multi_fix: harden peer/session handling, tighten foreign-network trust, and improve web client metadata (#1999)

* machine-id should be scoped unbder same user-id
* feat: report device os metadata to console
* fix sync root key cause packet loss
* fix tun packet not invalid
* fix faketcp cause lat jitter
* fix some packet not decrypt
* fix peer info patch, improve performance of update self info
* fix foreign credential identity mismatch handling

easytier/src/peers/peer_map.rs

@@ -278,13 +278,9 @@ impl PeerMap {
 
     pub async fn list_peers_with_conn(&self) -> Vec<PeerId> {
         let mut ret = Vec::new();
-        let peers = self.list_peers();
-        for peer_id in peers.iter() {
-            let Some(peer) = self.get_peer_by_id(*peer_id) else {
-                continue;
-            };
-            if !peer.list_peer_conns().await.is_empty() {
-                ret.push(*peer_id);
+        for item in self.peer_map.iter() {
+            if item.value().has_live_conns() {
+                ret.push(*item.key());
             }
         }
         ret
@@ -308,6 +304,11 @@ impl PeerMap {
             .and_then(|p| p.get_peer_identity_type())
     }
 
+    pub fn get_peer_public_key(&self, peer_id: PeerId) -> Option<Vec<u8>> {
+        self.get_peer_by_id(peer_id)
+            .and_then(|p| p.get_peer_public_key())
+    }
+
     pub async fn close_peer_conn(
         &self,
         peer_id: PeerId,