35 lines
1.5 KiB
Racket
35 lines
1.5 KiB
Racket
;;; SPDX-License-Identifier: LGPL-3.0-or-later
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;;; SPDX-FileCopyrightText: Copyright © 2010-2021 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
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#lang syndicate
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(require/activate "ethernet.rkt")
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(require/activate "arp.rkt")
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(require/activate "ip.rkt")
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(require/activate "tcp.rkt")
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(require/activate "udp.rkt")
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(require/activate "demo-config.rkt")
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(require net/dns) ;; not syndicateish yet
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(let ()
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(define host "www.w3.org")
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(define port 80)
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(define connection-id 'httpclient)
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(define remote-handle (tcp-address (dns-get-address (dns-find-nameserver) host) port))
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(spawn (assert (tcp-connection connection-id remote-handle))
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(stop-when (asserted (tcp-rejected connection-id $reason))
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(local-require racket/exn)
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(printf "Connection failed:\n ~a" (exn->string reason)))
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(on (asserted (tcp-accepted connection-id))
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(send! (tcp-out connection-id
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(bytes-append #"GET / HTTP/1.0\r\nHost: "
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(string->bytes/utf-8 host)
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#"\r\n\r\n"))))
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(stop-when (retracted (tcp-accepted connection-id))
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(printf "URL fetcher exiting.\n"))
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(on (message (tcp-in connection-id $bs))
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(printf "----------------------------------------\n~a\n" bs)
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(printf "----------------------------------------\n"))))
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