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Hermes Debugger - not discoverable

See original GitHub issue

🐛 Bug Report

When I try to connect my fresh RN app 0.62 with latest Flipper 0.36, it will fail to discover my hermes on android emulator. Is there any extra setup needed?

I noticed that metro will start throwing this error every few seconds (I guess that’s flipper hermes plugin pooling to discover)

Error: Unauthorized request from http://localhost:3000. This may happen because of a conflicting browser extension. Please try to disable it and try again.
    at getSecurityHeadersMiddleware (/Users/anonymous/Git/RN062/node_modules/@react-native-community/cli/build/commands/server/middleware/getSecurityHeadersMiddleware.js:19:10)
    at call (/Users/anonymous/Git/RN062/node_modules/connect/index.js:239:7)
    at next (/Users/anonymous/Git/RN062/node_modules/connect/index.js:183:5)
    at Function.handle (/Users/anonymous/Git/RN062/node_modules/connect/index.js:186:3)
    at handle (/Users/anonymous /Git/RN062/node_modules/connect/index.js:91:14)
    at call (/Users/anonymous/Git/RN062/node_modules/connect/index.js:239:7)
    at next (/Users/anonymous/Git/RN062/node_modules/connect/index.js:183:5)
    at Function.handle (/Users/anonymous/Git/RN062/node_modules/connect/index.js:186:3)
    at Server.app (/Users/anonymous/Git/RN062/node_modules/connect/index.js:51:37)
    at Server.emit (events.js:210:5)

I can see that Chrome itself is able to find hermes for debugging via /json request

To Reproduce

Install fresh React Native app
Enable Hermes and install to Android emulator
Open flipper and try the Hermes debug plugin

Environment

Flipper: 0.36.0 React Native: 0.62

One screenshot to describe the situation 😄

Issue Analytics

State:
Created 3 years ago
Comments:14 (8 by maintainers)

Top GitHub Comments

2reactions

mweststratecommented, Apr 7, 2020

Could you check the locally installed version of @react-native-community/cli? It should be 4.5.1 at least (see this PR).

1reaction

usrbowecommented, Apr 17, 2020

@Grohden For iOS, this is not the correct plugin to use. Hermes is currently only supported on Android. The Debug option is for “remote debugging” and is not currently supported within Flipper.

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