Chore: remove response model check and rely on header model for downgrade (#12061)

### Summary
Ensure that we use the model value from the response header only so that
we are guaranteed with the correct slug name. We are no longer checking
against the model value from response so that we are less likely to have
false positive.

There are two different treatments - for SSE we use the header from the
response and for websocket we check top-level events.
This commit is contained in:
Shijie Rao 2026-02-17 17:50:06 -08:00 committed by GitHub
parent 31cbebd3c2
commit b3a8571219
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
5 changed files with 126 additions and 63 deletions

10
MODULE.bazel.lock generated
View file

@ -686,11 +686,11 @@
"chrono_0.4.43": "{\"dependencies\":[{\"features\":[\"derive\"],\"name\":\"arbitrary\",\"optional\":true,\"req\":\"^1.0.0\"},{\"kind\":\"dev\",\"name\":\"bincode\",\"req\":\"^1.3.0\"},{\"name\":\"defmt\",\"optional\":true,\"req\":\"^1.0.1\"},{\"features\":[\"fallback\"],\"name\":\"iana-time-zone\",\"optional\":true,\"req\":\"^0.1.45\",\"target\":\"cfg(unix)\"},{\"name\":\"js-sys\",\"optional\":true,\"req\":\"^0.3\",\"target\":\"cfg(all(target_arch = \\\"wasm32\\\", not(any(target_os = \\\"emscripten\\\", target_os = \\\"wasi\\\"))))\"},{\"default_features\":false,\"name\":\"num-traits\",\"req\":\"^0.2\"},{\"name\":\"pure-rust-locales\",\"optional\":true,\"req\":\"^0.8.2\"},{\"default_features\":false,\"name\":\"rkyv\",\"optional\":true,\"req\":\"^0.7.43\"},{\"default_features\":false,\"name\":\"serde\",\"optional\":true,\"req\":\"^1.0.99\"},{\"default_features\":false,\"kind\":\"dev\",\"name\":\"serde_derive\",\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"serde_json\",\"req\":\"^1\"},{\"kind\":\"dev\",\"name\":\"similar-asserts\",\"req\":\"^1.6.1\"},{\"name\":\"wasm-bindgen\",\"optional\":true,\"req\":\"^0.2\",\"target\":\"cfg(all(target_arch = \\\"wasm32\\\", not(any(target_os = \\\"emscripten\\\", target_os = \\\"wasi\\\"))))\"},{\"kind\":\"dev\",\"name\":\"wasm-bindgen-test\",\"req\":\"^0.3\",\"target\":\"cfg(all(target_arch = \\\"wasm32\\\", not(any(target_os = \\\"emscripten\\\", target_os = \\\"wasi\\\"))))\"},{\"kind\":\"dev\",\"name\":\"windows-bindgen\",\"req\":\"^0.66\"},{\"name\":\"windows-link\",\"optional\":true,\"req\":\"^0.2\",\"target\":\"cfg(windows)\"}],\"features\":{\"__internal_bench\":[],\"alloc\":[],\"clock\":[\"winapi\",\"iana-time-zone\",\"now\"],\"core-error\":[],\"default\":[\"clock\",\"std\",\"oldtime\",\"wasmbind\"],\"defmt\":[\"dep:defmt\",\"pure-rust-locales?/defmt\"],\"libc\":[],\"now\":[\"std\"],\"oldtime\":[],\"rkyv\":[\"dep:rkyv\",\"rkyv/size_32\"],\"rkyv-16\":[\"dep:rkyv\",\"rkyv?/size_16\"],\"rkyv-32\":[\"dep:rkyv\",\"rkyv?/size_32\"],\"rkyv-64\":[\"dep:rkyv\",\"rkyv?/size_64\"],\"rkyv-validation\":[\"rkyv?/validation\"],\"std\":[\"alloc\"],\"unstable-locales\":[\"pure-rust-locales\"],\"wasmbind\":[\"wasm-bindgen\",\"js-sys\"],\"winapi\":[\"windows-link\"]}}",
"chunked_transfer_1.5.0": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"criterion\",\"req\":\"^0.3\"}],\"features\":{}}",
"cipher_0.4.4": "{\"dependencies\":[{\"name\":\"blobby\",\"optional\":true,\"req\":\"^0.3\"},{\"name\":\"crypto-common\",\"req\":\"^0.1.6\"},{\"name\":\"inout\",\"req\":\"^0.1\"},{\"default_features\":false,\"name\":\"zeroize\",\"optional\":true,\"req\":\"^1.5\"}],\"features\":{\"alloc\":[],\"block-padding\":[\"inout/block-padding\"],\"dev\":[\"blobby\"],\"rand_core\":[\"crypto-common/rand_core\"],\"std\":[\"alloc\",\"crypto-common/std\",\"inout/std\"]}}",
"clap_4.5.56": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.14\"},{\"default_features\":false,\"kind\":\"dev\",\"name\":\"clap-cargo\",\"req\":\"^0.15.0\"},{\"default_features\":false,\"name\":\"clap_builder\",\"req\":\"=4.5.56\"},{\"name\":\"clap_derive\",\"optional\":true,\"req\":\"=4.5.55\"},{\"kind\":\"dev\",\"name\":\"jiff\",\"req\":\"^0.2.3\"},{\"kind\":\"dev\",\"name\":\"rustversion\",\"req\":\"^1.0.15\"},{\"kind\":\"dev\",\"name\":\"semver\",\"req\":\"^1.0.26\"},{\"kind\":\"dev\",\"name\":\"shlex\",\"req\":\"^1.3.0\"},{\"features\":[\"term-svg\"],\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.16\"},{\"kind\":\"dev\",\"name\":\"trybuild\",\"req\":\"^1.0.91\"},{\"default_features\":false,\"features\":[\"color-auto\",\"diff\",\"examples\"],\"kind\":\"dev\",\"name\":\"trycmd\",\"req\":\"^0.15.3\"}],\"features\":{\"cargo\":[\"clap_builder/cargo\"],\"color\":[\"clap_builder/color\"],\"debug\":[\"clap_builder/debug\",\"clap_derive?/debug\"],\"default\":[\"std\",\"color\",\"help\",\"usage\",\"error-context\",\"suggestions\"],\"deprecated\":[\"clap_builder/deprecated\",\"clap_derive?/deprecated\"],\"derive\":[\"dep:clap_derive\"],\"env\":[\"clap_builder/env\"],\"error-context\":[\"clap_builder/error-context\"],\"help\":[\"clap_builder/help\"],\"std\":[\"clap_builder/std\"],\"string\":[\"clap_builder/string\"],\"suggestions\":[\"clap_builder/suggestions\"],\"unicode\":[\"clap_builder/unicode\"],\"unstable-derive-ui-tests\":[],\"unstable-doc\":[\"clap_builder/unstable-doc\",\"derive\"],\"unstable-ext\":[\"clap_builder/unstable-ext\"],\"unstable-markdown\":[\"clap_derive/unstable-markdown\"],\"unstable-styles\":[\"clap_builder/unstable-styles\"],\"unstable-v5\":[\"clap_builder/unstable-v5\",\"clap_derive?/unstable-v5\",\"deprecated\"],\"usage\":[\"clap_builder/usage\"],\"wrap_help\":[\"clap_builder/wrap_help\"]}}",
"clap_builder_4.5.56": "{\"dependencies\":[{\"name\":\"anstream\",\"optional\":true,\"req\":\"^0.6.7\"},{\"name\":\"anstyle\",\"req\":\"^1.0.8\"},{\"name\":\"backtrace\",\"optional\":true,\"req\":\"^0.3.73\"},{\"name\":\"clap_lex\",\"req\":\"^0.7.4\"},{\"kind\":\"dev\",\"name\":\"color-print\",\"req\":\"^0.3.6\"},{\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.16\"},{\"kind\":\"dev\",\"name\":\"static_assertions\",\"req\":\"^1.1.0\"},{\"name\":\"strsim\",\"optional\":true,\"req\":\"^0.11.0\"},{\"name\":\"terminal_size\",\"optional\":true,\"req\":\"^0.4.0\"},{\"kind\":\"dev\",\"name\":\"unic-emoji-char\",\"req\":\"^0.9.0\"},{\"name\":\"unicase\",\"optional\":true,\"req\":\"^2.6.0\"},{\"name\":\"unicode-width\",\"optional\":true,\"req\":\"^0.2.0\"}],\"features\":{\"cargo\":[],\"color\":[\"dep:anstream\"],\"debug\":[\"dep:backtrace\"],\"default\":[\"std\",\"color\",\"help\",\"usage\",\"error-context\",\"suggestions\"],\"deprecated\":[],\"env\":[],\"error-context\":[],\"help\":[],\"std\":[\"anstyle/std\"],\"string\":[],\"suggestions\":[\"dep:strsim\",\"error-context\"],\"unicode\":[\"dep:unicode-width\",\"dep:unicase\"],\"unstable-doc\":[\"cargo\",\"wrap_help\",\"env\",\"unicode\",\"string\",\"unstable-ext\"],\"unstable-ext\":[],\"unstable-styles\":[\"color\"],\"unstable-v5\":[\"deprecated\"],\"usage\":[],\"wrap_help\":[\"help\",\"dep:terminal_size\"]}}",
"clap_4.5.58": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.14\"},{\"default_features\":false,\"kind\":\"dev\",\"name\":\"clap-cargo\",\"req\":\"^0.15.0\"},{\"default_features\":false,\"name\":\"clap_builder\",\"req\":\"=4.5.58\"},{\"name\":\"clap_derive\",\"optional\":true,\"req\":\"=4.5.55\"},{\"kind\":\"dev\",\"name\":\"jiff\",\"req\":\"^0.2.3\"},{\"kind\":\"dev\",\"name\":\"rustversion\",\"req\":\"^1.0.15\"},{\"kind\":\"dev\",\"name\":\"semver\",\"req\":\"^1.0.26\"},{\"kind\":\"dev\",\"name\":\"shlex\",\"req\":\"^1.3.0\"},{\"features\":[\"term-svg\"],\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.16\"},{\"kind\":\"dev\",\"name\":\"trybuild\",\"req\":\"^1.0.91\"},{\"default_features\":false,\"features\":[\"color-auto\",\"diff\",\"examples\"],\"kind\":\"dev\",\"name\":\"trycmd\",\"req\":\"^0.15.3\"}],\"features\":{\"cargo\":[\"clap_builder/cargo\"],\"color\":[\"clap_builder/color\"],\"debug\":[\"clap_builder/debug\",\"clap_derive?/debug\"],\"default\":[\"std\",\"color\",\"help\",\"usage\",\"error-context\",\"suggestions\"],\"deprecated\":[\"clap_builder/deprecated\",\"clap_derive?/deprecated\"],\"derive\":[\"dep:clap_derive\"],\"env\":[\"clap_builder/env\"],\"error-context\":[\"clap_builder/error-context\"],\"help\":[\"clap_builder/help\"],\"std\":[\"clap_builder/std\"],\"string\":[\"clap_builder/string\"],\"suggestions\":[\"clap_builder/suggestions\"],\"unicode\":[\"clap_builder/unicode\"],\"unstable-derive-ui-tests\":[],\"unstable-doc\":[\"clap_builder/unstable-doc\",\"derive\"],\"unstable-ext\":[\"clap_builder/unstable-ext\"],\"unstable-markdown\":[\"clap_derive/unstable-markdown\"],\"unstable-styles\":[\"clap_builder/unstable-styles\"],\"unstable-v5\":[\"clap_builder/unstable-v5\",\"clap_derive?/unstable-v5\",\"deprecated\"],\"usage\":[\"clap_builder/usage\"],\"wrap_help\":[\"clap_builder/wrap_help\"]}}",
"clap_builder_4.5.58": "{\"dependencies\":[{\"name\":\"anstream\",\"optional\":true,\"req\":\"^0.6.7\"},{\"name\":\"anstyle\",\"req\":\"^1.0.8\"},{\"name\":\"backtrace\",\"optional\":true,\"req\":\"^0.3.73\"},{\"name\":\"clap_lex\",\"req\":\"^1.0.0\"},{\"kind\":\"dev\",\"name\":\"color-print\",\"req\":\"^0.3.6\"},{\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.16\"},{\"kind\":\"dev\",\"name\":\"static_assertions\",\"req\":\"^1.1.0\"},{\"name\":\"strsim\",\"optional\":true,\"req\":\"^0.11.0\"},{\"name\":\"terminal_size\",\"optional\":true,\"req\":\"^0.4.0\"},{\"kind\":\"dev\",\"name\":\"unic-emoji-char\",\"req\":\"^0.9.0\"},{\"name\":\"unicase\",\"optional\":true,\"req\":\"^2.6.0\"},{\"name\":\"unicode-width\",\"optional\":true,\"req\":\"^0.2.0\"}],\"features\":{\"cargo\":[],\"color\":[\"dep:anstream\"],\"debug\":[\"dep:backtrace\"],\"default\":[\"std\",\"color\",\"help\",\"usage\",\"error-context\",\"suggestions\"],\"deprecated\":[],\"env\":[],\"error-context\":[],\"help\":[],\"std\":[\"anstyle/std\"],\"string\":[],\"suggestions\":[\"dep:strsim\",\"error-context\"],\"unicode\":[\"dep:unicode-width\",\"dep:unicase\"],\"unstable-doc\":[\"cargo\",\"wrap_help\",\"env\",\"unicode\",\"string\",\"unstable-ext\"],\"unstable-ext\":[],\"unstable-styles\":[\"color\"],\"unstable-v5\":[\"deprecated\"],\"usage\":[],\"wrap_help\":[\"help\",\"dep:terminal_size\"]}}",
"clap_complete_4.5.65": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.14\"},{\"default_features\":false,\"features\":[\"std\"],\"name\":\"clap\",\"req\":\"^4.5.20\"},{\"default_features\":false,\"features\":[\"std\",\"derive\",\"help\"],\"kind\":\"dev\",\"name\":\"clap\",\"req\":\"^4.5.20\"},{\"name\":\"clap_lex\",\"optional\":true,\"req\":\"^0.7.0\"},{\"name\":\"completest\",\"optional\":true,\"req\":\"^0.4.2\"},{\"name\":\"completest-pty\",\"optional\":true,\"req\":\"^0.5.5\"},{\"name\":\"is_executable\",\"optional\":true,\"req\":\"^1.0.1\"},{\"name\":\"shlex\",\"optional\":true,\"req\":\"^1.3.0\"},{\"features\":[\"diff\",\"dir\",\"examples\"],\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6.0\"},{\"default_features\":false,\"features\":[\"color-auto\",\"diff\",\"examples\"],\"kind\":\"dev\",\"name\":\"trycmd\",\"req\":\"^0.15.1\"}],\"features\":{\"debug\":[\"clap/debug\"],\"default\":[],\"unstable-doc\":[\"unstable-dynamic\"],\"unstable-dynamic\":[\"dep:clap_lex\",\"dep:shlex\",\"dep:is_executable\",\"clap/unstable-ext\"],\"unstable-shell-tests\":[\"dep:completest\",\"dep:completest-pty\"]}}",
"clap_derive_4.5.55": "{\"dependencies\":[{\"name\":\"anstyle\",\"optional\":true,\"req\":\"^1.0.10\"},{\"name\":\"heck\",\"req\":\"^0.5.0\"},{\"name\":\"proc-macro2\",\"req\":\"^1.0.69\"},{\"default_features\":false,\"name\":\"pulldown-cmark\",\"optional\":true,\"req\":\"^0.13.0\"},{\"name\":\"quote\",\"req\":\"^1.0.9\"},{\"features\":[\"full\"],\"name\":\"syn\",\"req\":\"^2.0.8\"}],\"features\":{\"debug\":[],\"default\":[],\"deprecated\":[],\"raw-deprecated\":[\"deprecated\"],\"unstable-markdown\":[\"dep:pulldown-cmark\",\"dep:anstyle\"],\"unstable-v5\":[\"deprecated\"]}}",
"clap_lex_0.7.7": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.14\"}],\"features\":{}}",
"clap_lex_1.0.0": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"automod\",\"req\":\"^1.0.14\"}],\"features\":{}}",
"clipboard-win_5.4.1": "{\"dependencies\":[{\"name\":\"error-code\",\"req\":\"^3\",\"target\":\"cfg(windows)\"},{\"name\":\"windows-win\",\"optional\":true,\"req\":\"^3\",\"target\":\"cfg(windows)\"}],\"features\":{\"monitor\":[\"windows-win\"],\"std\":[\"error-code/std\"]}}",
"cmake_0.1.57": "{\"dependencies\":[{\"name\":\"cc\",\"req\":\"^1.2.46\"}],\"features\":{}}",
"cmp_any_0.8.1": "{\"dependencies\":[],\"features\":{}}",
@ -790,9 +790,9 @@
"enumflags2_0.7.12": "{\"dependencies\":[{\"name\":\"enumflags2_derive\",\"req\":\"=0.7.12\"},{\"default_features\":false,\"name\":\"serde\",\"optional\":true,\"req\":\"^1.0.0\"}],\"features\":{\"std\":[]}}",
"enumflags2_derive_0.7.12": "{\"dependencies\":[{\"name\":\"proc-macro2\",\"req\":\"^1.0\"},{\"name\":\"quote\",\"req\":\"^1.0\"},{\"default_features\":false,\"features\":[\"parsing\",\"printing\",\"derive\",\"proc-macro\"],\"name\":\"syn\",\"req\":\"^2.0\"}],\"features\":{}}",
"env-flags_0.1.1": "{\"dependencies\":[],\"features\":{}}",
"env_filter_0.1.4": "{\"dependencies\":[{\"features\":[\"std\"],\"name\":\"log\",\"req\":\"^0.4.8\"},{\"default_features\":false,\"features\":[\"std\",\"perf\"],\"name\":\"regex\",\"optional\":true,\"req\":\"^1.0.3\"},{\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6\"}],\"features\":{\"default\":[\"regex\"],\"regex\":[\"dep:regex\"]}}",
"env_filter_1.0.0": "{\"dependencies\":[{\"features\":[\"std\"],\"name\":\"log\",\"req\":\"^0.4.8\"},{\"default_features\":false,\"features\":[\"std\",\"perf\"],\"name\":\"regex\",\"optional\":true,\"req\":\"^1.0.3\"},{\"kind\":\"dev\",\"name\":\"snapbox\",\"req\":\"^0.6\"}],\"features\":{\"default\":[\"regex\"],\"regex\":[\"dep:regex\"]}}",
"env_home_0.1.0": "{\"dependencies\":[],\"features\":{}}",
"env_logger_0.11.8": "{\"dependencies\":[{\"default_features\":false,\"features\":[\"wincon\"],\"name\":\"anstream\",\"optional\":true,\"req\":\"^0.6.11\"},{\"name\":\"anstyle\",\"optional\":true,\"req\":\"^1.0.6\"},{\"default_features\":false,\"name\":\"env_filter\",\"req\":\"^0.1.0\"},{\"default_features\":false,\"features\":[\"std\"],\"name\":\"jiff\",\"optional\":true,\"req\":\"^0.2.3\"},{\"features\":[\"std\"],\"name\":\"log\",\"req\":\"^0.4.21\"}],\"features\":{\"auto-color\":[\"color\",\"anstream/auto\"],\"color\":[\"dep:anstream\",\"dep:anstyle\"],\"default\":[\"auto-color\",\"humantime\",\"regex\"],\"humantime\":[\"dep:jiff\"],\"kv\":[\"log/kv\"],\"regex\":[\"env_filter/regex\"],\"unstable-kv\":[\"kv\"]}}",
"env_logger_0.11.9": "{\"dependencies\":[{\"default_features\":false,\"features\":[\"wincon\"],\"name\":\"anstream\",\"optional\":true,\"req\":\"^0.6.11\"},{\"name\":\"anstyle\",\"optional\":true,\"req\":\"^1.0.6\"},{\"default_features\":false,\"name\":\"env_filter\",\"req\":\"^1.0.0\"},{\"default_features\":false,\"features\":[\"std\"],\"name\":\"jiff\",\"optional\":true,\"req\":\"^0.2.3\"},{\"features\":[\"std\"],\"name\":\"log\",\"req\":\"^0.4.21\"}],\"features\":{\"auto-color\":[\"color\",\"anstream/auto\"],\"color\":[\"dep:anstream\",\"dep:anstyle\"],\"default\":[\"auto-color\",\"humantime\",\"regex\"],\"humantime\":[\"dep:jiff\"],\"kv\":[\"log/kv\"],\"regex\":[\"env_filter/regex\"],\"unstable-kv\":[\"kv\"]}}",
"equivalent_1.0.2": "{\"dependencies\":[],\"features\":{}}",
"erased-serde_0.3.31": "{\"dependencies\":[{\"kind\":\"dev\",\"name\":\"rustversion\",\"req\":\"^1.0.13\"},{\"default_features\":false,\"name\":\"serde\",\"req\":\"^1.0.166\"},{\"kind\":\"dev\",\"name\":\"serde_cbor\",\"req\":\"^0.11.2\"},{\"kind\":\"dev\",\"name\":\"serde_derive\",\"req\":\"^1.0.166\"},{\"kind\":\"dev\",\"name\":\"serde_json\",\"req\":\"^1.0.99\"},{\"features\":[\"diff\"],\"kind\":\"dev\",\"name\":\"trybuild\",\"req\":\"^1.0.83\"}],\"features\":{\"alloc\":[\"serde/alloc\"],\"default\":[\"std\"],\"std\":[\"serde/std\"],\"unstable-debug\":[]}}",
"errno_0.3.14": "{\"dependencies\":[{\"default_features\":false,\"name\":\"libc\",\"req\":\"^0.2\",\"target\":\"cfg(target_os=\\\"hermit\\\")\"},{\"default_features\":false,\"name\":\"libc\",\"req\":\"^0.2\",\"target\":\"cfg(target_os=\\\"wasi\\\")\"},{\"default_features\":false,\"name\":\"libc\",\"req\":\"^0.2\",\"target\":\"cfg(unix)\"},{\"features\":[\"Win32_Foundation\",\"Win32_System_Diagnostics_Debug\"],\"name\":\"windows-sys\",\"req\":\">=0.52, <0.62\",\"target\":\"cfg(windows)\"}],\"features\":{\"default\":[\"std\"],\"std\":[\"libc/std\"]}}",

View file

@ -99,7 +99,9 @@ async fn response_model_field_mismatch_emits_model_rerouted_notification_v2_when
"type": "response.created",
"response": {
"id": "resp-1",
"model": SERVER_MODEL,
"headers": {
"OpenAI-Model": SERVER_MODEL
}
}
}),
responses::ev_assistant_message("msg-1", "Done"),

View file

@ -167,6 +167,7 @@ struct ResponseCompletedOutputTokensDetails {
pub struct ResponsesStreamEvent {
#[serde(rename = "type")]
pub(crate) kind: String,
headers: Option<Value>,
response: Option<Value>,
item: Option<Value>,
delta: Option<String>,
@ -179,20 +180,27 @@ impl ResponsesStreamEvent {
&self.kind
}
/// Returns the effective model reported by the server, if present.
///
/// Precedence:
/// 1. `response.headers` for standard Responses stream events.
/// 2. top-level `headers` for websocket metadata events (for example
/// `codex.response.metadata`).
pub fn response_model(&self) -> Option<String> {
self.response.as_ref().and_then(extract_server_model)
}
}
let response_headers_model = self
.response
.as_ref()
.and_then(|response| response.get("headers"))
.and_then(header_openai_model_value_from_json);
fn extract_server_model(value: &Value) -> Option<String> {
value
.get("model")
.and_then(json_value_as_string)
.or_else(|| {
value
.get("headers")
.and_then(header_openai_model_value_from_json)
})
match response_headers_model {
Some(model) => Some(model),
None => self
.headers
.as_ref()
.and_then(header_openai_model_value_from_json),
}
}
}
fn header_openai_model_value_from_json(value: &Value) -> Option<String> {
@ -963,7 +971,7 @@ mod tests {
}
#[tokio::test]
async fn process_sse_emits_server_model_from_response_payload() {
async fn process_sse_ignores_response_model_field_in_payload() {
let events = run_sse(vec![
json!({
"type": "response.created",
@ -982,14 +990,10 @@ mod tests {
])
.await;
assert_eq!(events.len(), 3);
assert_eq!(events.len(), 2);
assert_matches!(&events[0], ResponseEvent::Created);
assert_matches!(
&events[0],
ResponseEvent::ServerModel(model) if model == CYBER_RESTRICTED_MODEL_FOR_TESTS
);
assert_matches!(&events[1], ResponseEvent::Created);
assert_matches!(
&events[2],
&events[1],
ResponseEvent::Completed {
response_id,
token_usage: None,
@ -1035,43 +1039,41 @@ mod tests {
);
}
#[tokio::test]
async fn process_sse_emits_server_model_again_when_response_model_changes() {
let events = run_sse(vec![
json!({
"type": "response.created",
"response": {
"id": "resp-1",
"model": "gpt-5.2-codex"
}
}),
json!({
"type": "response.completed",
"response": {
"id": "resp-1",
"model": "gpt-5.3-codex"
}
}),
])
.await;
#[test]
fn responses_stream_event_response_model_reads_top_level_headers() {
let ev: ResponsesStreamEvent = serde_json::from_value(json!({
"type": "codex.response.metadata",
"headers": {
"openai-model": CYBER_RESTRICTED_MODEL_FOR_TESTS,
}
}))
.expect("expected event to deserialize");
assert_eq!(events.len(), 4);
assert_matches!(
&events[0],
ResponseEvent::ServerModel(model) if model == "gpt-5.2-codex"
assert_eq!(
ev.response_model().as_deref(),
Some(CYBER_RESTRICTED_MODEL_FOR_TESTS)
);
assert_matches!(&events[1], ResponseEvent::Created);
assert_matches!(
&events[2],
ResponseEvent::ServerModel(model) if model == "gpt-5.3-codex"
);
assert_matches!(
&events[3],
ResponseEvent::Completed {
response_id,
token_usage: None,
can_append: false
} if response_id == "resp-1"
}
#[test]
fn responses_stream_event_response_model_prefers_response_headers() {
let ev: ResponsesStreamEvent = serde_json::from_value(json!({
"type": "response.created",
"headers": {
"openai-model": "top-level-model"
},
"response": {
"id": "resp-1",
"headers": {
"openai-model": CYBER_RESTRICTED_MODEL_FOR_TESTS
}
}
}))
.expect("expected event to deserialize");
assert_eq!(
ev.response_model().as_deref(),
Some(CYBER_RESTRICTED_MODEL_FOR_TESTS)
);
}

View file

@ -2440,7 +2440,9 @@ impl Session {
server_model: String,
) -> bool {
let requested_model = turn_context.model_info.slug.clone();
if server_model == requested_model {
let server_model_normalized = server_model.to_ascii_lowercase();
let requested_model_normalized = requested_model.to_ascii_lowercase();
if server_model_normalized == requested_model_normalized {
info!("server reported model {server_model} (matches requested model)");
return false;
}

View file

@ -121,7 +121,9 @@ async fn response_model_field_mismatch_emits_warning_when_header_matches_request
"type": "response.created",
"response": {
"id": "resp-1",
"model": SERVER_MODEL,
"headers": {
"OpenAI-Model": SERVER_MODEL
}
}
}),
core_test_support::responses::ev_completed("resp-1"),
@ -250,3 +252,58 @@ async fn openai_model_header_mismatch_only_emits_one_warning_per_turn() -> Resul
Ok(())
}
#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn openai_model_header_casing_only_mismatch_does_not_warn() -> Result<()> {
skip_if_no_network!(Ok(()));
let server = start_mock_server().await;
let requested_header = REQUESTED_MODEL.to_ascii_uppercase();
let response = sse_response(sse_completed("resp-1"))
.insert_header("OpenAI-Model", requested_header.as_str());
let _mock = mount_response_once(&server, response).await;
let mut builder = test_codex().with_model(REQUESTED_MODEL);
let test = builder.build(&server).await?;
test.codex
.submit(Op::UserTurn {
items: vec![UserInput::Text {
text: "trigger casing check".to_string(),
text_elements: Vec::new(),
}],
final_output_json_schema: None,
cwd: test.cwd_path().to_path_buf(),
approval_policy: AskForApproval::Never,
sandbox_policy: SandboxPolicy::DangerFullAccess,
model: REQUESTED_MODEL.to_string(),
effort: test.config.model_reasoning_effort,
summary: ReasoningSummary::Auto,
collaboration_mode: None,
personality: None,
})
.await?;
let mut reroute_count = 0;
let mut warning_count = 0;
loop {
let event = wait_for_event(&test.codex, |_| true).await;
match event {
EventMsg::ModelReroute(_) => reroute_count += 1,
EventMsg::Warning(warning)
if warning
.message
.contains("flagged for potentially high-risk cyber activity") =>
{
warning_count += 1;
}
EventMsg::TurnComplete(_) => break,
_ => {}
}
}
assert_eq!(reroute_count, 0);
assert_eq!(warning_count, 0);
Ok(())
}