SocketHandlers own the poller and add themself into it only when the socket is created

We want to call socket() with the parameters provided by getaddrinfo, so we
can’t addd the fd into the poller immediately. We need to wait the
connection attempt, and then the SocketHandler can call add_socket_handler
itself, if the connection succeeds, or is in progress.

src/bridge/bridge.cpp

@@ -14,7 +14,7 @@ using namespace std::string_literals;
 
 static const char* action_prefix = "\01ACTION ";
 
-Bridge::Bridge(const std::string& user_jid, XmppComponent* xmpp, Poller* poller):
+Bridge::Bridge(const std::string& user_jid, XmppComponent* xmpp, std::shared_ptr<Poller> poller):
   user_jid(user_jid),
   xmpp(xmpp),
   poller(poller)
@@ -81,9 +81,8 @@ IrcClient* Bridge::get_irc_client(const std::string& hostname, const std::string
     }
   catch (const std::out_of_range& exception)
     {
-      this->irc_clients.emplace(hostname, std::make_shared<IrcClient>(hostname, username, this));
+      this->irc_clients.emplace(hostname, std::make_shared<IrcClient>(this->poller, hostname, username, this));
       std::shared_ptr<IrcClient> irc = this->irc_clients.at(hostname);
-      this->poller->add_socket_handler(irc);
       return irc.get();
     }
 }

src/bridge/bridge.hpp

@@ -22,7 +22,7 @@ class Poller;
 class Bridge
 {
 public:
-  explicit Bridge(const std::string& user_jid, XmppComponent* xmpp, Poller* poller);
+  explicit Bridge(const std::string& user_jid, XmppComponent* xmpp, std::shared_ptr<Poller> poller);
   ~Bridge();
   /**
    * QUIT all connected IRC servers.
@@ -146,9 +146,8 @@ private:
   /**
    * Poller, to give it the IrcClients that we spawn, to make it manage
    * their sockets.
-   * We don't own it.
    */
-  Poller* poller;
+  std::shared_ptr<Poller> poller;
 
   Bridge(const Bridge&) = delete;
   Bridge(Bridge&& other) = delete;