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fix: actual 'failures' management (.5s between each failure + stop after 10 consecutive ones) + on success do as usual

This commit is contained in:
xdrm-brackets 2018-01-30 18:46:00 +01:00
parent 5b061da68c
commit 6c5d87d2ba
1 changed files with 20 additions and 8 deletions
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28
bind-input
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@ -10,8 +10,8 @@ ROOT=$(dirname `realpath $0`);
test $# -lt 2 && echo -e "error: too fewarguments\n\n\e[1mUSAGE\e[0m\n\tbind-input <id> <port>\n\n\e[1mARGUMENTS\e[0m\n\t<id>\tThe identifier of the input (buffer name)\n\t<port>\tTo port to listen to\n" && exit 1; test $# -lt 2 && echo -e "error: too fewarguments\n\n\e[1mUSAGE\e[0m\n\tbind-input <id> <port>\n\n\e[1mARGUMENTS\e[0m\n\t<id>\tThe identifier of the input (buffer name)\n\t<port>\tTo port to listen to\n" && exit 1;
# (3) Check @PORT range # # (3) Check @PORT range #
MIN_PORT=49152; MIN_PORT=1024;
MAX_PORT=65535; MAX_PORT=49151;
test "$2" -gt "$MAX_PORT" -o "$2" -lt "$MIN_PORT" && echo "error: <port> must be between $MIN_PORT and $MAX_PORT" && exit 1; test "$2" -gt "$MAX_PORT" -o "$2" -lt "$MIN_PORT" && echo "error: <port> must be between $MIN_PORT and $MAX_PORT" && exit 1;
# (4) Set argument explicit names # # (4) Set argument explicit names #
@ -36,19 +36,31 @@ touch $BUFFER;
#--------------------------------------------------------# #--------------------------------------------------------#
( (
trap "kill -9 %1 2>/dev/null" INT KILL; trap "kill -9 $NC_PID 2>/dev/null" INT KILL;
infail=0; infail=0;
# (1) kill script after 10 failures # (1) kill script after 10 failures
while [ $infail -lt 10 ]; do while [ $infail -lt 10 ]; do
echo "failures: $infail";
# (2) bind socket to buffer # (2) bind socket to buffer
echo "(.) binding :$IN_PT to $BUFFER"; echo "(.) binding port $IN_PT to $BUFFER";
( nc -lp $IN_PT >> $BUFFER 2> /dev/null && infail="0" || ( infail=`expr $infail + 1`; exit 1 ) || echo " * cannot access :$IN_PT" )& # (3) Check if port already in use
wait $!; ss -tl4 "( sport = :$IN_PT )" | grep "$IN_PT" >/dev/null;
PORT_TAKEN=$?;
# (4) Manage taken port #
if [ "$PORT_TAKEN" -ne "1" ]; then
infail="`expr $infail + 1`";
sleep .5;
continue;
fi;
# (5) Bind input
infail="0";
( nc -lp $IN_PT >> $BUFFER 2>/dev/null )&
NC_PID=$!;
wait $NC_PID;
done; done;