Ticket #24598: 24598.2.diff

src/wp-includes/class-wp-http-ixr-client.php

@@ -64 +64 @@
                 );
 
                 // Merge Custom headers ala #8145
-                foreach ( $this->headers as $header => $value )
+                foreach ( $this->headers as $header => $value ) {
                         $args['headers'][$header] = $value;
+                }
 
-                if ( $this->timeout !== false )
+                // Filter headers for other custom data
+                $args['headers'] = apply_filters( 'wp_http_ixr_client_headers', $args['headers'] );
+
+                if ( $this->timeout !== false ) {
                         $args['timeout'] = $this->timeout;
+                }
 
                 // Now send the request
-                if ( $this->debug )
+                if ( $this->debug ) {
                         echo '<pre class="ixr_request">' . htmlspecialchars($xml) . "\n</pre>\n\n";
+                }
 
                 $response = wp_remote_post($url, $args);
 
@@ -88 +94 @@
                         return false;
                 }
 
-                if ( $this->debug )
+                if ( $this->debug ) {
                         echo '<pre class="ixr_response">' . htmlspecialchars( wp_remote_retrieve_body( $response ) ) . "\n</pre>\n\n";
+                }
 
                 // Now parse what we've got back
                 $this->message = new IXR_Message( wp_remote_retrieve_body( $response ) );