Struct TcpWriter 

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

Writes TCP header fields.

Fields

bytes: &'a mut [u8]

Implementations

impl<'a> TcpWriter<'a>

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

Creates a new TcpWriter from the given slice.

pub fn header_len(&self) -> usize

Returns the header length in bytes.

pub fn packet_len(&self) -> usize

Returns the total length of the packet in bytes.

pub fn set_src_port(&mut self, src_port: u16)

Sets the source port field.

pub fn set_dest_port(&mut self, dest_port: u16)

Sets the destination port field.

pub fn set_sequence_number(&mut self, sequence_number: u32)

Sets the sequence number field.

pub fn set_ack_number(&mut self, acknowledgment_number: u32)

Sets the acknowledgment number field.

pub fn set_data_offset(&mut self, data_offset: u8)

Sets the data offset field.

pub fn set_reserved(&mut self, reserved: u8)

Sets the reserved field.

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

Sets the flags field.

pub fn set_window_size(&mut self, window_size: u16)

Sets the window size field.

pub fn set_urgent_pointer(&mut self, urgent_pointer: u16)

Sets the urgent pointer field.

pub fn set_payload(&mut self, payload: &[u8]) -> Result<(), &'static str>

Sets the payload field.

The PacketBuilder sets the payload before the checksum.

That is, because the checksum is invalidated if a payload is set after it.

pub fn set_checksum(&mut self, pseudo_sum: u32)

Calculates the checksum field for error checking.

Includes the TCP header, payload and IPv4 pseudo header.