allow sync conn with conn list when conn bitmap is too large (#1508)

easytier/src/proto/common.proto

@@ -203,6 +203,7 @@ message PeerFeatureFlag {
   bool avoid_relay_data = 2;
   bool kcp_input = 3;
   bool no_relay_kcp = 4;
+  bool support_conn_list_sync = 5;
 }
 
 enum SocketType {

easytier/src/proto/peer_rpc.proto

@@ -39,6 +39,14 @@ message RouteConnBitmap {
   bytes bitmap = 2;
 }
 
+message RouteConnPeerList {
+  message PeerConnInfo {
+    PeerIdVersion peer_id = 1;
+    repeated uint32 connected_peer_ids = 2;
+  }
+  repeated PeerConnInfo peer_conn_infos = 1;
+}
+
 message RoutePeerInfos { repeated RoutePeerInfo items = 1; }
 
 message ForeignNetworkRouteInfoKey {
@@ -82,7 +90,10 @@ message SyncRouteInfoRequest {
   uint64 my_session_id = 2;
   bool is_initiator = 3;
   RoutePeerInfos peer_infos = 4;
-  RouteConnBitmap conn_bitmap = 5;
+  oneof conn_info {
+    RouteConnBitmap conn_bitmap = 5;
+    RouteConnPeerList conn_peer_list = 7;
+  }
   RouteForeignNetworkInfos foreign_network_infos = 6;
 }
 

easytier/src/proto/peer_rpc.rs

@@ -38,6 +38,18 @@ impl PeerGroupInfo {
     }
 }
 
+impl From<RouteConnBitmap> for sync_route_info_request::ConnInfo {
+    fn from(val: RouteConnBitmap) -> Self {
+        Self::ConnBitmap(val)
+    }
+}
+
+impl From<RouteConnPeerList> for sync_route_info_request::ConnInfo {
+    fn from(val: RouteConnPeerList) -> Self {
+        Self::ConnPeerList(val)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;