CORS can be tackled quickly with the understanding of a few HTTP headers.
Let's discuss them in a bit more detail. π§΅ππ»
Let's discuss them in a bit more detail. π§΅ππ»
We are going to cover HTTP request headers first, and then we will jump onto HTTP response headers.
π HTTP Request Headers
The client can use a few HTTP request methods with their API calls in order to make maximum use of the Cross-Origin resource sharing feature.
The client can use a few HTTP request methods with their API calls in order to make maximum use of the Cross-Origin resource sharing feature.
1οΈβ£ Origin
The Origin header indicates the origin of the request. Browsers add the Origin request header to all cross-origin requests.
The Origin header indicates the origin of the request. Browsers add the Origin request header to all cross-origin requests.
2οΈβ£ Access-Control-Request-Method
Access-Control-Request-Method header is used with the preflight request to let the server know which method will be used in the main request.
For example,
Access-Control-Request-Method: POST
Access-Control-Request-Method header is used with the preflight request to let the server know which method will be used in the main request.
For example,
Access-Control-Request-Method: POST
π HTTP Response Headers
The server sends Access-Control-* HTTP headers for cross-origin requests. ππ»
The server sends Access-Control-* HTTP headers for cross-origin requests. ππ»
1οΈβ£ Access-Control-Allow-Origin
Access-Control-Allow-Origin tells the browser which origin value is allowed to access the resources.
For example,
Access-Control-Allow-Origin: <origin> | *
The wildcard (*) indicates that all the origins can access the resources.
Access-Control-Allow-Origin tells the browser which origin value is allowed to access the resources.
For example,
Access-Control-Allow-Origin: <origin> | *
The wildcard (*) indicates that all the origins can access the resources.
2οΈβ£ Access-Control-Max-Age
The Access-Control-Max-Age header indicates the amount of time in which the result of the preflight request can be cached.
After the specified time, the browser needs to send a new preflight request.
The Access-Control-Max-Age header indicates the amount of time in which the result of the preflight request can be cached.
After the specified time, the browser needs to send a new preflight request.
3οΈβ£ Access-Control-Allow-Credentials
Access-Control-Allow-Credentials is used with the response of a preflight request which indicates whether the actual request can be made using credentials.
Access-Control-Allow-Credentials is used with the response of a preflight request which indicates whether the actual request can be made using credentials.
4οΈβ£ Access-Control-Allow-Methods
The Access-Control-Allow-Methods header indicates which methods are allowed to access the cross-origin resource. It is sent in response to a preflight request.
For example,
Access-Control-Allow-Methods: POST
The Access-Control-Allow-Methods header indicates which methods are allowed to access the cross-origin resource. It is sent in response to a preflight request.
For example,
Access-Control-Allow-Methods: POST
Developing a basic understanding of CORS can save you from hours of debugging.
Read this complete thread on "Introduction to CORS"
Read this complete thread on "Introduction to CORS"
https://twitter.com/Rapid_API/status/1454165852660682757?s=20
With that said, this is the end of this thread. We hope you find it helpful. ππ
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