Struct MobileProtocolHeader 

pub struct MobileProtocolHeader {
    pub magic: u8,
    pub version: u8,
    pub msg_type: u8,
    pub flags: u8,
    pub headcrc16: u16,
    pub datacrc: u16,
    pub seq_id: u16,
    pub timeout: u16,
    pub body_length: u32,
}

Mobile Protocol Header (16 bytes)

Compact header designed for mobile clients with bandwidth constraints.

Fields

magic: u8

Magic number: 0xDF

version: u8

Protocol version

msg_type: u8

Message type: REQ(1), RSP(2), NOTIFY(3), SYSRSP(4)

flags: u8

Flags: bit0=compressed, bit1=encrypted, bit2=fragment

headcrc16: u16

Header CRC16 (truncating addition checksum)

datacrc: u16

Data CRC16 (lower 16 bits of CRC32)

seq_id: u16

Sequence ID (16-bit, wraps around)

timeout: u16

Timeout in seconds (not milliseconds!)

body_length: u32

Body length in bytes

Implementations

impl MobileProtocolHeader

pub fn new(seq_id: u16, msg_type: u8) -> Self

Create a new mobile protocol header

pub fn is_compressed(&self) -> bool

Check if data is compressed

pub fn is_encrypted(&self) -> bool

Check if data is encrypted

pub fn is_fragment(&self) -> bool

Check if this is a fragment (mobile-specific)

pub fn set_compressed(&mut self, compressed: bool)

Set compressed flag

pub fn set_encrypted(&mut self, encrypted: bool)

Set encrypted flag

pub fn set_fragment(&mut self, is_fragment: bool)

Set fragment flag

pub fn calculate_datacrc(data: &[u8]) -> u16

Calculate data CRC16 for body

pub fn verify_datacrc(&self, data: &[u8]) -> bool

Verify data CRC

pub fn encode(&self, buf: &mut BytesMut)

Encode header to bytes (16 bytes, big-endian)

pub fn decode(buf: &mut BytesMut) -> Result<Self>

Decode header from bytes

Trait Implementations

impl Clone for MobileProtocolHeader

fn clone(&self) -> MobileProtocolHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MobileProtocolHeader

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

Formats the value using the given formatter.