Refactoring louloulibs and cmake

Use OBJECT libraries
Remove the louloulibs directory
Write FOUND variables in the cache

src/network/tcp_client_socket_handler.hpp

@@ -0,0 +1,82 @@
+#pragma once
+
+#include <network/tcp_socket_handler.hpp>
+
+class TCPClientSocketHandler: public TCPSocketHandler
+{
+ public:
+  TCPClientSocketHandler(std::shared_ptr<Poller>& poller);
+  ~TCPClientSocketHandler();
+  /**
+   * Connect to the remote server, and call on_connected() if this
+   * succeeds. If tls is true, we set use_tls to true and will also call
+   * start_tls() when the connection succeeds.
+   */
+  void connect(const std::string& address, const std::string& port, const bool tls);
+  void connect() override final;
+  /**
+   * Called by a TimedEvent, when the connection did not succeed or fail
+   * after a given time.
+   */
+  void on_connection_timeout();
+  /**
+   * Called when the connection is successful.
+   */
+  virtual void on_connected() = 0;
+  bool is_connected() const override;
+  bool is_connecting() const override;
+
+  std::string get_port() const;
+
+  void close() override final;
+  std::chrono::system_clock::time_point connection_date;
+
+  /**
+   * Whether or not this connection is using the two given TCP ports.
+   */
+  bool match_port_pairt(const uint16_t local, const uint16_t remote) const;
+
+ protected:
+  bool hostname_resolution_failed;
+  /**
+   * Address to bind the socket to, before calling connect().
+   * If empty, it’s equivalent to binding to INADDR_ANY.
+   */
+  std::string bind_addr;
+  /**
+   * Display the resolved IP, just for information purpose.
+   */
+  void display_resolved_ip(struct addrinfo* rp) const;
+ private:
+  /**
+   * Initialize the socket with the parameters contained in the given
+   * addrinfo structure.
+   */
+  void init_socket(const struct addrinfo* rp);
+  /**
+   * DNS resolver
+   */
+  Resolver resolver;
+  /**
+   * Keep the details of the addrinfo returned by the resolver that
+   * triggered a EINPROGRESS error when connect()ing to it, to reuse it
+   * directly when connect() is called again.
+   */
+  struct addrinfo addrinfo{};
+  struct sockaddr_in6 ai_addr{};
+  socklen_t ai_addrlen{};
+
+  /**
+   * Hostname we are connected/connecting to
+   */
+  std::string address;
+  /**
+   * Port we are connected/connecting to
+   */
+  std::string port;
+
+  uint16_t local_port{};
+
+  bool connected;
+  bool connecting;
+};