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Preflight atlanta3/21/2023 User-Agent: Mozilla/5.0 (compatible MSIE 10.0 Windows NT 6.2 WOW64 Trident/6.0) Origin: Access-Control-Request-Method: PUTĪccess-Control-Request-Headers: content-type, accept The following example sends a preflight request for the origin The request method is set to PUT, and the request headers are set to content-type and accept. This metric does not indicate that your private data has been compromised, but only that the Preflight Queue Request operation succeeded with a status code of 200 (OK). For this reason, if you view metrics in the Azure portal, you'll see AnonymousSuccess logged for Preflight Queue Request. ![]() If you have enabled Azure Storage analytics and are logging metrics, a call to the Preflight Queue Request operation is logged as AnonymousSuccess. It does not require authorization, and it ignores credentials if they're provided. The Preflight Queue Request operation always executes anonymously. Indicates whether the request can be made through credentials. Specifies the length of time that the user agent is allowed to cache the preflight request for future requests. If the preflight request succeeds, this header is set to the value or values specified for the request header Access-Control-Request-Headers. If the preflight request succeeds, this header is set to the value or values specified for the request header Access-Control-Request-Method. Indicates the allowed origin, which matches the origin header in the request if the preflight request succeeds. All standard headers conform to the HTTP/1.1 protocol specification.įor details about preflight request headers, see the CORS specification. The response might also include additional standard HTTP headers. The response for this operation includes the following headers. Status codeĪ successful operation returns status code 200 (OK).įor information about status codes, see Status and error codes. The response includes an HTTP status code and a set of response headers. ![]() If it's not present, the service assumes that the request doesn't include headers. Specifies the request headers that will be sent. The method is checked against the service's CORS rules to determine the failure or success of the preflight request. Specifies the method (or HTTP verb) for the request. The origin is checked against the service's CORS rules to determine the success or failure of the preflight request. Specifies the origin from which the request will be issued. The following table describes required and optional request headers: Request header The preflight request is evaluated at the service level against the service's CORS rules, so the presence or absence of the resource name does not affect the success or failure of the operation. The resource might or might not exist at the time that the preflight request is made. In the case of this operation, the path portion of the URI can be empty, or it can point to any queue resource. The URI must always include the forward slash (/) to separate the host name from the path and query portions of the URI. Replace with the name of the queue resource that will be the target of the request. Replace with the name of your storage account. You can specify Preflight Queue Request as follows. ![]() Queue Storage then accepts or rejects the request.įor more information about CORS and the preflight request, see the CORS specification and CORS support for Azure Storage. If CORS is enabled for Queue Storage, then Queue Storage evaluates the preflight request against the CORS rules that the account owner has configured via Set Queue Service Properties. ![]() The Preflight Queue Request operation queries the Cross-Origin Resource Sharing (CORS) rules for Azure Queue Storage before sending the request.Ī web browser or another user agent sends a preflight request that includes the origin domain, method, and headers for the request that the agent wants to make.
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