CocoaDev

From Apple’s developer documentation:

“An NSHTTPURLResponse object represents a response to an HTTP URL load request. It’s a subclass of NSURLResponse that provides methods for accessing information specific to HTTP protocol responses.”

http://developer.apple.com/documentation/Cocoa/Reference/Foundation/ObjC_classic/Classes/NSHTTPURLResponse.html

“NSURLResponse declares the programmatic interface for an object that accesses the response returned by an NSURLRequest instance.”

http://developer.apple.com/documentation/Cocoa/Reference/Foundation/ObjC_classic/Classes/NSURLResponse.html

Is there a way to get a NSHTTPURLResponse? I can’t find any functions that return that type, and I need to check the code of a request response.

I don’t think there is anything that returns that type, but you’ll see that it’s subclassed from NSURLResponse, so you can just cast that to use it as that: [(NSHTTPURLResponse)reponse statusCode] *should work. I believe there also a way of assigning one when you load something in a synchronous request. See NSURLRequest.

Although I haven’t looked into it or anything, it might be wise to check the scheme of the response when casting it as above; in case the original request gets transformed into something else (ie. http -> ftp or telnet, etc) calling the HTTP methods on another scheme might yield unexpected results (but again: I didn’t check into it). -Seb

As others have suggested, you can get at the reponse code (and other headers) by casting the object returned from the dataSource method on a WebFrame. For example:

NSHTTPURLResponse * response = (NSHTTPURLResponse *) [ [ [ webView mainFrame ] dataSource ] response ];

This works in Tiger. TheMZA

It might be safer to check and see if the response will respond to a statusCode message before casting. Something like this

// check if this is OK (not a 404 or the like)
if([response respondsToSelector:@selector(statusCode)]){
    int statusCode = [(NSHTTPURLResponse *)response statusCode];
    if(statusCode >= 400){
        // cancel connections, release stuff, whatever
    }
}

JohnPannell