static void setUseEngineSocketByDefault(boolean useEngineSocket) {
        useEngineSocketByDefault = useEngineSocket;
        // The default SSLSocketFactory may already have been created, so also change its setting.
        SocketFactory defaultFactory = SSLSocketFactory.getDefault();
        if (defaultFactory instanceof OpenSSLSocketFactoryImpl) {
            ((OpenSSLSocketFactoryImpl) defaultFactory).setUseEngineSocket(useEngineSocket);
        }
    }
Configures the default socket type to be created for the default and all new instances.
common/src/main/java/org/conscrypt/OpenSSLSocketFactoryImpl.java