Add CORS support to minio s3 server

pkg/server/api/generic-handlers.go

@@ -22,6 +22,7 @@ import (
 	"time"
 
 	"github.com/minio/minio/pkg/auth"
+	"github.com/rs/cors"
 )
 
 type contentTypeHandler struct {
@@ -150,6 +151,10 @@ func (h validateAuthHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func CorsHandler(h http.Handler) http.Handler {
+	return cors.Default().Handler(h)
+}
+
 // IgnoreResourcesHandler -
 // Ignore resources handler is wrapper handler used for API request resource validation
 // Since we do not support all the S3 queries, it is necessary for us to throw back a

pkg/server/router.go

@@ -85,6 +85,7 @@ func registerCustomMiddleware(mux http.Handler, conf api.Config) http.Handler {
 		api.IgnoreResourcesHandler,
 		api.ValidateAuthHeaderHandler,
 		api.LoggingHandler,
+		api.CorsHandler,
 		// Add new your new middleware here
 	)