Add check if connected and remove block list and removing of old data.

app/inc/App.hpp

@@ -42,4 +42,6 @@ private:
   Rectangle genTextBox;
   Rectangle simTextBox;
   float simil = 100.0f;
+
+  Color appColor = BLUE;
 };

app/inc/DnaStore.hpp

@@ -7,4 +7,5 @@ namespace DnaStore
   void saveVec(DnaManagerData *data);
   void saveGen(DnaManagerData *data);
   void sync();
+  bool ping();
 } // namespace DnaStore

app/src/App.cpp

@@ -114,6 +114,10 @@ void App::init(int screenWidth, int screenHeight)
   float recPosX = screenWidth * 0.3f;
   disLikeBox = {0, posY, (float)recPosX, (float)screenWidth};
   likeBox = {screenWidth - recPosX, posY, (float)recPosX, (float)screenWidth};
+
+  if(!DnaStore::ping()){
+    appColor = RED;
+  }
 }
 
 void App::upTex(Liked liked)
@@ -202,7 +206,7 @@ void App::update()
 
 void App::draw()
 {
-  ClearBackground(BLUE);
+  ClearBackground(appColor);
 
   Rectangle source = {0, 0, (float)screenWidth, (float)-screenWidth};
   Vector2 origin = {0.0f, 0.0f};

app/src/DnaStore.cpp

@@ -161,6 +161,20 @@ void DnaStore::sync()
   t.detach();
 }
 
+bool DnaStore::ping(){
+  int sock = TcpSocket::connectt(HOST_NAME, keyPort);
+  if (sock < 0)
+  {
+    return false;
+  }
+
+  int64_t header = 0;
+  TcpSocket::recvt(sock, &header, sizeof(header));
+  TcpSocket::closet(sock);
+
+  return header == StartHeader;
+}
+
 void client(std::string_view prefix)
 {
   constexpr int extra_buff = 22; // len of 2**31 -> 2147483648 plus the pattern size