Header function

Can anyone help with the following query?

I want to discover when a URL is called with a HEAD method. I've tried
supplying a header-function argument to export-url with the following:

(export-url "/test.html"
    :computed
    :response-function #'serve-page
    :header-function #'(lambda (url) (print "HEAD call") :html)
    :public t)

This gives the error:

Error: Arguments don't match lambda list..

Any suggestions welcomed.

David Johnson-Davies

+------------------------------------------------------------+
David Johnson-Davies, Human-Computer Interface Ltd
17 Signet Court, Swanns Road, Cambridge, CB5 8LA, England.

Tel: +44 1223 314934, Fax: +44 1223 462562
Email: [email protected], Web: http://www.interface.co.uk/
+------------------------------------------------------------+




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