Is there AMI style ice_getConnection?

[rolandsun]

I try to combine Bidirectional Connections and AMI in my project , I use the QtDispatcher atrributted by alex, and I try to avoid deadlock by using begin_xx end_xx AMI call ,and uncheckCast.. , everything works well except the ice_getConnection is called during

 adapter->activate();
    proxy->ice_getConnection()->setAdapter(adapter);
    proxy->addClient(ident);

it seems to hang,and I can not find the begin_ice_getConnect() in ICE's api,how can I fix or avoid it?

[mes]

Hi Roland,

As you suspected, calling ice_getConnection behaves similarly to making a synchronous proxy invocation, in that calling it from the Qt dispatch thread will cause the program to hang.

The proxy also provides the method ice_getCachedConnection, but this method returns null if no connection has been established yet.

To avoid blocking, I recommend calling begin_ice_ping. Upon successful completion, the connection will be established and you can do something like this in the completion callback:

Ice::ConnectionPtr conn = proxy->ice_getCachedConnection();
assert(conn);
conn->setAdapter(...);

We'll consider adding a better solution to a future Ice release.

Regards,
Mark

[rolandsun]

Thanks Mark, I think it's the best solution we can figure out right now.