The POST method is used to send data to the server to create/update a resource on the server. In this HTTP POST request example, the Content-Type request header indicates the data type in the body of the POST message, and the Content-Length request header indicates the size of the data in the body of the POST request. The data is stored in the body of the POST message.
The Hypertext Transfer Protocol (HTTP) is the core of the World Wide Web and provides communication between HTTP clients and servers. HTTP works as a request-response protocol between a client and a server in a format that both HTTP clients and servers can understand. For example, the browser sends an HTTP POST request to the server when the user uploads a document to the server and includes the document in the body of the POST message; the server then returns a response to the browser and indicates whether the server accepts or rejects the document, with a response status message.
What is the HTTP POST request method used for?
The HTTP POST request method is used to send data to the server or to create or update a resource on the server. The POST request is usually used when submitting an HTML form or when uploading data to a server. The HTTP POST request may or may not contain data. Data sent to the server with POST requests are passed in the body of the request message. The type of the body of the POST request is indicated by the Content-Type header, and the length is indicated with the the Content-Length header.
HTTP POST Request Examples
An example of sending an HTML form to the server.
POST HTML Form Example
POST /echo/post/form HTTP/1.1
- POST requests are used to create or update a resource on the server. - POST messages can contain any type of data of unlimited size. - POST method is not idempotent, which means that sending the same POST request multiple times can further affect the state of the server.