diff --git a/internal/deepseek/protocol/constants.go b/internal/deepseek/protocol/constants.go
index 3cb6c4d..83daa31 100644
--- a/internal/deepseek/protocol/constants.go
+++ b/internal/deepseek/protocol/constants.go
@@ -159,6 +159,6 @@ func toStringSet(in []string) map[string]struct{} {
 
 const (
 	KeepAliveTimeout  = 5
-	StreamIdleTimeout = 90
-	MaxKeepaliveCount = 10
+	StreamIdleTimeout = 300
+	MaxKeepaliveCount = 40
 )
diff --git a/internal/httpapi/openai/chat/empty_retry_runtime.go b/internal/httpapi/openai/chat/empty_retry_runtime.go
index de2ff12..147024f 100644
--- a/internal/httpapi/openai/chat/empty_retry_runtime.go
+++ b/internal/httpapi/openai/chat/empty_retry_runtime.go
@@ -252,6 +252,9 @@ func (h *Handler) consumeChatStreamAttempt(r *http.Request, resp *http.Response,
 			}
 		},
 	})
+	if r.Context().Err() != nil {
+		return true, false
+	}
 	terminalWritten := streamRuntime.finalize(finalReason, allowDeferEmpty && finalReason != "content_filter")
 	if terminalWritten {
 		recordChatStreamHistory(streamRuntime, historySession)
diff --git a/internal/httpapi/openai/responses/empty_retry_runtime.go b/internal/httpapi/openai/responses/empty_retry_runtime.go
index 627f074..45d861d 100644
--- a/internal/httpapi/openai/responses/empty_retry_runtime.go
+++ b/internal/httpapi/openai/responses/empty_retry_runtime.go
@@ -223,6 +223,9 @@ func (h *Handler) consumeResponsesStreamAttempt(r *http.Request, resp *http.Resp
 			}
 		},
 	})
+	if r.Context().Err() != nil {
+		return true, false
+	}
 	terminalWritten := streamRuntime.finalize(finalReason, allowDeferEmpty && finalReason != "content_filter")
 	if terminalWritten {
 		return true, false