sendfile simple small files usermessage implementation

client/config.go

@@ -14,7 +14,7 @@ type Config struct {
 	StoragePath        string `json:"storage_path,omitempty"`
 	MaxIdsPerUser      int    `json:"max_ids_per_user,omitempty"`
 	MsgDbRollingPeriod int    `json:"msg_db_rolling_period,omitempty"`
-	Chunksize          int    `json:"chunksize,omitempty"`
+	Chunksize          int64  `json:"chunksize,omitempty"`
 	ServerPollInterval int    `json:"server_poll_interval,omitempty"`
 	// GUI
 	LastOpenChat                string `json:"last_open_chat,omitempty"`