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WebSocket: ask for 4000-byte file upload blocks #20

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Merged
robdobsn merged 1 commit into from
Oct 24, 2026
Merged

WebSocket: ask for 4000-byte file upload blocks #20

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7 changes: 5 additions & 2 deletions src/RaftChannelWebSocket.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -37,9 +37,12 @@ export default class RaftChannelWebSocket implements RaftChannel {
// Conn event fn
private _onConnEvent: RaftConnEventFn | null = null;

// File Handler parameters
// File Handler parameters - the device's reply to ufStart decides the block size (older firmware allows 800 bytes
// on WebSocket, firmware with PSRAM from 2026-10 up to 16000). Bigger blocks are faster where storage is fast
// (uploads to an SD card: 28 KB/s with 800 byte blocks, 43 with 4000) but the device writes each block in its main
// loop, so 4000 keeps each write short
private _requestedBatchAckSize = 10;
private _requestedFileBlockSize = 500;
private _requestedFileBlockSize = 4000;

fhBatchAckSize(): number { return this._requestedBatchAckSize; }
fhFileBlockSize(): number { return this._requestedFileBlockSize; }
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