| 353 | }, |
| 354 | _requestDelay: 0, |
| 355 | async _request(options) { |
| 356 | options = Object.assign({}, NO_CACHE, options); |
| 357 | options.headers = Object.assign({}, this.headers, options.headers); |
| 358 | let { url } = options; |
| 359 | if (url.startsWith('/')) url = (options.prefix ?? this.urlPrefix) + url; |
| 360 | let delay = this._requestDelay; |
| 361 | let attempts = 5; |
| 362 | while (attempts > 0) { |
| 363 | attempts -= 1; |
| 364 | if (delay >= 200) await makePause(delay); |
| 365 | try { |
| 366 | const res = await request(url, options); |
| 367 | this._requestDelay >>= 1; |
| 368 | return res.data; |
| 369 | } catch (err) { |
| 370 | if (err?.status !== 429 || attempts <= 0) throw err; |
| 371 | const retryAfter = err.headers?.get('retry-after'); |
| 372 | const serverDelay = |
| 373 | retryAfter && |
| 374 | (isNaN(+retryAfter) |
| 375 | ? new Date(retryAfter).getTime() - Date.now() |
| 376 | : +retryAfter * 1000); |
| 377 | if (serverDelay) { |
| 378 | delay = serverDelay; |
| 379 | } else { |
| 380 | delay = Math.max(1000, delay * 2); |
| 381 | this._requestDelay = delay; |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | }, |
| 386 | _requestProcessing: false, |
| 387 | async _handleRequests() { |
| 388 | if (this._requestProcessing) return; |