[EMA Java] How to receive connection level events such as a disconnection?

Hi @andre.malenfant

If you want to monitor connection loss, you can explicitly registerClient for the MMT_LOGIN domain. This way you will receive Status Msg when the connection is lost and RefreshMsg when connection is restored and the application successfully logs back into the server again.

So, for example if I run the example example330 Login_Streaming,which registers for MMT_LOGIN (and IBM.N MarketPrice).

The stream with Item Handle 1 is the Login stream below.

When I disconnect my VPN I get the following:

Received Status. Item Handle: 1 Closure: null
Item Name: umer.nalla
Service Name: <not set>
Item State: Open / Suspect / None / 'channel down'
Received Status. Item Handle: 1 Closure: null
Item Name: <not set>
Service Name: <not set>
Item State: Open / Suspect / None / ''
Received Status. Item Handle: 2 Closure: null
Item Name: IBM.N
Service Name: ELEKTRON_DD
Item State: Open / Suspect / None / 'channel down.'

and when I reconnect my VPN I get:

Received Refresh. Item Handle: 1 Closure: null
Item Name: umer.nalla
Service Name: <not set>
Item State: Open / Ok / None / 'Login accepted by host test1-ads.'
Received Status. Item Handle: 1 Closure: null
Item Name: umer.nalla
Service Name: <not set>
Item State: Open / Ok / None / 'channel up'
Received Refresh. Item Handle: 2 Closure: null
Item Name: IBM.N
Service Name: ELEKTRON_DD

If you want to know about individual Service states i.e. if a particular service goes down and then comes back up, then you can register for MMT_DIRECTORY domain events as you mentioned above. This is demonstrated in example331 Directory_Streaming.
Note that if you specify a ServiceName, it will only provide information on that single service. If you want to know about all services, then omit the servicename.

consumer.registerClient(reqMsg.domainType(EmaRdm.MMT_DIRECTORY)
	.serviceName("ELEKTRON_DD"), appClient);