Update reverse proxy to handle options requests

ethereum-optimism · Jul 31, 2024 · 29af893 · 29af893
1 parent 87cd75f
commit 29af893
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/opsimulator/opsimulator.go b/opsimulator/opsimulator.go
@@ -142,6 +142,15 @@ func (a *OpSimulator) Stopped() bool {
 
 func handler(proxy *httputil.ReverseProxy) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == http.MethodOptions {
+			// handle preflight requests
+			w.Header().Set("Access-Control-Allow-Origin", "*")
+			w.Header().Set("Access-Control-Allow-Methods", "*")
+			w.Header().Set("Access-Control-Allow-Headers", "*")
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+
 		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, "Failed to read request body", http.StatusInternalServerError)