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29 lines
1.4 KiB
Markdown
29 lines
1.4 KiB
Markdown
# Simplex.FileTransfer.Server.Main
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> XFTP router CLI: INI configuration parsing, TLS setup, and default constants.
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**Source**: [`FileTransfer/Server/Main.hs`](../../../../../src/Simplex/FileTransfer/Server/Main.hs)
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## Non-obvious behavior
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### 1. Key router constants
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| Constant | Value | Purpose |
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|----------|-------|---------|
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| `fileIdSize` | 16 bytes | Random data packet/recipient ID length |
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| `fileTimeout` | 5 minutes | Maximum upload duration per chunk |
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| `logStatsInterval` | 86400s (daily) | Stats CSV flush interval |
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| `logStatsStartTime` | 0 (midnight UTC) | First stats flush time-of-day |
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### 2. allowedChunkSizes defaults to all four sizes
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If not configured, `allowedChunkSizes` defaults to `[kb 64, kb 256, mb 1, mb 4]`. The INI file can restrict this to a subset, controlling which chunk sizes the router accepts.
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### 3. Storage quota from INI with unit parsing
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`fileSizeQuota` is parsed from the INI `[STORE_LOG]` section using `FileSize` parsing, which accepts byte values with optional unit suffixes (KB, MB, GB). Absence means unlimited quota (`Nothing`).
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### 4. Dual TLS credential support
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The router supports both primary TLS credentials (`caCertificateFile`/`certificateFile`/`privateKeyFile`) and optional HTTP-specific credentials (`httpCaCertificateFile`/etc.). When HTTP credentials are present, the router uses `defaultSupportedParamsHTTPS` which enables broader TLS compatibility for web clients.
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