Could not connect to development server just after `react-native init`

[jaggerwang]

Description

The ip in bundle url is not my MacBook's local ip 192.168.1.135.

After change host & port in "Dev settings" to "192.168.1.135:8081", it still has the same error. The packager server is running.

Reproduction Steps and Sample Code

> react-native init gtgj
> cd gtgj
> react-native run-android

Additional Information

• React Native version: 0.43.3
• Platform: Android
• Development Operating System: MacOS
• Dev tools: react-native

[PARAGJYOTI]

Did you run react-native-start or not ? if did try adb reverse tcp:8081 tcp:8081 on the directory ~/android/sdk/platform-tools

[jaggerwang]

@PARAGJYOTI Yes, I'm sure the packager server is running and I do run adb reverse.

[jaggerwang]

By the way, react-native run-ios is ok, the demo app can run on the iPhone simulator.

[superbigsoft]

I had the same issue on Windows. After turning off the firewall so that outside world can connect to the packager server then all good. Hope this help.

[hramos]

Hi there! This issue is being closed because it has been inactive for a while. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. Either way, we're automatically closing issues after a period of inactivity. Please do not take it personally!

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[Aishwarya-Surana]

I am facing the same issue on android real device.
My react-native version is 0.51.0

[galart]

+1

[SolveBugs]

+1

[SaniokUA]

[Louies89]

Hi All,
I found the same issue while running in windows environment and simulating using android simulator.
After doing some trial & error, I found the solution as below:

1>> Change the port in "\node_modules\react-native\local-cli\server\server.js" from default:

process.env.RCT_METRO_PORT || 8081

to

default: process.env.RCT_METRO_PORT || 9088

if the port is blocked or issued to some other application.
Note: You can choose any port number, I have chosen 9088
2>> Run the command react-native run-android --port 9088 (Put your port number here). This port shall be sent to adb running, so that both server and adb shall be in same port.
3>> Now in Android studio simulator, press Ctrl+m, to go for "Dev Setting", then select Debug Server port & host for Device, set "localhost:9088".
4>> Open developer console in chrome using the url http://localhost:9088/debugger-ui/

Now it will start loading the changes you make in your application.

Enjoy coding now :)