Track streams

stream.h

@@ -15,10 +15,21 @@ class Stream {
 	bool WriteEvent(const std::string& data, uint64_t id=0, const std::string& type="");
 	bool End();
 
+	std::chrono::steady_clock::time_point LastMessageTime();
+	void Close();
+
   private:
 	firecgi::Request* request_;
 
 	std::function<void()> on_close_;
+
+	std::mutex mu_;
+	std::chrono::steady_clock::time_point last_message_time_;
+};
+
+class IsFresherStream {
+  public:
+	bool operator() (Stream* a, Stream* b) const;
 };
 
 } // namespace firesse