React Native Post Request via Fetch throws Network Request Failed

Question

I´ve came across the following error. At the moment I developing an Android App with React Native therefore I´m planning to use fetch for doing a post request for me.

Answer 1

Developing with Windows OS/PHP built-in server/react-native Android on device:

• check server local IP address (ipconfig), e.g. 172.16.0.10
• in react-native fetch use this URL and proper port (fetch('http://172.16.0.10:8000/api/foo))
• run PHP built-in server with this specific IP instead of the localhost: php -S 172.16.0.10:8000 ...
• turn off Windows firewall for the private networks

That fixed the connection problem between Android phone and the local server for me.