requirements of event handlers and callbacks.</p>
<p>Be aware that file upload packets are sent with the content type <a href="http://www.faqs.org/rfcs/rfc2388.html">multipart/form</a>
and some server technologies (notably JEE) may require some custom processing in order to
-retrieve parameter names and parameter values from the packet content.</p></div><div class="hr"></div><a id="Ext.data.Connection-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-autoAbort"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-autoAbort">autoAbort</a></b> : Boolean<div class="mdesc">Whether this request should abort any pending requests. (defaults to false)</div></td><td class="msource">Connection</td></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-defaultHeaders"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-defaultHeaders">defaultHeaders</a></b> : Object<div class="mdesc">An object containing request headers which are added
+retrieve parameter names and parameter values from the packet content.</p>
+<p>Also note that it's not possible to check the response code of the hidden iframe, so the success handler will ALWAYS fire.</p></div><div class="hr"></div><a id="Ext.data.Connection-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-autoAbort"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-autoAbort">autoAbort</a></b> : Boolean<div class="mdesc">Whether this request should abort any pending requests. (defaults to false)</div></td><td class="msource">Connection</td></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-defaultHeaders"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-defaultHeaders">defaultHeaders</a></b> : Object<div class="mdesc">An object containing request headers which are added
to each request made by this object. (defaults to undefined)</div></td><td class="msource">Connection</td></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-disableCaching"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-disableCaching">disableCaching</a></b> : Boolean<div class="mdesc">True to add a unique cache-buster param to GET requests. (defaults to true)</div></td><td class="msource">Connection</td></tr><tr class="config-row "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-disableCachingParam"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-disableCachingParam">disableCachingParam</a></b> : String<div class="mdesc">Change the parameter which is sent went disabling caching
through a cache buster. Defaults to '_dc'</div></td><td class="msource">Connection</td></tr><tr class="config-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.data.Connection-extraParams"></a><b><a href="source/Connection.html#cfg-Ext.data.Connection-extraParams">extraParams</a></b> : Object<div class="mdesc"><div class="short">An object containing properties which are used as
extra parameters to each request made by this object. (defaults to ...</div><div class="long">An object containing properties which are used as