URL proximo = new URL(System.getenv('PROXIMO_URL')
String userInfo = proximo.getUserInfo()
String user = userInfo.substring(0, userInfo.indexOf(':'))
String password = userInfo.substring(userInfo.indexOf(':') + 1)
System.setProperty('socksProxyHost', proximo.getHost())
System.setProperty('socksProxyPort', '1080')
Authenticator.setDefault(new ProxyAuth(user, password))

private class ProxyAuth extends Authenticator {
    private PasswordAuthentication passwordAuthentication;

    private ProxyAuth(String user, String password) {
        passwordAuthentication = new PasswordAuthentication(user, password.toCharArray())
    }

    @Override
    protected PasswordAuthentication getPasswordAuthentication() {
        return passwordAuthentication;
    }
}