# listener(_:shouldAcceptNewConnection:from:) Returns a Boolean value that indicates whether to accept a new connection from the guest operating system. ``` optional func listener(_ listener: VZVirtioSocketListener, shouldAcceptNewConnection connection: VZVirtioSocketConnection, from socketDevice: VZVirtioSocketDevice) -> Bool ``` ## Parameters `listener` The listener object that monitors the associated port. `connection` The object that contains information about the proposed connection. Use this object to fetch port information. `socketDevice` The Virtio socket device that requested the connection. ## Return Value to establish the connection, or to reject it. ## Discussion Use your method’s implementation to quickly determine whether to accept or reject connection attempts. A typical implementation verifies that a connection between the specified ports is permissible. Return a result as quickly as possible, and don’t perform any long-running operations in this method. If you don’t implement this method, the virtual machine refuses all connection requests as if this method returned . --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)