What is a status code 0?

What is a status code 0?

An HTTP response code of 0 indicates that the AJAX request was cancelled. This can happen either from a timeout, XHR abortion or a firewall stomping on the request. A timeout is common, it means the request failed to execute within a specified time.

Which HTTP response status code indicates that the user is not authenticated to access the site?

The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource. See Basic access authentication and Digest access authentication. 401 semantically means “unauthorised”, the user does not have valid authentication credentials for the target resource.

Which HTTP status code is reserved for successful responses?

HTTP response status codes indicate whether a specific HTTP request has been successfully completed. Responses are grouped in five classes: Informational responses ( 100 – 199 ) Successful responses ( 200 – 299 )

Which series will the HTTP response code belong to in case the server wants to indicate a failure?

The 5xx series of status codes is for representing problems on the server side. In most cases, these codes mean the server is not in a state to run the client’s request or even see whether it’s correct, and that the client should retry its request later.

How can I get HTTP status code?

Just use Chrome browser. Hit F12 to get developer tools and look at the network tab. Shows you all status codes, whether page was from cache etc.

Which of the following series of HTTP response codes notifies the client than an error has occurred?

4xx – Client error. These HTTP status codes indicate that an error has occurred and the client browser appears to be at fault. For example, the client browser may have requested a page that doesn’t exist.

What is the HTTP status code shown when a file on a Web server Cannot be found?

If the server does not know, or has no facility to determine, whether or not the condition is permanent, the status code 404 (Not Found) SHOULD be used instead. This response is cacheable unless indicated otherwise.

Is 0 a valid HTTP status code?

The server will never return a status of 0 as this is not a valid HTTP status code. In your case, you are appearing to get a status code of 0 because the request is timing out and 0 is just the default value for the property.

What is the meaning of HTTP response 0?

HTTP response 0 is not standard HTTP response. But it indicates that client could not connect with server and hence forth time out happened. Show activity on this post. Sometimes Browser respond to http error handler with Error Object, that have status set to 0, even if you can see 404, 401, 500 etc. error status in network.

Why is my HTTP status 0 not working?

the thing is, status: 0 is slightly generic, and their could be more use cases that trigger an empty response body. It’s an API status, not an HTTP status. If there was no HTTP response, there was no HTTP status code in it.

What happens if the HTTP status code is 0 or 408?

However, it will still fail with an apparent status code of 0. Note that in cases where the status code is 0, the real error is captured in the returned NSError object, not the NSHTTPURLResponse. HTTP status 408 is pretty uncommon in my experience.

Why is the server returning a status code of 0?

The server will never return a status of 0 as this is not a valid HTTP status code. In your case, you are appearing to get a status code of 0 because the request is timing out and 0 is just the default value for the property.