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Posted to dev@cloudstack.apache.org by Sergey Levitskiy <Se...@autodesk.com> on 2016/08/17 20:42:16 UTC

AJAX video stream for VM console is broken in Chrome

Has anyone observed issues in using Chrome for VM console sessions?  Since recently we have had reports from many but not all users seeing white blank space where VM screen output goes. Other parts of the window e.g. Ctrl-Alt-Del button works just fine so it seems that AJAX stream is broken in Chrome although no other sites were reported with the same issues.
I attached a screenshot of console window. Has anyone seen this issue or knows if there is a workaround except using a different browser?

Re: AJAX video stream for VM console is broken in Chrome

Posted by Wei ZHOU <us...@gmail.com>.
Hi Sergey,

Could you check if disk is full in console proxy vm?

-Wei

2016-08-17 22:42 GMT+02:00 Sergey Levitskiy <Se...@autodesk.com>:

> Has anyone observed issues in using Chrome for VM console sessions?  Since
> recently we have had reports from many but not all users seeing white blank
> space where VM screen output goes. Other parts of the window e.g.
> Ctrl-Alt-Del button works just fine so it seems that AJAX stream is broken
> in Chrome although no other sites were reported with the same issues.
>
> I attached a screenshot of console window. Has anyone seen this issue or
> knows if there is a workaround except using a different browser?
>
>
>
>
>
>
>

Re: AJAX video stream for VM console is broken in Chrome

Posted by Sergey Levitskiy <Se...@autodesk.com>.
FYI. Issue is fixed in recently release Chrome v 53. After the update no more WSOD ‘white square of death’


On 8/19/16, 1:51 AM, "Rohit Yadav" <ro...@shapeblue.com> wrote:

    
    Hi Sergey,
    
    
    Since the same URL open perfectly fine in a tab, there must be something in your installation of Chrome blocking elements in the pop-up. Can you try to upgrade to latest Chrome, and then enable pop-ups in Chrome (follow something like: http://www.wikihow.com/Allow-Pop-ups-on-Google-Chrome).
    
    
    You also are using ssl enabled console proxy, but the certificate is valid as per Chrome so it should not block any of the iframe elements but in one of the screenshots the URL call to the https based console proxy URL did not load or was blocked in the popup (which is where you don't see the certificate in the security tab). Based on the screenshots, it looks like Chrome hit one error. Can you share what error was reported on the console. With the console popup opened, open chrome developer tools and click on 'Console' tab and share what error you got there.
    
    
    Regards.
    
    
    
    ________________________________
    From: Sergey Levitskiy <Se...@autodesk.com>
    Sent: 19 August 2016 10:21:10
    To: dev@cloudstack.apache.org
    Subject: Re: AJAX video stream for VM console is broken in Chrome
    
    Hi Rohit,
    As it turned out ACS 4.9 is fine and issue is only in ACP/CCP 4.7 which I believe is pretty close to ACS 4.7. Interestingly enough if I copy console URL and open a tab in main Chrome window it works just fine. I took 3 more screenshots of Chrome Development tools to compare. It looks like Chrome for whatever reason block returned Ajax stream to the popup window after the very first frame.
    
    https://autodesk.box.com/s/psudrtjq09ke3p6t08ft2700l96govkg
    https://autodesk.box.com/s/gn8gd1ieqmsq9yx1fzdopj4dycp3gm0u
    https://autodesk.box.com/s/5sklr6sli7pgy1ar26l3vps0n8pzoa60
    
    Thanks,
    Sergey
    
    
    
    On 8/18/16, 1:37 AM, "Rohit Yadav" <ro...@shapeblue.com> wrote:
    
        Hi Sergey,
    
    
        Can you open console in Chrome and then click on Tools-> Developer Tools. It would open a separate window from where you can debug what's going wrong. In the developer tools window, head over to the console tab and share if you're seeing any errors. Head over to the network tab, where you can ajax? and ajaximg? url requests being made, if you're not seeing any such URL requests/activities perhaps there was an issue with loading resources from the embedded iframe. To debug this, head over to the 'Elements' tab, click on iframset and copy the iframe src url. Try to open this URL in Chrome in a separate tab. It might fail to load due to SSL/TLS certificate error or any other network configuration.
    
    
        Can you also share your OS details, Chrome version and CloudStack version. Are you using SSL certificates with console proxy? If so can you check that they are valid and resolve to a valid hostname/ip for which the certificate was generated and/or fix as necessary. If you're using a custom CA, make sure to import the root CA certificate in Chrome.
    
    
        Regards.
    
        rohit.yadav@shapeblue.com
        www.shapeblue.com<http://www.shapeblue.com>
        53 Chandos Place, Covent Garden, London  WC2N 4HSUK
        @shapeblue
    
    
    
    
    
    
    rohit.yadav@shapeblue.com 
    www.shapeblue.com
    53 Chandos Place, Covent Garden, London  WC2N 4HSUK
    @shapeblue

Re: AJAX video stream for VM console is broken in Chrome

Posted by Rohit Yadav <ro...@shapeblue.com>.
Hi Sergey,


Since the same URL open perfectly fine in a tab, there must be something in your installation of Chrome blocking elements in the pop-up. Can you try to upgrade to latest Chrome, and then enable pop-ups in Chrome (follow something like: http://www.wikihow.com/Allow-Pop-ups-on-Google-Chrome).


You also are using ssl enabled console proxy, but the certificate is valid as per Chrome so it should not block any of the iframe elements but in one of the screenshots the URL call to the https based console proxy URL did not load or was blocked in the popup (which is where you don't see the certificate in the security tab). Based on the screenshots, it looks like Chrome hit one error. Can you share what error was reported on the console. With the console popup opened, open chrome developer tools and click on 'Console' tab and share what error you got there.


Regards.



________________________________
From: Sergey Levitskiy <Se...@autodesk.com>
Sent: 19 August 2016 10:21:10
To: dev@cloudstack.apache.org
Subject: Re: AJAX video stream for VM console is broken in Chrome

Hi Rohit,
As it turned out ACS 4.9 is fine and issue is only in ACP/CCP 4.7 which I believe is pretty close to ACS 4.7. Interestingly enough if I copy console URL and open a tab in main Chrome window it works just fine. I took 3 more screenshots of Chrome Development tools to compare. It looks like Chrome for whatever reason block returned Ajax stream to the popup window after the very first frame.

https://autodesk.box.com/s/psudrtjq09ke3p6t08ft2700l96govkg
https://autodesk.box.com/s/gn8gd1ieqmsq9yx1fzdopj4dycp3gm0u
https://autodesk.box.com/s/5sklr6sli7pgy1ar26l3vps0n8pzoa60

Thanks,
Sergey



On 8/18/16, 1:37 AM, "Rohit Yadav" <ro...@shapeblue.com> wrote:

    Hi Sergey,


    Can you open console in Chrome and then click on Tools-> Developer Tools. It would open a separate window from where you can debug what's going wrong. In the developer tools window, head over to the console tab and share if you're seeing any errors. Head over to the network tab, where you can ajax? and ajaximg? url requests being made, if you're not seeing any such URL requests/activities perhaps there was an issue with loading resources from the embedded iframe. To debug this, head over to the 'Elements' tab, click on iframset and copy the iframe src url. Try to open this URL in Chrome in a separate tab. It might fail to load due to SSL/TLS certificate error or any other network configuration.


    Can you also share your OS details, Chrome version and CloudStack version. Are you using SSL certificates with console proxy? If so can you check that they are valid and resolve to a valid hostname/ip for which the certificate was generated and/or fix as necessary. If you're using a custom CA, make sure to import the root CA certificate in Chrome.


    Regards.

    rohit.yadav@shapeblue.com
    www.shapeblue.com<http://www.shapeblue.com>
    53 Chandos Place, Covent Garden, London  WC2N 4HSUK
    @shapeblue






rohit.yadav@shapeblue.com 
www.shapeblue.com
53 Chandos Place, Covent Garden, London  WC2N 4HSUK
@shapeblue

Re: AJAX video stream for VM console is broken in Chrome

Posted by Sergey Levitskiy <Se...@autodesk.com>.
Hi Rohit,
As it turned out ACS 4.9 is fine and issue is only in ACP/CCP 4.7 which I believe is pretty close to ACS 4.7. Interestingly enough if I copy console URL and open a tab in main Chrome window it works just fine. I took 3 more screenshots of Chrome Development tools to compare. It looks like Chrome for whatever reason block returned Ajax stream to the popup window after the very first frame. 

https://autodesk.box.com/s/psudrtjq09ke3p6t08ft2700l96govkg
https://autodesk.box.com/s/gn8gd1ieqmsq9yx1fzdopj4dycp3gm0u
https://autodesk.box.com/s/5sklr6sli7pgy1ar26l3vps0n8pzoa60

Thanks,
Sergey



On 8/18/16, 1:37 AM, "Rohit Yadav" <ro...@shapeblue.com> wrote:

    Hi Sergey,
    
    
    Can you open console in Chrome and then click on Tools-> Developer Tools. It would open a separate window from where you can debug what's going wrong. In the developer tools window, head over to the console tab and share if you're seeing any errors. Head over to the network tab, where you can ajax? and ajaximg? url requests being made, if you're not seeing any such URL requests/activities perhaps there was an issue with loading resources from the embedded iframe. To debug this, head over to the 'Elements' tab, click on iframset and copy the iframe src url. Try to open this URL in Chrome in a separate tab. It might fail to load due to SSL/TLS certificate error or any other network configuration.
    
    
    Can you also share your OS details, Chrome version and CloudStack version. Are you using SSL certificates with console proxy? If so can you check that they are valid and resolve to a valid hostname/ip for which the certificate was generated and/or fix as necessary. If you're using a custom CA, make sure to import the root CA certificate in Chrome.
    
    
    Regards.
    
    rohit.yadav@shapeblue.com 
    www.shapeblue.com
    53 Chandos Place, Covent Garden, London  WC2N 4HSUK
    @shapeblue

Re: AJAX video stream for VM console is broken in Chrome

Posted by Rohit Yadav <ro...@shapeblue.com>.
Hi Sergey,


Can you open console in Chrome and then click on Tools-> Developer Tools. It would open a separate window from where you can debug what's going wrong. In the developer tools window, head over to the console tab and share if you're seeing any errors. Head over to the network tab, where you can ajax? and ajaximg? url requests being made, if you're not seeing any such URL requests/activities perhaps there was an issue with loading resources from the embedded iframe. To debug this, head over to the 'Elements' tab, click on iframset and copy the iframe src url. Try to open this URL in Chrome in a separate tab. It might fail to load due to SSL/TLS certificate error or any other network configuration.


Can you also share your OS details, Chrome version and CloudStack version. Are you using SSL certificates with console proxy? If so can you check that they are valid and resolve to a valid hostname/ip for which the certificate was generated and/or fix as necessary. If you're using a custom CA, make sure to import the root CA certificate in Chrome.


Regards.

rohit.yadav@shapeblue.com 
www.shapeblue.com
53 Chandos Place, Covent Garden, London  WC2N 4HSUK
@shapeblue

Re: AJAX video stream for VM console is broken in Chrome

Posted by Sergey Levitskiy <Se...@autodesk.com>.
Yes, latest Chrome. No errors in console cloud.log. A parallel request from the same client using Firefox, Safari or IE works. It is obviously Chrome related but I am wondering if it is due to a way how Cloudstack sends video stream. Other sites seem to be OK in this regard accessed by Chrome from the same client.

On 8/17/16, 10:05 PM, "Rajani Karuturi" <ra...@apache.org> wrote:

    It can be browser specific. In the past, similar issues were
    reported on IE8/9. Is it the latest chrome version?
    
    It may be performace/bandwidth related. Do you see this when
    there are more consoles open?
    Do you see any errors in cloud.log on console proxy vm?
    
    ~ Rajani
    http://cloudplatform.accelerite.com/
    
    On August 18, 2016 at 2:16 AM, Sergey Levitskiy
    (Sergey.Levitskiy@autodesk.com) wrote:
    The screenshot is here:
    https://autodesk.box.com/s/ry9xe5ugt8h9f3b9sr0ddv4qnsp9v8d8
    
    From: Sergey Levitskiy <Se...@autodesk.com>
    Reply-To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
    Date: Wednesday, August 17, 2016 at 1:42 PM
    To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
    Subject: AJAX video stream for VM console is broken in Chrome
    
    Has anyone observed issues in using Chrome for VM console
    sessions? Since recently we have had reports from many but not
    all users seeing white blank space where VM screen output goes.
    Other parts of the window e.g. Ctrl-Alt-Del button works just
    fine so it seems that AJAX stream is broken in Chrome although no
    other sites were reported with the same issues.
    I attached a screenshot of console window. Has anyone seen this
    issue or knows if there is a workaround except using a different
    browser?

Re: AJAX video stream for VM console is broken in Chrome

Posted by Rajani Karuturi <ra...@apache.org>.
It can be browser specific. In the past, similar issues were
reported on IE8/9. Is it the latest chrome version?

It may be performace/bandwidth related. Do you see this when
there are more consoles open?
Do you see any errors in cloud.log on console proxy vm?

~ Rajani
http://cloudplatform.accelerite.com/

On August 18, 2016 at 2:16 AM, Sergey Levitskiy
(Sergey.Levitskiy@autodesk.com) wrote:
The screenshot is here:
https://autodesk.box.com/s/ry9xe5ugt8h9f3b9sr0ddv4qnsp9v8d8

From: Sergey Levitskiy <Se...@autodesk.com>
Reply-To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
Date: Wednesday, August 17, 2016 at 1:42 PM
To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
Subject: AJAX video stream for VM console is broken in Chrome

Has anyone observed issues in using Chrome for VM console
sessions? Since recently we have had reports from many but not
all users seeing white blank space where VM screen output goes.
Other parts of the window e.g. Ctrl-Alt-Del button works just
fine so it seems that AJAX stream is broken in Chrome although no
other sites were reported with the same issues.
I attached a screenshot of console window. Has anyone seen this
issue or knows if there is a workaround except using a different
browser?

Re: AJAX video stream for VM console is broken in Chrome

Posted by Sergey Levitskiy <Se...@autodesk.com>.
The screenshot is here:
https://autodesk.box.com/s/ry9xe5ugt8h9f3b9sr0ddv4qnsp9v8d8


From: Sergey Levitskiy <Se...@autodesk.com>
Reply-To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
Date: Wednesday, August 17, 2016 at 1:42 PM
To: "dev@cloudstack.apache.org" <de...@cloudstack.apache.org>
Subject: AJAX video stream for VM console is broken in Chrome

Has anyone observed issues in using Chrome for VM console sessions?  Since recently we have had reports from many but not all users seeing white blank space where VM screen output goes. Other parts of the window e.g. Ctrl-Alt-Del button works just fine so it seems that AJAX stream is broken in Chrome although no other sites were reported with the same issues.
I attached a screenshot of console window. Has anyone seen this issue or knows if there is a workaround except using a different browser?