Struct SetupConfig 

pub struct SetupConfig {
    pub model: String,
    pub generation_config: Option<GenerationConfig>,
    pub system_instruction: Option<Content>,
    pub tools: Option<Vec<Tool>>,
    pub realtime_input_config: Option<RealtimeInputConfig>,
    pub session_resumption: Option<SessionResumptionConfig>,
    pub context_window_compression: Option<ContextWindowCompressionConfig>,
    pub input_audio_transcription: Option<AudioTranscriptionConfig>,
    pub output_audio_transcription: Option<AudioTranscriptionConfig>,
    pub proactivity: Option<ProactivityConfig>,
    pub history_config: Option<HistoryConfig>,
}

The first (and only) setup message, configuring the session.

model is the only required field. All others have sensible server defaults when omitted.

This is the canonical home for setup-field semantics in the crate. Keep model-family caveats and wire-format notes on these fields rather than restating them in standalone docs.

Fields

model: String

Model resource name, e.g. "models/gemini-3.1-flash-live-preview".

generation_config: Option<GenerationConfig>

Generation-time settings such as response modalities, voice, thinking, and sampling controls.

system_instruction: Option<Content>

System prompt or instruction content applied at session setup time.

tools: Option<Vec<Tool>>

Tool definitions available to the model for this session.

realtime_input_config: Option<RealtimeInputConfig>

Real-time audio/video interpretation settings including VAD behaviour.

session_resumption: Option<SessionResumptionConfig>

Opts the session into server-issued resume handles.

The session layer patches handle automatically during reconnects.

context_window_compression: Option<ContextWindowCompressionConfig>

Server-managed context compression settings.

input_audio_transcription: Option<AudioTranscriptionConfig>

Presence-activated input speech transcription ({} to enable).

output_audio_transcription: Option<AudioTranscriptionConfig>

Presence-activated output speech transcription ({} to enable).

proactivity: Option<ProactivityConfig>

Proactive audio (v1alpha, Gemini 2.5 only).

history_config: Option<HistoryConfig>

History bootstrapping (Gemini 3.1). This only affects how initial clientContent may be sent before the first realtimeInput.

Trait Implementations

impl Clone for SetupConfig

fn clone(&self) -> SetupConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SetupConfig

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

Formats the value using the given formatter.

impl Default for SetupConfig

fn default() -> SetupConfig

Returns the “default value” for a type.

impl Serialize for SetupConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.