add client data cache for ip and username

src/server/mod.rs

@@ -1,7 +1,10 @@
-use crate::net::{
-    ClientMsg, Msg, ServerMsg,
-    server::{ClientSender, ConAccepter, listen},
-    transfer::RecvHandler,
+use crate::{
+    net::{
+        ClientMsg, Msg, ServerMsg,
+        server::{ClientSender, ConAccepter, listen},
+        transfer::RecvHandler,
+    },
+    rsc::DataDir,
 };
 use std::{
     collections::HashMap,
@@ -14,8 +17,8 @@ use tokio::sync::RwLock;
 
 #[tokio::main]
 pub async fn run_server() {
-    let dirs = directories_next::ProjectDirs::from("", "", "openworm").unwrap();
-    let path = dirs.data_local_dir();
+    let dir = DataDir::default();
+    let path = dir.get();
     let handler = ServerListener {
         msgs: Default::default(),
         senders: Default::default(),