Christiaan Dirkx 5b84b9a8d8 Constify methods of std::net::SocketAddr, SocketAddrV4 and SocketAddrV6
The following methods are made unstable const under the `const_socketaddr` feature:

`SocketAddr`
 - `ip`
 - `port`
 - `is_ipv4`
 - `is_ipv6`

`SocketAddrV4`
 - `ip`
 - `port`

`SocketAddrV6`
 - `ip`
 - `port`
 - `flowinfo`
 - `scope_id`
2021-02-24 18:18:26 +01:00
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2020-12-07 15:22:34 +01:00
2020-11-22 17:11:41 -05:00
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