Struct StunHeader

pub struct StunHeader {
    pub message_class: StunMessageClass,
    pub message_method: StunMessageMethod,
    pub transaction_id: [u8; 12],
    pub message_len: u16,
}

STUN message header

All STUN messages MUST start with a 20-byte header followed by zero or more Attributes. The STUN header contains a STUN message type, magic cookie, transaction ID, and message length.

The most significant 2 bits of every STUN message MUST be zeroes. This can be used to differentiate STUN packets from other protocols when STUN is multiplexed with other protocols on the same port.

The message type defines the message class (request, success response, failure response, or indication) and the message method (the primary function) of the STUN message. Although there are four message classes, there are only two types of transactions in STUN: request/response transactions (which consist of a request message and a response message) and indication transactions (which consist of a single indication message). Response classes are split into error and success responses to aid in quickly processing the STUN message.

Fields

message_class: StunMessageClass

STUN message class

message_method: StunMessageMethod

STUN message method

transaction_id: [u8; 12]

STUN transaction id

message_len: u16

STUN message length Only set to a non-zero value when decoding the header

Trait Implementations

impl Clone for StunHeader

fn clone(&self) -> StunHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StunHeader

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

Formats the value using the given formatter.

impl Copy for StunHeader