Added session count in HTML

html/index.html

@@ -111,6 +111,10 @@
                     <div class="col-4">Uptime:</div>
                     <div class="col-8">{{Uptime}}</div>
                 </div>
+                <div class="row">
+                    <div class="col-4">RTSP sessions:</div>
+                    <div class="col-8">{{NumRTSPSessions}}</div>
+                </div>
                 <div class="row">
                     <div class="col-4">Free heap:</div>
                     <div class="col-8">{{FreeHeap}}b</div>

lib/rtsp_server/rtsp_server.cpp

@@ -10,6 +10,10 @@ rtsp_server::rtsp_server(OV2640 &cam, unsigned long interval, int port /*= 554*/
 	WiFiServer::begin();
 	timer_.every(interval, client_handler, this);
 }
+size_t rtsp_server::num_connected()
+{
+	return clients_.size();
+}
 
 void rtsp_server::doLoop()
 {

lib/rtsp_server/rtsp_server.h

@@ -14,6 +14,8 @@ public:
 
 	void doLoop();
 
+	size_t num_connected();
+
 private:
 	struct rtsp_client
 	{

src/main.cpp

@@ -80,7 +80,8 @@ void handle_root()
       {"NetworkState.OnLine", String(iotWebConf.getState() == iotwebconf::NetworkState::OnLine)},
       {"CameraInitialized", String(camera_init_result == ESP_OK)},
       {"CameraInitResult", "0x" + String(camera_init_result, 16)},
-      {"CameraInitResultText", esp_err_to_name(camera_init_result)}};
+      {"CameraInitResultText", esp_err_to_name(camera_init_result)},
+      {"NumRTSPSessions", camera_server != nullptr ? String(camera_server->num_connected()) : "N/A"}};
 
   web_server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
   auto html = template_render(file_data_index_html, substitutions);