address 0.20.0-rc.3

Network address types with strict validation, owned & borrowed variants, and standard library conversions.
Documentation 
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use crate::ParseError::InvalidSocketAddress;
use crate::parse_port;
use crate::{IPv4Address, IPv6Address, ParseError, SocketAddress, doc_ignored_zone, impl_parse};

impl_parse!(SocketAddress, doc_ignored_zone!());

impl TryFrom<&[u8]> for SocketAddress {
    type Error = ParseError;

    #[doc = doc_ignored_zone!()]
    fn try_from(socket: &[u8]) -> Result<Self, Self::Error> {
        let (s, port): (&[u8], u16) = parse_port(socket)?;
        if let Some(ip) = IPv6Address::parse_bracketed(s) {
            Ok(ip?.to_ip().to_socket(port))
        } else {
            let ip: IPv4Address = IPv4Address::parse(s).map_err(|_| InvalidSocketAddress)?;
            Ok(ip.to_ip().to_socket(port))
        }
    }
}

#[cfg(test)]
mod tests {
    use crate::ParseError::{InvalidIPv6Address, InvalidPort, InvalidSocketAddress};
    use crate::{IPv4Address, IPv6Address, ParseError, SocketAddress};
    use std::str::FromStr;

    #[test]
    fn parse() {
        let test_cases: &[(&str, Result<SocketAddress, ParseError>)] = &[
            ("", Err(InvalidPort)),
            ("[::1]:", Err(InvalidPort)),
            ("[::1]:xx", Err(InvalidPort)),
            (":80", Err(InvalidSocketAddress)),
            ("xx:80", Err(InvalidSocketAddress)),
            ("::1:80", Err(InvalidSocketAddress)),
            ("[]:80", Err(InvalidIPv6Address)),
            ("[xx]:80", Err(InvalidIPv6Address)),
            ("[::1%eth0]:80", Err(InvalidIPv6Address)),
            ("127.0.0.1:80", Ok(IPv4Address::LOCALHOST.to_ip().to_socket(80))),
            ("0.0.0.0:0", Ok(IPv4Address::UNSPECIFIED.to_ip().to_socket(0))),
            (
                "255.255.255.255:65535",
                Ok(IPv4Address::BROADCAST.to_ip().to_socket(65535)),
            ),
            ("[::1]:80", Ok(IPv6Address::LOCALHOST.to_socket(80).to_socket())),
            ("[::1%1]:80", Ok(IPv6Address::LOCALHOST.to_socket(80).to_socket())),
        ];

        for (input, expected) in test_cases {
            let result: Result<SocketAddress, ParseError> = SocketAddress::from_str(input);
            assert_eq!(result, *expected, "input={}", input);

            let result: Result<SocketAddress, ParseError> = SocketAddress::try_from(*input);
            assert_eq!(result, *expected, "input={}", input);

            let result: Result<SocketAddress, ParseError> = SocketAddress::try_from(input.as_bytes());
            assert_eq!(result, *expected, "input={}", input);
        }
    }

    /// Each canonical string must parse and display back to the exact same string.
    #[test]
    fn round_trip() {
        let canonical: &[&str] = &["127.0.0.1:80", "[::1]:443", "[fe80::1]:0", "0.0.0.0:0"];

        for input in canonical {
            let value: SocketAddress = input.parse().unwrap();
            assert_eq!(value.to_string(), *input, "input={}", input);
        }
    }
}