How to connect to firebase database with proxy in android studio

Im trying to connect to firebase database in android studio but i get this error log D/NetworkManagementSocketTagger: tagSocket(64) with statsTag=0xffffffff, statsUid=-1 I've tried to many codes by proxy but still not working can any one helps??

    System.setProperty("https.proxyHost", "0.0.0.0");
    System.setProperty("https.proxyPort", "0000");
    System.setProperty("com.google.api.client.should_use_proxy", "true");

When i turn vpn on the problem will solve but i want to use the proxy in app Not by opening other application

I also tried EasyProxy library but i get same error