appc: fix DomainRoutes copy

The non-referential copy destination doesn't extend the map contents, but also the read of a non-key is returning a zero value not bound to the map contents in any way. Updates tailscale/corp#15657 Signed-off-by: James Tucker <james@tailscale.com>
2023-11-15 11:50:13 -08:00
parent b8ac3c5191
commit 245ddb157b
2 changed files with 17 additions and 1 deletions
@@ -113,7 +113,7 @@ func (e *AppConnector) DomainRoutes() map[string][]netip.Addr {

 	drCopy := make(map[string][]netip.Addr)
 	for k, v := range e.domains {
-		copy(drCopy[k], v)
+		drCopy[k] = append(drCopy[k], v...)
 	}

 	return drCopy