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38 lines
1.1 KiB
Scheme
38 lines
1.1 KiB
Scheme
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(import (scheme) (srfi 18) (chibi net) (chibi io) (chibi filesystem))
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;; Copy each input line to output.
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(define (echo-handler in out)
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(let ((line (read-line in)))
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(cond
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((not (eof-object? line))
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(display line out)
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(newline out)
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(flush-output out)
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(echo-handler in out)))))
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;; Run a handler in a separate thread on the input and output ports,
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;; then cleanup.
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(define (run-io-handler sock handler)
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(let ((in (open-input-file-descriptor sock))
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(out (open-output-file-descriptor sock)))
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(thread-start!
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(make-thread
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(lambda ()
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(handler in out)
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(close-input-port in)
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(close-output-port out)
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(close-file-descriptor sock))))))
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;; Basic server loop - repeatedly call accept, and dispatch the new
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;; socket to a handler.
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(define (serve host port)
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(let* ((addrinfo (get-address-info host port))
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(sock (make-listener-socket addrinfo)))
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(do () (#f)
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(let ((fd (accept sock
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(address-info-address addrinfo)
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(address-info-address-length addrinfo))))
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(run-io-handler fd echo-handler)))))
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(serve "localhost" 5556)
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