Fbml.refreshImgSrc

From Facebook Developers Wiki

Contents 1 Description 2 Parameters 3 Example Return XML 4 Response 5 Error Codes 6 Notes

[edit] Description

Fetches and re-caches the image stored at the given URL, for use in images published to non-canvas pages via the API (e.g. to user profiles via profile.setFBML, or to news feed via feed.publishActionOfUser). See the FBML documentation for a description of the markup and its role in various contexts.
Note: Despite our previous announcement, this function is no longer going to be deprecated.

[edit] Parameters

Required	Name	Type	Description
required	api_key	string	The application key associated with the calling application.
	call_id	float	The request's sequence number. Each successive call for any session must use a sequence number greater than the last. We suggest using the current time in milliseconds, such as PHP's microtime(true) function.
	sig	string	An MD5 hash of the current request and your secret key, as described in the authentication guide.
	v	string	This must be set to 1.0 to use this version of the API.
	url	string	The absolute URL from which to refresh the image.
optional	format	string	Desired response format. Either XML (default) or JSON.
	callback	string	Name of a function to call. This is primarily to enable cross-domain JavaScript requests using the <script> tag, also known as JSONP, and works with both the XML and JSON formats. The function will be called with the response passed as the parameter.

[edit] Example Return XML

<?xml version="1.0" encoding="UTF-8"?> <fbml_refreshImgSrc_response xmlns="http://api.facebook.com/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://api.facebook.com/1.0/ http://api.facebook.com/1.0/facebook.xsd"> 1 </fbml_refreshImgSrc_response>

[edit] Response

This method returns 1 if Facebook found a cached version of your image and successfully refreshed the image. It returns a blank response if Facebook was unable to find any previously cached version to refresh, or the image was unable to be re-fetched from your site and cached successfully. In such instances, whatever images were cached before remain as they were cached.

[edit] Error Codes

Code	Description
1	An unknown error occurred. Please resubmit the request.
2	The service is not available at this time.
4	The application has reached the maximum number of requests allowed. More requests are allowed once the time window has completed.
5	The request came from a remote address not allowed by this application.
101	The API key submitted is not associated with any known application.
102	The session key was improperly submitted or has reached its timeout. Direct the user to log in again to obtain another key.
103	The submitted call_id was not greater than the previous call_id for this session.
104	Incorrect signature.

[edit] Notes

• This method no longer requires a session_key.