Add WriteMany()

request.h

@@ -30,9 +30,13 @@ class Request {
 	[[nodiscard]] bool Flush();
 	bool End();
 
+	template<typename...Args>
+	void WriteMany(const std::string_view& first, Args... more);
+
   private:
 	Header OutputHeader();
 	iovec OutputVec();
+	void WriteBodyLocked(const std::string_view& body);
 
 	Connection *conn_;
 	uint16_t request_id_ = 0;
@@ -45,4 +49,11 @@ class Request {
 	std::mutex output_mu_;
 };
 
+template<typename...Args>
+void Request::WriteMany(const std::string_view& first, Args... more) {
+	std::lock_guard<std::mutex> l(output_mu_);
+	WriteBodyLocked(first);
+	WriteMany(std::forward(more)...);
+}
+
 } // namespace firecgi