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fix(gateway): increase WebSocket max payload to 5 MB for image uploads (#14486)

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* fix(gateway): increase WebSocket max payload to 5 MB for image uploads

The 512 KB limit was too small for base64-encoded images — a 400 KB
image becomes ~532 KB after encoding, exceeding the limit and closing
the connection with code 1006.

Bump MAX_PAYLOAD_BYTES to 5 MB and MAX_BUFFERED_BYTES to 8 MB to
support standard image uploads via webchat.

Closes #14400

* fix: align gateway WS limits with 5MB image uploads (#14486) (thanks @0xRaini)

* docs: fix changelog conflict for #14486

---------

Co-authored-by: 0xRaini <0xRaini@users.noreply.github.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
This commit is contained in:
0xRain
2026-02-13 00:48:49 +08:00
committed by GitHub
parent a2ddcdadeb
commit 626a1d0699
4 changed files with 6 additions and 5 deletions
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4
src/gateway/server-constants.ts
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@@ -1,5 +1,5 @@
export const MAX_PAYLOAD_BYTES = 512 * 1024; // cap incoming frame size
export const MAX_BUFFERED_BYTES = 1.5 * 1024 * 1024; // per-connection send buffer limit
export const MAX_PAYLOAD_BYTES = 8 * 1024 * 1024; // cap incoming frame size (~8 MiB; fits ~5,000,000 decoded bytes as base64 + JSON overhead)
export const MAX_BUFFERED_BYTES = 16 * 1024 * 1024; // per-connection send buffer limit (2x max payload)
const DEFAULT_MAX_CHAT_HISTORY_MESSAGES_BYTES = 6 * 1024 * 1024; // keep history responses comfortably under client WS limits
let maxChatHistoryMessagesBytes = DEFAULT_MAX_CHAT_HISTORY_MESSAGES_BYTES;