...
1 package webserver
2
3 import (
4 "net/http"
5 )
6
7 func corsMiddleware(next http.Handler) http.Handler {
8 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
9 w.Header().Set("Access-Control-Allow-Origin", "http://localhost:4000")
10 w.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
11 w.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, token")
12 if r.Method == "OPTIONS" {
13 w.WriteHeader(http.StatusOK)
14 return
15 }
16 next.ServeHTTP(w, r)
17 })
18 }
19