ether 0.1.4

Library for parsing and manipulating network data, packet captures.
Documentation 
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pub mod ipv4 {
    use std::ops;
    use std::fmt;
    use std::net::Ipv4Addr;

    use utility::parser;

    pub struct Packet<'a>(&'a [u8]);

    #[doc(hidden)]
    impl<'a> ops::Deref for Packet<'a> {
        type Target = &'a [u8];
        fn deref(&self) -> &Self::Target {
            &self.0
        }
    }

    impl<'a> Packet<'a> {
        pub fn new(data: &'a [u8]) -> Self {
            Packet(data)
        }

        pub fn ihl(&self) -> u8 {
            self[0] & 0xF
        }

        pub fn length(&self) -> u16 {
            parser::be_u16(&self[2..])
        }

        pub fn protocol(&self) -> Protocol {
            self[9].into()
        }

        pub fn source(&self) -> Ipv4Addr {
            let addr = &self[12..16];
            Ipv4Addr::new(addr[0], addr[1], addr[2], addr[3])
        }

        pub fn destination(&self) -> Ipv4Addr {
            let addr = &self[16..20];
            Ipv4Addr::new(addr[0], addr[1], addr[2], addr[3])
        }

        pub fn payload(&self) -> &[u8] {
            let offset = self.ihl() as usize * 4;
            let end = self.length() as usize;
            &self[offset..end]
        }
    }

    impl<'a> fmt::Debug for Packet<'a> {
        fn fmt(&self, fmtr: &mut fmt::Formatter) -> fmt::Result {
            fmtr.debug_struct("ipv4::Packet")
                // Version
                .field("ihl", &self.ihl())
                // DSCP
                // ECN
                .field("length", &self.length())
                // Identification
                // Flags
                // Fragment Offset
                // Time To Live
                .field("protocol", &self.protocol())
                // Header Checksum
                .field("source", &self.source())
                .field("destination", &self.destination())
                // Options
                .finish()
        }
    }

    #[derive(Debug, PartialEq, Clone)]
    pub enum Protocol {
        ICMP,
        IGMP,
        TCP,
        UDP,
        ENCAP,
        OSPF,
        SCTP,
        Unknown(u8),
    }

    impl From<u8> for Protocol {
        fn from(value: u8) -> Self {
            use self::Protocol::*;
            match value {
                1 => ICMP,
                2 => IGMP,
                6 => TCP,
                17 => UDP,
                41 => ENCAP,
                89 => OSPF,
                132 => SCTP,
                otherwise => Unknown(otherwise),
            }
        }
    }
}