XMLRPC Not working on Localhost

Hey guys, I’ve been working on a WordPress theme for a while now and all works fine when it’s on my server, but when I load it up on my machine locally I am unable to utilise certain functionality, namely the ability to post from outside the admin panel. To do this I use XMLRPC and the following code –

$params = array(0,$username,$password,$content,true);
$request = xmlrpc_encode_request('metaWeblog.newPost',$params);
$ch = curl_init();
curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
curl_setopt($ch, CURLOPT_URL, $rpcurl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 1);
$results = curl_exec($ch);
        curl_close($ch);

The params passed are all valid and correct, and I just cannot figure out what is wrong for the life of me. Any help would be much appreciated.