netutil

func GracefulCloseConn ¶

func GracefulCloseConn(conn net.Conn, abort <-chan struct{}, gracePeriod time.Duration)

GracefulCloseConn performs a TCP half-close (CloseWrite), giving the remote end time to read any buffered data, then fully closes after gracePeriod. The abort channel can be used to skip the grace period; if nil or never closed, the full grace period is used. Falls back to immediate close for non-TCP connections.