http.Request

http.Request is a fundamental component of Go's web programming toolkit. It encapsulates all the information received from an incoming HTTP request and allows you to process and read the data.

What you need to know When your handler function is called, it receives an http.Request pointer that contains everything about the request:

func handler(w http.ResponseWriter, r *http.Request) {
    // r contains all the request information
}

Key Features The request objects gives you access to:

• Request Method: via r.Method
• URL and Path: via r.URL
• Headers: via r.Header.Get("header-name")
• Query Params: via r.URL.Query().Get("param")
• Form Data: via r.ParseForm()
• Request Body: via io.ReadAll(r.Body))
• Path Variables: via r.PathValue("variable-name")

Understanding the http.Request type is crucial because it's the gateway to all client information. When building a web application you will constantly work with the request object.

I prefer not to explain all the possible methods and fields. We will focus to the ones that solve the immediate problem. As we build a more complex application, we will discover and use more and more of the http.Request functionality.