method Socket.prototype.setMulticastTTL
Usage in Deno
```typescript import { Socket } from "node:node__dgram.d.ts"; ```
Socket.prototype.setMulticastTTL(ttl: number): number
Sets the `IP_MULTICAST_TTL` socket option. While TTL generally stands for
"Time to Live", in this context it specifies the number of IP hops that a
packet is allowed to travel through, specifically for multicast traffic. Each
router or gateway that forwards a packet decrements the TTL. If the TTL is
decremented to 0 by a router, it will not be forwarded.
The `ttl` argument may be between 0 and 255\. The default on most systems is `1`.
This method throws `EBADF` if called on an unbound socket.
number