如何使用Spotify SDK和Swift 3正确处理令牌刷新.错误代码= 3840

Question

文艺青年最爱的 我收到:JSON text did not start with array or object and option to allow fragments not set.如果我想获得一个令牌和No refresh token available in the session!如果我尝试续订的令牌.

我正在尝试为Swift 3中的Objective-C Spotify iOS SDK beta-25设置令牌刷新.我正在使用Heroku服务器和Spotify提供的Ruby脚本,更改为我的凭据.

require 'sinatra'
require 'net/http'
require 'net/https'
require 'base64'
require 'encrypted_strings'
require 'json'

CLIENT_ID = ENV['xxx']
CLIENT_SECRET = ENV['xxx']
ENCRYPTION_SECRET = ENV['xxx']
CLIENT_CALLBACK_URL = ENV['xxx://returnafterlogin']
AUTH_HEADER = "Basic " + Base64.strict_encode64(CLIENT_ID + ":" + CLIENT_SECRET)
SPOTIFY_ACCOUNTS_ENDPOINT = URI.parse("https://accounts.spotify.com")

get '/' do
"Working"    
end

post '/swap' do

    # This call takes a single POST parameter, "code", which
    # it combines with your client ID, secret and callback
    # URL to get an OAuth token from the Spotify Auth Service,
    # which it will pass back to the caller in a JSON payload.

    auth_code = params[:code]

    http = Net::HTTP.new(SPOTIFY_ACCOUNTS_ENDPOINT.host, SPOTIFY_ACCOUNTS_ENDPOINT.port)
    http.use_ssl = true

    request = Net::HTTP::Post.new("/api/token")

    request.add_field("Authorization", AUTH_HEADER)

    request.form_data = {
        "grant_type" => "authorization_code",
        "redirect_uri" => CLIENT_CALLBACK_URL,
        "code" => auth_code
    }

    response = http.request(request)

    # encrypt the refresh token before forwarding to the client
    if response.code.to_i == 200
        token_data = JSON.parse(response.body)
        refresh_token = token_data["refresh_token"]
        encrypted_token = refresh_token.encrypt(:symmetric, :password => ENCRYPTION_SECRET)
        token_data["refresh_token"] = encrypted_token
        response.body = JSON.dump(token_data)
    end

    status response.code.to_i
    return response.body
end

post '/refresh' do

    # Request a new access token using the POST:ed refresh token

    http = Net::HTTP.new(SPOTIFY_ACCOUNTS_ENDPOINT.host, SPOTIFY_ACCOUNTS_ENDPOINT.port)
    http.use_ssl = true

    request = Net::HTTP::Post.new("/api/token")

    request.add_field("Authorization", AUTH_HEADER)

    encrypted_token = params[:refresh_token]
    refresh_token = encrypted_token.decrypt(:symmetric, :password => ENCRYPTION_SECRET)

    request.form_data = {
        "grant_type" => "refresh_token",
        "refresh_token" => refresh_token
    }

    response = http.request(request)

    status response.code.to_i
    return response.body

end

通过设置:

SPTAuth.defaultInstance().tokenSwapURL = URL(string: SpotifyCredentials.tokenSwapURLSwap)
SPTAuth.defaultInstance().tokenRefreshURL = URL(string: SpotifyCredentials.tokenSwapURLRefresh)

现在用户无法再登录了,我收到了错误.如果我正在删除,tokenSwapURL并且tokenRefreshURL一切正常,但用户必须每60分钟重新验证一次.

如果我正在尝试使用已登录的用户刷新令牌,我会收到:

"No refresh token available in the session!"

if SPTAuth.defaultInstance().session != nil {
        print("needs login")
        SPTAuth.defaultInstance().renewSession(SPTAuth.defaultInstance().session, callback: { error, session in
            if error != nil {
                print("\(error?.localizedDescription)") // "No refresh token available in the session!"
                return
            }
        })
}

我错过了什么？非常感谢帮助.

Answer 1

我已经能够使用以下 Git 为 Spotify 创建令牌刷新服务：

https://github.com/adamontherun/SpotifyTokenRefresh

您需要做的就是按照 git 项目中 Heroku 链接的说明进行操作。

我试图与该项目的作者取得联系，但他无法告诉我，为什么我的方法不起作用，而他的方法却有效。我能给你的就是这个工作Deploy to Heroku链接。