nowplaying.swift

import Foundation
import MediaPlayer
import Network

let cmdCenter = MPRemoteCommandCenter.shared()

cmdCenter.togglePlayPauseCommand.addTarget{ (e) -> MPRemoteCommandHandlerStatus in
    return .success
}


var nowPlayingInfo = [String: Any]()

nowPlayingInfo[MPMediaItemPropertyTitle] = "Yes, cosven"
nowPlayingInfo[MPMediaItemPropertyArtist] = "cosven"

MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo
MPNowPlayingInfoCenter.default().playbackState = .playing

let queue = DispatchQueue.global()

let endpoint = NWEndpoint.hostPort(host: "127.0.0.1", port: 23333)
let params = NWParameters(tls: nil, tcp:NWProtocolTCP.Options())
let conn = NWConnection(to: endpoint, using: params)

// TODO: We should build a StreamReader on top of Data.
// TODO: Swift also has async/await support in URLSession,
//   we should take a look at
//   https://developer.apple.com/documentation/foundation/urlsessionstreamtask .
// TODO: It seems that URLSessionStreamDelegate does not support async/await
//   because the underlying InputStream/OutputStream does not has async/await API?
conn.stateUpdateHandler = { state in
    if (state == .ready) {
        conn.receive(minimumIncompleteLength: 1, maximumLength: 256, completion: { (content, ctx, isCompleted, err)  in
            if let c = content, let s = String(data:c, encoding: .utf8){
                print(s)
            }
        })
    }
}

conn.start(queue: queue)

RunLoop.main.run()