Struct TcpHeader 

#[repr(C, packed(1))]
pub struct TcpHeader {
    pub src_port: u16,
    pub dst_port: u16,
    pub seq_number: u32,
    pub ack_number: u32,
    pub data_offset_flags: u16,
    pub window_size: u16,
    pub checksum: u16,
    pub urgent_pointer: u16,
}

TCP header

Fields

src_port: u16

Source port

dst_port: u16

Destination port

seq_number: u32

Sequence number

ack_number: u32

Acknowledgment number

data_offset_flags: u16

Data offset (4 bits) + reserved (4 bits) + flags (8 bits)

window_size: u16

Window size

checksum: u16

Checksum

urgent_pointer: u16

Urgent pointer

Implementations

impl TcpHeader

pub fn new(src_port: u16, dst_port: u16) -> Self

Create a new TCP header

pub fn flags(&self) -> u8

Get TCP flags

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

Set TCP flags

pub fn data_offset(&self) -> usize

Get data offset in bytes

pub fn calculate_checksum( &self, src_ip: [u8; 4], dst_ip: [u8; 4], data: &[u8], ) -> u16

Calculate TCP checksum

pub fn to_bytes(&self) -> Vec<u8>

Serialize header to bytes

pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Parse header from bytes

Trait Implementations

impl Clone for TcpHeader

fn clone(&self) -> TcpHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TcpHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for TcpHeader