How to handle preflight CORS requests on a Go server

Question

So I\'m writing this RESTful backend in Go, which will be called with cross-site HTTP requests, i.e. from content served by another site (actually, just another port, but th

Answer 1

gorilla/handlers also has a nice CORS handler: cors.go

Example usage:

import (
    "net/http"

    "github.com/gorilla/handlers"
    "github.com/gorilla/mux"
)

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/users", UserEndpoint)
    r.HandleFunc("/projects", ProjectEndpoint)

    // Apply the CORS middleware to our top-level router, with the defaults.
    http.ListenAndServe(":8000", handlers.CORS()(r))
}