* tip: Consejo (do not translate to "tip")
* check: Revisa (do not translate to "chequea" or "comprobación)
* Cross-Origin Resource Sharing: Cross-Origin Resource Sharing (do not translate to "Compartición de Recursos de Origen Cruzado")
* Release Notes: Release Notes (do not translate to "Notas de la Versión")
* Semantic Versioning: Semantic Versioning (do not translate to "Versionado Semántico")

# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS or "Cross-Origin Resource Sharing"</a> refers to the situations when a frontend running in a browser has JavaScript code that communicates with a backend, and the backend is in a different "origin" than the frontend.

## Origin { #origin }

	case authTypeSigned, authTypePresigned:
		region := globalSite.Region()
		switch action {
		case policy.GetBucketLocationAction, policy.ListAllMyBucketsAction:
			region = ""
		}
		if s3Err = isReqAuthenticated(ctx, r, region, serviceS3); s3Err != ErrNone {
			return s3Err
		}
		cred, owner, s3Err = getReqAccessKeyV4(r, region, serviceS3)
	}
	if s3Err != ErrNone {
		return s3Err
	}

     * Headers include allowed origin, methods, headers, max age, and credentials setting.
     *
     * @param origin the origin of the request
     * @param request the servlet request
     * @param response the servlet response to add CORS headers to
     */
    @Override
    public void process(final String origin, final ServletRequest request, final ServletResponse response) {

        assertEquals(0, mockResponse.getStatus());
    }

    // Test with valid Origin and CorsHandler found (PUT request)
    public void test_doFilter_withCorsHandler_put() throws IOException, ServletException {
        String origin = "http://example.com";
        mockRequest.setHeader("Origin", origin);
        mockRequest.setMethod("PUT");
        TestCorsHandler handler = new TestCorsHandler();

    /** Local key for accessing this memory region */
    protected final int localKey;
    /** Remote key for remote RDMA access */
    protected final int remoteKey;
    /** Virtual address of the memory region */
    protected final long address;
    /** Flag indicating if the memory region is still valid */
    protected volatile boolean valid;

    /**
     * Create new RDMA memory region
     *

            RdmaMemoryRegion region = availableSendRegions.poll();
            if (region != null) {
                region.getBuffer().clear();
                return region;
            }
        }
        
        // Allocate new buffer
        ByteBuffer buffer = ByteBuffer.allocateDirect(Math.max(minSize, sendBufferSize));
        RdmaMemoryRegion region = provider.registerMemory(buffer,

        if (logger.isDebugEnabled()) {
            logger.debug("Loaded {}", origin);
        }
        handerMap.put(origin, handler);
    }

    /**
     * Gets the CORS handler for the specified origin.
     * If no specific handler is found, returns the wildcard handler.
     *
     * @param origin the origin to look up
     * @return the CORS handler for the origin, or null if none found
     */

        String origin = "https://example.com";
        TestCorsHandler handler1 = new TestCorsHandler("handler1");
        TestCorsHandler handler2 = new TestCorsHandler("handler2");

        // Execute
        corsHandlerFactory.add(origin, handler1);
        corsHandlerFactory.add(origin, handler2);

        // Verify - should have the latest handler
        CorsHandler result = corsHandlerFactory.get(origin);

        RdmaMemoryRegion region = provider.registerMemory(buffer, access);
        assertNotNull(region, "Memory region should not be null");
        assertEquals(buffer, region.getBuffer(), "Buffer should match");
        assertEquals(1024, region.getSize(), "Size should match buffer size");
        assertTrue(region.hasAccess(RdmaAccess.LOCAL_READ), "Should have local read access");