stk/Lib/www-http.stk

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1998-04-10 06:59:06 -04:00
;;;;
;;;; w w w - h t t p . s t k -- WWW for STk (HTTP: protocol)
;;;;
;;;; Copyright <20> 1996-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;;
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works. Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;; This version uses some of the enhancements done by Harvey J. Stein:
;;;; Copyright (c) 1995 Harvey J. Stein (hjstein@math.huji.ac.il)
;;;;
;;;; Author: Erick Gallesio [eg@unice.fr]
;;;; Creation date: 4-Oct-1996 18:49
;;;; Last file update: 27-Feb-1998 21:48
;; Add the "HTTP:" protocol
(with-module WWW
(define (get-http: url)
(let ((file (URL:filename url))
(host (URL:host url))
(port (URL:port-number url)))
;; Control parameters
(if (or (not host) (string=? host "")) (set! host "localhost"))
(if (or (not file) (string=? file "")) (set! file "/"))
(if (not port) (set! port 80))
(let* ((s (make-client-socket host port))
(in (socket-input s))
(out (socket-output s)))
(format out "GET ~A\r\n" file)
(close-output-port out)
;; Return the socket and the function to close it
(cons in
(lambda () (close-input-port in))))))
(WWW:add-protocol 'http get-http:)
)
(provide "www-http")