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copilot: Only set Copilot-Vision-Request header for vision requests (#33552)

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Closes #31951

The fix is copied and translated from copilot chat actual implementation
code:
ad7cbcae9a/src/platform/openai/node/fetch.ts (L493C1-L495C3)

Release Notes:

- Fix copilot failing due to missing `Copilot-Vision-Request` from
request.
This commit is contained in:
Umesh Yadav 2025-06-28 01:07:26 +05:30 • committed by GitHub
parent f12b0dddf4
commit 5fbb7b0d40
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GPG key ID: B5690EEEBB952194
1 changed files with 15 additions and 11 deletions
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26
crates/copilot/src/copilot_chat.rs
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@ -698,16 +698,16 @@ async fn stream_completion(
completion_url: Arc<str>,
request: Request,
) -> Result<BoxStream<'static, Result<ResponseEvent>>> {
let is_vision_request = request.messages.last().map_or(false, |message| match message {
ChatMessage::User { content }
| ChatMessage::Assistant { content, .. }
| ChatMessage::Tool { content, .. } => {
matches!(content, ChatMessageContent::Multipart(parts) if parts.iter().any(|part| matches!(part, ChatMessagePart::Image { .. })))
}
_ => false,
});
let is_vision_request = request.messages.iter().any(|message| match message {
ChatMessage::User { content }
| ChatMessage::Assistant { content, .. }
| ChatMessage::Tool { content, .. } => {
matches!(content, ChatMessageContent::Multipart(parts) if parts.iter().any(|part| matches!(part, ChatMessagePart::Image { .. })))
}
_ => false,
});
let request_builder = HttpRequest::builder()
let mut request_builder = HttpRequest::builder()
.method(Method::POST)
.uri(completion_url.as_ref())
.header(
@ -719,8 +719,12 @@ async fn stream_completion(
)
.header("Authorization", format!("Bearer {}", api_key))
.header("Content-Type", "application/json")
.header("Copilot-Integration-Id", "vscode-chat")
.header("Copilot-Vision-Request", is_vision_request.to_string());
.header("Copilot-Integration-Id", "vscode-chat");
if is_vision_request {
request_builder =
request_builder.header("Copilot-Vision-Request", is_vision_request.to_string());
}
let is_streaming = request.stream;