redirect gin http to https using unrolled/secure

gin-secure-https.go

// gin will throw following for the first time due to secure initiate a http.Redirect but gin is unaware of it
// [GIN-debug] [WARNING] Headers were already written. Wanted to override status code 301 with 200

package main

import (
	"github.com/gin-gonic/gin"
	"github.com/unrolled/secure"
)

func main() {
	secureFunc := func() gin.HandlerFunc {
		return func(c *gin.Context) {
			secureMiddleware := secure.New(secure.Options{
				SSLRedirect: true,
				SSLHost:     "localhost:8888",
			})
			err := secureMiddleware.Process(c.Writer, c.Request)

			// If there was an error, do not continue.
			if err != nil {
				return
			}

			c.Next()
		}
	}()

	router := gin.Default()
	router.Use(secureFunc)

	router.GET("/", func(c *gin.Context) {
		c.String(200, "X-Frame-Options header is now `DENY`.")
	})

	// HTTP
	go router.Run(":8066")

	router.RunTLS(":8888", "server.pem", "server.key")
}