error message with keepalive script

[Amr Hamdy]

Hello,
I start mysql-proxy as follows;
mysql-proxy --proxy-address=:3306 --proxy-backend-addresses=192.168.99.244:3306 --proxy-read-only-backend-addresses=192.168.99.243:3306 --proxy-lua-script=examples/tutorial-keepalive.lua


Then I establish a connection to the proxy froma remote host;
mysql -h 192.168.99.222 -P3306 -uroot -ppassword

the connection got established successfully;
then I run a simple query "show databases;"

I get errors and the proxy says the following;
network-mysqld-proxy.c.3420: (connect_server) examples/tutorial-keepalive.lua:65: attempt to get length of field 'servers' (a nil value)
(read_query) examples/tutorial-keepalive.lua:166: attempt to get length of field 'servers' (a nil value)
network-mysqld-proxy.c.2815: I have no server backend, closing connection
network-mysqld.c.1161: plugin_call(CON_STATE_READ_QUERY) failed
network-mysqld-proxy.c.3722: (disconnect_client) examples/tutorial-keepalive.lua:257: attempt to get length of field 'servers' (a nil value)



I don't get such errors when I use the examples/tutorial-basic.lua script and queries could be run nicely .. but all queries go to the main backend not to the read-only backend at all ..


with the keepalive script when I establish the connection I could see that it established a connection to the main backend only and not to the read-only backend too ...