public override async Task ReceiveAsync(YtCfg ytCfg, string vid, CookieContainer cc)
{
if (_cts != null)
{
throw new InvalidOperationException("receiving");
}
_cts = new CancellationTokenSource();
try
{
await ReceiveInternalAsync(ytCfg, vid, cc);
}
finally
{
_cts = null;
}
}
protected virtual Task CreateMetadataReceivingTask(ref IMetadataProvider metaProvider, BrowserType browserType, string vid, string liveChatHtml)
{
Task metaTask = null;
YtCfg ytCfg = null;
try
{
var ytCfgStr = Tools.ExtractYtcfg(liveChatHtml);
ytCfg = new YtCfg(ytCfgStr);
}
catch (ParseException ex)
{
_logger.LogException(ex, "live_chatからのytcfgの抜き出しに失敗", liveChatHtml);
}
if (ytCfg != null)
{
//"service_ajax?name=updatedMetadataEndpoint"はIEには対応していないらしく、400が返って来てしまう。
//そこで、IEの場合のみ旧版の"youtubei"を使うようにした。
if (browserType == BrowserType.IE)
{
metaProvider = new MetaDataYoutubeiProvider(_server, _logger);
}
else
{
metaProvider = new MetadataProvider(_server, _logger);
}
metaProvider.MetadataReceived += (s, e) =>
{
MetadataUpdated?.Invoke(this, e);
};
metaProvider.InfoReceived += (s, e) =>
{
SendInfo(e.Comment, e.Type);
};
metaTask = metaProvider.ReceiveAsync(ytCfg: ytCfg, vid: vid, cc: _cc);
}
return(metaTask);
}
public async Task ReceiveInternalAsync(YtCfg ytCfg, string vid, CookieContainer cc)
{
var url = "https://www.youtube.com/youtubei/v1/updated_metadata?alt=json&key=" + ytCfg.InnertubeApiKey;
var payload = "{\"context\":{\"client\":{\"hl\":\"ja\",\"gl\":\"JP\",\"clientName\":1,\"clientVersion\":\"2.20210114.08.00\",\"screenDensityFloat\":\"1.25\"}},\"videoId\":\"" + vid + "\"}";
//var payloadBytes = Encoding.UTF8.GetBytes(payload);
//var wc = new MyWebClient(cc);
while (!_cts.IsCancellationRequested)
{
int timeoutMs = 0;
//wc.Headers["origin"] = "https://www.youtube.com";
//wc.Headers[HttpRequestHeader.ContentType] = "application/json";
//wc.Headers[HttpRequestHeader.Accept] = "*/*";
try
{
var res = await GetMetadata(cc, url, payload);
dynamic json = JsonConvert.DeserializeObject(res);
if (!json.ContainsKey("continuation"))
{
SendInfo($"updated_metadataにcontinuationが無い", InfoType.Debug);
throw new ContinuationNotExistsException(res);
}
if (json.continuation.ContainsKey("invalidationContinuationData"))
{
throw new ParseException(res);
}
else
{
timeoutMs = (int)json.continuation.timedContinuationData.timeoutMs;
}
var metadata = ActionsToMetadata(json.actions);
metaReceived?.Invoke(this, metadata);
}
catch (TaskCanceledException)
{
break;
}
catch (WebException ex) when(ex.Status == WebExceptionStatus.ProtocolError)
{
var httpRes = (HttpWebResponse)ex.Response;
var code = httpRes.StatusCode;
_logger.LogException(ex, "", $"url={url}");
SendInfo($"メタデータの取得でエラーが発生 ({code})", InfoType.Notice);
}
catch (WebException ex)
{
SendInfo($"メタデータの取得でエラーが発生 ({ex.Status})", InfoType.Notice);
Debug.WriteLine(ex.Message);
}
catch (ParseException ex)
{
_logger.LogException(ex);
}
catch (ContinuationNotExistsException ex)
{
_logger.LogException(ex);
break;
}
catch (Exception ex)
{
var parseEx = new ParseException("", ex);
_logger.LogException(parseEx);
}
timeoutMs = timeoutMs == 0 ? 1000 : timeoutMs;
try
{
await Task.Delay(timeoutMs, _cts.Token);
}
catch (TaskCanceledException)
{
break;
}
}
_cts = null;
}
public override async Task ReceiveAsync(YtCfg ytCfg, string vid, CookieContainer cc)
{
_cts = new CancellationTokenSource();
var token = ytCfg.XsrfToken;
//このAPIを呼び出すとき、Cookieに"YSC"と"VISITOR_INFO1_LIVE"が必須。
//2つとも配信ページか $"https://www.youtube.com/live_chat?v={vid}&is_popout=1"にアクセスした時にCookieをセットしなければもらえる。
//コメビュではtokenとかを取得するために"/live_chat"に必ずアクセスする必要があるため、未ログイン時にはそれで取得した値を使えば良い。
var url = "https://www.youtube.com/service_ajax?name=updatedMetadataEndpoint";
//この値接続毎に固定っぽい。continuationも変わらない気がする。
var sej = "{\"clickTrackingParams\":\"CIQBEMyrARgAIhMIrdnBx6fm2wIVQ5VYCh14dQoMKPgd\",\"commandMetadata\":{\"webCommandMetadata\":{\"url\":\"/service_ajax\",\"sendPost\":true}},\"updatedMetadataEndpoint\":{\"videoId\":\"" + vid + "\"}}";
var data = new Dictionary <string, string>
{
{ "sej", sej },
//{"csn", "E90sW4DVBdaP4ALlho8Q" },
{ "session_token", token },
};
var encodedData = string.Join("&", data.Select(kv => kv.Key + "=" + HttpUtility.UrlEncode(kv.Value))); //HttpUtility.UrlEncode()の戻り値は小文字だけど問題ない。
string encodedContinuation = "";
bool isFatalError = false; //続行不能なエラーが出た場合にtrueにする。
while (!_cts.IsCancellationRequested)
{
int timeoutMs = 0;
try
{
var res = await GetMetadata(cc, url, encodedContinuation + encodedData);
dynamic d = JsonConvert.DeserializeObject(res);
string continuation;
if (!d.ContainsKey("code") || d.code != "SUCCESS")
{
if (res == "{\"errors\":[\"Invalid Request\"]}")
{
isFatalError = true;
}
var v = string.Join("&", data.Select(kv => kv.Key + "=" + kv.Value));
//{"code":"ERROR","error":"不明なエラーです。"}
//{"code":"ERROR","error":"この機能は現在利用できません。しばらくしてからもう一度お試しください。"}
throw new ParseException($"res={res},ytCfg={ytCfg},encoded={v}");
}
if (d.data.continuation.ContainsKey("invalidationContinuationData"))
{
throw new ParseException(res);
}
else
{
continuation = d.data.continuation.timedContinuationData.continuation;
//if (!data.ContainsKey("continuation"))
//{
// data.Add("continuation", continuation);
//}
//else
//{
// data["continuation"] = continuation;
//}
encodedContinuation = "continuation=" + HttpUtility.UrlEncode(continuation) + "&";
timeoutMs = (int)d.data.continuation.timedContinuationData.timeoutMs;
}
try
{
var metadata = ActionsToMetadata(d.data.actions);
metaReceived?.Invoke(this, metadata);
}
catch (Exception ex)
{
throw new ParseException(res, ex);
}
}
catch (HttpRequestException ex)
{
_logger.LogException(ex);
SendInfo($"メタデータの取得でエラーが発生 ({ex.Message})", InfoType.Notice);
break;
}
catch (HttpException ex)
{
_logger.LogException(ex);
SendInfo($"メタデータの取得でエラーが発生 ({ex.Message})", InfoType.Notice);
break;
}
catch (ParseException ex)
{
_logger.LogException(ex);
if (isFatalError)
{
SendInfo("メタデータの取得がキャンセルされました（Invalid Request）", InfoType.Notice);
break;
}
}
catch (TaskCanceledException ex)
{
SendInfo("メタデータの取得がキャンセルされました（" + ex.Message + "）", InfoType.Notice);
break;
}
catch (Exception ex)
{
var parseEx = new ParseException("", ex);
_logger.LogException(parseEx);
}
timeoutMs = timeoutMs == 0 ? 1000 : timeoutMs;
try
{
await Task.Delay(timeoutMs, _cts.Token);
}
catch (TaskCanceledException)
{
break;
}
}
_cts = null;
return;
}
public abstract Task ReceiveAsync(YtCfg ytCfg, string vid, CookieContainer cc);
