rlensen

I think I got it working, with this snippet:

add_action( 'bbp_new_reply_post_extras', 'cf_purge_cache_reply' );
add_action( 'bbp_edit_reply_post_extras', 'cf_purge_cache_reply' );
add_action( 'wp_trash_post', 'cf_purge_cache_reply' );

add_action ('bbp_new_topic_post_extras' , 'cf_purge_cache_topic' ) ;
add_action ('bbp_edit_topic_post_extras' , 'cf_purge_cache_topic' ) ;

add_action ('bbp_new_forum_post_extras' , 'cf_purge_cache_forum' ) ;
add_action ('bbp_edit_forum_post_extras' , 'cf_purge_cache_forum' ) ;

function cf_purge_cache_forum ($forum_id) {
	// Bail if no forum
    $forum_id = get_post( $forum_id );
    if ( empty( $forum_id ) )
        return;
	$url = get_permalink($forum_id);
	if($url) {
		do_action("swcfpc_purge_cache",  array( $url) );		
	}
}
	
function cf_purge_cache_reply ($reply_id) {
	// Bail if no post
    $reply_id = get_post( $reply_id );
    if ( empty( $reply_id ) )
        return;
	if (function_exists ('bbp_get_reply_topic_id')){
		$topic_id = bbp_get_reply_topic_id ($reply_id) ;
		cf_purge_cache_topic ($topic_id) ;
		$forum_id = bbp_get_topic_forum_id($topic_id);
		cf_purge_cache_forum($forum_id);
	}
}

function cf_purge_cache_topic ($topic_id) {

	$topic_id = get_post( $topic_id );
    if ( empty( $topic_id ) )
        return;
	
	$url = get_permalink($topic_id);
	if($url) {
		do_action("swcfpc_purge_cache",  array( $url) );		
	}
	
}