Rough method used for testing if S3 credentials work

S3Uploader.swift

  // In reply to this comment:
  //  http://www.codeography.com/2016/03/20/signing-aws-api-requests-in-swift.html#comment-2647137142
  func test() -> String {
    let bodyDigest = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
    let url = NSURL(string: "http://\(bucketName!).s3.amazonaws.com")!

    let signer = S3V4Signer(accessKey: accessKey!, secretKey: secretKey!, regionName: regionName!)
    let headers = signer.signedHeaders(url, bodyDigest: bodyDigest, httpMethod: "GET")

    let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "GET"
    for (key, value) in headers {
      request.addValue(value, forHTTPHeaderField: key)
    }

    do {
      var response: NSURLResponse?
      try NSURLConnection.sendSynchronousRequest(request, returningResponse: &response)
      print(response?.description)
      if let httpResponse = response as? NSHTTPURLResponse {
        if httpResponse.statusCode == 200 {
          return "Success!"
        } else {
          return "Failed with HTTP status code \(httpResponse.statusCode)"
        }
      }
    } catch (let e) {
      return "Failed with error \(e)"
    }
    return "Error Connecting to \(bucketName)"
  }