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fix: improve download/upload reliability and fix FILE_PARTS_INVALID

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- Add downloadStarted flag to prevent false "stopped unexpectedly" errors
  when TDLib emits initial updateFile before download is active
- Add 5-minute stall detection for both downloads and uploads
- Reduce max split part size from 2GiB to 1950MiB to stay under
  Telegram's internal upload part count limits
- Increase timeouts from max(10min, 15min/GB) to max(15min, 20min/GB)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
xCyanGrizzly
2026-03-25 21:40:00 +01:00
parent fe28c31b9e
commit d6386209be
4 changed files with 71 additions and 10 deletions
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8
worker/src/archive/split.ts
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@@ -6,8 +6,12 @@ import { childLogger } from "../util/logger.js";
const log = childLogger("split");
/** 2GB in bytes — Telegram's file size limit */
const MAX_PART_SIZE = 2n * 1024n * 1024n * 1024n;
/**
* 1950 MiB — safely under Telegram's 2GB upload limit.
* At exactly 2GiB, TDLib's internal 512KB chunking can exceed Telegram's
* 4000-part threshold, causing FILE_PARTS_INVALID errors.
*/
const MAX_PART_SIZE = 1950n * 1024n * 1024n;
/**
* Split a file into ≤2GB parts using byte-level splitting.