Now 'master' have a main 'input' for all port responses + now all seem to work each time .. (+fixed some minor things)

master

@@ -69,6 +69,9 @@ on_exit(){
 	echo "- killing main output";
 	kill -INT $MASTER_PID 2>/dev/null;
 
+	echo "- killing main input";
+	kill -INT $LIST_PID 2>/dev/null;
+
 	echo "- killing loop";
 	# kill -INT $LOOP_PID 2>/dev/null;
 
@@ -76,6 +79,7 @@ on_exit(){
 	echo "- deleting tmp file";
 	rm $TMPFILE 2>/dev/null;
 
+	exit 1;
 }
 
 trap "on_exit;" HUP INT KILL TERM;
@@ -91,6 +95,24 @@ echo -e "\e[32m+\e[0m connect to $POOL_HOST:$POOL_PORT";
 $ROOT/bind-output master $POOL_HOST $POOL_PORT > $TMPFILE;
 MASTER_PID="`cat $TMPFILE`";
 
+# (2) Bind input (find free port first)
+# Find an available port
+LIST_PORT="$MIN_PORT";
+while true; do
+
+	# if port not in use -> use it
+	ss -tl4 "( sport = :$LIST_PORT )" | grep "$LIST_PORT" >/dev/null 2>&1 || break;
+
+	# else try next port (+1)
+	PORT="`expr $LIST_PORT + 1`";
+
+done;
+
+# listen for pool response (port number)
+echo -e "\e[32m+\e[0m listen $LIST_PORT";
+$ROOT/bind-input master $LIST_PORT > $TMPFILE;
+LIST_PID="`cat $TMPFILE`";
+
 echo "  + flush connection before using it";
 # $ROOT/write master "";
 
@@ -101,35 +123,18 @@ for logger_name in "${LOGGERS[@]}"; do
 
 	echo "  + logger '$logger_name'";
 
-	# Find an available port
+	sleep .5;
-	PORT="$MIN_PORT";
-	while true; do
-
-		# if port not in use -> use it
-		ss -tl4 "( sport = :$PORT )" | grep "$PORT" >/dev/null 2>&1 || break;
-
-		# else try next port (+1)
-		PORT="`expr $PORT + 1`";
-
-	done;
-
-	# listen for pool response (port number)
-	echo -e "    \e[32m+\e[0m listen $PORT";
-	$ROOT/bind-input freeport $PORT > $TMPFILE;
-	FREEPORT_PID="`cat $TMPFILE`";
-
-	sleep 1;
 
 	# send port request
 	echo "    + sending port request";
-	$ROOT/write master "$POOL_KEY:$logger_name:$LOCAL_IP:$PORT";
+	$ROOT/write master "$POOL_KEY:$logger_name:$LOCAL_IP:$LIST_PORT";
 
 	echo "      + waiting for response";
 	RESP="";
-	timeout=8; # 4sec = 8 x .5sec
+	timeout=10; # 5sec = 10 x .5sec
 	while [ "$timeout" -gt "0" ]; do
 
-		RESP="`$ROOT/read freeport`";
+		RESP="`$ROOT/read master`";
 
 		# if empty answer, try again in .5 sec
 		if [ -z "$RESP" ]; then
@@ -148,8 +153,6 @@ for logger_name in "${LOGGERS[@]}"; do
 
 	# closing listen socket
 	echo -e "      + received '\e[33m$RESP\e[0m'";
-	echo -e "    \e[31m+\e[0m stop listening on $PORT";
-	kill -INT $FREEPORT_PID 2>/dev/null;
 
 	# empty response -> ignore
 	test -z "$RESP" && echo "      + no answer" && continue;
@@ -173,12 +176,14 @@ done;
 # When all loggers are bound, destroy pool connection
 
 # 1. Send END msg to pool (but wait for it to manage last logger)
-sleep 2;
 $ROOT/write master "END${POOL_KEY}END";
 
 # 2. Close pool connection
 echo -e "\e[31m+\e[0m close connection to $POOL_HOST:$POOL_PORT ";
 kill -INT $MASTER_PID 2>/dev/null;
+echo -e "\e[31m+\e[0m stop listening on $LIST_PORT";
+kill -INT $LIST_PID;
+
 
 echo "  + ${#LOGGER_PID[@]} loggers running in background";
 for logger_name in "${!LOGGER_PID[@]}"; do

pool

@@ -105,9 +105,10 @@ POOL_PID="`cat $TMPFILE`";
 
 		# Find an available port
 		PORT="$MIN_PORT";
-
 		while true; do
 
+			# do not use same port as master (if on same machine)
+			test "$PORT" = "$LOGGER_PORT" && PORT="`expr $PORT + 1`" && continue;
 			# ignore already used ports
 			for used in ${USED_PORTS[*]}; do
 				test "$PORT" = "$used" && PORT="`expr $PORT + 1`" && continue;
@@ -139,6 +140,7 @@ POOL_PID="`cat $TMPFILE`";
 
 
 		# Notify that input is active to MASTER
+		sleep 1;
 		echo "      + sending '$PORT' to $LOGGER_HOST:$LOGGER_PORT";
 		bash -c "exec 4<>/dev/tcp/$LOGGER_HOST/$LOGGER_PORT; echo -n \"$PORT\" >&4;";