Fetch not working on localhost (Tried IP too.)

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment: OS: Windows 10 Node: 9.4.0 Yarn: 1.3.2 npm: 5.6.0 Android Studio: 3.0.1

Packages: (wanted => installed) react-native: 0.52.0 react: 16.2.0

Target Platform: Android 26

Issue Statement

API from local server doesnt’t seems to be working, i have tried localhost:3000, 10.0.2.2:3000, <LOCAL_IP>:3000 & 10.0.3.2:3000 In Android Getting network request failed error. Below is the code snippets im using for network request.

Note: I already added the Android Internet permission.

return fetch('http://192.168.3.148:3000/extension/auth')
        .then((response) => response.json())
        .then((responseJson) => {

            this.setState({
                isLoading: false,
                sem: responseJson
            });
        })
        .catch((error) => {
            console.error(error);
        });

[saxenanickk]

@srijishks You should try this solution: https://stackoverflow.com/questions/49206456/react-native-android-connect-backend-service-at-localhost

[andymurakami]

To me is not working:

fetch(‘https://facebook.github.io/react-native/movies.json’) .then((response) => response.json()) .then((responseJson) => { //Alert.alert(“my json” + responseJson.movies); AlertIOS.alert( “Get response”, "Movies query-> " +JSON.stringify(responseJson.movies) ) }) .catch((error) => { console.error(error); });

Returns Request Network Failed

If I use a IP example: http://200.98.245.39 this returns text of html ok.