Struct Welcome 

pub struct Welcome {
    pub session_id: String,
    pub epoch: u32,
    pub negotiated_codec: Codec,
    pub negotiated_compression: Option<String>,
    pub server_time: i64,
    pub resume_window_ms: u32,
    pub features: Vec<String>,
}

Server Welcome frame – spec §5.3.

The Welcome frame is sent by the server immediately after successful authentication. It confirms the negotiated parameters and assigns the session.

Resume Window

The resume_window_ms field tells the client how long the server will retain session state after disconnection, enabling the client to reconnect and resume without losing messages.

Fields

session_id: String

Unique session identifier assigned by the server.

The client should include this value in subsequent Hello frames when attempting to resume the session.

epoch: u32

Monotonically increasing epoch counter for this session.

Each new session incarnation increments the epoch. The client must echo the epoch when resuming.

negotiated_codec: Codec

Content codec selected by the server from the client’s codec list.

All subsequent data frames on this connection MUST use this codec.

negotiated_compression: Option<String>

Compression algorithm selected by the server, or None if no compression is to be used.

server_time: i64

Server wall-clock time in milliseconds since the Unix epoch at the moment the Welcome was generated.

The client can use this together with client_clock to estimate round-trip time and clock skew.

resume_window_ms: u32

Duration in milliseconds for which the server will retain session state after disconnection.

A value of zero means the server does not support session resumption.

features: Vec<String>

List of protocol feature flags supported by the server.

Trait Implementations

impl Clone for Welcome

fn clone(&self) -> Welcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Welcome

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

Formats the value using the given formatter.