Bare Go Server

Bare Go Server main.go

// go run main.go
// create a static folder and create `static.html`

package main

import (
	"fmt"
	"log"
	"net/http"
)

func formHandler(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		fmt.Fprintf(w, "ParseForm() err: %v", err)
		return
	}

	fmt.Fprintf(w, "POST request successful \n")

	name, address := r.FormValue("name"), r.FormValue("address")

	fmt.Fprintf(w, "Name = %s\n", name)
	fmt.Fprintf(w, "Address = %s\n", address)
}

func helloHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Printf("URL: %s\n", r.URL.Path)
	fmt.Printf("Method: %s\n", r.Method)

	if r.Method != "GET" {
		http.Error(w, "method is not supported", http.StatusNotFound)
		return
	}

	fmt.Fprintf(w, "hello!")
}

func iqhandler(w http.ResponseWriter, r *http.Request) {
	if r.Method != "GET" {
		http.Error(w, "method is not supported", http.StatusNotFound)
		return
	}
	// `Fprintf` used to format and write text to an output stream, such as a file or a network connection
	fmt.Fprintf(w, "IQ is high ...!")
}

func main() {
	fileServer := http.FileServer(http.Dir("./static"))
	http.Handle("/", fileServer)
	http.HandleFunc("/form", formHandler)
	http.HandleFunc("/hello", helloHandler)
	http.HandleFunc("/iq", iqhandler)

	fmt.Printf("Starting server at port 8080\n")
	if err := http.ListenAndServe(":8080", nil); err != nil {
		log.Fatal(err)
	}
}