Re: [ldm-users] 20131112: rtstats cumulative summary/graphs

• To: Blair Trosper <blair.trosper@xxxxxxxxxxxxxxxxxxx>
• Subject: Re: [ldm-users] 20131112: rtstats cumulative summary/graphs
• From: Ryan Hickman <ryan@xxxxxxxxxxxxxxxx>
• Date: Wed, 13 Nov 2013 06:10:07 +0000

I would venture a guess that this is because the content (the GIF) and the
closing boundary ("---ThisRandomString---") are not separated by a carriage
return/newline.

As for Chrome's reaction to the server's multipart/x-mixed-replace
response, you'll notice a "canceled" request under the Network tab in the
Developer Tools. I assume this is because WebKit could not locate the
closing ---ThisRandomString--- boundary due to what I mentioned above. Also
notice "Resource interpreted as Document but transferred with MIME type
multipart/x-mixed-replace: "
http://www.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?chicago-il-1.ldm.updraft.us+GRAPH"."in
the Console.

Chrome and Safari for iOS lack full support for multipart/x-mixed-replace,
thus why they don't parse the GIF and also leave the boundaries.


On Tue, Nov 12, 2013 at 8:41 PM, Blair Trosper <
blair.trosper@xxxxxxxxxxxxxxxxxxx> wrote:

> I've always lived and breathed in Chrome, and I remember this working fine
> in the recent past.  If I were to guess, I would say Chrome 30, which came
> out in the last few months, may have broken it.
>
> Curiously, it works fine in Safari on my MacBook, but not in Chrome...so
> the problem may be independent of WebKit itself...
>
>
> On Tue, Nov 12, 2013 at 2:14 PM, Tom Yoksas <yoksas@xxxxxxxxxxxxxxxx>wrote:
>
>>
>> Hi Blair,
>>
>> re:
>> >In the online interface to RTSTATS, both the "cumulative volume summary"
>> >and its graph counterpart links are broken (seem to do nothing).
>> >
>> >This holds true for real time stats by host as well as summary stats by
>> >host.
>> >
>> >Example:
>> >
>> http://www.unidata.ucar.edu/cgi-bin/rtstats/siteindex?chicago-il-1.ldm.updraft.us
>> >
>> >If you click the summary graph link, you're pointed to this URL:
>> >
>> http://www.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?chicago-il-1.ldm
>> > .updraft.us+GRAPH
>> >
>> >When I watch the network activity in Chrome's developer tools, nothing
>> >looks amiss, but the page is empty, and the few hundred bytes that are
>> >returned by the server are just the headers themselves...no actual
>> content
>> >to fill out the "forecasted" (pardon the pun) multipart/x-mixed-replace
>> >content-type.
>>
>> The failure appears to be dependent on the browser one is using.  I am
>> able to successfully display both the summary text and graphic products
>> referenced above in Firefox and Opera and yet unsuccessful in Chrome
>> (v31.0.1650.48 m) and Internet Explorer (v10.0.10) on my Windows 7
>> laptop and in Chrome on my Android 4.3 Nexus 7 tablet.  Interestingly,
>> I am able to display the textual output in Chrome and Safari on my IOS
>> 6 iPod Touch, but not the graphic.
>>
>> Why there is a browser-related failure will need to be investigated.
>>
>> Cheers,
>>
>> Tom
>> --
>>
>> +----------------------------------------------------------------------------+
>> * Tom Yoksas                                            UCAR Unidata
>> Program *
>> * (303) 497-8642 (last resort)                                 P.O. Box
>> 3000 *
>> * yoksas@xxxxxxxxxxxxxxxx                                  Boulder, CO
>> 80307 *
>> * Unidata WWW Service
>> http://www.unidata.ucar.edu/*
>>
>> +----------------------------------------------------------------------------+
>>
>> _______________________________________________
>> ldm-users mailing list
>> ldm-users@xxxxxxxxxxxxxxxx
>> For list information or to unsubscribe,  visit:
>> http://www.unidata.ucar.edu/mailing_lists/
>>
>
>
>
> --
>
>  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *
>  *  *  *  *  *  *  *  *
> Blair Trosper
>   Weather Data / Updraft Networks
>   NOC:  469-844-5440
> *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *
>  *  *  *  *  *  *  *  *
>
> _______________________________________________
> ldm-users mailing list
> ldm-users@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe,  visit:
> http://www.unidata.ucar.edu/mailing_lists/
>

• References:
  • [ldm-users] rtstats cumulative summary/graphs
    • From: Blair Trosper
  • [ldm-users] 20131112: rtstats cumulative summary/graphs
    • From: Tom Yoksas
  • Re: [ldm-users] 20131112: rtstats cumulative summary/graphs
    • From: Blair Trosper