# HttpWebSocketConnectionCollection.OnWebSocketUnregister

Kind: Event  
Namespace: `Sisk.Core.Http.Streams`  
Assembly: `Sisk.Core.dll`  
Source: https://docs.sisk-framework.org/api/Sisk.Core.Http.Streams.HttpWebSocketConnectionCollection.OnWebSocketUnregister.html

## OnWebSocketUnregister {#Sisk_Core_Http_Streams_HttpWebSocketConnectionCollection_OnWebSocketUnregister}

Represents an event that is fired when an [HttpWebSocket](https://docs.sisk-framework.org/api/Sisk.Core.Http.Streams.HttpWebSocket.md) is closed and removed from this collection.

```csharp
public event WebSocketRegistrationHandler? OnWebSocketUnregister
```

### Event Type

[WebSocketRegistrationHandler](https://docs.sisk-framework.org/api/Sisk.Core.Http.Streams.WebSocketRegistrationHandler.md)?