1 files changed, 24 insertions, 6 deletions
diff --git a/lib/caldav/request/abstract.js b/lib/caldav/request/abstract.js
index 4db3883..6f33af4 100644
--- a/lib/caldav/request/abstract.js
+++ b/lib/caldav/request/abstract.js
@@ -2,7 +2,20 @@
 
   var SAX = ns.require('sax');
   var XHR = ns.require('xhr');
-  var Errors = ns.require('request/errors');
+  var Errors = ns.require('errors');
+
+  function determineHttpStatusError(status) {
+    var message = 'Cannot handle request due to server response';
+    var err = 'Unknown';
+
+    if (status === 500)
+      err = 'ServerFailure';
+
+    if (status === 401)
+      err = 'Authentication';
+
+    return new Errors[err](message);
+  }
 
   /**
    * Creates an (Web/Cal)Dav request.
@@ -72,14 +85,19 @@
           return callback(err);
         }
 
+        // handle the success case
         if (xhr.status > 199 && xhr.status < 300) {
-          // success
           self.sax.close();
-          self._processResult(req, callback);
-        } else {
-          // fail
-          callback(new Errors.CaldavHttpError(xhr.status));
+          return self._processResult(req, callback);
         }
+
+        // probable error cases
+        callback(
+          determineHttpStatusError(xhr.status),
+          xhr
+        );
+
+
       });
 
       return req;