helloworld sample not working

jdepp

I tried to do the helloworld sample and after changing the port default to an open one and going through the adapter change for .net, all I get when running the page is 'loading'. Is there something else I am missing here?

Dario Crivelli

If there is any step missing in the Remote Adapter configuration, the Server startup may block.
As a first check, please make sure that the Server has completed its startup, by looking for the "Server ... listening to ..." message in the Server log.
We can help you analyze the log, if needed.

jdepp

Dario Crivelli If there is any step missing in the Remote Adapter configuration, the Server startup may block.
As a first check, please make sure that the Server has completed its startup, by looking for the "Server ... listening to ..." message in the Server log.
We can help you analyze the log, if needed.

C:\Lightstreamer_Moderato_5_0_Colosseo_20120803\Lightstreamer\bin\windows>call L
S.bat run
Java environment:
JAVA_HOME = C:\Program Files\Java\jre7
JAVA_OPTS = -server
ECHO is off.
Lightstreamer Server directory:
LS_HOME = C:\Lightstreamer_Moderato_5_0_Colosseo_20120803\Lightstreamer
ECHO is off.
Starting Lightstreamer Server...
Please check logs for detailed information.
10.Sep.12 13:33:07,969 < INFO> Lightstreamer Server 5.0 build 1576
10.Sep.12 13:33:08,170 < INFO> Lightstreamer Server starting in Moderato edition
10.Sep.12 13:33:08,397 < WARN> Only minimal JMX management support is available
with the current license
10.Sep.12 13:33:08,419 < WARN> No users defined for RMI Adaptor. Not started.
10.Sep.12 13:33:08,431 < INFO> SERVER pool size set by default at 10
10.Sep.12 13:33:08,464 < WARN> No users defined for Internal Monitor.
10.Sep.12 13:33:08,558 < INFO> data_provider element without name attribute; usi
ng DEFAULT as the default name
10.Sep.12 13:33:08,560 < INFO> Loading Data Adapter DEMO.MONITOR
10.Sep.12 13:33:08,561 < INFO> Loading Data Adapter DEMO.QUOTE_ADAPTER
10.Sep.12 13:33:08,560 < INFO> Loading Metadata Adapter DEMO
10.Sep.12 13:33:08,563 < INFO> Finished loading Data Adapter DEMO.MONITOR
10.Sep.12 13:33:08,564 < INFO> Loading Metadata Adapter PROXY_HELLOWORLD
10.Sep.12 13:33:08,563 < INFO> Loading Data Adapter DEMO.PORTFOLIO_ADAPTER
10.Sep.12 13:33:08,566 < INFO> Loading Data Adapter DEMO.CHAT_ROOM
10.Sep.12 13:33:08,568 < INFO> Loading Data Adapter PROXY_HELLOWORLD.DEFAULT
10.Sep.12 13:33:08,567 < INFO> Loading Data Adapter DEMO.SIMPLE_MESSENGER
10.Sep.12 13:33:08,791 < INFO> Finished loading Data Adapter PROXY_HELLOWORLD.DE
FAULT
10.Sep.12 13:33:08,820 < INFO> Loading inner Proxy Data Adapter
10.Sep.12 13:33:08,904 < INFO> Finished loading Metadata Adapter PROXY_HELLOWORL
D
10.Sep.12 13:33:08,919 < INFO> Connecting...
10.Sep.12 13:33:09,055 < INFO> Waiting for a connection on port 6662...
10.Sep.12 13:33:09,058 < INFO> Waiting for a connection on port 6661...
10.Sep.12 13:33:09,097 < INFO> StockQuotesDataAdapter ready.
10.Sep.12 13:33:09,101 < INFO> Finished loading Data Adapter DEMO.QUOTE_ADAPTER
10.Sep.12 13:33:09,089 < INFO> PortfolioDataAdapter ready
10.Sep.12 13:33:09,103 < INFO> Finished loading Data Adapter DEMO.PORTFOLIO_ADAP
TER
10.Sep.12 13:33:09,084 < INFO> IMDataAdapter ready
10.Sep.12 13:33:09,105 < INFO> Finished loading Data Adapter DEMO.SIMPLE_MESSENG
ER
10.Sep.12 13:33:09,084 < INFO> MixedMetadataAdapter ready
10.Sep.12 13:33:09,107 < INFO> Finished loading Metadata Adapter DEMO
10.Sep.12 13:33:09,100 < INFO> ChatDataAdapter ready
10.Sep.12 13:33:09,109 < INFO> Finished loading Data Adapter DEMO.CHAT_ROOM
10.Sep.12 13:33:09,117 < INFO> Selector pool size set by default at 2
10.Sep.12 13:33:09,119 < INFO> Selector maximum load set by default at 1000
10.Sep.12 13:33:09,222 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 1
10.Sep.12 13:33:09,228 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 2
10.Sep.12 13:33:09,238 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 1
10.Sep.12 13:33:09,244 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 2
10.Sep.12 13:33:09,255 < INFO> Created selector thread: NIO WRITE SELECTOR 1
10.Sep.12 13:33:09,261 < INFO> Created selector thread: NIO WRITE SELECTOR 2
10.Sep.12 13:33:09,270 < INFO> Created selector thread: NIO READ SELECTOR 1
10.Sep.12 13:33:09,275 < INFO> Created selector thread: NIO READ SELECTOR 2
10.Sep.12 13:33:09,281 < INFO> Created selector thread: NIO CHECK SELECTOR 1
10.Sep.12 13:33:09,286 < INFO> Created selector thread: NIO CHECK SELECTOR 2
10.Sep.12 13:33:09,292 < INFO> Created selector thread: NIO WRITE SELECTOR 1
10.Sep.12 13:33:09,298 < INFO> Created selector thread: NIO WRITE SELECTOR 2
10.Sep.12 13:33:09,303 < INFO> Created selector thread: NIO READ SELECTOR 1
10.Sep.12 13:33:09,308 < INFO> Created selector thread: NIO READ SELECTOR 2
10.Sep.12 13:33:09,314 < INFO> Created selector thread: NIO CHECK SELECTOR 1
10.Sep.12 13:33:09,320 < INFO> Created selector thread: NIO CHECK SELECTOR 2
10.Sep.12 13:33:09,394 < INFO> Events pool size set by default at 2
10.Sep.12 13:33:09,416 < INFO> Pump pool size set by default at 2
10.Sep.12 13:33:09,554 < INFO> Lightstreamer on Java Virtual Machine: Oracle Cor
poration, Java HotSpot(TM) 64-Bit Server VM, 22.1-b02, 1.7.0_03-b05 on Windows 7
10.Sep.12 13:33:09,555 < INFO> Lightstreamer Server 5.0 build 1576 starting...
10.Sep.12 13:33:09,577 < INFO> Server "Lightstreamer HTTP Server" listening to *
:8167 ...

Thank you for your response. I checked the logfile and verified that the Server is running...
I used the following tutorial http://www.lightstreamer.com/docs/articles/DotNET-Data-Adapter_Tutorial_Colosseo/index.htm
and created the VB data Adapter.

Dario Crivelli

Sorry, now I realize that I was not correct in my last post.
Since the configuration in adapters.xmlspecifies that the Proxy Adapter to be mounted on the Server is the "robust" version (i.e. the RobustNetworkedDataProvider ), the unavailability of the remote part does not prevent the Server startup from completing.
However, until the connection occurs, the client cannot get any data.

In fact, the log shows that the Server has started, but it is still waiting for connections on ports 6661 and 6662 to be established.
Beside the Server, you should have launched the Remote Adapter process, through the "adapter_vb.exe“ program you have built.
May you please confirm that? What do you see in the process console? Perhaps the connections are prevented by something in your environment.
When the connections are established, you will see "Connected on port ..." messages in the Server log.

jdepp

Thanks for your response. I checked to make sure the Server is up and running and it is:


C:\Lightstreamer_Moderato_5_0_Colosseo_20120803\Lightstreamer\bin\windows>call L
S.bat run
Java environment:
JAVA_HOME = C:\Program Files\Java\jre7
JAVA_OPTS = -server
ECHO is off.
Lightstreamer Server directory:
LS_HOME = C:\Lightstreamer_Moderato_5_0_Colosseo_20120803\Lightstreamer
ECHO is off.
Starting Lightstreamer Server...
Please check logs for detailed information.
11.Sep.12 09:59:22,582 < INFO> Lightstreamer Server 5.0 build 1576
11.Sep.12 09:59:22,653 < INFO> Lightstreamer Server starting in Moderato edition
11.Sep.12 09:59:22,746 < WARN> Only minimal JMX management support is available
with the current license
11.Sep.12 09:59:22,756 < WARN> No users defined for RMI Adaptor. Not started.
11.Sep.12 09:59:22,765 < INFO> SERVER pool size set by default at 10
11.Sep.12 09:59:22,808 < WARN> No users defined for Internal Monitor.
11.Sep.12 09:59:22,884 < INFO> Loading Metadata Adapter DEMO
11.Sep.12 09:59:22,888 < INFO> Loading Data Adapter DEMO.QUOTE_ADAPTER
11.Sep.12 09:59:22,889 < INFO> Loading Data Adapter DEMO.PORTFOLIO_ADAPTER
11.Sep.12 09:59:22,894 < INFO> Loading Data Adapter DEMO.MONITOR
11.Sep.12 09:59:22,895 < INFO> Loading Data Adapter DEMO.CHAT_ROOM
11.Sep.12 09:59:22,897 < INFO> Loading Data Adapter DEMO.SIMPLE_MESSENGER
11.Sep.12 09:59:22,946 < INFO> Finished loading Data Adapter DEMO.MONITOR
11.Sep.12 09:59:23,143 < INFO> ChatDataAdapter ready
11.Sep.12 09:59:23,145 < INFO> Finished loading Data Adapter DEMO.CHAT_ROOM
11.Sep.12 09:59:23,147 < INFO> IMDataAdapter ready
11.Sep.12 09:59:23,148 < INFO> Finished loading Data Adapter DEMO.SIMPLE_MESSENG
ER
11.Sep.12 09:59:23,158 < INFO> StockQuotesDataAdapter ready.
11.Sep.12 09:59:23,160 < INFO> Finished loading Data Adapter DEMO.QUOTE_ADAPTER
11.Sep.12 09:59:23,143 < INFO> PortfolioDataAdapter ready
11.Sep.12 09:59:23,162 < INFO> Finished loading Data Adapter DEMO.PORTFOLIO_ADAP
TER
11.Sep.12 09:59:23,159 < INFO> MixedMetadataAdapter ready
11.Sep.12 09:59:23,165 < INFO> Finished loading Metadata Adapter DEMO
11.Sep.12 09:59:23,175 < INFO> Selector pool size set by default at 2
11.Sep.12 09:59:23,177 < INFO> Selector maximum load set by default at 1000
11.Sep.12 09:59:23,230 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 1
11.Sep.12 09:59:23,239 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 2
11.Sep.12 09:59:23,252 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 1
11.Sep.12 09:59:23,259 < INFO> Created selector thread: NIO TLS/SSL HANDSHAKE SE
LECTOR 2
11.Sep.12 09:59:23,273 < INFO> Created selector thread: NIO WRITE SELECTOR 1
11.Sep.12 09:59:23,278 < INFO> Created selector thread: NIO WRITE SELECTOR 2
11.Sep.12 09:59:23,292 < INFO> Created selector thread: NIO READ SELECTOR 1
11.Sep.12 09:59:23,300 < INFO> Created selector thread: NIO READ SELECTOR 2
11.Sep.12 09:59:23,309 < INFO> Created selector thread: NIO CHECK SELECTOR 1
11.Sep.12 09:59:23,316 < INFO> Created selector thread: NIO CHECK SELECTOR 2
11.Sep.12 09:59:23,325 < INFO> Created selector thread: NIO WRITE SELECTOR 1
11.Sep.12 09:59:23,332 < INFO> Created selector thread: NIO WRITE SELECTOR 2
11.Sep.12 09:59:23,342 < INFO> Created selector thread: NIO READ SELECTOR 1
11.Sep.12 09:59:23,349 < INFO> Created selector thread: NIO READ SELECTOR 2
11.Sep.12 09:59:23,358 < INFO> Created selector thread: NIO CHECK SELECTOR 1
11.Sep.12 09:59:23,364 < INFO> Created selector thread: NIO CHECK SELECTOR 2
11.Sep.12 09:59:23,444 < INFO> Events pool size set by default at 2
11.Sep.12 09:59:23,462 < INFO> Pump pool size set by default at 2
11.Sep.12 09:59:23,488 < INFO> Lightstreamer on Java Virtual Machine: Oracle Cor
poration, Java HotSpot(TM) 64-Bit Server VM, 22.1-b02, 1.7.0_03-b05 on Windows 7
11.Sep.12 09:59:23,491 < INFO> Lightstreamer Server 5.0 build 1576 starting...
11.Sep.12 09:59:23,516 < INFO> Server "Lightstreamer HTTP Server" listening to *
:8167 ...

When I tried loading it through firefox, I get the following error:

Statuswidget not defined.

Dario Crivelli

The log shown is no longer related with the .NET Adapter tutorial, as it does no longer mount the PROXY_HELLOWORLD Adapter Set. I suppose it is the one related to the basic tutorial.
In order to avoid confusion:

The Server configured for the .NET tutorial showed a communication problem with the "adapter_vb.exe“ program you had built; this is indicated by missing "Connected on port 6661" and "Connected on port 6662" lines in the Server log.
To analyze the issue, you should relaunch that configuration, then launch "adapter_vb.exe“ and see if there is any startup problem.
The Server configured for the basic tutorial starts correctly, but now you see errors in the client page.
As a first check, please ensure that you have written "StatusWidget" in the correct way, as the reported error message contains "Statuswidget", with a small "w".
The "StatusWidget" is only cited as an optional extension to the client code, at the end of the "Creating the front-end" paragraph; can you confirm that you have tried this extension?
You are writing on the ".NET Client API" forum, but I suppose it is a mistake, because you seem to be interested in trying a .NET Data Adapter. Can you confirm that? [NOW MOVED]

jdepp

Dario Crivelli The log shown is no longer related with the .NET Adapter tutorial, as it does no longer mount the PROXY_HELLOWORLD Adapter Set. I suppose it is the one related to the basic tutorial.
In order to avoid confusion:

The Server configured for the .NET tutorial showed a communication problem with the "adapter_vb.exe“ program you had built; this is indicated by missing "Connected on port 6661" and "Connected on port 6662" lines in the Server log.
To analyze the issue, you should relaunch that configuration, then launch "adapter_vb.exe“ and see if there is any startup problem.

The Server configured for the basic tutorial starts correctly, but now you see errors in the client page.
As a first check, please ensure that you have written "StatusWidget" in the correct way, as the reported error message contains "Statuswidget", with a small "w".
The "StatusWidget" is only cited as an optional extension to the client code, at the end of the "Creating the front-end" paragraph; can you confirm that you have tried this extension?

You are writing on the ".NET Client API" forum, but I suppose it is a mistake, because you seem to be interested in trying a .NET Data Adapter. Can you confirm that?

Yes I am interested in the .NET Data Adapter. But I am also just trying to get something to work that I could use to start a project that is very similar to the dojo demo you have but since I am a .NET programmer, I need to learn to be able to understand the dojo demo. I would like to simulate the same thing but have data/stats pushed from a sql server database to the lightstreamer server and shown in a dojo client interface. Am I on the right track here? In fact I am willing to learn strictly through javascript as long as I am able to use dojo and get the realtime data from my sql server database and pushed through to interface through lightstreamer

Dario Crivelli

Your projects consists in various parts, quite independent from one another.
With respect to a basic javascript page using Lightstreamer, you have to:

Extend the page by using Dojo and integrating the Lightstreamer Client Library into Dojo.
Setup a Remote Data Adapter written in .NET and configure the Server for using this Data Adapter.
Write your custom implementation of the Remote Data Adapter so that it gets data from your database.

We provide examples and instructions for all these steps; in particular:

As said, A demo of a front-end based on Dojo is available.
Moreover, a full integration of Lightstreamer in Dojo, in the form of a Lightstreamer-backed Dojo-store, is about to be released;
you may choose to wait for a few weeks in order to take advantage of a simpler tool.
In addition to the aforementioned HelloWorld tutorial, examples of Remote Adapters for the StockList Demo are available in the sdk_adapter_dotnet folder of the distribution package.
An example of a Data Adapter which gets its data from an underlying database is shown in a forum thread.
Unfortunately, the example is in java; but it clarifies the rationale of the approach.

So, you are on the right track.
Unfortunately, you seemed to encounter various issues preventing your tests from working.
Are you still struggling with those issues? We apologize for anything misleading you may have found in our documentation, but now we can only try to help you fixing the issues, starting with the suggestions included in my last post.

jdepp

Dario Crivelli Your projects consists in various parts, quite independent from one another.
With respect to a basic javascript page using Lightstreamer, you have to:

Extend the page by using Dojo and integrating the Lightstreamer Client Library into Dojo.

Setup a Remote Data Adapter written in .NET and configure the Server for using this Data Adapter.

Write your custom implementation of the Remote Data Adapter so that it gets data from your database.

We provide examples and instructions for all these steps; in particular:

As said, A demo of a front-end based on Dojo is available.
Moreover, a full integration of Lightstreamer in Dojo, in the form of a Lightstreamer-backed Dojo-store, is about to be released;
you may choose to wait for a few weeks in order to take advantage of a simpler tool.

In addition to the aforementioned HelloWorld tutorial, examples of Remote Adapters for the StockList Demo are available in the sdk_adapter_dotnet folder of the distribution package.

An example of a Data Adapter which gets its data from an underlying database is shown in a forum thread.
Unfortunately, the example is in java; but it clarifies the rationale of the approach.

So, you are on the right track.
Unfortunately, you seemed to encounter various issues preventing your tests from working.
Are you still struggling with those issues? We apologize for anything misleading you may have found in our documentation, but now we can only try to help you fixing the issues, starting with the suggestions included in my last post.

Thank you. I will take your suggestions and work on each part and post back when I have issues. Hats off to you guys for an exceptional service.

jdepp

Thank you. I will take your suggestions and work on each section; posting back if I have issues.

jdepp

Sorry if I am posting this in the wrong section but where exactly are these files and how are they accessible:

"../commons/lightstreamer/lscommons.js
commons/lightstreamer/lspushpage.js

I checked all folders where I installed lightstreamer and cannot trace it.

Dario Crivelli

Unfortunately, we are still in the transition phase from the "Duomo" release to the "Colosseo" release and this introduces additional complication, both for you and for us.
The JavaScript Client Library has changed significantly from version 5.0 (in Duomo) to version 6.0 (in Colosseo).
Actually, the "dojo demo" provided in our demo list is still based on the JavaScript Client Library 5.0, whereas you have downloaded version 6.0, hence the problems you see.

We suggest you waiting for us to publish the ported version of the Dojo demo, which, as said, also features a simpler integration strategy.
As far as we can evaluate at this moment, it should be a matter of days; we will post upon the release.
This does not interfere with the other adapter side activities.
Sorry for the confusion.

Mone

jdepp,

while the demo is not ready, you can start checking out a first version of the LightstreamerStore class from github: https://github.com/Weswit/DojoLightstreamer
The class implements the dojo/store interface so you should be able to use it together with any dojo class that expects a store to work (like a dgrid)

Here is a simple example to get you started:

[SYNTAX=JS] var lsClient = new LightstreamerClient("http://push.lightstreamer.com","DEMO");

lsClient.connect();

var stockStore = new LightstreamerStore(lsClient, {
items: ["item1","item2"],
fields: ["stock_name","last_price"],
mode: "MERGE",
dataAdapter: "QUOTE_ADAPTER"
});

//you can observe the store for updates
stockStore.query().observe(function(object){
console.log(object["stock_name"]+":"+object["last_price"]);
});
//or bind it to some dojo class:
//let's say grids is your dgrid instance
grid.setStore(stockStore);

[/SYNTAX]

HTH