Store online peers when joining a worktree

zed-rpc/proto/zed.proto

@@ -47,14 +47,12 @@ message OpenWorktree {
 message OpenWorktreeResponse {
     Worktree worktree = 1;
     uint32 replica_id = 2;
-    uint32 host_peer_id = 3;
+    repeated Peer peers = 3;
 }
 
 message AddGuest {
     uint64 worktree_id = 1;
-    uint32 peer_id = 2;
-    uint32 replica_id = 3;
-    User user = 4;
+    Peer guest = 2;
 }
 
 message RemoveGuest {
@@ -62,6 +60,11 @@ message RemoveGuest {
     uint32 peer_id = 2;
 }
 
+message Peer {
+    uint32 peer_id = 1;
+    uint32 replica_id = 2;
+}
+
 message OpenBuffer {
     uint64 worktree_id = 1;
     string path = 2;

zed-rpc/src/peer.rs

@@ -26,7 +26,7 @@ type BoxedWriter = Pin<Box<dyn AsyncWrite + 'static + Send>>;
 type BoxedReader = Pin<Box<dyn AsyncRead + 'static + Send>>;
 
 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
-pub struct ConnectionId(u32);
+pub struct ConnectionId(pub u32);
 
 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
 pub struct PeerId(pub u32);