--- C:/Users/andre/AppData/Local/Temp/TCV9242.tmp/json_server.1.8.2.1.module	Sun Jan 13 12:12:23 2008
+++ C:/www/drupal/contributions/modules/json_server/json_server.module	Fri Jul 11 13:48:29 2008
@@ -16,7 +16,6 @@
   if (!isset($_POST)) {
     return "JSON server accepts POST requests only.";
   }
-  
   $request = $_POST['method'];
   $methods = services_get_all();
   $args = array();
@@ -26,6 +25,20 @@
       unset($_POST['method']);
       $args = array();
       foreach($method['#args'] as $arg) {
+      
+        //If the argument type is defined as binary a matching name argument
+        //should not exist in $_POST.  The matching name argument should instead
+        //be found in the $_FILES superglobal
+        if ($arg['#type'] == 'binary') {
+          if(isset($_POST[$arg['#name']])) {
+            return drupal_to_js(array("status" => FALSE, "data" => "Argument ". $arg['#name'] ." is not of expected type binary"));  
+          }
+          elseif(isset($_FILES[$arg['#name']])) {
+            $args[] = $arg['#name'];
+            continue;
+          }
+        }
+        
         if(isset($_POST[$arg['#name']])) {
           $args[] = $_POST[$arg['#name']];
         }