Struct GroupTelegram 

pub struct GroupTelegram { /* private fields */ }

A single group service, addressed and carrying its data: the device it came from, the group it is addressed to, the service, and the payload in the form it travels in.

Every route to a value of this type ends at Self::new, decoding included, so a telegram that exists is one whose service and payload agree: a read carrying data, or a write carrying none, is refused rather than held.

Implementations

impl GroupTelegram

pub fn new( source: IndividualAddress, destination: GroupAddress, apci: Apci, payload: GroupPayload, ) -> Result<Self>

Builds a validated group telegram.

Payload rules:

• GroupValueRead carries GroupPayload::None and nothing else.
• GroupValueWrite / GroupValueResponse must carry data: either the optimized form or a non-empty octet sequence.
• An optimized value above six bits is rejected: it does not fit the service octet.
• Octet sequences longer than GroupPayload::MAX_OCTETS are rejected.

pub const fn source(&self) -> IndividualAddress

The individual address in the frame’s source field: for a decoded telegram, the device that sent it; for one being built, the address the sender stamps on its own traffic.

pub const fn destination(&self) -> GroupAddress

The group this telegram is addressed to.

pub const fn apci(&self) -> Apci

The group service this telegram carries.

pub const fn payload(&self) -> &GroupPayload

The payload in the transmitted form it was built or decoded with. The form is reported as held, never re-derived from the values.

pub fn npdu_len(&self) -> u8

The NPDU length this telegram states: the APDU octet count less the one octet the length field does not count.

The constructor bounds an octet payload at GroupPayload::MAX_OCTETS, so the result always fits; the fallback states the corrected maximum length value rather than assuming the bound - never 0xFF, the standard’s reserved escape.

Trait Implementations

impl Clone for GroupTelegram

fn clone(&self) -> GroupTelegram

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupTelegram

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

Formats the value using the given formatter.

impl Eq for GroupTelegram

impl PartialEq for GroupTelegram

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GroupTelegram