Struct Ack 

pub struct Ack {
    pub message_type: Option<String>,
    pub ok: bool,
    pub reason: Option<String>,
    pub code: Option<u64>,
    pub v: Option<u32>,
}

A parsed {"type":"...","ok":bool,...} control-channel envelope — the server’s answer to any control message (first or update).

Fields

message_type: Option<String>

Envelope discriminator. Only "ack" and "error" are valid; it is optional at deserialization time so validation can turn a missing or unknown value into a stable Error::BadFrame instead of exposing a serde implementation detail.

ok: bool

The server’s error envelope carries no ok field. Defaulting to false preserves it as a rejection so its code and reason remain available to the caller.

reason: Option<String>

Present when ok is false: why the message was rejected.

code: Option<u64>

Present on a terminal error envelope. When supplied, the SDK preserves the same typed close/retry semantics as a QUIC application close.

v: Option<u32>

Present only on the FIRST control message’s ack: the wire version the server actually negotiated (min(client_max, SERVER_WIRE_VERSION)).

Trait Implementations

impl Clone for Ack

fn clone(&self) -> Ack

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Ack

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Ack

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.