Struct MtuConfig 

pub struct MtuConfig {
    pub initial_mtu: u16,
    pub min_mtu: u16,
    pub discovery_enabled: bool,
    pub max_mtu: u16,
    pub auto_pqc_adjustment: bool,
}

MTU (Maximum Transmission Unit) configuration

Controls packet sizing for optimal network performance. Post-quantum cryptography requires larger packets due to bigger key sizes:

• ML-KEM-768: 1,184 byte public key + 1,088 byte ciphertext
• ML-DSA-65: 1,952 byte public key + 3,309 byte signature

The default configuration enables MTU discovery which automatically finds the optimal packet size for the network path.

Fields

initial_mtu: u16

Initial MTU to use before discovery (default: 1200)

Must be at least 1200 bytes per QUIC specification. For PQC-enabled connections, consider using 1500+ if network allows.

min_mtu: u16

Minimum MTU that must always work (default: 1200)

The connection will fall back to this if larger packets are lost. Must not exceed initial_mtu.

discovery_enabled: bool

Enable path MTU discovery (default: true)

When enabled, the connection probes for larger packet sizes to optimize throughput. Disable for constrained networks.

max_mtu: u16

Upper bound for MTU discovery probing (default: 1452)

For PQC connections, consider higher values (up to 4096) if the network path supports jumbo frames.

auto_pqc_adjustment: bool

Automatically adjust MTU for PQC handshakes (default: true)

When enabled, the connection will use larger MTU settings during PQC handshakes to accommodate large key exchanges.

Implementations

impl MtuConfig

pub fn pqc_optimized() -> Self

Configuration optimized for PQC (larger MTUs)

pub fn constrained() -> Self

Configuration for constrained networks (no discovery)

pub fn jumbo_frames() -> Self

Configuration for high-bandwidth networks with jumbo frames

Trait Implementations

impl Clone for MtuConfig

fn clone(&self) -> MtuConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MtuConfig

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

Formats the value using the given formatter.

impl Default for MtuConfig

fn default() -> Self

Returns the “default value” for a type.