Working clock stream. Propagate up write errors

sse_stream.h

@@ -1,4 +1,16 @@
 #pragma once
 
+#include <memory>
+
+class FastCGIRequest;
+
 class SSEStream {
+  public:
+	SSEStream(std::unique_ptr<FastCGIRequest> request);
+
+	[[nodiscard]] bool WriteEvent(const std::string& data, uint64_t id=0, const std::string& type="");
+	bool End();
+
+  private:
+	std::unique_ptr<FastCGIRequest> request_;
 };