Unable to find Engine

[ap7256]

Must any Adapter be started and hooked into LS server before clients start connecting to LS server?

Mone what did you mean saying "Your configuration is ok if you access the page from Lightstreamer internal web server with an url like http://localhost:8080/MyApp/"?

My testing HTML page is on my development machine, LS server is also on my development machine, a .NET adapter is also on my development machine. Is this some kind of confugration that would probably not work?

Thanks

[Mone]

Mone what did you mean saying "Your configuration is ok if you access the page from Lightstreamer internal web server with an url like http://localhost:8080/MyApp/"?

I mean that if your LS server also serve the static pages you can access it via localhost and without setting the domain, in the other case (i.e.: pages from a web server, streaming from Lightstreamer) than you need to set the domain accordingly to the LS host setting. In your case (in the case you're not using Lightstreamer internal web server) you should change the setDomain call:
lsPage.context.setDomain("domain.com");

If you're using Lightstreamer internal web server than the configuration seems correct. Please could you send Lightstreamer's log?

[Peterhuang]

Hi Mone,

Could you help me to confirm this quesiton? Thanks!

If I config Demo on server which has public IP address but no domain name,
how should I set domain and LSHost?
One important point: Someone will visit this Demo through internet.

I try to write web page like below, but it throw exception like "ER Bind Unable to find Engine..."

<script>
var lsPage = new PushPage();
lsPage.context.setDomain("55.55.55.55");
lsPage.onEngineCreation = function(engine) {
engine.connection.setLSHost("55.55.55.55");
engine.connection.setLSPort(8080);
engine.connection.setAdapterName("DEMO");
engine.changeStatus("STREAMING");
}
lsPage.bind();
</script>

Or

<script>
var lsPage = new PushPage();
lsPage.context.setDomain(null);
lsPage.onEngineCreation = function(engine) {
engine.connection.setLSHost("55.55.55.55");
engine.connection.setLSPort(8080);
engine.connection.setAdapterName("DEMO");
engine.changeStatus("STREAMING");
}
lsPage.bind();
</script>

[Mone]

Hi,

NOTE that this is advised against, but if it's only for some tests it is ok:

if the pages are on Lightstreamer internal web server just use null (for everything...):
var lsPage = new PushPage();<br /> lsPage.context.setDomain(null);<br /> lsPage.onEngineCreation = function(engine) {<br /> engine.connection.setLSHost(null);<br /> engine.connection.setLSPort(null);<br /> engine.connection.setAdapterName("DEMO");<br /> engine.changeStatus("STREAMING");<br /> }<br /> lsPage.bind();<br />
and access you application via IP (works at least on FX and IE, not sure on other browsers)

in the other case you can't access the page via IP but you need a hostname (2 if LS and web server are on different machines)

HTH

[Peterhuang]

Hi Mone,

Thanks for your reply.

My environment is that the demo is running in external web server on same machine.

Under this environment, I can't use IP address directly for accessing from Internet, right?

[Mone]

Sorry, you can't.

If you can access the client machine's hosts file you can map there your IP to something like www.mysite.com.

Moreover note that use two server (web & LS) on the same machine is not compatible with Opera browser: http://www.lightstreamer.com/vb/showthread.php?t=28

[Peterhuang]

Yes, you're right.

Thanks for your answer.