File: experimental-handlers/cors/simple/main.go ~~~ package main // go get -u github.com/iris-contrib/middleware/... import ( "github.com/kataras/iris" "github.com/iris-contrib/middleware/cors" ) func main() { app := iris.New() crs := cors.New(cors.Options{ AllowedOrigins: []string{"*"}, // allows everything, use that to change the hosts. AllowCredentials: true, }) v1 := app.Party("/api/v1", crs).AllowMethods(iris.MethodOptions) // <- important for the preflight. { v1.Get("/home", func(ctx iris.Context) { ctx.WriteString("Hello from /home") }) v1.Get("/about", func(ctx iris.Context) { ctx.WriteString("Hello from /about") }) v1.Post("/send", func(ctx iris.Context) { ctx.WriteString("sent") }) v1.Put("/send", func(ctx iris.Context) { ctx.WriteString("updated") }) v1.Delete("/send", func(ctx iris.Context) { ctx.WriteString("deleted") }) } app.Run(iris.Addr("localhost:8080")) } ~~~