As I recall, cancelling out of a Recv() as in a network read can be achieved by setting an expiry time in the past. i.e. on a net.Conn one can use SetReadDeadl

As I recall, cancelling out of a Recv() as in a network read can be achieved by setting an expiry time in the past. i.e. on a net.Conn one can use SetReadDeadline() to unblock/cancel a Read().