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!!

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