Somewhere between 0.0.55 and 0.0.57, socket.io stops working

• Review the documentation: https://facebook.github.io/react-native
• Search for existing issues: https://github.com/facebook/react-native/issues
• Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

Last working version:

react-native info
Environment:
  OS: macOS Sierra 10.12.6
  Node: 8.10.0
  Yarn: 1.6.0
  npm: 5.6.0
  Watchman: 4.9.0
  Xcode: Xcode 9.2 Build version 9C40b
  Android Studio: 3.0 AI-171.4443003

Packages: (wanted => installed)
  react: 16.6.0-alpha.8af6728 => 16.6.0-alpha.8af6728
  react-native: 0.55.x => 0.55.4

Broken version:

  React Native Environment Info:
    System:
      OS: macOS Sierra 10.12.6
      CPU: x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
      Memory: 228.90 MB / 16.00 GB
      Shell: 5.2 - /bin/zsh
    Binaries:
      Node: 8.10.0 - /usr/local/bin/node
      Yarn: 1.6.0 - /usr/local/bin/yarn
      npm: 5.6.0 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 11.2, macOS 10.13, tvOS 11.2, watchOS 4.2
      Android SDK:
        Build Tools: 19.1.0, 23.0.1, 23.0.2, 25.0.2, 26.0.2, 27.0.3, 28.0.0, 28.0.3
        API Levels: 15, 23, 25, 26, 27
    IDEs:
      Android Studio: 3.0 AI-171.4443003
      Xcode: 9.2/9C40b - /usr/bin/xcodebuild
    npmPackages:
      react: 16.6.0-alpha.8af6728 => 16.6.0-alpha.8af6728
      react-native: 0.57.x => 0.57.4
    npmGlobalPackages:
      create-react-native-app: 1.0.0
      react-native-cli: 2.0.1
      react-native-git-upgrade: 0.2.7
      react-native-workers: 0.3.1

Description

Websocket connections time out on 0.0.57. I made an issue in socket.io, but after switching through react-native versions, it’s clearly a react native issue. https://github.com/socketio/socket.io-client/issues/1245 for an example socketio setup.

It doesn’t seem to be the iPhone X simulator, which in 0.0.57 is the default, but in older versions is not. The iPhoneX simulator runs sockets just fine in the older versions.

It might be babel, as it seems there was an upgrade to babel between these versions.

[bgoyal2222]

Tried “socket.io-client”: “2.0.4” it worked for me

[slavikdenis]

In react-native: 0.58.4, problem still remains (I’m using https://github.com/stomp-js/stompjs). The thing, that websocket working only when ‘remote debug’ is on, is driving me crazy 😄 Any workarounds for my case?