add log

main.go

@@ -88,6 +88,10 @@ func proxyHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if req.Method == "eth_getBalance" && len(req.Params) > 0 {
+		// get remote ip from header
+		xForwardedFor := r.Header.Get("X-Forwarded-For")
+		realIp := r.Header.Get("X-Real-IP")
+		log.Printf("eth_getBalance request from %s, X-Real-IP: %s, X-Forwarded-For: %s, address: %v", r.RemoteAddr, realIp, xForwardedFor, req.Params[0])
 		address, ok := req.Params[0].(string)
 		if !ok {
 			forwardToBackend(w, body)
@@ -99,6 +103,7 @@ func proxyHandler(w http.ResponseWriter, r *http.Request) {
 				Id:      req.Id,
 				Result:  "0x0",
 			}
+			log.Printf("stop forward to rpc on eth_getBalance request from %s, X-Real-IP: %s, X-Forwarded-For: %s, address: %v", r.RemoteAddr, realIp, xForwardedFor, req.Params[0])
 			w.Header().Set("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(resp)
 			return