SSE doesn't work on ANDROID RN 0.74 withouth Flipper

[taniibarra]

My application does not receive events in android but it does in ios.
We don't have the Flipper java plugign and still in DEBUG mode it is only in [EventSource] Will open new connection in 500 ms.
After that nothing else arrives.
In IOS it works correctly and events continue to arrive.

[EmilJunker]

I'm using this library on React Native 0.74 without issues. There must be some problem with your code.

Have you checked if the problem also occurs in RELEASE mode?

[NurRachman]

i'm getting the same problem in "react-native": "0.71.8" and "react-native-sse": "^1.1.0".
I have tried using version 1.2.1 but it still doesn't work.

i tried creating a new project "react-native": "0.74.3" and used "react-native-sse": "^1.2.1" for this one worked fine.
are there any changes that need to be adjusted for previous versions of react native?

[EmilJunker]

@NurRachman In version 0.74 of react-native, the Flipper plugin was removed. That's why react-native-sse is now working right out of the box.

In older versions of react-native, you need to manually disable Flipper. As long as Flipper is enabled, SSE won't work in debug builds.

[NurRachman]

@EmilJunker I've tried it, and it works.
Thanks.

[amit13091992]

any updates on this? Need a fix for this issue. Here are my package version information

"react": "18.2.0",
"react-native": "^0.73.6",
"react-native-sse": "^1.2.1",

[EmilJunker]

@amit13091992 You need to disable Flipper, see https://stackoverflow.com/questions/69235694/react-native-cant-connect-to-sse-in-android/69235695#answer-69235695

As long as Flipper is enabled, SSE won't work in debug builds on Android.

[amit13091992]

@amit13091992 You need to disable Flipper, see https://stackoverflow.com/questions/69235694/react-native-cant-connect-to-sse-in-android/69235695#answer-69235695

As long as Flipper is enabled, SSE won't work in debug builds on Android.

@EmilJunker this file is not available in my project, as I am using the new version of react-native.

[EmilJunker]

this file is not available in my project, as I am using the new version of react-native.

Just search your project for the word "Flipper". I assure you that you will find it somewhere.

[wojciechkrol]

Hello everyone,

I checked the case yesterday and in the latest version of React Native (0.74.3), the issue does not occur. I also checked version React Native (0.73.6) and I have to confirm that the problem occurs. In Expo 51, event-stream is blocked by the dev tools interceptor. Theoretically, the problem has been resolved, but for some reason, events are not dispatched until the stream ends.

Ref:
expo/expo#27526

[EmilJunker]

In Expo 51, event-stream is blocked by the dev tools interceptor.

There is supposedly a fix for the Expo dev tools interceptor, available here: https://github.com/MartinHarkins/expo-sse-patch
Did you try it?

[Off2Race]

Hi, @EmilJunker – Have you guys considered adding a note to the README telling people to disable Flipper for RN < 0.74, specifically for Android in debug? I ran into this problem myself and fortunately found this thread relatively quickly. Others might not be so lucky if they're working purely from the install instructions in the README. Just a suggestion :)