Birt Ihub Viewer freezes in Chrome and other browsers

Hi All,
 
As of today reports in the viewer freeze. I am pretty sure nothing changed in the settings or server. Yesterday they were working fine. I have rebooted Ihub with no result. After that I rebooted the server en restarted ihub. No luck. Is this a known issue. I searched and I can only find 1 thread.
 
 
thanks in advance,
 
Michel

Find more posts tagged with

Comments

JFreeman

Could you elaborate for me on what you mean by reports are freezing?
Does this happen with all reports or only certain reports?
 
Do you see any errors happening in your browsers console output/debugging tools?
Do you see any errors happening in the iHub log files?

zynapzyz

Hi Jesse, 
I Will need to get back on monday. weekend CET starts. 
Tnm for your reply. 
Michel

JFreeman

Sounds good.
I'll keep an eye out for your reply on Monday.

zynapzyz

Hi Jesse,
 
I decided to reinstall my server and Ihub. Because it was working before on a initial install (no problems with freezing browsers), I suspected that reinstalling everything would solve the issue. However it didn't. 
 
I analyzed the issue further and discovered that the reports do run without any issue in the browsers Windows Explorer and Firefox. They don't run in Chrome and safari. Strange because they were working before in these browsers. It's not computer related cause I tested on different machines (Mac and PC .. all have the same issues). To determine if it is LAN related please find below a link to a report. Can u try to run it in Chrome or Safari and let me know if you have the same issue?
 
<a data-ipb='nomediaparse' href='http://zcore.nl/test_freeze.html'>http://zcore.nl/test_freeze.html</a>
 
login with guest, guest
 
I am running the latest version of Chrome and learned from their resources that the browser has been upgraded. Perhaps this has something to do with the issue? Then again I am using Safari for Windows which hasn't been updated cause Apple does not support this version anymore.
 

TUESDAY, JUNE 9, 2015
<div style="color:rgb(102,102,102);font-family:'Open Sans';font-size:12px;">
<div>
<div style="margin:0px 0px 45px;"><a></a>

<a data-ipb='nomediaparse' href='http://googlechromereleases.blogspot.be/2015/06/stable-channel-update.html'>Stable Channel Update</a>
<div style="margin:0px 0px 1.5em;font-size:10.8000001907349px;">
<div> </div>
</div>
<div style="font-size:13.1999998092651px;">The stable channel has been updated to 43.0.2357.124 for Windows, Mac and Linux. A partial list of changes is available in the <a data-ipb='nomediaparse' href='https://chromium.googlesource.com/chromium/src/+log/43.0.2357.81..43.0.2357.124?pretty=fuller&n=10000'>log</a>. 
Key Changes: <ul><li>Updated Adobe Flash Player to 18.0.0.160</li>
</ul> 
Interested in switching release channels? <a data-ipb='nomediaparse' href='http://www.chromium.org/getting-involved/dev-channel'>Find out how</a>. If you find a new issue, please let us know by <a data-ipb='nomediaparse' href='http://crbug.com/'>filing a bug</a>. 
Anthony Laforge 
Google Chrome</div>
</div>
</div>
</div>

JFreeman

Hmm, I am getting some interesting behavior.
On 2 separate machines with different versions of Chrome (one the newest release and one old version) and firefox I get the same behavior. The report loads but then my cursor starts spinning, never stops and then I cannot access any of the menus.
 
Based on this, I'm leaning away from the issue being browser specific.
I do not see any errors outputting to the console in the browser.
I also do not see any lingering JSAPI calls happening either. Each call gets a successful 200 response when I capture the traffic.
 
Is it possible for you to attach your JSAPI code you are using in the test_freeze.html page that is having the issues?

zynapzyz

Hi Jesse,
 
I have the same(spinning cursor) I just use the JSAPI code from the link. please find below:
 
<script type='text/javascript' language='JavaScript' src='<a data-ipb='nomediaparse' href='http://85.25.148.193:8700/iportal/jsapi''>http://85.25.148.193:8700/iportal/jsapi'></script><script</a>type='text/javascript'>actuate.load('viewer');var reqOps = new actuate.RequestOptions( );reqOps.setVolume('Default Volume');reqOps.setCustomParameters({});actuate.initialize( <a>'http://85.25.148.193:8700/iportal/',reqOps==undefined?null:reqOps,</a> null,null,myInit );function myInit(){viewer1 = new actuate.Viewer( 'container1' );viewer1.setReportDesign('/Home/administrator/omzet_naar_betaalmiddel.rptdesign;1');var options = new actuate.viewer.UIOptions( );viewer1.setUIOptions( options );viewer1.submit();}</script><div id='container1' style='border-width: 0px; border-style: solid;'></div> 
 
By the way: I have the same issue when I am running a report in Ihub via the Ihub viewer. So it is not just in webpages but also at the core. As I said, strange thing is that it happened overniight and reinstaling server and Ihub with the same settings/specs that worked before now don't anymore.
 
regards,
 
Michel

JFreeman

Hmm, if you get the same behavior running a report in iHub through the web viewer, I am less inclined to think it is related to your specific JSAPI code.
 
Can you zip and attach your iHub's log files located in "./iHub/data/server/log"?

zynapzyz

Hi Jesse,
 
please find enclosed the log files.
 
If it is not browser related then should it not not work in all browsers? As mentioned I do not have an issue in Explorer and Firefox. However I need to publish some reports on a public website for demo-purposed so because I cannot ask the public not to use a specigfic browser to watch the site it should work for me on all browsers.
 
regards,
 
Michel

JFreeman

Based on your initial description, I am inclined to agree it may be a browser related issue.
However, I get the same behavior in 2 different versions of chrome as well as in Firefox which leads me to believe it may not be a browser specific issue.
 
Do you have any additional jsrvrihub log files in your log directory besides that 2 that were attached?
I would typically expect more from those log files than what I am seeing.

zynapzyz

Hi Jesse,
 
I have send you all the files that are in the logfile dir/ Which version do you have of Chrome and Firefox? Additionally do you also have the issue in Opera or Explorer? 
 
I am running 
 
38.0.5 Firefox (works fine)
11.0.6900.17843 Internet Explorer (works fine) 
30.0.1835.59 opera (works fine)
43.0.2357.12m Chrome (does not work)
5.1.7 (7534.57.2) Safaeri (does not work)
 
What versions are you running? Additionally do you have also the problem running reports from a different Ihub source?
Can't get my head around ;(
 
regards,
 
Michel
 
 
 
regards

zynapzyz

Hi Jesse,
 
I think I found the issue. It's a ssl certificate issue. I had two certificates installed in Chrome. As mentioned before in a previous ticket I tried to install an ssl certificate on my server that runs Ihub. However it did not succeed. I will pick up this issue at a later stage. However the website zcore.nl has a wildcard certificate installed which causes the problem.
 
That leaves me with the following issue:
 
www.zcore.nl runs over https because I have some data that needs to be encrypted. Because I was not able to install ssl on the Ihub server I decided to run the reports over http. However this means that everybody who visits <a data-ipb='nomediaparse' href='https://www.zcore.nl/specific_page'>https://www.zcore.nl/specific_page</a>automatically has a certificate installed in their browser and as a result is not able to run the reports anymore. 
 
I tested this scenario: In Explorer I went to <a data-ipb='nomediaparse' href='https://www.zcore.nl'>https://www.zcore.nl</a>and afterwards tried to run the report. And it freezed again (in the browser that before did not freeze). So it's defentily the certificate running on <a>https:www.zcore.nl.</a> Big question now is how to prevent this from happening? As mentioned I need the certificate on the domain. 
 
Thanks in advance,
 
Michel

zynapzyz

one more question:
 
why did you get the issue in your browsers? You haven't been visiting <a data-ipb='nomediaparse' href='https://www.zcore.nl'>https://www.zcore.nl</a>to my knowledge? 
Does this mean that everybody with a ssl certificate installed in their browser cannot see the reports?
 
Thank's again.
 
regards,
 
Michel

zynapzyz

HI Jesse,
 
I temporarily disabled the certificate on zcore.nl; Deleted all certificates from my browser (Explorer), deleted the history en run the report without any problem. I visited http:www.zcore.nl and did some browsing. After that I rerun the report without any problem. Then I enabled the certificate again which installed 2 certificates in my browser on the Intermediate Certification Authority tab:
 
- Comodo RSA Certification Authority | Addtrust External CA Root
- Comodo RSA Domain Validation Scan Server CA | Comodo RSA Certification Authority
 
Then rerun the report again and had the problem again. 
 
Conclusion. It definitely has something to do with the certificate. However it is a valid wildcard certificate. My guess is that if somebody visits a website with a wildcard certificate which gets installed in the browser, his browser would freeze (spinning cursor) when viewing reports in the ihub viewer. This because you also had the problem in some browers (that have conflicting certificate installed) and not in others. Is this an Ihub issue because it presents a possible problem for end users. Or has it something to do with the certificate, although the certificate I am using on zcore should be valid.
 
Hope you can help,
 
Michel

JFreeman

I think I didn't explain the behavior I was getting as well as I should have.
The reports themselves all loaded for me but I was having some issues with my cursor once the reports loaded which looks to be unrelated to your actual issue.
 
This also looks to confirm what you have described since I didn't have the SSL cert the reports loaded properly.
 
In order to track down the SSL issue further, I would recommend using a tool such as Fiddler or Wireshark to capture the requests from the browser to the iHub when the report isn't loading due to the SSL cert issue. You may be able to get some better insight into what is happening when the report isn't loading.

zynapzyz

Hi Jesse,
 
sorry for the confusion but I got exactly the same (i see the report but the cursor keeps spinning and the page freezes). Can you see if you have certificated loaded in your browser en try to delete them to see if that fixes the problem. At my end it did.
 
regards,
 
Michel

JFreeman

I do not see either of those certificates loaded in my browser.
Thinking back, I do not believe I visited the HTTPS portion of your site so it makes sense I did not get the certs.

zynapzyz

Hi Jesse,
 
ok, for me the problem is solved. hopefully it will not happen again with me or any other user. I will keep you updated. Tnx for your replies.
 
regards,
 
Michel

JFreeman

Alright, I'm glad to hear you have the issue solved.
 
I will keep and eye out for any additional updates.