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fern-support merged 1 commit into from
Mar 20, 2026
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Update changelogs from fern repo #4417

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8 changes: 8 additions & 0 deletions fern/products/sdks/overview/csharp/changelog/2026-03-20.mdx
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## 2.40.0
**`(feat):`** Configure PING/PONG keep-alive on `ClientWebSocket`. The default connection factory
now sets `KeepAliveInterval` (default: 30 s) and, on .NET 9+, `KeepAliveTimeout`
(default: 20 s) to enable the PING/PONG keep-alive strategy that detects unresponsive
servers at the transport level. Both values are exposed as public properties on
`WebSocketConnection` for caller customization.


## 2.38.2
**`(fix):`** Add `using` declaration to `JsonDocument` in WebSocket `OnTextMessage` handler.
`JsonDocument` implements `IDisposable` and holds pooled memory buffers; without
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