`DataStreamer` class is a `URLSessionDataTask` delegate that logs out incoming data

DataStreamer.swift

extension URL {
    static var WXYCStream: URL {
        return URL(string: "http://audio-mp3.ibiblio.org:8000/wxyc.mp3")!
    }
}

class DataStreamer: NSObject, URLSessionDataDelegate {
    func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
        dump(data)
    }
}

DispatchQueue.global(qos: .background).async {
    let session = URLSession(
        configuration: URLSessionConfiguration.background(withIdentifier: "Hello"),
        delegate: DataStreamer(),
        delegateQueue: .current
    )

    let task = session.dataTask(with: URL.WXYCStream)
    task.resume()
}

let group = DispatchGroup()
group.enter()
group.wait()