GWT Sessions Package - new session for each request

main.go

package main

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

	"github.com/gorilla/sessions"
)

var store = sessions.NewCookieStore([]byte(os.Getenv("SESSION_KEY")))

func indexofstring(slice []string, value string) int {
	for p, v := range slice {
		if v == value {
			return p
		}
	}
	return -1
}

func loginHandler(w http.ResponseWriter, r *http.Request) {
	session, err := store.Get(r, "gosession")
	if err != nil {
		fmt.Fprintf(w, "{\"error\":-1,\"errorString\":\"%s\"}", err.Error())
		return
	}

	w.Header().Set("Content-Type", "application/json")
	userid := []int{1000, 1001}
	username := []string{"timblack@hisemail.com", "matildasurname85@hotmail.com"}
	password := []string{"iC0Gods!", "password"}
	userClass := []int{0, 1} // 0 = consultant, 1 = client

	if indexofstring(username, r.FormValue("email")) == -1 {
		fmt.Fprintf(w, "{\"error\":1}")
	} else {
		unameIndex := indexofstring(username, r.FormValue("email"))
		session.Values["userid"] = userid[unameIndex]

		if password[unameIndex] == r.FormValue("password") {
			fmt.Fprintf(w, "{\"userclass\": %d,\"userid\": %d,\"isnew\":%t}",
				userClass[unameIndex], session.Values["userid"], session.IsNew)
		} else {
			fmt.Fprintf(w, "{\"error\":1}")
		}
	}

	err = session.Save(r, w)
	if err != nil {
		fmt.Fprintf(w, "{\"error\":-1,\"errorString\":\"%s\"}", err.Error())
		return
	}
}

func main() {
	http.HandleFunc("/login", loginHandler)
	log.Fatal(http.ListenAndServe(":8080", nil))
}