Clean a few more things

louloulibs/network/dns_handler.cpp

@@ -8,7 +8,6 @@
 #include <utils/timed_events.hpp>
 
 #include <algorithm>
-#include <stdexcept>
 
 DNSHandler DNSHandler::instance;
 

louloulibs/network/dns_handler.hpp

@@ -20,8 +20,9 @@ class DNSSocketHandler;
 
 class DNSHandler
 {
-public:
+private:
   DNSHandler();
+public:
   ~DNSHandler() = default;
   DNSHandler(const DNSHandler&) = delete;
   DNSHandler(DNSHandler&&) = delete;

louloulibs/network/tcp_socket_handler.hpp

@@ -204,8 +204,8 @@ protected:
   /**
    * Called when we detect a disconnection from the remote host.
    */
-  virtual void on_connection_close(const std::string& error) = 0;
-  virtual void on_connection_failed(const std::string& error) = 0;
+  virtual void on_connection_close(const std::string&) {}
+  virtual void on_connection_failed(const std::string&) {}
 
 private:
 #ifdef BOTAN_FOUND