Struct MessageHeader 

pub struct MessageHeader {
    pub version: Version,
    pub flags: Flags,
    pub message_type: MessageType,
    pub message_size: u32,
}

GIOP message header (spec §15.4.1).

Fields

version: Version

GIOP version (spec §15.4.1).

flags: Flags

Flags octet (in GIOP 1.0 only byte_order).

message_type: MessageType

Message-type discriminant.

message_size: u32

message_size — body size in bytes (excluding the header).

Implementations

impl MessageHeader

pub const fn new( version: Version, flags: Flags, message_type: MessageType, message_size: u32, ) -> Self

Constructor.

pub const fn endianness(&self) -> Endianness

Returns the endianness from the flags octet (bit 0).

pub fn encode(&self, w: &mut BufferWriter) -> GiopResult<()>

Encodes the 12-byte header.

Errors

Buffer write error from the CDR layer.

pub fn decode(bytes: &[u8]) -> GiopResult<(Self, &[u8])>

Decodes the 12-byte header.

Important: the caller must create the BufferReader with Endianness::Big — the first 8 bytes (magic+version+flags+msg_type) are endian-free, but the message_size u32 must be re-interpreted based on the flags byte. This helper reads the flags byte and flips the endianness if necessary.

Errors

• InvalidMagic if bytes 0..4 are not "GIOP".
• UnsupportedVersion if major/minor is none of 1.0/1.1/1.2.
• UnknownMessageType if the octet is not in 0..=7.
• Buffer read error.

Trait Implementations

impl Clone for MessageHeader

fn clone(&self) -> MessageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MessageHeader

impl Debug for MessageHeader

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

Formats the value using the given formatter.

impl Eq for MessageHeader

impl PartialEq for MessageHeader

fn eq(&self, other: &MessageHeader) -> 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 MessageHeader