The HTTP GET Method and Using a Body With the Request
The Hypertext Transfer Protocol (HTTP) has several methods, or "verbs," to allow clients and servers to communicate effectively. One of the most commonly used methods is the GET method, which retrieves data from a server. While HTTP specifications do not forbid sending a body with a GET request, doing so is non-standard and can lead to various problems.
Background: What Is the HTTP GET Method?
In HTTP, the GET method is designed to retrieve data from a server without causing any side effects. Typically, this data is fetched based on parameters sent as part of the URL's query string. For instance, in a URL like http://example.com/?key=value represents a parameter passed to the server.