HTTP Responses
An HTTP response contains a result code, header fields, and a body.
The HTTP protocol expects the result code and all header fields to be returned before any body content.
Some commonly used status codes include:
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404—
indicates that the requested resource is not available.
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401—
indicates that the request requires HTTP authentication.
-
500—
indicates an error inside the HTTP server which prevented it from fulfilling the request.
-
503—
indicates that the HTTP server is temporarily overloaded, and unable to handle the request.
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