| Value | Meaning |
|---|---|
| none0 | Don't enable any particular option |
| distribute1 << 0 | Deprecated: causes incoming connections to be distributed across the thread pool |
| disableAutoClose1 << 1 | Disables automatic closing of the connection when the connection callback exits |
| reusePort1 << 2 | Enable port reuse on linux kernel version >=3.9, do nothing on other OS Does not affect libasync driver because it is always enabled by libasync. |
| reuseAddress1 << 3 | Enable address reuse |
| defaultsreuseAddress |
Flags to control the behavior of listenTCP.