Amazon SNS URL works on browser but not from Android app

I made the url for amazon SNS.

http://sns.ap-northeast-1.amazonaws.com?

AWSAccessKeyId=***********&Action=CreatePlatformEndpoint&PlatformApplicationArn=arn%3Aaws%3Asns%3Aap-northeast-1%3A776188326341%3Aapp%2FGCM%2Fmyapplication&

SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2016-03-20T23%3A08%3A26.601Z

&Token=APA91bFN3NV_cBqPtqc6vUSYm8C6o9m5UMoUAvp3qM6WWPlef5s8G8__RNQi_AljpgTJEq-hWqF7iQYJ-4OXKiRJc1uz5JvzDIXfgWd_5AC08S_m0bOIIdcWW2cMZjAyH7PrXpSu2h9j

&Version=2010-03-31&Signature=%2B%2BjtNjQL7qgxUgnwJIwvxMyOdyQnxlmlHtzOJJ%2FQU6A%3D

This url looks complex however, I have confirmed this url is correct.

I put this url on browser it works fine.

However when I try this from very simple application,
It returns 400 bad request error.

This is very simple titanium source code.

var xhrSNS = Ti.Network.createHTTPClient({

    onload :function(e) {

        Ti.API.info("testPost query:" + JSON.stringify(e));

        Ti.API.info(this.responseText);

    },

    onerror : function(e){

        Ti.API.debug("error:" + e.error);

        }       

});

xhrSNS.open('GET',url);

xhrSNS.send();

I just confused why the same url works on browser and not android.

Moreover, I have confiremd this titanium source code is correct.

Is there any other points I need to check??