ios Xtify push api 415 status code when trying to send a payload to instant push
===

I'm trying to send an payload to Xtify 2.0 push api.

I tried from both my iOS app using this code :

    - (void)sendPushToXids:(NSMutableArray *)xids {
        	ASIFormDataRequest *req = [[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:xtifyPushUrl]];
        	req.requestMethod = @"POST";
        	
        	[req setPostValue:xAppKey forKey:@"appKey"];
        	[req setPostValue:xApiKey forKey:@"apiKey"];
        	[req setPostValue:xids forKey:@"xids"];
        	
        	NSMutableDictionary *contentDict = [[NSMutableDictionary alloc] init];
        	[contentDict setObject:@"This is a message" forKey:@"message"];
        	[contentDict setObject:@"default.caf" forKey:@"sound"];
        	
        	[req setPostValue:contentDict forKey:@"content"];
        		
        	req.delegate = self;
        	[req startAsynchronous];
        }

where xids is a NSMutableArray with one item.

Also i tried using this code using Firefox plugin REST Client:

        {
        "apiKey": "myapikey",
        "appKey": "myappkey",
        "xids": ["500865a987242167c69b4e6c"], 
        "content": {
            "subject": "Greetings Earthlings",
            "message": "Take me to your leader"
        }
    }

(where my "myapikey" and "myappkey" are replaced with my app keys)

with method POST and url "http://api.xtify.com/2.0/push"

In both cases Xtify responds with :

    HTTP Status 415 - Unsupported Media Type
    
    type Status report
    
    message Unsupported Media Type
    
    description The server refused this request because the request entity is in a format not supported by the requested resource for the requested method (Unsupported Media Type).



What am i doing wrong?

Thanks