feat: add heartbeat capability

main.cpp

@@ -11,6 +11,7 @@
 #include "lms.h"
 #include "commands.h"
 #include "activation.h"
+#include "heartbeat.h"
 #include "utils.h"
 #include "usage.h"
 #include "args.h"
@@ -246,6 +247,21 @@ int main(int argc, char* argv[])
                 return;
             }
 
+            if (msgMethod.compare("heartbeat_request") == 0)
+            {
+                // create the response
+                std::string response;
+                if (!heartbeat_create_response(response)) return;
+
+                // send it
+                web::websockets::client::websocket_outgoing_message send_websocket_msg;
+                std::string send_websocket_buffer(response);
+                send_websocket_msg.set_utf8_message(send_websocket_buffer);
+                client.send(send_websocket_msg).wait();
+
+                return;
+            }
+
             // process any messages we can
             //   - if success, done
             //   - if error, get out