How to build CORS enabled REST service in Go lang

Hi Everybody,

There are several ways to implement CORS on go server but I found one of the easiest way to enable CORS (Cross Origin Resource Sharing) on the Go server
- which helps the API to get integrate with the front-end UI easily without getting CORS issue.

package main

import (
    "net/http"
    "github.com/rs/cors"
)

func main() {
    serve_mux := http.NewServeMux()
    serve_mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        w.Header().Set("Content-Type", "application/json")
        w.Write([]byte("{\"Hello\": \"from CORS enabled server\"}"))
    })
    
    handler := cors.Default().Handler(serve_mux)
    http.ListenAndServe(":80", handler)
}

Note : Please do go get github.com/rs/cors since this program uses rs/cors (external library)