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fix(realtime): consume ChatDeltas when C++ autoparser clears Response #9538

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Merged
mudler merged 1 commit into from
Apr 24, 2026
+27 −5
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fix(realtime): consume ChatDeltas when C++ autoparser clears Response #9538

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32 changes: 27 additions & 5 deletions core/http/endpoints/openai/realtime.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1315,13 +1315,35 @@ func triggerResponse(ctx context.Context, session *Session, conv *Conversation,
}
thinkingStartToken := reasoning.DetectThinkingStartToken(template, &config.ReasoningConfig)

reasoningText, responseWithoutReasoning := reasoning.ExtractReasoningWithConfig(rawResponse, thinkingStartToken, config.ReasoningConfig)
// When the C++ autoparser emitted ChatDeltas with actionable data,
// prefer them — the backend clears Reply.Message in that path and
// delivers parsed content/reasoning/tool-calls via the delta stream
// (see pkg/functions/chat_deltas.go, mirrored from chat.go's non-SSE
// handling). Without this, Response is empty and realtime would
// synthesize silence for replies that actually produced tokens.
var reasoningText, responseWithoutReasoning, textContent, cleanedResponse string
var toolCalls []functions.FuncCallResults
deltaToolCalls := functions.ToolCallsFromChatDeltas(pred.ChatDeltas)
deltaContent := functions.ContentFromChatDeltas(pred.ChatDeltas)
deltaReasoning := functions.ReasoningFromChatDeltas(pred.ChatDeltas)
if len(deltaToolCalls) > 0 || deltaContent != "" {
xlog.Debug("[ChatDeltas] realtime: using C++ autoparser deltas",
"tool_calls", len(deltaToolCalls),
"content_len", len(deltaContent),
"reasoning_len", len(deltaReasoning))
reasoningText = deltaReasoning
responseWithoutReasoning = deltaContent
textContent = deltaContent
cleanedResponse = deltaContent
toolCalls = deltaToolCalls
} else {
reasoningText, responseWithoutReasoning = reasoning.ExtractReasoningWithConfig(rawResponse, thinkingStartToken, config.ReasoningConfig)
textContent = functions.ParseTextContent(responseWithoutReasoning, config.FunctionsConfig)
cleanedResponse = functions.CleanupLLMResult(responseWithoutReasoning, config.FunctionsConfig)
toolCalls = functions.ParseFunctionCall(cleanedResponse, config.FunctionsConfig)
}
xlog.Debug("LLM Response", "reasoning", reasoningText, "response_without_reasoning", responseWithoutReasoning)

textContent := functions.ParseTextContent(responseWithoutReasoning, config.FunctionsConfig)
cleanedResponse := functions.CleanupLLMResult(responseWithoutReasoning, config.FunctionsConfig)
toolCalls := functions.ParseFunctionCall(cleanedResponse, config.FunctionsConfig)

xlog.Debug("Function call parsing", "textContent", textContent, "cleanedResponse", cleanedResponse, "toolCallsCount", len(toolCalls))

noActionName := "answer"
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