Swift - contentsOfURL returns 'nil' with specific site, but it works on browser

Question

This code works with other URL's, but not with this one. It always returns nil with "contentsOfURL". Why?

var url = NSURL(string: "http://www.bsnpr.com/api/standing.asp?serie=1&liga=1&y=2015")
var err: NSError?
var data = NSData(contentsOfURL: url!, options: nil, error: &err)

"err" delivers the message:

"Optional(Error Domain=NSCocoaErrorDomain Code=256 "The operation couldn’t be completed. (Cocoa error 256.)" UserInfo=0x7f8f32c2e1e0 {NSURL=http://www.bsnpr.com/api/standing.asp?serie=1&liga=1&y=2015})"

Any ideas? Thanks in advance.

See that `error` parameter? Instead of supplying `nil`, supply an instance on `NSError` - If you do this you will get error 256, which unfortunately isn't very helpful; it basically means something went wrong. It seems that `contentsOfURL` doesn't like your server for some reason — Paulw11, Jun 04 '15 at 03:09

score 0 · Answer 1 · answered Jun 04 '15 at 05:56

Your server delivers data with Transfer-Encoding set to chunked, and NSData doesn't like it.

You can get your data with a REST framework like Alamofire:

Alamofire.request(.GET, "http://www.bsnpr.com/api/standing.asp?serie=1&liga=1&y=2015")
    .responseJSON { (request, response, json, error) in
        println(json) // works with your url, I just tested
}

Swift - contentsOfURL returns 'nil' with specific site, but it works on browser

1 Answers1