mirror of
https://repo.or.cz/socat.git
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54 lines
1.3 KiB
Bash
54 lines
1.3 KiB
Bash
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#! /bin/bash
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# source: predialog.sh
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# Copyright Gerhard Rieger 2009
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# Published under the GNU General Public License V.2, see file COPYING
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# This is an example script that shows how to write a script for use with socat
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# intermediate addresses. it shows a case where an initial dialog on the right
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# side is performed. afterwards data is just passed in both directions.
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# uncomment this if you want to analyse which file descriptors are open
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#filan -s -o+2; sleep 1; echo
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# these are the "right side" file descriptors provided by socat; 0 and 1 are
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# the "left side" FDs
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RINFD=3
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ROUTFD=4
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verbose=
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# parse options
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SPACES=" "
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while [ -n "$1" ]; do
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case "$1" in
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-v) verbose=1 ;;
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*) echo "$0: unknown option \"$1\"" >&2; exit -1 ;;
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esac
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shift
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done
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msg () {
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[ "$verbose" ] && echo "$0: $1" >&2
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}
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# send a request
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msg "sending request"
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echo -e "CONNECT 10.0.0.1:80 HTTP/1.0\n" >&4
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# read reply
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msg "waiting for reply"
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read -r <&3
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case "$REPLY" in
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"HTTP/1.0 200 OK") ;;
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*) msg "bad reply \"$REPLY\"" exit 1 ;;
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esac
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# skip headers until empty line
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msg "skipping reply headers"
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while read -r <&3 && ! [ "$REPLY" = "" ]; do :; done
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wait
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msg "starting data transfer"
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# now just pass traffic in both directions
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#SOCAT_OPTS="-lu -d -d -d -d"
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exec socat $SOCAT_OPTS - "fd:$ROUTFD:$RINFD"
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