meagon

shall we use union 　implementation Just as[ rust-bindgen](https://github.com/crabtw/rust-bindgen/) did; rust-bindgen support **union** and **enum** and we can pass union and enum error as a replacement

both node are starts welll, will if node lost connection as some time, it will auto reconnect?

I did it with 2 nodes, and my wal sender process becomes in ``` wal sender process postgres 192.168.56.103(37494) idle in transaction ``` when i use `ps -ef |grep postgres`...