Repository navigation
WebSocket dispatches message events after close() has been called #59289
Description
Description
After WebSocket.close() has been called, React Native's WebSocket still fires onmessage for frames that arrive while the socket is closing (readyState === 2).
The WebSockets spec says these messages must be ignored. When a WebSocket message has been received: "If ready state is not OPEN (1), then return." Browsers follow this, and so do spec-compliant implementations such as Node's built-in WebSocket.
In packages/react-native/Libraries/WebSocket/WebSocket.js, the websocketMessage listener checks only the socket id before dispatching. It never checks readyState.
Steps to reproduce
See reproducer here: #59287
- Connect to a server that greets the websocket (reproducer uses
echo.websocket.org) - Close the websocket immediately before any messages arrive.
- Observe the onmessage events still being emitted.
React Native Version
0.88.0
Affected Platforms
Runtime - Android, Runtime - iOS
Output of npx @react-native-community/cli info
System:
OS: macOS 26.3
CPU: (10) arm64 Apple M1 Pro
Memory: 181.05 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 22.23.3
path: /Users/davidliu/.nvm/versions/node/v22.23.3/bin/node
Yarn:
version: 1.22.22
path: /Users/davidliu/.nvm/versions/node/v22.23.3/bin/yarn
npm:
version: 10.9.9
path: /Users/davidliu/.nvm/versions/node/v22.23.3/bin/npm
Watchman:
version: 2026.03.30.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /Users/davidliu/.rbenv/shims/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 25.5
- iOS 26.5
- macOS 26.5
- tvOS 26.5
- visionOS 26.5
- watchOS 26.5
Android SDK:
API Levels:
- "24"
- "27"
- "28"
- "29"
- "30"
- "31"
- "33"
- "34"
- "35"
- "36"
- "37"
Build Tools:
- 28.0.3
- 29.0.0
- 29.0.2
- 30.0.2
- 30.0.3
- 31.0.0
- 32.0.0
- 33.0.0
- 33.0.1
- 33.0.2
- 34.0.0
- 35.0.0
- 35.0.0
- 35.0.0
- 36.0.0
- 37.0.0
System Images:
- android-36 | Google Play ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: 2025.2 AI-252.27397.103.2522.14514259
Xcode:
version: 26.6/17F113
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.14
path: /opt/homebrew/opt/sdkman-cli/libexec/candidates/java/current/bin/javac
Ruby:
version: 3.3.5
path: /Users/davidliu/.rbenv/shims/ruby
npmPackages:
"@react-native-community/cli": Not Found
react:
installed: 19.3.0
wanted: 19.3.0
react-native:
installed: 0.88.0
wanted: 0.88.0
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: Not found
newArchEnabled: Not found
iOS:
hermesEnabled: Not found
newArchEnabled: Not found
Stacktrace or Logs
Expected:
close() called, readyState=2
onclose code=...
Actual:
close() called, readyState=2
message after close(): "Request served by ...", readyState=2
message after close(): "hello", readyState=2
onclose code=...
MANDATORY Reproducer
Screenshots and Videos
No response
Activity
Ignore WebSocket messages that arrive after close() (react#59291)