (both java and C) under ubuntu

beagles

The Throughput proxy in the Ice for Java demo's config.client file is missing the host specification. Change it to:

Throughput.Throughput=throughput:default -h 127.0.0.1 -p 10000

and it should work okay for you.

Cheers,

Brent

caos1234

It worked but...

Thanks mr. beagles, that worked fine. But now, i found myself with another problem.
When i moved my tests to different hosts
i can't get the c++ server to work
i could get the following combinations right:
Java Server - Java Client
Java Server - C++ Client

but when i run the C++ server (in CAOS_NOTEBOOK machine)
and use the c++ client in another machine with the following config.client

Throughput.Throughput=throughput:tcp -h CAOS_NOTEBOOK -p 10000

#
# SSL Configuration
#
Ice.Plugin.IceSSL=IceSSL:createIceSSL
IceSSL.DefaultDir=../../../certs
IceSSL.CertAuthFile=cacert.pem
IceSSL.CertFile=c_rsa1024_pub.pem
IceSSL.KeyFile=c_rsa1024_priv.pem

#
# Disable ACM
#
Ice.ACM.Client=0

I get the following message

./client: Network.cpp:669: Ice::ConnectionRefusedException:
connection refused: Connection refused

And when i use the java client with the following config.client

Throughput.Throughput=throughput:tcp -h CAOS_NOTEBOOK -p 10000
Throughput.Endpoints=tcp -h CAOS_NOTEBOOK -p 10000

Ice.ACM.Client=0
Ice.ACM.Server=0

I get the following error

[ Network: trying to establish tcp connection to 192.168.1.101:10000 ]
[ Network: trying to establish tcp connection to 192.168.1.101:10000 ]
Client: Ice.ConnectionRefusedException
    error = 0
Ice.ConnectionRefusedException
    error = 0
        at IceInternal.Network.doConnect(Network.java:284)
        at IceInternal.TcpConnector.connect(TcpConnector.java:25)
        at IceInternal.OutgoingConnectionFactory.create(OutgoingConnectionFactory.java:308)
        at IceInternal.RoutableReference.createConnection(RoutableReference.java:379)
        at IceInternal.DirectReference.getConnection(DirectReference.java:192)
        at Ice._ObjectDelM.setup(_ObjectDelM.java:258)
        at Ice.ObjectPrxHelperBase.__getDelegate(ObjectPrxHelperBase.java:905)
        at Ice.ObjectPrxHelperBase.ice_isA(ObjectPrxHelperBase.java:73)
        at Ice.ObjectPrxHelperBase.ice_isA(ObjectPrxHelperBase.java:61)
        at Demo.ThroughputPrxHelper.checkedCast(ThroughputPrxHelper.java:418)
        at Client.run(Client.java:51)
        at Ice.Application.main(Application.java:114)
        at Ice.Application.main(Application.java:57)
        at Client.main(Client.java:412)
Caused by: java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:521)
        at IceInternal.Network.doConnect(Network.java:259)

what could it be?
I ping CAOS_NOTEBOOK without problems, and it worked in the previously mentioned combinations, so it can't be a port blocking problem.

Thanks again, and sorry for so many newbie questions.

michi

If you get a ConnectionRefusedException, that means that no process is listening at the port the client connects to. Your trace shows that the client tries to connect to 192.168.1.101:10000. Are you certain that your server is actually running on that host and port?

What happens if you start the server and then do:

telnet 192.168.1.101 10000

You should be able to connect with telnet. If not, the server is defintely not running where the client things its running.

You can run the server with --Ice.Trace.Network=2 to see what endpoints the server listens at.

Cheers,

Michi.