url format improved

models/peer/peer_cache.go

@@ -132,6 +132,7 @@ func (p *PeerCache) exec(url string, method tools.METHOD, body map[string]interf
 	}
 	var m map[string]interface{}
 	json.Unmarshal(b, &m)
+	fmt.Printf("Response: %v\n", err)
 	if err != nil {
 		return err
 	}