Simple Http server

Go, is very productive, lets build a web server in 5 minutes.

Golang web app #

package main

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

const PORT = ":9876"

func main() {
	fmt.Printf("starting the server: %v\n", PORT)

	HomeRoute := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "hello Web")
	})
	log.Fatal(http.ListenAndServe(PORT, HomeRoute))
}

Visit the url, on the port number, and you will print out hello Web

Visit url localhost:9876

hello Web

Theory #

Golang is packages has one called net/http it cnotains a few ways of creating the HTTP server. To create a web server you need 2 things.

• The handler function, it compromises the route and the controller, You can simply implement the Handler interface. in a method. they act like handlers or controllers in other languages or frameworks. so it has a ResponseWriter and pointer to the HttpRequest.
• The server itself is created in the ListenAndServe, on the given address. This method requires the Handler. you provided.