33 lines
1.0 KiB
Scheme
Executable File
33 lines
1.0 KiB
Scheme
Executable File
#!/usr/bin/env scheme-script
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(import (ikarus))
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;;; very simple demo for how to connect to a server,
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;;; send a request and receive a response.
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;;; Here, we use an asynchronous IO socket. We wrap the whole
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;;; operation with an exception handler to handle the would-block
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;;; conditions. If we do get a would-block condition, we just
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;;; return, causing the read/write operation to be restarted until
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;;; it succeeds. Pretty lame at this point, but it works.
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(define (http-cat host)
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(with-exception-handler
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(lambda (c)
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;;; just return and let it retry until it succeeds
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(unless (i/o-would-block-condition? c)
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(raise c)))
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(lambda ()
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(let-values ([(op ip) (tcp-connect-nonblocking host "http")])
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(let ([op (transcoded-port op (native-transcoder))]
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[ip (transcoded-port ip (native-transcoder))])
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(display "GET /\n" op)
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(display (get-string-all ip))
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(close-input-port ip)
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(close-output-port op))))))
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(http-cat "www.google.com")
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(newline)
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;(http-cat "127.0.0.1")
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