Implements a server push operation, which updates a page at specific intervals.
Specifies the number of seconds,
, to wait before the next call to
the page-drawing subroutine.
Runs the subroutine
to draw the last page update of a server push operation.
routine is invoked when the
false. A reference to a subroutine glob should be provided for this
parameter, but the name of the subroutine is also acceptable.
is the name of the subroutine responsible for redrawing
and counting the number of iterations (if you want repeated updating). The
routine ends when
returns false (or when the
subroutine is invoked). A reference
to a subroutine glob should be provided for this parameter, but
the name of the subroutine is also acceptable.
Specifies the content type of the pushed data. The default value