Struct TcpBuilder 

pub struct TcpBuilder { /* private fields */ }

Builder for TCP packets.

Implementations

impl TcpBuilder

pub fn new() -> Self

Create a new TCP builder with default values.

pub fn from_bytes(data: &[u8]) -> Result<Self, FieldError>

Create a builder initialized from an existing packet.

pub fn src_port(self, port: u16) -> Self

Set the source port.

pub fn sport(self, port: u16) -> Self

Alias for src_port (Scapy compatibility).

pub fn dst_port(self, port: u16) -> Self

Set the destination port.

pub fn dport(self, port: u16) -> Self

Alias for dst_port (Scapy compatibility).

pub fn seq(self, seq: u32) -> Self

Set the sequence number.

pub fn ack_num(self, ack: u32) -> Self

Set the acknowledgment number.

pub fn data_offset(self, offset: u8) -> Self

Set the data offset (in 32-bit words).

pub fn dataofs(self, offset: u8) -> Self

Alias for data_offset (Scapy compatibility).

pub fn reserved(self, reserved: u8) -> Self

Set the reserved bits.

pub fn flags(self, flags: TcpFlags) -> Self

Set the flags.

pub fn flags_str(self, s: &str) -> Self

Set flags from a string like “S”, “SA”, “FA”, etc.

pub fn syn(self) -> Self

Set the SYN flag.

pub fn ack(self) -> Self

Set the ACK flag.

pub fn fin(self) -> Self

Set the FIN flag.

pub fn rst(self) -> Self

Set the RST flag.

pub fn psh(self) -> Self

Set the PSH flag.

pub fn urg(self) -> Self

Set the URG flag.

pub fn ece(self) -> Self

Set the ECE flag.

pub fn cwr(self) -> Self

Set the CWR flag.

pub fn ns(self) -> Self

Set the NS flag.

pub fn syn_ack(self) -> Self

Set SYN+ACK flags.

pub fn fin_ack(self) -> Self

Set FIN+ACK flags.

pub fn psh_ack(self) -> Self

Set PSH+ACK flags.

pub fn window(self, window: u16) -> Self

Set the window size.

pub fn checksum(self, checksum: u16) -> Self

Set the checksum manually.

pub fn chksum(self, checksum: u16) -> Self

Alias for checksum (Scapy compatibility).

pub fn urgent_ptr(self, urgptr: u16) -> Self

Set the urgent pointer.

pub fn urgptr(self, urgptr: u16) -> Self

Alias for urgent_ptr (Scapy compatibility).

pub fn src_ip<T: Into<IpAddr>>(self, ip: T) -> Self

Set the source IP address (for checksum calculation).

pub fn dst_ip<T: Into<IpAddr>>(self, ip: T) -> Self

Set the destination IP address (for checksum calculation).

pub fn ipv4_addrs(self, src: Ipv4Addr, dst: Ipv4Addr) -> Self

Set both source and destination IPv4 addresses.

pub fn ipv6_addrs(self, src: Ipv6Addr, dst: Ipv6Addr) -> Self

Set both source and destination IPv6 addresses.

pub fn options(self, options: TcpOptions) -> Self

Set the options.

pub fn option(self, option: TcpOption) -> Self

Add a single option.

pub fn with_options<F>(self, f: F) -> Self

where F: FnOnce(TcpOptionsBuilder) -> TcpOptionsBuilder,

Add options using a builder function.

pub fn mss(self, mss: u16) -> Self

Add an MSS (Maximum Segment Size) option.

pub fn wscale(self, scale: u8) -> Self

Add a Window Scale option.

pub fn sack_ok(self) -> Self

Add SACK Permitted option.

pub fn sack(self, blocks: Vec<TcpSackBlock>) -> Self

Add a SACK option with blocks.

pub fn timestamp(self, ts_val: u32, ts_ecr: u32) -> Self

Add a Timestamp option.

pub fn nop(self) -> Self

Add a NOP (padding) option.

pub fn eol(self) -> Self

Add an EOL (End of Options) option.

pub fn tfo(self, cookie: Option<Vec<u8>>) -> Self

Add a TFO (TCP Fast Open) option.

pub fn md5(self, signature: [u8; 16]) -> Self

Add an MD5 signature option.

pub fn ao(self, key_id: u8, rnext_key_id: u8, mac: Vec<u8>) -> Self

Add an Authentication Option (TCP-AO).

pub fn payload(self, payload: impl Into<Vec<u8>>) -> Self

Set the payload data.

pub fn append_payload(self, data: &[u8]) -> Self

Append data to the payload.

pub fn auto_checksum(self, enabled: bool) -> Self

Enable or disable automatic checksum calculation.

pub fn auto_data_offset(self, enabled: bool) -> Self

Enable or disable automatic data offset calculation.

pub fn header_size(&self) -> usize

Calculate the header size (including options, with padding).

pub fn packet_size(&self) -> usize

Calculate the total packet size.

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

Build the TCP packet.

pub fn build_into(&self, buf: &mut [u8]) -> Result<usize, FieldError>

Build the TCP packet into an existing buffer.

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

Build only the header (no payload).

impl TcpBuilder

pub fn syn_packet() -> Self

Create a SYN packet builder.

pub fn syn_ack_packet() -> Self

Create a SYN-ACK packet builder.

pub fn ack_packet() -> Self

Create an ACK packet builder.

pub fn fin_ack_packet() -> Self

Create a FIN-ACK packet builder.

pub fn rst_packet() -> Self

Create a RST packet builder.

pub fn rst_ack_packet() -> Self

Create a RST-ACK packet builder.

pub fn data_packet() -> Self

Create a PSH-ACK packet builder (for data).

impl TcpBuilder

pub fn random_seq(self) -> Self

Set a random sequence number.

pub fn random_sport(self) -> Self

Set a random source port (dynamic range: 49152-65535).

Trait Implementations

impl Clone for TcpBuilder

fn clone(&self) -> TcpBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TcpBuilder

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

Formats the value using the given formatter.

impl Default for TcpBuilder

fn default() -> Self

Returns the “default value” for a type.

impl From<TcpBuilder> for LayerStack

fn from(builder: TcpBuilder) -> Self

Converts to this type from the input type.

impl IntoLayerStackEntry for TcpBuilder

fn into_layer_stack_entry(self) -> LayerStackEntry