Announcement

**Isomorphic** · 22 Jul 2009, 14:48

Whatever response your server returns when the session is expired must contain the loginRequired marker. This is how SmartGWT knows the session is timed out.

**nigel** · 22 Jul 2009, 15:00

Session Timeout

Do you have some sample code of this?

Is this server response via the ServiceImpl or via the Web Server? How do you hook in the loginRequired marker.

Can you provide some explanation of how the server and client talk to each other to handle session timeout? I really need some documentation and/or example to handle this.

Thanks again,

**Isomorphic** · 22 Jul 2009, 15:10

It's simpler than you seem to think. The loginRequiredMarker simply needs to appear in the HTTP response, that's it. This will trigger the relogin flow.

Here it is for your convenience.

Code:

<SCRIPT>//'"]]>>isc_loginRequired
//
// Embed this whole script block VERBATIM into your login page to enable
// SmartClient RPC relogin.
while (!window.isc && document.domain.indexOf(".") != -1) {
    try {
	//>IDocument
	// Safari doesn't throw an exception, but returns null.
	//<IDocument
        if (parent.isc == null) {
            document.domain = document.domain.replace(/.*?\./, '');
            continue;
        } 
        break;
    } catch (e) {
        document.domain = document.domain.replace(/.*?\./, '');
    }
}
var isc = top.isc ? top.isc : window.opener ? window.opener.isc : null;
if (isc) isc.RPCManager.delayCall("handleLoginRequired", [window]);
</SCRIPT>

**nigel** · 22 Jul 2009, 16:11

Session Timeout

Hi There, thanks for the response. We put that in our only Main.html page that is our EntryPoint for all of our GWT pages but unfortunately it did not call our session timeout callback class that implements the LoginRequiredCallback interface.

The code below is in our Main.java which is our EntryPoint.

Code:

        LoginRequiredCallbackImpl loginCallback = new LoginRequiredCallbackImpl();

        RPCManager.setLoginRequiredCallback(loginCallback);

And the LoginRequiredCallbackImpl has the following:

Code:

    public class LoginRequiredCallbackImpl implements LoginRequiredCallback {

        public void loginRequired(int transactionNum, RPCRequest request, RPCResponse response) {
            SC.say("***** SESSION TIMEOUT callback!");
        }
    }

Does this require that the server have the SmartGWT EE on the server also? or just use the SmartGwt.jar.

Thanks for helping again.

**Isomorphic** · 23 Jul 2009, 11:01

So yet again, what you need to do is put the loginRequiredMarker in the HTTP response that SmartGWT will receive when there is an attempt to load data but the session is timed out. Not in some other random HTML file. In the HTTP response that SmartGWT will receive when there is an attempt to load data but the session is timed out.

**nigel** · 23 Jul 2009, 12:29

Session Timeout Response

I have taken your feedback and changed by server side implementation class to check for an expired session and if so then write your JavaScript as stated above into the response.

The above code does get called at session timeout but unfortunately it still does not work. Please just provide a simple trivial example that demonstrates this functionality if this is wrong.

Code:

        if ((SecurityContextHolder.getContext() == null)
                || (SecurityContextHolder.getContext().getAuthentication() == null)
                ||!SecurityContextHolder.getContext().getAuthentication().isAuthenticated()
                || (SecurityContextHolder.getContext().getAuthentication().getPrincipal() instanceof String)) {
        	
            	HttpServletResponse response = this.getThreadLocalResponse();
            	String scriptText = "<SCRIPT>//'\"]]>>isc_loginRequired "+
				        "// Embed this whole script block VERBATIM into your login page to enable"+
				        "// SmartClient RPC relogin."+
				        " while (!window.isc && document.domain.indexOf(\".\") != -1) {"+
				        "    try { "+
				        "	//>IDocument "+
				        "	// Safari doesn't throw an exception, but returns null."+
				        "	//<IDocument "+
				        "        if (parent.isc == null) { "+
				        "            document.domain = document.domain.replace(/.*?\\./, ''); "+
				        "            continue; "+
				        "        } "+ 
				        "        break; "+
				        "    } catch (e) { "+
				        "        document.domain = document.domain.replace(/.*?\\./, ''); "+
				        "    } "+
				        " } "+
				        " var isc = top.isc ? top.isc : window.opener ? window.opener.isc : null; "+
				        " if (isc) isc.RPCManager.delayCall(\"handleLoginRequired\", [window]); "+
				        " </SCRIPT> ";
            	try {
            		ServletOutputStream stream = response.getOutputStream();
            		stream.write(scriptText.getBytes());
            		stream.flush();
            		stream.close();
            	} catch (IOException ioe){
            		log.error("Failed to output script logout text");
            	}
            	return null;
            }

**Isomorphic** · 23 Jul 2009, 12:36

No need to see the Java code, just use Firebug, Fiddler or any other similar tool to verify that you are sending the response you intend.

Sorry, we can't keep helping you with this when so many others have it working without assistance. If you need some more help, consider purchasing support. Best of luck.

**nigel** · 23 Jul 2009, 12:56

Session Timeout Response

We have looked throughout this forum and found no answers to the LoginRequiredCallback or handling of Session Timeout that are complete. This is a critical piece for web development and is unfortunately missing from this forum. I would sign up for support if I felt that this posting could be answered and sample code provided.

**Isomorphic** · 23 Jul 2009, 13:51

Then you should sign up for support.

Sorry if you're frustrated, please understand, Isomorphic Support is not allowed to spend large amounts of time helping non-paying users to configure something that is known to work, and where others have succeeded. Become a customer and things are different.

**andrewjohnson** · 6 Aug 2009, 12:18

We are having an issue triggering the SmartGWT session timeout...

Specifically, we are using Spring which will redirect all unauthenticated requests to a login page, which includes any requests to the RemoteServiceServlet's. So after login, if there is a session timeout the next SmartGWT request to the RemoteServiceServlet will cause the spring framework to redirect to the login page, providing the login page as a response...

The login page gets rendered, but usually within a panel of the SmartGWT interface screen. This login page contains the loginRequiredMarker code, but this JavaScript does not seem to get triggered. Infact we have tried embedding out own JavaScripts code into the page (to redirect the parent window), but this JavaScript does not get called. Its as if all JavaScript in disabled in this context? Is there a way to enable it?

**Isomorphic** · 6 Aug 2009, 15:58

Hi Andrew,

How do you end up with your login form showing in a panel somewhere? The normal behavior of SmartGWT's comm system (RPCManager) would not show the login page anywhere. If you are using some other type of comm system (maybe GWT-RPC?) that would explain both the login page appearing and the loginRequiredMarker not working.

**lazinskip** · 10 Aug 2009, 15:08

Hi
I am using gwt 1.7.0 and smartgwt 1.1
I have tried to add to application session timeout functionality.
According to relogin described in smartclient documentation, when session becomes invalid my servlet return loginRequiredMarker. It works fine, loginrequired() method is called, I show login dynamicform and in my login servlet new session is created and I call RPCManager.resendTransaction() method. This cause to call again servlet which had session timeout. This time session is valid data is returned and here is my problem: grid which call request does not show any data. In developer console there is no error or warn about something goes wrong.
Below developer console log since call to servlet which had session timeout:

Code:

01:03:23.484:MUP3:INFO:ResultSet:isc_ResultSet_84 (created by: lista):Invalidating cache
01:03:23.484:MUP3:DEBUG:ListGrid:lista:Setting filter to: {
}
01:03:23.484:MUP3:INFO:ResultSet:isc_ResultSet_84 (created by: lista):setCriteria: filter criteria changed, invalidating cache
01:03:23.484:MUP3:INFO:ResultSet:isc_ResultSet_84 (created by: lista):Invalidating cache
01:03:23.500:MUP3:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):getRange(0,16), cache check: 5,10 firstMissingRow: 5 lastMissingRow: 10
01:03:23.500:MUP3:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):getRange: no scrolling direction detected
01:03:23.500:MUP3:INFO:ResultSet:isc_ResultSet_84 (created by: lista):getRange(0, 16) will fetch from 0 to 16
01:03:23.500:MUP3:INFO:ResultSet:isc_ResultSet_84 (created by: lista):fetching rows 0,16 from server
01:03:23.515:MUP3:DEBUG:RPCManager:Using ActiveX XMLHttpRequest via constructor: MSXML2.XMLHTTP
01:03:23.515:MUP3:DEBUG:RPCManager:Grabbed prompt from first request that defined one: Wyszukiwanie rekord�w odpowiadających kryteriom...
01:03:23.625:MUP3:INFO:RPCManager:sendQueue[5]: 1 RPCRequest(s); transport: xmlHttpRequest; target: http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../GetPodmioty.Servlet
01:03:23.625:MUP3:DEBUG:RPCManager:Using ActiveX XMLHttpRequest via constructor: MSXML2.XMLHTTP
01:03:23.625:MUP3:DEBUG:RPCManager:XMLHttpRequest POST to http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../GetPodmioty.Servlet contentType: text/xml with body -->
<request>
    <data>
        <PodmiotyDS/>
    </data>
    <dataSource>PodmiotyDS</dataSource>
    <operationType>fetch</operationType>
    <operationId></operationId>
    <startRow>0</startRow>
    <endRow>16</endRow>
    <sortBy></sortBy>
    <textMatchStyle>exact</textMatchStyle>
    <componentId>lista</componentId>
    <oldValues></oldValues>
</request><--
01:03:23.734:RDQ9:DEBUG:ListGrid:lista:delaying adjustOverflow: childResized
01:03:23.734:RDQ9:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):getRange(0, 16) satisfied from cache
01:03:23.765:XRP1:INFO:RPCManager:transaction 5 arrived after 140ms
01:03:23.765:XRP1:INFO:RPCManager:loginRequired for transaction: 5
01:03:23.906:RDQ2:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):getRange(0, 16) satisfied from cache
01:04:22.750:MUP2:DEBUG:RPCManager:Using ActiveX XMLHttpRequest via constructor: MSXML2.XMLHTTP
01:04:22.828:MUP2:INFO:RPCManager:sendQueue[6]: 1 RPCRequest(s); transport: xmlHttpRequest; target: http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../CheckUser.Servlet
01:04:22.828:MUP2:DEBUG:RPCManager:Using ActiveX XMLHttpRequest via constructor: MSXML2.XMLHTTP
01:04:22.828:MUP2:DEBUG:RPCManager:XMLHttpRequest POST to http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../CheckUser.Servlet contentType: text/xml with body -->
<DSUser>
    <login>a</login>
    <passwd>a</passwd>
</DSUser><--
01:04:22.875:XRP8:INFO:RPCManager:transaction 6 arrived after 47ms
01:04:22.875:XRP8:DEBUG:RPCManager:Result string for transaction 6: "<?xml version="1.0" encoding="UTF-8"?>
<users>
  <user>
    <login>a</login>
    <passwd>a</passwd>
    <opis>Szybki user</opis>
    <logCheck>checked</logCheck>
  </user>
</users>

"
01:04:22.890:XRP8:INFO:RPCManager:rpcResponse(unstructured) results -->"<?xml version="1.0" encoding="UTF-8"?>
<users>
  <user>
    <login>a</login>
    <passwd>a</passwd>
    <opis>Szybki user</opis>
    <logCheck>checked</logCheck>
  </user>
</users>

"<--
01:04:22.968:XRP8:DEBUG:ListGrid:lista:delaying adjustOverflow: childClear
01:04:23.109:XRP8:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):getRange(0, 16) satisfied from cache
01:04:23.484:XRP8:INFO:RPCManager:Resubmitting transaction number: 5
01:04:23.484:XRP8:INFO:RPCManager:sendQueue[5]: 1 RPCRequest(s); transport: xmlHttpRequest; target: http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../GetPodmioty.Servlet
01:04:23.484:XRP8:DEBUG:RPCManager:Using ActiveX XMLHttpRequest via constructor: MSXML2.XMLHTTP
01:04:23.500:XRP8:DEBUG:RPCManager:XMLHttpRequest POST to http://localhost:8081/Struktura_springsmartWS/struktura_springsmart/../GetPodmioty.Servlet contentType: text/xml with body -->
<request>
    <data>
        <PodmiotyDS/>
    </data>
    <dataSource>PodmiotyDS</dataSource>
    <operationType>fetch</operationType>
    <operationId></operationId>
    <startRow>0</startRow>
    <endRow>16</endRow>
    <sortBy></sortBy>
    <textMatchStyle>exact</textMatchStyle>
    <componentId>lista</componentId>
    <oldValues></oldValues>
</request><--
01:04:23.812:XRP8[E]:WARN:DynamicForm:isc_OID_20:couldn't find focus item: undefined
01:04:24.468:XRP8[E]:DEBUG:ListGrid:lista:delaying adjustOverflow: childResized
01:04:24.484:XRP8[E]:DEBUG:ListGrid:isc_OID_47:delaying adjustOverflow: childResized
01:04:24.625:XRP0:INFO:RPCManager:transaction 5 arrived after 1141ms
01:04:24.625:XRP0:DEBUG:RPCManager:Result string for transaction 5: "<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>0</status>
  <startRow>0</startRow>
  <endRow>16</endRow>
  <totalRows>350</totalRows>
  <data>
    <record>
      <idPodm>3</idPodm>
      <imie>Dodany podmiot</imie>
      <nazwisko>Jakiś tam podmiot nr: 3</nazwisko>
      <dodane>2009-07-15 11:25:11.524</dodane>
    </record>
...
   </data>
</response>

"
01:04:24.656:XRP0:INFO:RPCManager:rpcResponse(unstructured) results -->"<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>0</status>
  <startRow>0</startRow>
  <endRow>16</endRow>
  <totalRows>350</totalRows>
  <data>
    <record>
      <idPodm>3</idPodm>
      <imie>Dodany podmiot</imie>
      <nazwisko>Jakiś tam podmiot nr: 3</nazwisko>
      <dodane>2009-07-15 11:25:11.524</dodane>
    </record>
...
  </data>
</response>

"<--
01:04:24.734:XRP0:INFO:ResultSet:isc_ResultSet_84 (created by: lista):Received 16 records from server
01:04:24.765:XRP0:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):full length set to: 350
01:04:24.781:XRP0:DEBUG:ResultSet:isc_ResultSet_84 (created by: lista):integrating 16 rows into cache at position 0
01:04:24.796:XRP0:INFO:ResultSet:isc_ResultSet_84 (created by: lista):cached 16 rows, from 0 to 16 (350 total rows, 16 cached)

Am I missing something ?

**Isomorphic** · 10 Aug 2009, 15:28

That log looks fine. Goods things to look at:

1. what component is clear()ing here? Try the clear()s log in the Developer Console

01:04:22.968:XRP8:DEBUG:ListGrid:lista:delaying adjustOverflow: childClear

2. try inspecting the state of the ResultSet after the transaction has resubmitted and completed, eg, what's grid.data.get(0) and does lengthIsKnown() return true. You can do this by writing JavaScript in the Developer Console in SmartGWT 1.1, or since there are now ResultSet APIs in SmartGWT 1.2, you can upgrade and write code that logs the results of calling various methods.

**andrewjohnson** · 11 Aug 2009, 16:11

Originally posted by Isomorphic

Hi Andrew,

How do you end up with your login form showing in a panel somewhere? The normal behavior of SmartGWT's comm system (RPCManager) would not show the login page anywhere. If you are using some other type of comm system (maybe GWT-RPC?) that would explain both the login page appearing and the loginRequiredMarker not working.

Thanks for the help. Although, where can I check to verify if the RPCManager is being used? It seems other callback functions registered by the RPCManager are also not working, so I think you may be right. Where are the setting(s) to change the comm manager being used so I can set it to the RPCManager?

Announcement

Relogin & LoginRequiredCallback Session Timeout

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment