Struct IPv4Writer

pub struct IPv4Writer<'a> {
    pub bytes: &'a mut [u8],
}

Writes IPv4 header fields.

Fields

bytes: &'a mut [u8]

Implementations

impl<'a> IPv4Writer<'a>

pub fn new(bytes: &'a mut [u8]) -> Result<Self, &'static str>

Creates a new IPv4Writer from the given slice.

pub fn header_len(&self) -> usize

Returns the actual header length in bytes.

pub fn set_version(&mut self, version: u8)

Sets the version field.

Indicates the IP version number. Should be set to 4.

pub fn set_ihl(&mut self, ihl: u8)

Sets the IHL field.

pub fn set_dscp(&mut self, dscp: u8)

Sets the DSCP field.

pub fn set_ecn(&mut self, ecn: u8)

Sets the ECN field.

pub fn set_total_length(&mut self, total_length: u16)

Sets the total length field.

Should include the entire packet (header and payload).

pub fn set_id(&mut self, identification: u16)

Sets the identification field.

pub fn set_flags(&mut self, flags: u8)

Sets the flags field.

pub fn set_fragment_offset(&mut self, fragment_offset: u16)

Sets the fragment offset field.

pub fn set_ttl(&mut self, ttl: u8)

Sets the TTL field.

pub fn set_protocol(&mut self, protocol: u8)

Sets the protocol field.

pub fn set_src_ip(&mut self, src_ip: &[u8; 4])

Sets the source IP address field.

pub fn set_dest_ip(&mut self, dest_ip: &[u8; 4])

Sets the destination IP address field.

pub fn set_checksum(&mut self)

Calculates the checksum field.

Only includes the header.