Comments on: Ajax based streaming and progress monitor

By: Silver Moon

Silver Moon — Tue, 02 May 2023 04:36:54 +0000

In reply to Jay.

you need to debug both the server and client separately. first check if the server is outputting the progress data at correct time intervals or not.

Next check your ajax code and inspect with browser inspector to see what response is the browser getting.

There can be issues like server side buffering.

By: Jay

Jay — Wed, 15 Mar 2017 00:58:40 +0000

Hi!

I tried this in my local laravel development and it works great.
But when I deployed it to my production server (LEMP)… it does not work anymore.. is there a specific configuration needed for LEMP in order for this to work?

Thanks.

By: Victor Gen

Victor Gen — Fri, 10 Jun 2016 23:42:51 +0000

Hi silver, nice script! Have you observed how it behaves on slow internet like mobile networks? It fails on JSON.parse line and it looks like the new_response doesn’t do the job. I’m wondering if there’s better way of consuming incremental json feed over sloooooow internet like 3g mobile networks. Though, it works fine when you switch to WIFI.

By: Dimitar Ivanov

Dimitar Ivanov — Tue, 02 Jun 2015 18:55:00 +0000

Silver, your approach is nice, however you may find useful to see my blog post on how to display task progress using the HTML progress element and ProgressEvent W3C recommendation: http://zinoui.com/blog/ajax-request-progress-bar

By: Carlos Vinicius

Carlos Vinicius — Wed, 08 Oct 2014 15:28:00 +0000

In reply to Gunstick. Make sure your Apache installation is properly configured to support the `text/octet-stream` content type.

By: Gunstick

Gunstick — Sun, 01 Sep 2013 20:27:00 +0000

It does not work if you just use it on a standard apache/php installation. apache seems to buffer everything until the php code is done, ignoring any flush or no-cache.

By: Timmaeh

Timmaeh — Tue, 02 Jul 2013 11:31:00 +0000

I’ve been working on this now and updated the script, so it works with and without heavy load. I’m trying to implement a fallback for IE, will post an update here ^^

By: Silver Moon

Silver Moon — Wed, 26 Jun 2013 16:01:00 +0000

In reply to 4esn0k.

The progress event object as mentioned here
https://dvcs.w3.org/hg/progress/raw-file/tip/Overview.html

provides only the length of the data loaded and the total length to be loaded.

can it be used to read server response in chunks to evaluate the progress of the server side process ?

By: 4esn0k

4esn0k — Wed, 26 Jun 2013 11:38:00 +0000

>> So it still remains a question if this is really a feature or just something by chance. And whether would it be there always.
Did you read a section about “progress” event in the spec?

By: Silver Moon

Silver Moon — Fri, 08 Mar 2013 02:51:00 +0000

In reply to pclem. yes, it works on ie10+ i updated the demo. on browsers not supporting the feature, you should see the progressbar at 100% mark once the request completes.

By: pclem

pclem — Thu, 07 Mar 2013 15:39:00 +0000

For the record, this does NOT work in IE 8. None of the progress messages are shown, and it doesn’t even indicate that the request is complete when all of the messages have been received.

By: Silver Moon

Silver Moon — Thu, 07 Mar 2013 14:51:00 +0000

In reply to roryh.

probably ie 10 onwards has support for this.

check this msdn blog post for more information

http://blogs.msdn.com/b/ieinternals/archive/2010/04/06/comet-streaming-in-internet-explorer-with-xmlhttprequest-and-xdomainrequest.aspx

By: roryh

roryh — Thu, 07 Mar 2013 14:06:00 +0000

Hmmm. Microsoft claims this is not possible in IE :-/

By: roryh

roryh — Thu, 07 Mar 2013 14:02:00 +0000

Any idea what versions of Ie support this?