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Add a realtime delegation acknowledgement control (#36413)

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## What changed

- Add the optional `delegationAckFiller` field to `thread/realtime/start`.
- Forward explicit `true` or `false` values to V3 Frameless Bidi session payloads as `delegation.ack_filler`; leave the field absent when unspecified so the Realtime API default is preserved.
- Document that V1 and V2 ignore this setting.

## Testing

- Cover both boolean values in Frameless Bidi serialization and verify the WebRTC V3 session creation payload.

GitOrigin-RevId: 9fe8efd14e42738c3e86e3e9a8af81d0f4521244
This commit is contained in:
jiayuhuang-openai authored and copyberry committed 2026-08-01 01:17:26 +00:00
1 parent 4c219fdb1a
commit 6751b54cae
21 files changed
+162 -7
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codex-rs/codex-api/src/endpoint/realtime_websocket/methods.rs
+8
View File
@@ -384,6 +384,7 @@ impl RealtimeWebsocketWriter {
session_mode: RealtimeSessionMode,
output_modality: RealtimeOutputModality,
voice: RealtimeVoice,
delegation_ack_filler: Option<bool>,
) -> Result<(), ApiError> {
let session_mode = normalized_session_mode(self.event_parser, session_mode);
let message = session_update_message(
@@ -393,6 +394,7 @@ impl RealtimeWebsocketWriter {
session_mode,
output_modality,
voice,
delegation_ack_filler,
);
self.send_json(&message).await
}
@@ -868,6 +870,7 @@ impl RealtimeWebsocketClient {
config.session_mode,
config.output_modality,
config.voice,
config.delegation_ack_filler,
)
.await?;
}
@@ -2019,6 +2022,7 @@ mod tests {
RealtimeSessionConfig {
instructions: "backend prompt".to_string(),
initial_items: Vec::new(),
delegation_ack_filler: None,
model: Some("realtime-test-model".to_string()),
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,
@@ -2344,6 +2348,7 @@ mod tests {
RealtimeSessionConfig {
instructions: "backend prompt".to_string(),
initial_items: Vec::new(),
delegation_ack_filler: None,
model: Some("realtime-test-model".to_string()),
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::RealtimeV2,
@@ -2470,6 +2475,7 @@ mod tests {
RealtimeSessionConfig {
instructions: "backend prompt".to_string(),
initial_items: Vec::new(),
delegation_ack_filler: None,
model: Some("realtime-test-model".to_string()),
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::RealtimeV2,
@@ -2575,6 +2581,7 @@ mod tests {
RealtimeSessionConfig {
instructions: "backend prompt".to_string(),
initial_items: Vec::new(),
delegation_ack_filler: None,
model: Some("realtime-test-model".to_string()),
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,
@@ -2666,6 +2673,7 @@ mod tests {
RealtimeSessionConfig {
instructions: "backend prompt".to_string(),
initial_items: Vec::new(),
delegation_ack_filler: None,
model: Some("realtime-test-model".to_string()),
session_id: Some("conv_1".to_string()),
event_parser: RealtimeEventParser::V1,