nestjs / nest / 4be5b7a3-a46b-47a1-ac30-fea040e374e6 / 1

90%

master: 90%

Pull #16336

circleci

fix(websockets): deliver exception errors to native ws clients

BaseWsExceptionFilter used client.emit() to send exception payloads,
which only works with socket.io. For native WebSocket clients (ws
library), emit() is just EventEmitter.emit() and does not send data
over the wire, causing exceptions to be silently swallowed.

Add sendExceptionToClient() and isNativeWebSocket() methods to
BaseWsExceptionFilter to detect the client type and use client.send()
for native WebSocket clients. Update WsExceptionsHandler guard to
allow clients with send() through to the exception filter.

Closes #9056

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