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

The minimum requirement of Go is 1.16.

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()
}