The OPTIONS method in an API call is used to describe the communication options available for a specific resource or server. It is primarily used for: CORS Preflight Requests: When a client (like a browser) makes a cross-origin request, it sends an OPTIONS request first to verify the server's permissions. This preflight request checks: Which HTTP methods are allowed (e.g., GET, POST, DELETE). Which headers can be included in the actual request. Whether credentials (e.g., cookies, tokens) are supported. Discovering Supported Methods: The OPTIONS method lets clients discover the allowed HTTP methods (like GET, POST, PUT) for a resource without actually performing the operation. General Configuration: It helps clients configure themselves by providing metadata about the server's capabilities or the resource's constraints.
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The OPTIONS method in an API call is used to describe the communication options available for a specific resource or server. It is primarily used for:
CORS Preflight Requests:
When a client (like a browser) makes a cross-origin request, it sends an OPTIONS request first to verify the server's permissions. This preflight request checks:
Which HTTP methods are allowed (e.g., GET, POST, DELETE).
Which headers can be included in the actual request.
Whether credentials (e.g., cookies, tokens) are supported.
Discovering Supported Methods:
The OPTIONS method lets clients discover the allowed HTTP methods (like GET, POST, PUT) for a resource without actually performing the operation.
General Configuration:
It helps clients configure themselves by providing metadata about the server's capabilities or the resource's constraints.
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