There are a total of 15 HTTP request methods (HTTP Request Method), and according to the HTTP standard, multiple request methods can be used in HTTP requests. HTTP/1.0 defined three request methods: GET, POST, and HEAD. HTTP/1.1 introduced five additional request methods: OPTIONS, PUT, DELETE, TRACE, and CONNECT.
| ID | Method | Description |
|---|---|---|
| 1 | GET | Requests a specified resource and returns the entity-body. |
| 2 | HEAD | Similar to GET, but without the response body, used to retrieve response headers. |
| 3 | POST | Submits data to be processed to the specified resource (e.g., form submission or file upload). Data is included in the request body. POST requests may lead to the creation of new resources and/or modification of existing resources. |
| 4 | PUT | Replaces the content of the specified resource with data sent from the client. |
| 5 | DELETE | Requests the server to delete the specified resource. |
| 6 | CONNECT | Reserved in HTTP/1.1 for proxy servers that can convert the connection to a tunnel. |
| 7 | OPTIONS | Allows the client to determine the communication options available on the server. |
| 8 | TRACE | Echoes the request received by the server, primarily used for testing or diagnostics. |
| 9 | PATCH | Contains a set of instructions describing how to modify the resource represented by the URI. |
| 10 | MOVE | Requests the server to move the specified resource to another location. |
| 11 | COPY | Requests the server to copy the specified resource to another location. |
| 12 | LINK | Requests the server to establish a link relationship. |
| 13 | UNLINK | Requests the server to sever a link relationship. |
| 14 | WRAPPED | Allows the client to send encapsulated requests. |
| 15 | Extension-Method | Allows for the addition of new methods without changing the protocol. |