React-native: Connection to http://localhost:8081/debugger-proxy?role=client timed out. Are you running node proxy? If you are running on the device, check if you have the right IP address in `RCTWebSocketExecutor.m`.

[phongyewtong]

I run

react-native init Test1

and run

react-native run-ios simulator

. After 3 secs this show up

Connection to http://localhost:8081/debugger-proxy?role=client timed out. Are you running node proxy? If you are running on the device, check if you have the right IP address in RCTWebSocketExecutor.m.

I am running on mac and simulator. I dono if this is a bug? I didnt even change the sample code.

[rogchap]

Are you running the packager?

npm start

[phongyewtong]

I ran. still happened.
this is my package.json
{
"name": "Test1",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start"
},
"dependencies": {
"react": "^15.0.2",
"react-native": "^0.26.1"
}
}

[rogchap]

And the packager shows no errors?

[phongyewtong]

what do you mean by "packager show no errors"? sorry i just use react-native for 3 weeks

[rogchap]

The packager is the what transform your JS code and runs the debugging proxy... should look something like this:

Can you please follow these exact steps to see if you still get the error:

react-native init Test2
cd Test2
react-native run-ios

[phongyewtong]

[rogchap]

Did you follow the steps above? Looks like you're still trying to run Test1
Do you have remote debugging enabled?

[phongyewtong]

Its works now using another name. hmm...what did it just happen?

[rogchap]

Something must have gone wrong during init

[jhalborg]

If anyone finds this later on, this helps: https://stackoverflow.com/a/43285071/1409779 (an answer to an SO post from the same author as this issue)

[SSTPIERRE2]

+1 This happens to me often while developing/debugging on device. Behavior seems to be inconsistent. The only correlation I can find is if you let the device screen turn off/go to sleep for some variable length of time, it doesn't have to be very long. Sometimes simply restarting the build through Xcode works, sometimes I have to close packager terminal and clean the project.

That being said, I love React/RN and think you're all awesome, keep on keepin' on!

[srshah19]

For any future readers, this usually happens when you are running "Debug JS remotely" on multiple devices. Try to turn that off on all simulators/actual devices and rerun the project. It should work.

[karna41317]

@srshah19 not really. new project--> running on real device(and no other), in debug mode and debug js remotely . i get this error while loading jsbundle.

[drpiou]

@srshah19 Happens to me every 5-30min every day. I have to switch on and then off the airplane mode to be able to connect again with the debugger. This occures even without the debugger, and even if I have the debugger on only one device connected at all (debugger and packager).

[cglacet]

@drpiou Wow, I don't want to know why it worked, but it did.