}
		}

		writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
		return
	}

	if !proxy.Proxy { // apply lifecycle rules only locally not for proxied requests
		// Automatically remove the object/version if an expiry lifecycle rule can be applied
		if lc, err := globalLifecycleSys.Get(bucket); err == nil {
			rcfg, err := globalBucketObjectLockSys.Get(bucket)

		return
	}

	jobID := r.Form.Get("id")
	if jobID == "" {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL)
		return
	}

	if _, proxied, _ := proxyRequestByToken(ctx, w, r, jobID, true); proxied {
		return
	}

	if err := globalBatchJobPool.canceler(jobID, true); err != nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrInvalidRequest, err), r.URL)

		// Requests in federated setups for STS type calls which are
		// performed at '/' resource should be routed by the muxer,
		// the assumption is simply such that requests without a bucket
		// in a federated setup cannot be proxied, so serve them at
		// current server.
		if bucket == "" {
			h.ServeHTTP(w, r)
			return
		}

		// MakeBucket requests should be handled at current endpoint

      }
      return false;
    }

    @Override
    public String toString() {
      return paramString(interfaceType, identity);
    }
  }

  /** Subclasses can override to provide different return value for proxied interface methods. */
  @Nullable Object interfaceMethodCalled(Class<?> interfaceType, Method method) {
    throw new UnsupportedOperationException();
  }

     */
    public synchronized Proxy getActiveProxy() {
        if (activeProxy == null) {
            java.util.List<Proxy> proxies = getProxies();
            if (proxies != null && !proxies.isEmpty()) {
                for (Proxy proxy : proxies) {
                    if (proxy.isActive()) {
                        activeProxy = proxy;
                        break;
                    }

      }
      return false;
    }

    @Override
    public String toString() {
      return paramString(interfaceType, identity);
    }
  }

  /** Subclasses can override to provide different return value for proxied interface methods. */
  @Nullable Object interfaceMethodCalled(Class<?> interfaceType, Method method) {
    throw new UnsupportedOperationException();
  }

  The API Server will no longer proxy non-101 responses for upgrade requests. This could break proxied backends (such as an extension API server) that respond to upgrade requests with a non-101 response code. ([#92941](https://github.com/kubernetes/kubernetes/pull/92941), [@tallclair](https://github.com/tallclair)) [SIG API Machinery]
 

* Dual stack services (Phase II of IPv6DualStack feature) are enabled via the IPVS proxier. iptables proxier does not support dualstack yet. Dualstack iptables proxier is WIP and should catchup soon. ([#82091](https://github.com/kubernetes/kubernetes/pull/82091), [@khenidak](https://github.com/khenidak))
    * to enable, kube-proxy must be have the following flags:

Uvicorn will expect the proxy to access Uvicorn at `http://127.0.0.1:8000/app`, and then it would be the proxy's responsibility to add the extra `/api/v1` prefix on top.

## About proxies with a stripped path prefix { #about-proxies-with-a-stripped-path-prefix }

Keep in mind that a proxy with stripped path prefix is only one of the ways to configure it.

  The API Server will no longer proxy non-101 responses for upgrade requests. This could break proxied backends (such as an extension API server) that respond to upgrade requests with a non-101 response code. ([#92941](https://github.com/kubernetes/kubernetes/pull/92941), [@tallclair](https://github.com/tallclair)) [SIG API Machinery]