package chat import ( "syscall" log "github.com/sirupsen/logrus" ) func getMaximumConcurrentConnectionLimit() int64 { var rLimit syscall.Rlimit if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit); err != nil { log.Fatalln(err) } // Return the limit to 70% of max so the machine doesn't die even if it's maxed out for some reason. proposedLimit := int64(float32(rLimit.Max) * 0.7) return proposedLimit }