HTTP headers that developers should be aware of.
Thread🧵👇
Thread🧵👇
1️⃣ Accept
A client-side header that defines the type of data the client expects from the server.
This means the server won’t waste time returning a data type the client cannot use.
A client-side header that defines the type of data the client expects from the server.
This means the server won’t waste time returning a data type the client cannot use.
2️⃣ Authorization
A client-side header that passes the credentials to the server.
This is not the same as authentication. The server can only authenticate the user after it checks the authorization credentials.
A client-side header that passes the credentials to the server.
This is not the same as authentication. The server can only authenticate the user after it checks the authorization credentials.
3️⃣ Content-Type
Specifies the type of content the server returns, e.g., JSON, text, form-data, etc.
Specifies the type of content the server returns, e.g., JSON, text, form-data, etc.
4️⃣ Accept-Encoding
Tells the server which encoding method the client can understand. This refers to how the data is compressed in transfer.
Tells the server which encoding method the client can understand. This refers to how the data is compressed in transfer.
5️⃣ Access-Control-Allow-Origin
A server-side header that lists the server’s accepted web addresses, with which it only expects to interact.
Any client-side errors referencing ‘cross-origin-request’ (CORS) may be linked to this header.
A server-side header that lists the server’s accepted web addresses, with which it only expects to interact.
Any client-side errors referencing ‘cross-origin-request’ (CORS) may be linked to this header.
6️⃣ Access-Control-Allow-Methods
A cross-origin resource sharing (CORS) header that indicates which HTTP methods are allowed to access the resource.
A cross-origin resource sharing (CORS) header that indicates which HTTP methods are allowed to access the resource.
7️⃣ Accept-Language
Used to state which human language or languages are understood by the client so that the user can choose their preferred.
Used to state which human language or languages are understood by the client so that the user can choose their preferred.
8️⃣ Content-Length
Indicates the size of the message body in bytes and can be used in either requests or responses.
Indicates the size of the message body in bytes and can be used in either requests or responses.
9️⃣ Cache-Control
This server and client-side header communicates how the cache should be controlled using directives and values.
Some examples of the various directives:
- Cache-Control: no-store
- Cache-Control: max-age
- Cache-control: public
This server and client-side header communicates how the cache should be controlled using directives and values.
Some examples of the various directives:
- Cache-Control: no-store
- Cache-Control: max-age
- Cache-control: public
🔟 Host
A request header that specifies the host (domain name) and port number of the server being requested.
A request header that specifies the host (domain name) and port number of the server being requested.
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