Many connections get SYN_RECV status
I have small app, client connects to socket (socket listened by twisted based socket server), send/receive some data, disconnects and reconnects in 2 second. While I was on another VPS, it was ok, but now connections too often get SYN_RECV status. I'm not system administrator, so used default Ubuntu image. I have tried config sysctl, use many solutions from internet but cannot get positive result.