How to use proxies library in flutter?

Question

I want to create an Android app that connects to a proxy by button clicked and I'd like to know what should do to make this event?

My proxy needs(password, username, host, port).

I would be appreciated if you help me with this problem .

Answer 1

Add DIO settings like this

String proxy = '<IP>:<PORT>'; //eg 192.168.1.1:8080
var credentials = HttpClientBasicCredentials(<USERNAME>, <PASSWORD>);
bool isProxyChecked = true;

(dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate = 
(client) {
  client.badCertificateCallback = (X509Certificate cert, String host, int port) {
    return isProxyChecked && Platform.isAndroid;
  };
  client.findProxy = (url) {
    return isProxyChecked ? 'PROXY $proxy' : 'DIRECT';
  };

  client.addProxyCredentials(<PROXY_IP>, <PORT>, 'main', credentials);

};