;;; In one terminal do this:
;;; $ nc -v -l -p 1234
;;; then do the following. there needs to be no data going on the tcp connection.

;; -n to disable parley etc
$ csi -n

CHICKEN
(c) 2008-2014, The Chicken Team
(c) 2000-2007, Felix L. Winkelmann
Version 4.9.1 (rev 30bb2f2)
linux-unix-gnu-x86-64 [ 64bit manyargs dload ptables ]
compiled 2014-07-09 on kth (Linux)

#;1> (use tcp)
; loading /usr/local/lib/chicken/7/tcp.import.so ...
; loading library tcp ...
#;2> (define-values (i o) (tcp-connect "127.0.0.1" 1234))
#;3> (read-char i)
^C
*** user interrupt ***
#;3> (read-char i)
^C
*** user interrupt ***
#;3> (read-char i)
^C
*** user interrupt ***
#;3> (read-char i)
^C
*** user interrupt ***
#;3> (read-char i)
*** Error in `csi': realloc(): invalid next size: 0x00000000018da030 ***
^C^C^C
^C^C^C^C^C^C^C
^\Quit (core dumped)