Authenticate on a website and Screen scraping with objective-c

I'm developing an iPhone application where I wish to authenticate (lo开发者_如何学编程gin form) on a site and retrieve some information by doing some screen scraping. Is there an API available to do this or documentation how I could do this?

thanks

ASIHTTPRequest is a fantastic alternative to NSURLRequest, and the linked page has some great code examples to get you started on the right track.

You may try Gogybot library for Monotouch. Its allow you to use very simple commands, like GoToUrl to open page, SetValue to enter text into text boxes and ClickSubmit to authenticate.

See the docs for NSURLRequest