How to use Amazon S3 classes with Walrus S3?

I am developing an iphone project in which I have to use Walrus S3 of Eucalyptus which my client has asked to use. It is similar to Amazon S3. He has provided me a url for storing buckets and objects just like there is a url in Amazon S3.

I am using the S3 classes from the following link: http://allseeing-i.com/ASIHTTPRequest/S3

There is some sample code given on that link for creating buckets,creating objects etc. .I tried that code. but after the line [request startSynchronous];

When I check for the request's response开发者_运维问答 status code ,I get 403. I am not able to understand how to use these classes. If anyone has used this before please help me out!!

My problem is resolved.The changes are to be made in the request url for Walrus.