`AddrListener` should accept IntoSocketAddrs

[nagisa]

What it says on the tin: TcpListener allows for multiple addresses to be provided. I haven’t looked too deeply into whether AddrListener is stuck with a single address, but if it isn’t it should support binding to multiple addresses!

[seanmonstar]

TcpListener::bind will resolve a list of addresses, and try to bind in the order received until one successfully binds. It won't bind to multiple addresses at once, though.

[nagisa]

Well I would usually have a list of SockAddrV6 and SockAddrV4, both with an UNSPECIFIED address.

Is that not something one should be doing?

[seanmonstar]

It certainly makes sense to listen on multiple addresses. I'd probably just multiple Servers, one with each address.

[nagisa]

@seanmonstar just making sure, was that PR intended to close this?

[seanmonstar]

Hrm, nope, that was a typo :(

However, I don't know what more to do with this issue.

[nagisa]

Its fine to keep it closed in that case. Thanks!