tls_client_auth  (string)    clientAuth determines the Kafka server's policy for TLS client auth
sasl             (on|off)    set to 'on' to enable SASL authentication
tls              (on|off)    set to 'on' to enable TLS
tls_skip_verify  (on|off)    trust server TLS without verification, defaults to "on" (verify)
client_tls_cert  (path)      path to client certificate for mTLS auth

  //   Requests for this signer are never auto-approved by kube-controller-manager, and can be issued by the "csrsigning" controller in kube-controller-manager.
  //
  // More details are available at https://k8s.io/docs/reference/access-authn-authz/certificate-signing-requests/#kubernetes-signers
  //
  // Custom signerNames can also be specified. The signer defines:

    expectedAuthParams["qop"] = "auth"
    expectedAuthParams["stale"] = "FALSE"
    assertThat(challenges[0].authParams).isEqualTo(expectedAuthParams)
  }

  @Test fun testDigestChallengeWithDifferentlyOrderedAuthParams() {
    val headers =
      Headers.Builder()
        .add(
          "WWW-Authenticate",
          "Digest qop=\"auth\", realm=\"myrealm\", nonce=\"fjalskdflwejrlask" +

    val responseCode = userResponse.code

    val method = userResponse.request.method
    when (responseCode) {
      HTTP_PROXY_AUTH -> {
        val selectedProxy = route!!.proxy
        if (selectedProxy.type() != Proxy.Type.HTTP) {
          throw ProtocolException("Received HTTP_PROXY_AUTH (407) code while not using proxy")
        }
        return client.proxyAuthenticator.authenticate(route, userResponse)
      }

      }
    }
  }

  @ExperimentalOkHttpApi
  companion object {
    private const val CLIENT_AUTH_NONE = 0
    private const val CLIENT_AUTH_REQUESTED = 1
    private const val CLIENT_AUTH_REQUIRED = 2

    private val UNTRUSTED_TRUST_MANAGER =
      object : X509TrustManager {
        @Throws(CertificateException::class)

   * Otherwise this returns an empty list of challenges.
   *
   * If a challenge uses the `token68` variant instead of auth params, there is exactly one
   * auth param in the challenge at key null. Invalid headers and challenges are ignored.
   * No semantic validation is done, for example that `Basic` auth must have a `realm`
   * auth param, this is up to the caller that interprets these challenges.
   */
  fun challenges(): List<Challenge> {

    val nextTunnelRequest =
      createTunnel()
        ?: return ConnectResult(plan = this) // Success.

    // The proxy decided to close the connection after an auth challenge. Retry with different
    // auth credentials.
    rawSocket?.closeQuietly()

    val nextAttempt = attempt + 1
    return when {
      nextAttempt < MAX_TUNNEL_ATTEMPTS -> {
        user.callConnectEnd(route, null)

at the URL `https://minio-node-1.example.org`, the redirect URL will be `https://minio-node-1.example.org/oauth_callback` and all is well.

For deployments with a load-balancer (LB), it is required that the LB is configured to send requests from the same user/client-app to the same backend MinIO server (at least for the initial login request and subsequent redirection, as the OpenID auth flow's state parameter is currently local to the MinIO server). For this setup, set the `MINIO_BROWSER_REDIRECT_URL`...

   * This avoids sending potentially sensitive data like HTTP cookies to the proxy unencrypted.
   *
   * In order to support preemptive authentication we pass a fake "Auth Failed" response to the
   * authenticator. This gives the authenticator the option to customize the CONNECT request. It can
   * decline to do so by returning null, in which case OkHttp will use it as-is.
   */

# Installing pip packages
RUN pip install --upgrade setuptools; \
    pip install altgraph appdirs cachetools certifi cffi chardet colorama \
    cryptography cycler Cython decorator google-api-python-client \
    google-auth google-auth-httplib2 grpcio httplib2 idna ipython-genutils \
    kiwisolver macholib matplotlib nose numpy packaging pandas pickleshare pip \
    prompt-toolkit protobuf psutil pyasn1 pyasn1-modules pycparser Pygments \