Enum MaximumPacketSize 

pub enum MaximumPacketSize {
    Unlimited,
    Limit(NonZero<u32>),
}

Maximum packet size. Exceeding this is a protocol error.

Variants

Unlimited

There is no imposed limit on how large packets can be. The technical limit is crate::types::VarByteInt::MAX_ENCODABLE + 5 (size of fixed header).

Limit(NonZero<u32>)

There is a limit on how large packets can be. The packet size is the value of its remaining length plus the size of the fixed header. A value of 0 is not allowed by the specification. A value less than 2 does not make sense because every MQTT packet contains a fixed header of at least 2 bytes.

Trait Implementations

impl Clone for MaximumPacketSize

fn clone(&self) -> MaximumPacketSize

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaximumPacketSize

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

Formats the value using the given formatter.

impl Default for MaximumPacketSize

fn default() -> MaximumPacketSize

Returns the “default value” for a type.

impl PartialEq for MaximumPacketSize

fn eq(&self, other: &MaximumPacketSize) -> 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 Copy for MaximumPacketSize

impl Eq for MaximumPacketSize

impl StructuralPartialEq for MaximumPacketSize