Bugfix in HTTP server file cache update logic

Why the cache is not updated? #276

Fix of WebSocket close status frame

Fix of WebSocket close status frame

Fix of WebSocket close status frame

Fix of WebSocket close status frame (thanks to @john-hollander)

.NET 8 support

.NET 8 support

.NET 7 support

.NET 7 support

Extended payload length bug. #229

Extended payload length bug. #229

Added keepalive timeout, interval and retry count options #219

Added keepalive timeout, interval and retry count options #219

Browser connections fail with "A server must not mask any frames that it sends to the client" #213

Browser connections fail with "A server must not mask any frames that it sends to the client" #213

Memory<byte> and Span<byte> support #207

6.4.0

Update nuget packages

Deadlock in WsSession/WebSocket #205

Deadlock in WsSession/WebSocket #205