Remove all the libs that are now in louloulibs

9 files changed, 0 insertions, 1477 deletions

diff --git a/src/network/dns_handler.cpp b/src/network/dns_handler.cpp
deleted file mode 100644
index 45bf626..0000000
--- a/src/network/dns_handler.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-#include <config.h>
-#ifdef CARES_FOUND
-
-#include <network/dns_socket_handler.hpp>
-#include <network/tcp_socket_handler.hpp>
-#include <network/dns_handler.hpp>
-#include <network/poller.hpp>
-
-#include <algorithm>
-#include <stdexcept>
-
-DNSHandler DNSHandler::instance;
-
-using namespace std::string_literals;
-
-void on_hostname4_resolved(void* arg, int status, int, struct hostent* hostent)
-{
-  TCPSocketHandler* socket_handler = static_cast<TCPSocketHandler*>(arg);
-  socket_handler->on_hostname4_resolved(status, hostent);
-}
-
-void on_hostname6_resolved(void* arg, int status, int, struct hostent* hostent)
-{
-  TCPSocketHandler* socket_handler = static_cast<TCPSocketHandler*>(arg);
-  socket_handler->on_hostname6_resolved(status, hostent);
-}
-
-DNSHandler::DNSHandler()
-{
-  int ares_error;
-  if ((ares_error = ::ares_library_init(ARES_LIB_INIT_ALL)) != 0)
-    throw std::runtime_error("Failed to initialize c-ares lib: "s + ares_strerror(ares_error));
-  if ((ares_error = ::ares_init(&this->channel)) != ARES_SUCCESS)
-    throw std::runtime_error("Failed to initialize c-ares channel: "s + ares_strerror(ares_error));
-}
-
-ares_channel& DNSHandler::get_channel()
-{
-  return this->channel;
-}
-
-void DNSHandler::destroy()
-{
-  this->socket_handlers.clear();
-  ::ares_destroy(this->channel);
-  ::ares_library_cleanup();
-}
-
-void DNSHandler::gethostbyname(const std::string& name,
-                               TCPSocketHandler* socket_handler, int family)
-{
-  socket_handler->free_cares_addrinfo();
-  if (family == AF_INET)
-    ::ares_gethostbyname(this->channel, name.data(), family,
-                         &::on_hostname4_resolved, socket_handler);
-  else
-    ::ares_gethostbyname(this->channel, name.data(), family,
-                         &::on_hostname6_resolved, socket_handler);
-}
-
-void DNSHandler::watch_dns_sockets(std::shared_ptr<Poller>& poller)
-{
-  fd_set readers;
-  fd_set writers;
-
-  FD_ZERO(&readers);
-  FD_ZERO(&writers);
-
-  int ndfs = ::ares_fds(this->channel, &readers, &writers);
-  // For each existing DNS socket, see if we are still supposed to watch it,
-  // if not then erase it
-  this->socket_handlers.erase(
-      std::remove_if(this->socket_handlers.begin(), this->socket_handlers.end(),
-                     [&readers](const auto& dns_socket)
-                     {
-                       return !FD_ISSET(dns_socket->get_socket(), &readers);
-                     }),
-      this->socket_handlers.end());
-
-  for (auto i = 0; i < ndfs; ++i)
-    {
-      bool read = FD_ISSET(i, &readers);
-      bool write = FD_ISSET(i, &writers);
-      // Look for the DNSSocketHandler with this fd
-      auto it = std::find_if(this->socket_handlers.begin(),
-                             this->socket_handlers.end(),
-                             [i](const auto& socket_handler)
-                             {
-        return i == socket_handler->get_socket();
-      });
-      if (!read && !write)      // No need to read or write to it
-        { // If found, erase it and stop watching it because it is not
-          // needed anymore
-          if (it != this->socket_handlers.end())
-            // The socket destructor removes it from the poller
-            this->socket_handlers.erase(it);
-        }
-      else            // We need to write and/or read to it
-        { // If not found, create it because we need to watch it
-          if (it == this->socket_handlers.end())
-            {
-              this->socket_handlers.emplace_front(std::make_unique<DNSSocketHandler>(poller, i));
-              it = this->socket_handlers.begin();
-            }
-          poller->add_socket_handler(it->get());
-          if (write)
-            poller->watch_send_events(it->get());
-        }
-    }
-}
-
-#endif /* CARES_FOUND */
diff --git a/src/network/dns_handler.hpp b/src/network/dns_handler.hpp
deleted file mode 100644
index ec5b2fa..0000000
--- a/src/network/dns_handler.hpp
+++ /dev/null
@@ -1,62 +0,0 @@
-#ifndef DNS_HANDLER_HPP_INCLUDED
-#define DNS_HANDLER_HPP_INCLUDED
-
-#include <config.h>
-#ifdef CARES_FOUND
-
-class TCPSocketHandler;
-class Poller;
-class DNSSocketHandler;
-
-# include <ares.h>
-# include <memory>
-# include <string>
-# include <list>
-
-void on_hostname4_resolved(void* arg, int status, int, struct hostent* hostent);
-void on_hostname6_resolved(void* arg, int status, int, struct hostent* hostent);
-
-/**
- * Class managing DNS resolution.  It should only be statically instanciated
- * once in SocketHandler.  It manages ares channel and calls various
- * functions of that library.
- */
-
-class DNSHandler
-{
-public:
-  DNSHandler();
-  ~DNSHandler() = default;
-  void gethostbyname(const std::string& name, TCPSocketHandler* socket_handler,
-                     int family);
-  /**
-   * Call ares_fds to know what fd needs to be watched by the poller, create
-   * or destroy DNSSocketHandlers depending on the result.
-   */
-  void watch_dns_sockets(std::shared_ptr<Poller>& poller);
-  /**
-   * Destroy and stop watching all the DNS sockets. Then de-init the channel
-   * and library.
-   */
-  void destroy();
-  ares_channel& get_channel();
-
-  static DNSHandler instance;
-
-private:
-  /**
-   * The list of sockets that needs to be watched, according to the last
-   * call to ares_fds.  DNSSocketHandlers are added to it or removed from it
-   * in the watch_dns_sockets() method
-   */
-  std::list<std::unique_ptr<DNSSocketHandler>> socket_handlers;
-  ares_channel channel;
-
-  DNSHandler(const DNSHandler&) = delete;
-  DNSHandler(DNSHandler&&) = delete;
-  DNSHandler& operator=(const DNSHandler&) = delete;
-  DNSHandler& operator=(DNSHandler&&) = delete;
-};
-
-#endif /* CARES_FOUND */
-#endif /* DNS_HANDLER_HPP_INCLUDED */
diff --git a/src/network/dns_socket_handler.cpp b/src/network/dns_socket_handler.cpp
deleted file mode 100644
index 6563894..0000000
--- a/src/network/dns_socket_handler.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#include <config.h>
-#ifdef CARES_FOUND
-
-#include <network/dns_socket_handler.hpp>
-#include <network/dns_handler.hpp>
-#include <network/poller.hpp>
-
-#include <ares.h>
-
-DNSSocketHandler::DNSSocketHandler(std::shared_ptr<Poller> poller,
-                                   const socket_t socket):
-  SocketHandler(poller, socket)
-{
-}
-
-DNSSocketHandler::~DNSSocketHandler()
-{
-}
-
-void DNSSocketHandler::connect()
-{
-}
-
-void DNSSocketHandler::on_recv()
-{
-  // always stop watching send and read events. We will re-watch them if the
-  // next call to ares_fds tell us to
-  this->poller->remove_socket_handler(this->socket);
-  ::ares_process_fd(DNSHandler::instance.get_channel(), this->socket, ARES_SOCKET_BAD);
-}
-
-void DNSSocketHandler::on_send()
-{
-  // always stop watching send and read events. We will re-watch them if the
-  // next call to ares_fds tell us to
-  this->poller->remove_socket_handler(this->socket);
-  ::ares_process_fd(DNSHandler::instance.get_channel(), ARES_SOCKET_BAD, this->socket);
-}
-
-bool DNSSocketHandler::is_connected() const
-{
-  return true;
-}
-
-#endif /* CARES_FOUND */
diff --git a/src/network/dns_socket_handler.hpp b/src/network/dns_socket_handler.hpp
deleted file mode 100644
index beb47d9..0000000
--- a/src/network/dns_socket_handler.hpp
+++ /dev/null
@@ -1,46 +0,0 @@
-#ifndef DNS_SOCKET_HANDLER_HPP
-# define DNS_SOCKET_HANDLER_HPP
-
-#include <config.h>
-#ifdef CARES_FOUND
-
-#include <network/socket_handler.hpp>
-#include <ares.h>
-
-/**
- * Manage a socket returned by ares_fds. We do not create, open or close the
- * socket ourself: this is done by c-ares.  We just call ares_process_fd()
- * with the correct parameters, depending on what can be done on that socket
- * (Poller reported it to be writable or readeable)
- */
-
-class DNSSocketHandler: public SocketHandler
-{
-public:
-  explicit DNSSocketHandler(std::shared_ptr<Poller> poller, const socket_t socket);
-  ~DNSSocketHandler();
-  /**
-   * Just call dns_process_fd, c-ares will do its work of send()ing or
-   * recv()ing the data it wants on that socket.
-   */
-  void on_recv() override final;
-  void on_send() override final;
-  /**
-   * Do nothing, because we are always considered to be connected, since the
-   * connection is done by c-ares and not by us.
-   */
-  void connect() override final;
-  /**
-   * Always true, see the comment for connect()
-   */
-  bool is_connected() const override final;
-
-private:
-  DNSSocketHandler(const DNSSocketHandler&) = delete;
-  DNSSocketHandler(DNSSocketHandler&&) = delete;
-  DNSSocketHandler& operator=(const DNSSocketHandler&) = delete;
-  DNSSocketHandler& operator=(DNSSocketHandler&&) = delete;
-};
-
-#endif // CARES_FOUND
-#endif // DNS_SOCKET_HANDLER_HPP
diff --git a/src/network/poller.cpp b/src/network/poller.cpp
deleted file mode 100644
index ffc4f2d..0000000
--- a/src/network/poller.cpp
+++ /dev/null
@@ -1,203 +0,0 @@
-#include <network/poller.hpp>
-#include <logger/logger.hpp>
-#include <utils/timed_events.hpp>
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-
-#include <cstring>
-#include <iostream>
-#include <stdexcept>
-
-Poller::Poller()
-{
-#if POLLER == POLL
-  this->nfds = 0;
-#elif POLLER == EPOLL
-  this->epfd = ::epoll_create1(0);
-  if (this->epfd == -1)
-    {
-      log_error("epoll failed: " << strerror(errno));
-      throw std::runtime_error("Could not create epoll instance");
-    }
-#endif
-}
-
-Poller::~Poller()
-{
-}
-
-void Poller::add_socket_handler(SocketHandler* socket_handler)
-{
-  // Don't do anything if the socket is already managed
-  const auto it = this->socket_handlers.find(socket_handler->get_socket());
-  if (it != this->socket_handlers.end())
-    return ;
-
-  this->socket_handlers.emplace(socket_handler->get_socket(), socket_handler);
-
-  // We always watch all sockets for receive events
-#if POLLER == POLL
-  this->fds[this->nfds].fd = socket_handler->get_socket();
-  this->fds[this->nfds].events = POLLIN;
-  this->nfds++;
-#endif
-#if POLLER == EPOLL
-  struct epoll_event event = {EPOLLIN, {socket_handler}};
-  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_ADD, socket_handler->get_socket(), &event);
-  if (res == -1)
-    {
-      log_error("epoll_ctl failed: " << strerror(errno));
-      throw std::runtime_error("Could not add socket to epoll");
-    }
-#endif
-}
-
-void Poller::remove_socket_handler(const socket_t socket)
-{
-  const auto it = this->socket_handlers.find(socket);
-  if (it == this->socket_handlers.end())
-    throw std::runtime_error("Trying to remove a SocketHandler that is not managed");
-  this->socket_handlers.erase(it);
-
-#if POLLER == POLL
-  for (size_t i = 0; i < this->nfds; i++)
-    {
-      if (this->fds[i].fd == socket)
-        {
-          // Move all subsequent pollfd by one on the left, erasing the
-          // value of the one we remove
-          for (size_t j = i; j < this->nfds - 1; ++j)
-            {
-              this->fds[j].fd = this->fds[j+1].fd;
-              this->fds[j].events= this->fds[j+1].events;
-            }
-          this->nfds--;
-        }
-    }
-#elif POLLER == EPOLL
-  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_DEL, socket, nullptr);
-  if (res == -1)
-    {
-      log_error("epoll_ctl failed: " << strerror(errno));
-      throw std::runtime_error("Could not remove socket from epoll");
-    }
-#endif
-}
-
-void Poller::watch_send_events(SocketHandler* socket_handler)
-{
-#if POLLER == POLL
-  for (size_t i = 0; i <= this->nfds; ++i)
-    {
-      if (this->fds[i].fd == socket_handler->get_socket())
-        {
-          this->fds[i].events = POLLIN|POLLOUT;
-          return;
-        }
-    }
-  throw std::runtime_error("Cannot watch a non-registered socket for send events");
-#elif POLLER == EPOLL
-  struct epoll_event event = {EPOLLIN|EPOLLOUT, {socket_handler}};
-  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_MOD, socket_handler->get_socket(), &event);
-  if (res == -1)
-    {
-      log_error("epoll_ctl failed: " << strerror(errno));
-      throw std::runtime_error("Could not modify socket flags in epoll");
-    }
-#endif
-}
-
-void Poller::stop_watching_send_events(SocketHandler* socket_handler)
-{
-#if POLLER == POLL
-  for (size_t i = 0; i <= this->nfds; ++i)
-    {
-      if (this->fds[i].fd == socket_handler->get_socket())
-        {
-          this->fds[i].events = POLLIN;
-          return;
-        }
-    }
-  throw std::runtime_error("Cannot watch a non-registered socket for send events");
-#elif POLLER == EPOLL
-  struct epoll_event event = {EPOLLIN, {socket_handler}};
-  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_MOD, socket_handler->get_socket(), &event);
-  if (res == -1)
-    {
-      log_error("epoll_ctl failed: " << strerror(errno));
-      throw std::runtime_error("Could not modify socket flags in epoll");
-    }
-#endif
-}
-
-int Poller::poll(const std::chrono::milliseconds& timeout)
-{
-  if (this->socket_handlers.empty() && timeout == utils::no_timeout)
-    return -1;
-#if POLLER == POLL
-  int nb_events = ::poll(this->fds, this->nfds, timeout.count());
-  if (nb_events < 0)
-    {
-      if (errno == EINTR)
-        return true;
-      log_error("poll failed: " << strerror(errno));
-      throw std::runtime_error("Poll failed");
-    }
-  // We cannot possibly have more ready events than the number of fds we are
-  // watching
-  assert(static_cast<unsigned int>(nb_events) <= this->nfds);
-  for (size_t i = 0; i <= this->nfds && nb_events != 0; ++i)
-    {
-      if (this->fds[i].revents == 0)
-        continue;
-      else if (this->fds[i].revents & POLLIN)
-        {
-          auto socket_handler = this->socket_handlers.at(this->fds[i].fd);
-          socket_handler->on_recv();
-          nb_events--;
-        }
-      else if (this->fds[i].revents & POLLOUT)
-        {
-          auto socket_handler = this->socket_handlers.at(this->fds[i].fd);
-          if (socket_handler->is_connected())
-            socket_handler->on_send();
-          else
-            socket_handler->connect();
-          nb_events--;
-        }
-    }
-  return 1;
-#elif POLLER == EPOLL
-  static const size_t max_events = 12;
-  struct epoll_event revents[max_events];
-  const int nb_events = ::epoll_wait(this->epfd, revents, max_events, timeout.count());
-  if (nb_events == -1)
-    {
-      if (errno == EINTR)
-        return 0;
-      log_error("epoll wait: " << strerror(errno));
-      throw std::runtime_error("Epoll_wait failed");
-    }
-  for (int i = 0; i < nb_events; ++i)
-    {
-      auto socket_handler = static_cast<SocketHandler*>(revents[i].data.ptr);
-      if (revents[i].events & EPOLLIN)
-        socket_handler->on_recv();
-      else if (revents[i].events & EPOLLOUT)
-        {
-          if (socket_handler->is_connected())
-            socket_handler->on_send();
-          else
-            socket_handler->connect();
-        }
-    }
-  return nb_events;
-#endif
-}
-
-size_t Poller::size() const
-{
-  return this->socket_handlers.size();
-}
diff --git a/src/network/poller.hpp b/src/network/poller.hpp
deleted file mode 100644
index c674e4c..0000000
--- a/src/network/poller.hpp
+++ /dev/null
@@ -1,95 +0,0 @@
-#ifndef POLLER_INCLUDED
-# define POLLER_INCLUDED
-
-#include <network/socket_handler.hpp>
-
-#include <unordered_map>
-#include <memory>
-#include <chrono>
-
-#define POLL 1
-#define EPOLL 2
-#define KQUEUE 3
-#include <config.h>
-#ifndef POLLER
- #define POLLER POLL
-#endif
-
-#if POLLER == POLL
- #include <poll.h>
- #define MAX_POLL_FD_NUMBER 4096
-#elif POLLER == EPOLL
-  #include <sys/epoll.h>
-#else
-  #error Invalid POLLER value
-#endif
-
-/**
- * We pass some SocketHandlers to this Poller, which uses
- * poll/epoll/kqueue/select etc to wait for events on these SocketHandlers,
- * and call the callbacks when event occurs.
- *
- * TODO: support these pollers:
- * - kqueue(2)
- */
-
-class Poller
-{
-public:
-  explicit Poller();
-  ~Poller();
-  /**
-   * Add a SocketHandler to be monitored by this Poller. All receive events
-   * are always automatically watched.
-   */
-  void add_socket_handler(SocketHandler* socket_handler);
-  /**
-   * Remove (and stop managing) a SocketHandler, designated by the given socket_t.
-   */
-  void remove_socket_handler(const socket_t socket);
-  /**
-   * Signal the poller that he needs to watch for send events for the given
-   * SocketHandler.
-   */
-  void watch_send_events(SocketHandler* socket_handler);
-  /**
-   * Signal the poller that he needs to stop watching for send events for
-   * this SocketHandler.
-   */
-  void stop_watching_send_events(SocketHandler* socket_handler);
-  /**
-   * Wait for all watched events, and call the SocketHandlers' callbacks
-   * when one is ready.  Returns if nothing happened before the provided
-   * timeout.  If the timeout is 0, it waits forever.  If there is no
-   * watched event, returns -1 immediately, ignoring the timeout value.
-   * Otherwise, returns the number of event handled. If 0 is returned this
-   * means that we were interrupted by a signal, or the timeout occured.
-   */
-  int poll(const std::chrono::milliseconds& timeout);
-  /**
-   * Returns the number of SocketHandlers managed by the poller.
-   */
-  size_t size() const;
-
-private:
-  /**
-   * A "list" of all the SocketHandlers that we manage, indexed by socket,
-   * because that's what is returned by select/poll/etc when an event
-   * occures.
-   */
-  std::unordered_map<socket_t, SocketHandler*> socket_handlers;
-
-#if POLLER == POLL
-  struct pollfd fds[MAX_POLL_FD_NUMBER];
-  nfds_t nfds;
-#elif POLLER == EPOLL
-  int epfd;
-#endif
-
-  Poller(const Poller&) = delete;
-  Poller(Poller&&) = delete;
-  Poller& operator=(const Poller&) = delete;
-  Poller& operator=(Poller&&) = delete;
-};
-
-#endif // POLLER_INCLUDED
diff --git a/src/network/socket_handler.hpp b/src/network/socket_handler.hpp
deleted file mode 100644
index 0858474..0000000
--- a/src/network/socket_handler.hpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#ifndef SOCKET_HANDLER_HPP
-# define SOCKET_HANDLER_HPP
-
-#include <config.h>
-#include <memory>
-
-class Poller;
-
-typedef int socket_t;
-
-class SocketHandler
-{
-public:
-  explicit SocketHandler(std::shared_ptr<Poller> poller, const socket_t socket):
-    poller(poller),
-    socket(socket)
-  {}
-  virtual ~SocketHandler() {}
-  virtual void on_recv() = 0;
-  virtual void on_send() = 0;
-  virtual void connect() = 0;
-  virtual bool is_connected() const = 0;
-
-  socket_t get_socket() const
-  { return this->socket; }
-
-protected:
-  /**
-   * A pointer to the poller that manages us, because we need to communicate
-   * with it.
-   */
-  std::shared_ptr<Poller> poller;
-  /**
-   * The handled socket.
-   */
-  socket_t socket;
-
-private:
-  SocketHandler(const SocketHandler&) = delete;
-  SocketHandler(SocketHandler&&) = delete;
-  SocketHandler& operator=(const SocketHandler&) = delete;
-  SocketHandler& operator=(SocketHandler&&) = delete;
-};
-
-#endif // SOCKET_HANDLER_HPP
diff --git a/src/network/tcp_socket_handler.cpp b/src/network/tcp_socket_handler.cpp
deleted file mode 100644
index e9984e3..0000000
--- a/src/network/tcp_socket_handler.cpp
+++ /dev/null
@@ -1,572 +0,0 @@
-#include <network/tcp_socket_handler.hpp>
-#include <network/dns_handler.hpp>
-
-#include <utils/timed_events.hpp>
-#include <utils/scopeguard.hpp>
-#include <network/poller.hpp>
-
-#include <logger/logger.hpp>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <stdexcept>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <netdb.h>
-#include <cstring>
-#include <fcntl.h>
-#include <stdio.h>
-
-#include <iostream>
-
-#ifdef BOTAN_FOUND
-# include <botan/hex.h>
-
-Botan::AutoSeeded_RNG TCPSocketHandler::rng;
-Permissive_Credentials_Manager TCPSocketHandler::credential_manager;
-Botan::TLS::Policy TCPSocketHandler::policy;
-Botan::TLS::Session_Manager_In_Memory TCPSocketHandler::session_manager(TCPSocketHandler::rng);
-
-#endif
-
-#ifndef UIO_FASTIOV
-# define UIO_FASTIOV 8
-#endif
-
-using namespace std::string_literals;
-using namespace std::chrono_literals;
-
-namespace ph = std::placeholders;
-
-TCPSocketHandler::TCPSocketHandler(std::shared_ptr<Poller> poller):
-  SocketHandler(poller, -1),
-  use_tls(false),
-  connected(false),
-  connecting(false)
-#ifdef CARES_FOUND
-  ,resolved(false),
-  resolved4(false),
-  resolved6(false),
-  cares_addrinfo(nullptr),
-  cares_error()
-#endif
-{}
-
-TCPSocketHandler::~TCPSocketHandler()
-{
-#ifdef CARES_FOUND
-  this->free_cares_addrinfo();
-#endif
-}
-
-void TCPSocketHandler::init_socket(const struct addrinfo* rp)
-{
-  if ((this->socket = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol)) == -1)
-    throw std::runtime_error("Could not create socket: "s + strerror(errno));
-  int optval = 1;
-  if (::setsockopt(this->socket, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1)
-    log_warning("Failed to enable TCP keepalive on socket: " << strerror(errno));
-  // Set the socket on non-blocking mode.  This is useful to receive a EAGAIN
-  // error when connect() would block, to not block the whole process if a
-  // remote is not responsive.
-  const int existing_flags = ::fcntl(this->socket, F_GETFL, 0);
-  if ((existing_flags == -1) ||
-      (::fcntl(this->socket, F_SETFL, existing_flags | O_NONBLOCK) == -1))
-    throw std::runtime_error("Could not initialize socket: "s + strerror(errno));
-}
-
-void TCPSocketHandler::connect(const std::string& address, const std::string& port, const bool tls)
-{
-  this->address = address;
-  this->port = port;
-  this->use_tls = tls;
-
-  utils::ScopeGuard sg;
-
-  struct addrinfo* addr_res;
-
-  if (!this->connecting)
-    {
-      // Get the addrinfo from getaddrinfo (or ares_gethostbyname), only if
-      // this is the first call of this function.
-#ifdef CARES_FOUND
-      if (!this->resolved)
-        {
-          log_info("Trying to connect to " << address << ":" << port);
-          // Start the asynchronous process of resolving the hostname. Once
-          // the addresses have been found and `resolved` has been set to true
-          // (but connecting will still be false), TCPSocketHandler::connect()
-          // needs to be called, again.
-          DNSHandler::instance.gethostbyname(address, this, AF_INET6);
-          DNSHandler::instance.gethostbyname(address, this, AF_INET);
-          return;
-        }
-      else
-        {
-          // The c-ares resolved the hostname and the available addresses
-          // where saved in the cares_addrinfo linked list. Now, just use
-          // this list to try to connect.
-          addr_res = this->cares_addrinfo;
-          if (!addr_res)
-            {
-              this->close();
-              this->on_connection_failed(this->cares_error);
-              return ;
-            }
-        }
-#else
-      log_info("Trying to connect to " << address << ":" << port);
-      struct addrinfo hints;
-      memset(&hints, 0, sizeof(struct addrinfo));
-      hints.ai_flags = 0;
-      hints.ai_family = AF_UNSPEC;
-      hints.ai_socktype = SOCK_STREAM;
-      hints.ai_protocol = 0;
-
-      const int res = ::getaddrinfo(address.c_str(), port.c_str(), &hints, &addr_res);
-
-      if (res != 0)
-        {
-          log_warning("getaddrinfo failed: "s + gai_strerror(res));
-          this->close();
-          this->on_connection_failed(gai_strerror(res));
-          return ;
-        }
-      // Make sure the alloced structure is always freed at the end of the
-      // function
-      sg.add_callback([&addr_res](){ freeaddrinfo(addr_res); });
-#endif
-    }
-  else
-    { // This function is called again, use the saved addrinfo structure,
-      // instead of re-doing the whole getaddrinfo process.
-      addr_res = &this->addrinfo;
-    }
-
-  for (struct addrinfo* rp = addr_res; rp; rp = rp->ai_next)
-    {
-      if (!this->connecting)
-        {
-          try {
-            this->init_socket(rp);
-          }
-          catch (const std::runtime_error& error) {
-            log_error("Failed to init socket: " << error.what());
-            break;
-          }
-        }
-      if (::connect(this->socket, rp->ai_addr, rp->ai_addrlen) == 0
-          || errno == EISCONN)
-        {
-          log_info("Connection success.");
-          TimedEventsManager::instance().cancel("connection_timeout"s +
-                                                std::to_string(this->socket));
-          this->poller->add_socket_handler(this);
-          this->connected = true;
-          this->connecting = false;
-#ifdef BOTAN_FOUND
-          if (this->use_tls)
-            this->start_tls();
-#endif
-          this->on_connected();
-          return ;
-        }
-      else if (errno == EINPROGRESS || errno == EALREADY)
-        {   // retry this process later, when the socket
-            // is ready to be written on.
-          this->connecting = true;
-          this->poller->add_socket_handler(this);
-          this->poller->watch_send_events(this);
-          // Save the addrinfo structure, to use it on the next call
-          this->ai_addrlen = rp->ai_addrlen;
-          memcpy(&this->ai_addr, rp->ai_addr, this->ai_addrlen);
-          memcpy(&this->addrinfo, rp, sizeof(struct addrinfo));
-          this->addrinfo.ai_addr = reinterpret_cast<struct sockaddr*>(&this->ai_addr);
-          this->addrinfo.ai_next = nullptr;
-          // If the connection has not succeeded or failed in 5s, we consider
-          // it to have failed
-          TimedEventsManager::instance().add_event(
-                                                   TimedEvent(std::chrono::steady_clock::now() + 5s,
-                                                              std::bind(&TCPSocketHandler::on_connection_timeout, this),
-                                                              "connection_timeout"s + std::to_string(this->socket)));
-          return ;
-        }
-      log_info("Connection failed:" << strerror(errno));
-    }
-  log_error("All connection attempts failed.");
-  this->close();
-  this->on_connection_failed(strerror(errno));
-  return ;
-}
-
-void TCPSocketHandler::on_connection_timeout()
-{
-  this->close();
-  this->on_connection_failed("connection timed out");
-}
-
-void TCPSocketHandler::connect()
-{
-  this->connect(this->address, this->port, this->use_tls);
-}
-
-void TCPSocketHandler::on_recv()
-{
-#ifdef BOTAN_FOUND
-  if (this->use_tls)
-    this->tls_recv();
-  else
-#endif
-    this->plain_recv();
-}
-
-void TCPSocketHandler::plain_recv()
-{
-  static constexpr size_t buf_size = 4096;
-  char buf[buf_size];
-  void* recv_buf = this->get_receive_buffer(buf_size);
-
-  if (recv_buf == nullptr)
-    recv_buf = buf;
-
-  const ssize_t size = this->do_recv(recv_buf, buf_size);
-
-  if (size > 0)
-    {
-      if (buf == recv_buf)
-        {
-          // data needs to be placed in the in_buf string, because no buffer
-          // was provided to receive that data directly. The in_buf buffer
-          // will be handled in parse_in_buffer()
-          this->in_buf += std::string(buf, size);
-        }
-      this->parse_in_buffer(size);
-    }
-}
-
-ssize_t TCPSocketHandler::do_recv(void* recv_buf, const size_t buf_size)
-{
-  ssize_t size = ::recv(this->socket, recv_buf, buf_size, 0);
-  if (0 == size)
-    {
-      this->on_connection_close("");
-      this->close();
-    }
-  else if (-1 == size)
-    {
-      log_warning("Error while reading from socket: " << strerror(errno));
-      // Remember if we were connecting, or already connected when this
-      // happened, because close() sets this->connecting to false
-      const auto were_connecting = this->connecting;
-      this->close();
-      if (were_connecting)
-        this->on_connection_failed(strerror(errno));
-      else
-        this->on_connection_close(strerror(errno));
-    }
-  return size;
-}
-
-void TCPSocketHandler::on_send()
-{
-  struct iovec msg_iov[UIO_FASTIOV] = {};
-  struct msghdr msg{nullptr, 0,
-      msg_iov,
-      0, nullptr, 0, 0};
-  for (std::string& s: this->out_buf)
-    {
-      // unconsting the content of s is ok, sendmsg will never modify it
-      msg_iov[msg.msg_iovlen].iov_base = const_cast<char*>(s.data());
-      msg_iov[msg.msg_iovlen].iov_len = s.size();
-      if (++msg.msg_iovlen == UIO_FASTIOV)
-        break;
-    }
-  ssize_t res = ::sendmsg(this->socket, &msg, MSG_NOSIGNAL);
-  if (res < 0)
-    {
-      log_error("sendmsg failed: " << strerror(errno));
-      this->on_connection_close(strerror(errno));
-      this->close();
-    }
-  else
-    {
-      // remove all the strings that were successfully sent.
-      for (auto it = this->out_buf.begin();
-           it != this->out_buf.end();)
-        {
-          if (static_cast<size_t>(res) >= (*it).size())
-            {
-              res -= (*it).size();
-              it = this->out_buf.erase(it);
-            }
-          else
-            {
-              // If one string has partially been sent, we use substr to
-              // crop it
-              if (res > 0)
-                (*it) = (*it).substr(res, std::string::npos);
-              break;
-            }
-        }
-      if (this->out_buf.empty())
-        this->poller->stop_watching_send_events(this);
-    }
-}
-
-void TCPSocketHandler::close()
-{
-  TimedEventsManager::instance().cancel("connection_timeout"s +
-                                        std::to_string(this->socket));
-  if (this->connected || this->connecting)
-    this->poller->remove_socket_handler(this->get_socket());
-  if (this->socket != -1)
-    {
-      ::close(this->socket);
-      this->socket = -1;
-    }
-  this->connected = false;
-  this->connecting = false;
-  this->in_buf.clear();
-  this->out_buf.clear();
-  this->port.clear();
-}
-
-void TCPSocketHandler::send_data(std::string&& data)
-{
-#ifdef BOTAN_FOUND
-  if (this->use_tls)
-    this->tls_send(std::move(data));
-  else
-#endif
-    this->raw_send(std::move(data));
-}
-
-void TCPSocketHandler::raw_send(std::string&& data)
-{
-  if (data.empty())
-    return ;
-  this->out_buf.emplace_back(std::move(data));
-  if (this->connected)
-    this->poller->watch_send_events(this);
-}
-
-void TCPSocketHandler::send_pending_data()
-{
-  if (this->connected && !this->out_buf.empty())
-    this->poller->watch_send_events(this);
-}
-
-bool TCPSocketHandler::is_connected() const
-{
-  return this->connected;
-}
-
-bool TCPSocketHandler::is_connecting() const
-{
-#ifdef CARES_FOUND
-  return this->connecting || !this->resolved;
-#else
-  return this->connecting;
-#endif
-}
-
-void* TCPSocketHandler::get_receive_buffer(const size_t) const
-{
-  return nullptr;
-}
-
-#ifdef BOTAN_FOUND
-void TCPSocketHandler::start_tls()
-{
-  Botan::TLS::Server_Information server_info(this->address, "irc", std::stoul(this->port));
-  this->tls = std::make_unique<Botan::TLS::Client>(
-      std::bind(&TCPSocketHandler::tls_output_fn, this, ph::_1, ph::_2),
-      std::bind(&TCPSocketHandler::tls_data_cb, this, ph::_1, ph::_2),
-      std::bind(&TCPSocketHandler::tls_alert_cb, this, ph::_1, ph::_2, ph::_3),
-      std::bind(&TCPSocketHandler::tls_handshake_cb, this, ph::_1),
-      session_manager, credential_manager, policy,
-      rng, server_info, Botan::TLS::Protocol_Version::latest_tls_version());
-}
-
-void TCPSocketHandler::tls_recv()
-{
-  static constexpr size_t buf_size = 4096;
-  char recv_buf[buf_size];
-
-  const ssize_t size = this->do_recv(recv_buf, buf_size);
-  if (size > 0)
-    {
-      const bool was_active = this->tls->is_active();
-      this->tls->received_data(reinterpret_cast<const Botan::byte*>(recv_buf),
-                              static_cast<size_t>(size));
-      if (!was_active && this->tls->is_active())
-        this->on_tls_activated();
-    }
-}
-
-void TCPSocketHandler::tls_send(std::string&& data)
-{
-  if (this->tls->is_active())
-    {
-      const bool was_active = this->tls->is_active();
-      if (!this->pre_buf.empty())
-        {
-          this->tls->send(reinterpret_cast<const Botan::byte*>(this->pre_buf.data()),
-                         this->pre_buf.size());
-          this->pre_buf = "";
-        }
-      if (!data.empty())
-        this->tls->send(reinterpret_cast<const Botan::byte*>(data.data()),
-                       data.size());
-      if (!was_active && this->tls->is_active())
-        this->on_tls_activated();
-    }
-  else
-    this->pre_buf += data;
-}
-
-void TCPSocketHandler::tls_data_cb(const Botan::byte* data, size_t size)
-{
-  this->in_buf += std::string(reinterpret_cast<const char*>(data),
-                              size);
-  if (!this->in_buf.empty())
-    this->parse_in_buffer(size);
-}
-
-void TCPSocketHandler::tls_output_fn(const Botan::byte* data, size_t size)
-{
-  this->raw_send(std::string(reinterpret_cast<const char*>(data), size));
-}
-
-void TCPSocketHandler::tls_alert_cb(Botan::TLS::Alert alert, const Botan::byte*, size_t)
-{
-  log_debug("tls_alert: " << alert.type_string());
-}
-
-bool TCPSocketHandler::tls_handshake_cb(const Botan::TLS::Session& session)
-{
-  log_debug("Handshake with " << session.server_info().hostname() << " complete."
-            << " Version: " << session.version().to_string()
-            << " using " << session.ciphersuite().to_string());
-  if (!session.session_id().empty())
-    log_debug("Session ID " << Botan::hex_encode(session.session_id()));
-  if (!session.session_ticket().empty())
-    log_debug("Session ticket " << Botan::hex_encode(session.session_ticket()));
-  return true;
-}
-
-void TCPSocketHandler::on_tls_activated()
-{
-  this->send_data("");
-}
-
-#endif // BOTAN_FOUND
-
-#ifdef CARES_FOUND
-
-void TCPSocketHandler::on_hostname4_resolved(int status, struct hostent* hostent)
-{
-  this->resolved4 = true;
-  if (status == ARES_SUCCESS)
-    this->fill_ares_addrinfo4(hostent);
-  else
-    this->cares_error = ::ares_strerror(status);
-
-  if (this->resolved4 && this->resolved6)
-    {
-      this->resolved = true;
-      this->connect();
-    }
-}
-
-void TCPSocketHandler::on_hostname6_resolved(int status, struct hostent* hostent)
-{
-  this->resolved6 = true;
-  if (status == ARES_SUCCESS)
-    this->fill_ares_addrinfo6(hostent);
-  else
-    this->cares_error = ::ares_strerror(status);
-
-  if (this->resolved4 && this->resolved6)
-    {
-      this->resolved = true;
-      this->connect();
-    }
-}
-
-void TCPSocketHandler::fill_ares_addrinfo4(const struct hostent* hostent)
-{
-  struct addrinfo* prev = this->cares_addrinfo;
-  struct in_addr** address = reinterpret_cast<struct in_addr**>(hostent->h_addr_list);
-
-  while (*address)
-    {
-       // Create a new addrinfo list element, and fill it
-      struct addrinfo* current = new struct addrinfo;
-      current->ai_flags = 0;
-      current->ai_family = hostent->h_addrtype;
-      current->ai_socktype = SOCK_STREAM;
-      current->ai_protocol = 0;
-      current->ai_addrlen = sizeof(struct sockaddr_in);
-
-      struct sockaddr_in* addr = new struct sockaddr_in;
-      addr->sin_family = hostent->h_addrtype;
-      addr->sin_port = htons(strtoul(this->port.data(), nullptr, 10));
-      addr->sin_addr.s_addr = (*address)->s_addr;
-
-      current->ai_addr = reinterpret_cast<struct sockaddr*>(addr);
-      current->ai_next = nullptr;
-      current->ai_canonname = nullptr;
-
-      current->ai_next = prev;
-      this->cares_addrinfo = current;
-      prev = current;
-      ++address;
-    }
-}
-
-void TCPSocketHandler::fill_ares_addrinfo6(const struct hostent* hostent)
-{
-  struct addrinfo* prev = this->cares_addrinfo;
-  struct in6_addr** address = reinterpret_cast<struct in6_addr**>(hostent->h_addr_list);
-
-  while (*address)
-    {
-       // Create a new addrinfo list element, and fill it
-      struct addrinfo* current = new struct addrinfo;
-      current->ai_flags = 0;
-      current->ai_family = hostent->h_addrtype;
-      current->ai_socktype = SOCK_STREAM;
-      current->ai_protocol = 0;
-      current->ai_addrlen = sizeof(struct sockaddr_in6);
-
-      struct sockaddr_in6* addr = new struct sockaddr_in6;
-      addr->sin6_family = hostent->h_addrtype;
-      addr->sin6_port = htons(strtoul(this->port.data(), nullptr, 10));
-      ::memcpy(addr->sin6_addr.s6_addr, (*address)->s6_addr, 16);
-      addr->sin6_flowinfo = 0;
-      addr->sin6_scope_id = 0;
-
-      current->ai_addr = reinterpret_cast<struct sockaddr*>(addr);
-      current->ai_next = nullptr;
-      current->ai_canonname = nullptr;
-
-      current->ai_next = prev;
-      this->cares_addrinfo = current;
-      prev = current;
-      ++address;
-    }
-}
-
-void TCPSocketHandler::free_cares_addrinfo()
-{
-  while (this->cares_addrinfo)
-    {
-      delete this->cares_addrinfo->ai_addr;
-      auto next = this->cares_addrinfo->ai_next;
-      delete this->cares_addrinfo;
-      this->cares_addrinfo = next;
-    }
-}
-
-#endif  // CARES_FOUND
diff --git a/src/network/tcp_socket_handler.hpp b/src/network/tcp_socket_handler.hpp
deleted file mode 100644
index 7f10cff..0000000
--- a/src/network/tcp_socket_handler.hpp
+++ /dev/null
@@ -1,297 +0,0 @@
-#ifndef SOCKET_HANDLER_INCLUDED
-# define SOCKET_HANDLER_INCLUDED
-
-#include <network/socket_handler.hpp>
-
-#include <logger/logger.hpp>
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netdb.h>
-
-#include <utility>
-#include <memory>
-#include <string>
-#include <list>
-
-#include "config.h"
-
-#ifdef CARES_FOUND
-# include <ares.h>
-#endif
-
-#ifdef BOTAN_FOUND
-# include <botan/botan.h>
-# include <botan/tls_client.h>
-
-/**
- * A very simple credential manager that accepts any certificate.
- */
-class Permissive_Credentials_Manager: public Botan::Credentials_Manager
-{
-public:
-  void verify_certificate_chain(const std::string& type, const std::string& purported_hostname, const std::vector<Botan::X509_Certificate>&)
-  { // TODO: Offer the admin to disallow connection on untrusted
-    // certificates
-    log_debug("Checking remote certificate (" << type << ") for hostname " << purported_hostname);
-  }
-};
-#endif // BOTAN_FOUND
-
-/**
- * An interface, with a series of callbacks that should be implemented in
- * subclasses that deal with a socket. These callbacks are called on various events
- * (read/write/timeout, etc) when they are notified to a poller
- * (select/poll/epoll etc)
- */
-class TCPSocketHandler: public SocketHandler
-{
-protected:
-  ~TCPSocketHandler();
-
-public:
-  explicit TCPSocketHandler(std::shared_ptr<Poller> poller);
-  /**
-   * 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;
-  /**
-   * Reads raw data from the socket. And pass it to parse_in_buffer()
-   * If we are using TLS on this connection, we call tls_recv()
-   */
-  void on_recv() override final;
-  /**
-   * Write as much data from out_buf as possible, in the socket.
-   */
-  void on_send() override final;
-  /**
-   * Add the given data to out_buf and tell our poller that we want to be
-   * notified when a send event is ready.
-   *
-   * This can be overriden if we want to modify the data before sending
-   * it. For example if we want to encrypt it.
-   */
-  void send_data(std::string&& data);
-  /**
-   * Watch the socket for send events, if our out buffer is not empty.
-   */
-  void send_pending_data();
-  /**
-   * Close the connection, remove us from the poller
-   */
-  void close();
-  /**
-   * 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;
-  /**
-   * Called when the connection fails. Not when it is closed later, just at
-   * the connect() call.
-   */
-  virtual void on_connection_failed(const std::string& reason) = 0;
-  /**
-   * Called when we detect a disconnection from the remote host.
-   */
-  virtual void on_connection_close(const std::string& error) = 0;
-  /**
-   * Handle/consume (some of) the data received so far.  The data to handle
-   * may be in the in_buf buffer, or somewhere else, depending on what
-   * get_receive_buffer() returned.  If some data is used from in_buf, it
-   * should be truncated, only the unused data should be left untouched.
-   *
-   * The size argument is the size of the last chunk of data that was added to the buffer.
-   */
-  virtual void parse_in_buffer(const size_t size) = 0;
-  bool is_connected() const override final;
-  bool is_connecting() const;
-
-#ifdef CARES_FOUND
-  void on_hostname4_resolved(int status, struct hostent* hostent);
-  void on_hostname6_resolved(int status, struct hostent* hostent);
-
-  void free_cares_addrinfo();
-
-  void fill_ares_addrinfo4(const struct hostent* hostent);
-  void fill_ares_addrinfo6(const struct hostent* hostent);
-#endif
-
-private:
-  /**
-   * Initialize the socket with the parameters contained in the given
-   * addrinfo structure.
-   */
-  void init_socket(const struct addrinfo* rp);
-  /**
-   * Reads from the socket into the provided buffer.  If an error occurs
-   * (read returns <= 0), the handling of the error is done here (close the
-   * connection, log a message, etc).
-   *
-   * Returns the value returned by ::recv(), so the buffer should not be
-   * used if it’s not positive.
-   */
-  ssize_t do_recv(void* recv_buf, const size_t buf_size);
-  /**
-   * Reads data from the socket and calls parse_in_buffer with it.
-   */
-  void plain_recv();
-  /**
-   * Mark the given data as ready to be sent, as-is, on the socket, as soon
-   * as we can.
-   */
-  void raw_send(std::string&& data);
-
-#ifdef BOTAN_FOUND
-  /**
-   * Create the TLS::Client object, with all the callbacks etc. This must be
-   * called only when we know we are able to send TLS-encrypted data over
-   * the socket.
-   */
-  void start_tls();
-  /**
-   * An additional step to pass the data into our tls object to decrypt it
-   * before passing it to parse_in_buffer.
-   */
-  void tls_recv();
-  /**
-   * Pass the data to the tls object in order to encrypt it. The tls object
-   * will then call raw_send as a callback whenever data as been encrypted
-   * and can be sent on the socket.
-   */
-  void tls_send(std::string&& data);
-  /**
-   * Called by the tls object that some data has been decrypt. We call
-   * parse_in_buffer() to handle that unencrypted data.
-   */
-  void tls_data_cb(const Botan::byte* data, size_t size);
-  /**
-   * Called by the tls object to indicate that some data has been encrypted
-   * and is now ready to be sent on the socket as is.
-   */
-  void tls_output_fn(const Botan::byte* data, size_t size);
-  /**
-   * Called by the tls object to indicate that a TLS alert has been
-   * received. We don’t use it, we just log some message, at the moment.
-   */
-  void tls_alert_cb(Botan::TLS::Alert alert, const Botan::byte*, size_t);
-  /**
-   * Called by the tls object at the end of the TLS handshake. We don't do
-   * anything here appart from logging the TLS session information.
-   */
-  bool tls_handshake_cb(const Botan::TLS::Session& session);
-  /**
-   * Called whenever the tls session goes from inactive to active. This
-   * means that the handshake has just been successfully done, and we can
-   * now proceed to send any available data into our tls object.
-   */
-  void on_tls_activated();
-#endif // BOTAN_FOUND
-  /**
-   * Where data is added, when we want to send something to the client.
-   */
-  std::list<std::string> out_buf;
-  /**
-   * Keep the details of the addrinfo 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;
-
-protected:
-  /**
-   * Where data read from the socket is added until we can extract a full
-   * and meaningful “message” from it.
-   *
-   * TODO: something more efficient than a string.
-   */
-  std::string in_buf;
-  /**
-   * Whether we are using TLS on this connection or not.
-   */
-  bool use_tls;
-  /**
-   * Provide a buffer in which data can be directly received. This can be
-   * used to avoid copying data into in_buf before using it. If no buffer
-   * needs to be provided, nullptr is returned (the default implementation
-   * does that), in that case our internal in_buf will be used to save the
-   * data until it can be used by parse_in_buffer().
-   */
-  virtual void* get_receive_buffer(const size_t size) const;
-  /**
-   * Hostname we are connected/connecting to
-   */
-  std::string address;
-  /**
-   * Port we are connected/connecting to
-   */
-  std::string port;
-
-  bool connected;
-  bool connecting;
-
-#ifdef CARES_FOUND
-  /**
-   * Whether or not the DNS resolution was successfully done
-   */
-  bool resolved;
-  bool resolved4;
-  bool resolved6;
-  /**
-   * When using c-ares to resolve the host asynchronously, we need the
-   * c-ares callback to fill a structure (a struct addrinfo, for
-   * compatibility with getaddrinfo and the rest of the code that works when
-   * c-ares is not used) with all returned values (for example an IPv6 and
-   * an IPv4). The next call of connect() will then try all these values
-   * (exactly like we do with the result of getaddrinfo) and save the one
-   * that worked (or returned EINPROGRESS) in the other struct addrinfo (see
-   * the members addrinfo, ai_addrlen, and ai_addr).
-   */
-  struct addrinfo* cares_addrinfo;
-  std::string cares_error;
-#endif  // CARES_FOUND
-
-private:
-  TCPSocketHandler(const TCPSocketHandler&) = delete;
-  TCPSocketHandler(TCPSocketHandler&&) = delete;
-  TCPSocketHandler& operator=(const TCPSocketHandler&) = delete;
-  TCPSocketHandler& operator=(TCPSocketHandler&&) = delete;
-
-#ifdef BOTAN_FOUND
-  /**
-   * Botan stuff to manipulate a TLS session.
-   */
-  static Botan::AutoSeeded_RNG rng;
-  static Permissive_Credentials_Manager credential_manager;
-  static Botan::TLS::Policy policy;
-  static Botan::TLS::Session_Manager_In_Memory session_manager;
-  /**
-   * We use a unique_ptr because we may not want to create the object at
-   * all. The Botan::TLS::Client object generates a handshake message as
-   * soon and calls the output_fn callback with it as soon as it is
-   * created. Therefore, we do not want to create it if do not intend to do
-   * send any TLS-encrypted message. We create the object only when needed
-   * (for example after we have negociated a TLS session using a STARTTLS
-   * message, or stuf like that).
-   *
-   * See start_tls for the method where this object is created.
-   */
-  std::unique_ptr<Botan::TLS::Client> tls;
-  /**
-   * An additional buffer to keep data that the user wants to send, but
-   * cannot because the handshake is not done.
-   */
-  std::string pre_buf;
-#endif // BOTAN_FOUND
-};
-
-#endif // SOCKET_HANDLER_INCLUDED