Question about pubsubhubbub

Skip to first unread message

Sep 24, 2014, 7:36:48 AM9/24/14
I am a php startup,

trying to test pubsubhubbub on local by using the example code on ,

I have following questions,
  1. I develop a localhost .php file which can write the present time to my local laptop as a ".txt file" and set it as "callback_url". Every time I run "subscriber_example" the hub will access "callback_url" and record the time to my local laptop. But every time I try to run "publisher_example", nothing is recorded in my localhost .txt file. It seems like the publish isn't success, what should I do with this problem?
  2. Is it correct that every time we run publish_example, the hub will access the callback_url whatever there is new update?
  3. Is "" a realtime hub that whenever I publish new update the hub will notify the subscriber and access the callback_url ?
The attachments are my test files, thanks for help !

P.S hello.php is a easy php file that I use to set as callback_url, I use localtunnel to set my websever port to a accessible URL 

Julien Genestoux

Sep 24, 2014, 8:02:21 AM9/24/14
to Pubsubhubbub

Are you trying to subscribe to feeds that are PubSubHubbub enabled or are you trying to publish PubSubHubbub enabled feeds?


You received this message because you are subscribed to the Google Groups "Pubsubhubbub" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
For more options, visit

Sep 24, 2014, 11:58:40 PM9/24/14
Dear Julien

I am trying to subscribe to a specific feeds(made up by google feedburner), and trying to ping the hub and publish the update.

so i did the following instruction(I use for my test)

1. I run subscribe_demo.php to subscribe and set the feed as, set my callback_url as the localhost hello.php file.

2. I run the publish_demo.php to ping the hub and wish to get a record time in my localhost(I thought it will access callback_url)

I thought every time I run publish_example and publish updates, the hub will access to the callback_url and record the time in my localhost hello.php file.

But it seems that i was wrong about this.

To make my question clear, if i want to try out the whole process of pubsubhubbub what should I do ?

I can't even try it on the debug function of

Sep 25, 2014, 12:56:13 AM9/25/14
Dear Julien

I create a blog for test, and use google feed burner to make it a PubSubHubbub enabled feed.

What should I do to use Google PubSubHubbub Hub's debug function to run the whole process ?

The attachment is the Subscribe/Publish debug function.

Did I fill in anything wrong in the blanks ?

How do I know if the hub access to callback_url when the publisher ping the hub for update ? 

Julien Genestoux

Sep 26, 2014, 8:25:51 AM9/26/14
to Pubsubhubbub
If you're subscribing to a feedburner feed, it's pointless to ping Google (the publisher of the feed should do that, not you!).

Then, if you have problem with the Google hub, I can't answer, because I run a completely different hub =) Google will have to answer your questions!



Peter Chen

Sep 29, 2014, 5:09:27 AM9/29/14
Dear Julien

I just have my problem fixed,

I found that my callback url wasn't verified.

That's why I never get informed by the hub....

Thx for your help !
Reply all
Reply to author
0 new messages