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Add WebRTC transport to realtime start (#16960)

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Adds WebRTC startup to the experimental app-server
`thread/realtime/start` method with an optional transport enum. The
websocket path remains the default; WebRTC offers create the realtime
session through the shared start flow and emit the answer SDP via
`thread/realtime/sdp`.

---------

Co-authored-by: Codex <noreply@openai.com>
This commit is contained in:
Ahmed Ibrahim
2026-04-07 15:43:38 -07:00
committed by GitHub
parent 6c36e7d688
commit fb3dcfde1d
42 changed files with 1574 additions and 85 deletions
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39
codex-rs/app-server/tests/suite/v2/experimental_api.rs
View File

@@ -12,6 +12,7 @@ use codex_app_server_protocol::JSONRPCResponse;
use codex_app_server_protocol::MockExperimentalMethodParams;
use codex_app_server_protocol::RequestId;
use codex_app_server_protocol::ThreadRealtimeStartParams;
use codex_app_server_protocol::ThreadRealtimeStartTransport;
use codex_app_server_protocol::ThreadStartParams;
use codex_app_server_protocol::ThreadStartResponse;
use pretty_assertions::assert_eq;
@@ -75,6 +76,44 @@ async fn realtime_conversation_start_requires_experimental_api_capability() -> R
thread_id: "thr_123".to_string(),
prompt: "hello".to_string(),
session_id: None,
transport: None,
})
.await?;
let error = timeout(
DEFAULT_TIMEOUT,
mcp.read_stream_until_error_message(RequestId::Integer(request_id)),
)
.await??;
assert_experimental_capability_error(error, "thread/realtime/start");
Ok(())
}
#[tokio::test]
async fn realtime_webrtc_start_requires_experimental_api_capability() -> Result<()> {
let codex_home = TempDir::new()?;
let mut mcp = McpProcess::new(codex_home.path()).await?;
let init = mcp
.initialize_with_capabilities(
default_client_info(),
Some(InitializeCapabilities {
experimental_api: false,
opt_out_notification_methods: None,
}),
)
.await?;
let JSONRPCMessage::Response(_) = init else {
anyhow::bail!("expected initialize response, got {init:?}");
};
let request_id = mcp
.send_thread_realtime_start_request(ThreadRealtimeStartParams {
thread_id: "thr_123".to_string(),
prompt: "hello".to_string(),
session_id: None,
transport: Some(ThreadRealtimeStartTransport::Webrtc {
sdp: "v=offer\r\n".to_string(),
}),
})
.await?;
let error = timeout(