specifying proxy's locator

n2503v

I have two indirect proxies and I want them to use two different locators. According to sec. 30.16.3 this can be done in 3 ways. I try 2 of them: by calling prx->ice_locator() and by calling comm->setDefaultLocator(). Both seem to have no effect: the proxies always get resolved through the original default locator.

Short sample code is below with debugging lines removed. BTW, I use ice_ping() and ice_connection() to see which objects the proxies resolve. for example:
obj->ice_ping();
cout<<obj->ice_connection()->toString()<<endl;


int App::run( int argc, char* argv[] )
{
// first locator
Ice::ObjectPrx olocA = communicator()->stringToProxy( "IceGrid/Locator: default -h remotehost -p 12000" );
Ice::LocatorPrx locA = Ice::LocatorPrx::checkedCast( olocA );
communicator()->setDefaultLocator( locA );

// create a proxy, it uses default locator (WORKS FINE)
Ice::ObjectPrx oadminA = communicator()->stringToProxy("IceGrid/Admin");

// define new locator
Ice::ObjectPrx olocB = communicator()->stringToProxy( "IceGrid/Locator:tcp -h localhost -p 12005" );
Ice::LocatorPrx locB = Ice::LocatorPrx::checkedCast( olocB );

// another proxy, change locator directly (DOES NOT WORK)
Ice::ObjectPrx oadminB = communicator()->stringToProxy("IceGrid/Admin");
oadminB = oadminB->ice_locator( locB );

// change the default locator
communicator()->setDefaultLocator( locB );

// create another proxy, should use the new locator (DOES NOT WORK)
Ice::ObjectPrx oadminC = communicator()->stringToProxy("IceGrid/Admin");

return 0;
}


here's the output (with ip addresses replaced with x.x.x). Note how "thru locator B" entries should go to localhost on 127.0.0.1 but they go to the remote host.

==========
default locator :IceGrid/Locator -t:tcp -h remotehost -p 12000

thru default locator :
local address = 129.x.x.x:60767
remote address = 172.x.x.x:32855

thru default locator 2:
local address = 129.x.x.x:60767
remote address = 172.x.x.x:32855

locator B:
local address = 127.0.0.1:60525
remote address = 127.0.0.1:12005

thru locator B :
local address = 129.x.x.x:60767
remote address = 172.x.x.x:32855

new default locator :IceGrid/Locator -t:tcp -h localhost -p 12005

thru locator B as default :
local address = 129.x.x.x:60767
remote address = 172.x.x.x:32855
======

bernard

You need to use different object identities for your different locators. See IceGrid.InstanceName.

The Ice runtime uses these identities as keys of its local Locator caches.

Cheers,
Bernard

n2503v

Thanks Bernard,

made it all clear and it works now.


just a side note... as I was playing with the Ice::ObjectPrx interface, it seemed to me that it's slightly inconsistent.

there're several functions which come in pairs, basically getXXX and newXXX, e.g.

Context ice_getContext();
Object* ice_newContext(Context ctx);

and then there those which only have newXXX, but the name does not reflect it, e.g.
Object* ice_router(Router* rtr);
Object* ice_locator(Locator* loc);

I guess there're must be a reason why you don't have something like this:
Locator* ice_getLocator();
Object* ice_newLocator(Locator* loc);

cheers, alex