Michael Brown c8cae7cc17 [http] Notify data transfer interface when underlying connection is ready
HTTP implements xfer_window_changed() on the underlying server
connection using http_step(), which does not propagate the window
change notification to the data transfer interface.  This breaks the
multipath-capable SAN boot code, which relies on the window change
notification to discover that the HTTP block device is ready for
commands to be issued.

Fix by sending xfer_window_changed() in http_step() once the
underlying connection has been determined to be ready.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2017-03-28 23:40:52 +03:00
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