package middleware import "net/http" func CORSMiddleware() func(http.Header) { return func(header http.Header) { header.Set("Access-Control-Allow-Origin", "*") header.Add("Access-Control-Allow-Headers", "UserHeader1, UserHeader2") header.Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, PATCH") header.Set("Access-Control-Expose-Headers", "Content-Length, Content-Type") } }