The method `InetSocketAddress::toString` has been improved regarding the handling of IPv6 addresses. The implementation now encloses the IPv6 literal in brackets, which adheres to the specification outlined in <a href="https://tools.ietf.org/html/rfc2732" target="_blank">RFC2732</a>.

Additionally, the string format for unresolved addresses has been changed. The method now represents the literal IP address with the token `<unresolved>`, for example: `foo/<unresolved>:80` instead of `foo:80`. This is based on `InetAddress::toString`, which returns a string of the form "hostname / literal IP address".
To retrieve a string representation of the hostname, or the string form of the address if it doesn't have a hostname, use `InetSocketAddress::getHostString`, rather than parsing the string representation.