Socket used for communication with the node. May not own a Sock object (after CloseSocketDisconnect() or during tests). shared_ptr (instead of unique_ptr) is used to avoid premature close of the underlying file descriptor by one thread while another thread is poll(2)-ing it for activity.
Declared in <net.h>
[[guarded_by(0x7fb96f08ddc8), guarded_by(0x7fb96f19d1e8), guarded_by(0x7fb96713b498), guarded_by(0x7fb96b052ad8), guarded_by(0x7fb95ed2b6f8), guarded_by(0x7fb96c8ad798), guarded_by(0x7fb95fd99f58), guarded_by(0x7fb94c275818), guarded_by(0x7fb966e24908), guarded_by(0x7fb97a56bc48), guarded_by(0x7fb96e77de08)]]
std::shared_ptr<Sock> m_sock;https://github.com/bitcoin/bitcoin/issues/21744 for details.