[dev] Not able to receive message in zebra from bgp

Hi, 1. I am sending a message from BGP to zebra to set a client variable in zebra. (notify_owner inside structure zserv). For this, I expect that bgp to zebra connection should be up. So, I added code to send message from bgp to zebra in bgp_zebra_connected(). But it looks like message is not getting received in zebra or getting dropped. What is the correct place for sending message from bgp to zebra immediately when connection is up ? 2. Is there any way to print the callstack inside bgp without breaking the bgp code (something like software assert). Thanks, Sudhanshu