cors – Flamego

cors

The cors middleware configures Cross-Origin Resource Sharing for Flame instances.

You can read source code of this middleware on GitHub and API documentation on pkg.go.dev.

Installation

go get github.com/flamego/cors

Usage examples

The cors.CORS works out-of-the-box with an optional cors.Options:

package main

import (
	"github.com/flamego/cors"
	"github.com/flamego/flamego"
)

func main() {
	f := flamego.Classic()
	f.Get("/",
		cors.CORS(),
		func(c flamego.Context) string {
			return "This endpoint can be shared cross-origin"
		},
	)
	f.Run()
}

The cors.Options can be used to further customize the behavior of the middleware:

package main

import (
	"github.com/flamego/cors"
	"github.com/flamego/flamego"
)

func main() {
	f := flamego.Classic()
	f.Get("/",
		cors.CORS(
            cors.Options{
			    AllowDomain: []string{"cors.example.com"},
		    },
        ),
		func(c flamego.Context) string {
			return "This endpoint can be shared cross-origin"
		},
	)
	f.Run()
}