This page last changed on Sep 08, 2011 by pwatson.

The RSS feed macro embeds an RSS feed on a page. It can display the contents of external feeds, or of internal feeds generated by Confluence. To display blog posts or to list recently updated pages in a space, use the Feed Builder to create an internal feed, then render it using this macro.

CAUTION: Including unknown HTML inside a webpage is dangerous.

HTML inside an RSS feed can contain active scripting components. This means that it would be possible for a malicious attacker to present a user of your site with script that their web browser would believe came from you. Such code could be used, for example, to steal a user's authentication cookie and give the attacker their Confluence login password.

The RSS macro will only be available if it has been enabled by your Confluence administrator. Also, your Confluence Administrator can define a whitelist of trusted URLs. You will see an error message on the Confluence page, if the included URL is not in the whitelist.

On this page:

Usage with the Macro Browser

To insert the RSS feed macro into a page using the Macro Browser,

  1. In the Confluence editor, choose Insert > Other Macros.
  2. Find and select the required macro.

Once you've found the RSS feed macro and have added the required parameter values, click 'insert' to add it to your page.

Usage with the Wiki Markup Editor

Use the Wiki Markup editor to edit the page and insert the RSS macro. Replace the '

http://www.example.com/rss/

' URL with your own feed link in this example:

{rss:url=http://www.example.com/rss/}

Parameters

When editing, you can click on the macro placeholder and choose Edit to display the parameters for this macro in the Macro Browser.

Parameters are options that you can set for Confluence macros to control the content or format of the macro output. The table below lists parameters for this macro that can be set in the Macro Browser.

Parameter

Required?

Default

Description

RSS Feed URL
(url)

yes

none

The URL of the RSS feed link you want to show.

Maximum Number of Entries
(max)

no

15

Limit the number of entries displayed.

Show Item Titles Only
(showTitlesOnly)

no

false

Show only the titles of the news items, not the content.

Show Name/Title of RSS Feed
(titleBar)

no

true

Hide the feeds title bar.

Examples

1. Limit the number of entries displayed

{rss:url=http://host.com/rss.xml|max=5}

2. Show only the RSS feed titles

{rss:url=http://host.com/rss.xml|showTitlesOnly=true}

3. Hide the feeds titlebar

{rss:url=http://host.com/rss.xml|titleBar=false}

Working Example

What you need to type:

{rss:url=http://www.abc.net.au/news/feed/51120/rss.xml|max=5|showTitlesOnly=true}

What you will get:

Error rendering macro 'rss' : null

How Up to Date is the Feed?

By default, the RSS Feed macro caches the feed results for 60 minutes before fetching the data again.

If you wish to change the default caching, use the {cache} macro to define how often the RSS Feed macro fetches the feed updates. You may want to set the cache to a longer period, so that your page loads faster. Or you may want to retrieve feed results more often, if you need to see the updates sooner. You will need to install the Cache plugin page onto your Confluence site.

To enable caching:

  1. Using the Confluence Repository, install the 'Scripting Plugin' and the 'Utilities Plugin'.
  2. For each RSS macro that you wish to cache, surround your RSS macro with a Cache macro. For example, to cache feeds for 30 minutes:

    {cache:refresh=30m}
    {rss:url=http://rss.news.yahoo.com/rss/stocks|max=5}
    {cache}

    The Cache plugin page provides more information on customising the cache behaviour.

What Happens to a Page Containing a Disallowed URL?

Your Confluence Administrator can set up a whitelist of allowed URLs. If this is the case, you may see an error on the pages which contain the RSS macro.

A user can add the RSS macro or the HTML-include macro to a Confluence page. The macro code includes a URL from which the content is drawn. When the page is displayed, Confluence will check the URL against the whitelist. If the URL is not allowed, Confluence will display an error message on the page.

The error message says that Confluence "could not access the content at the URL because it is not from an allowed source" and displays the offending URL. If the person viewing the page is a Confluence Administrator, they will also see a link to the Administration page where they can configure the URL whitelist.

Here is an example of the error message, including the link shown only to Confluence Administrators:

Here is an example of the error message, but without the link.

Authentication

Private Feeds from External Sites

RSS feeds which require authentication cannot be accessed using the RSS Macro.

Accessing Internal HTTPS Feeds

This applies only to Confluence instances which have enabled HTTPS for all content. If your site is fully HTTPS, the RSS macro cannot access internal feeds. To enable the RSS macro to access internal feeds without affecting your HTTPS setup, enable local-only HTTP access:

  1. Shut down Confluence.
  2. Consult the SSL guide to enable HTTP access to Confluence. You'll want to ensure that you have an HTTP connector and an SSL connector, both commented in. This means that Confluence will be accessible via both HTTP and HTTPS. However, you should not have a redirect port, nor rules in web.xml to redirect all traffic.
  3. Instead of using web.xml to redirect traffic, insert a firewall rule to redirect all HTTP requests not from the Confluence server to the equivalent HTTPS URL. This ensures that users will only be able to access Confluence via HTTPS, as intended. If you have still left HTTP access for attachments enabled (to avoid the IE download bug) you must selectively enable those URLS as well.
  4. Modify your Confluence RSS macro feed link to use the HTTP URL, and restart Confluence.

Related Topics

Subscribing to RSS Feeds within Confluence 
Watching Changes
Working with Macros
Configuring a URL Whitelist

Return to the Confluence User's Guide.

Document generated by Confluence on Sep 19, 2011 02:36