Struct Tlv 

pub struct Tlv {
    pub tag: u16,
    pub length: u16,
    pub value: Vec<u8>,
}

Tag-Length-Value (TLV) Parameter

Fields

tag: u16

The tag identifier for the parameter

length: u16

The length of the value field

value: Vec<u8>

The value of the parameter

Implementations

impl Tlv

pub fn new(tag: u16, value: Vec<u8>) -> Self

Creates a new TLV with the given tag and value.

pub fn new_from_name(name: &str, value: Vec<u8>) -> Self

Convenience: create a TLV using a string name for the tag

pub fn new_u8(tag: u16, val: u8) -> Self

Creates a new TLV with a single u8 value.

pub fn new_u8_from_name(name: &str, val: u8) -> Self

Convenience: create u8 TLV from name

pub fn new_u16(tag: u16, val: u16) -> Self

Creates a new TLV with a u16 value (Big Endian).

pub fn new_u16_from_name(name: &str, val: u16) -> Self

Convenience: create u16 TLV from name

pub fn new_string(tag: u16, val: &str) -> Self

Creates a new TLV with a C-style string value (null-terminated).

pub fn new_payload(tag: u16, val: Vec<u8>) -> Self

Creates a new TLV with a raw payload.

pub fn encode(&self, writer: &mut impl Write) -> Result<(), PduError>

Encodes the TLV into the writer.

pub fn decode(cursor: &mut Cursor<&[u8]>) -> Result<Option<Self>, PduError>

Decodes a TLV from the cursor.

pub fn value_as_u8(&self) -> Result<u8, PduError>

Returns the value as a u8 (if length is 1).

pub fn value_as_u16(&self) -> Result<u16, PduError>

Returns the value as a u16 (if length is 2).

pub fn value_as_string(&self) -> Result<String, PduError>

Returns the value as a String (removes trailing null if present).

Trait Implementations

impl Clone for Tlv

fn clone(&self) -> Tlv

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tlv

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

Formats the value using the given formatter.

impl PartialEq for Tlv

fn eq(&self, other: &Tlv) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Tlv