} catch(e){}
// Allow custom headers/mimetypes
- if ( s.beforeSend )
- s.beforeSend(xml);
-
+ if ( s.beforeSend && s.beforeSend(xml, s) === false ) {
+ // cleanup active request counter
+ s.global && jQuery.active--;
+ // close opended socket
+ xml.abort();
+ return false;
+ }
+
if ( s.global )
jQuery.event.trigger("ajaxSend", [xml, s]);