Ticket #7793: 7793.r9046.diff

Index: wp-admin/update-links.php
===================================================================
--- wp-admin/update-links.php   (revision 9046)
+++ wp-admin/update-links.php   (working copy)
@@ -38,6 +38,9 @@
 
 $response = wp_remote_get('http://api.pingomatic.com/updated-batch/', $options);
 
+if ( is_wp_error( $response ) )
+       wp_die(__('Request Failed.'));
+
 if ( $response['response']['code'] != 200 )
        wp_die(__('Request Failed.'));
 
Index: wp-includes/comment.php
===================================================================
--- wp-includes/comment.php     (revision 9046)
+++ wp-includes/comment.php     (working copy)
@@ -1316,7 +1316,10 @@
                'excerpt' => urlencode($excerpt)
        );
 
-       wp_remote_post($trackback_url, $options);
+       $response = wp_remote_post($trackback_url, $options);
+       
+       if ( is_wp_error( $response ) )
+               return;
 
        $tb_url = addslashes( $trackback_url );
        $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', '$tb_url') WHERE ID = %d", $ID) );
Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php   (revision 9046)
+++ wp-includes/functions.php   (working copy)
@@ -1039,6 +1039,9 @@
 
        $response = wp_remote_request($url, $options);
 
+       if ( is_wp_error( $response ) )
+               return false;
+
        $headers = wp_remote_retrieve_headers( $response );
        if ( false == $file_path )
                return $headers;
@@ -1072,6 +1075,10 @@
  */
 function wp_get_http_headers( $url, $deprecated = false ) {
        $response = wp_remote_head( $url );
+
+       if ( is_wp_error( $response ) )
+               return false;
+
        return wp_remote_retrieve_headers( $response );
 }
 
@@ -1240,11 +1247,9 @@
  * @uses wp_remote_get()
  *
  * @param string $uri URI/URL of web page to retrieve.
- * @return string HTTP content.
+ * @return bool|string HTTP content. False on failure.
  */
 function wp_remote_fopen( $uri ) {
-       // parse url() should not be used for validation of URLs.
-       // Keeping anyway, since the Filter extension is not available on all servers.
        $parsed_url = @parse_url( $uri );
 
        if ( !$parsed_url || !is_array( $parsed_url ) )
@@ -1255,6 +1260,9 @@
 
        $response = wp_remote_get( $uri, $options );
 
+       if ( is_wp_error( $response ) )
+               return false;
+
        return $response['body'];
 }