Problem: duplication across ipc_listener_t, tcp_listener_t, tipc_listener_t

Solution: extract common base class stream_listener_base_t

src/tipc_listener.hpp

@@ -37,23 +37,17 @@
 #include <string>
 
 #include "fd.hpp"
-#include "own.hpp"
-#include "stdint.hpp"
-#include "io_object.hpp"
+#include "stream_listener_base.hpp"
 #include "tipc_address.hpp"
 
 namespace zmq
 {
-class io_thread_t;
-class socket_base_t;
-
-class tipc_listener_t : public own_t, public io_object_t
+class tipc_listener_t : public stream_listener_base_t
 {
   public:
     tipc_listener_t (zmq::io_thread_t *io_thread_,
                      zmq::socket_base_t *socket_,
                      const options_t &options_);
-    ~tipc_listener_t ();
 
     //  Set address to listen on.
     int set_address (const char *addr_);
@@ -62,16 +56,9 @@ class tipc_listener_t : public own_t, public io_object_t
     int get_address (std::string &addr_);
 
   private:
-    //  Handlers for incoming commands.
-    void process_plug ();
-    void process_term (int linger_);
-
     //  Handlers for I/O events.
     void in_event ();
 
-    //  Close the listening socket.
-    void close ();
-
     //  Accept the new connection. Returns the file descriptor of the
     //  newly created connection. The function may return retired_fd
     //  if the connection was dropped while waiting in the listen backlog.
@@ -80,18 +67,6 @@ class tipc_listener_t : public own_t, public io_object_t
     // Address to listen on
     tipc_address_t _address;
 
-    //  Underlying socket.
-    fd_t _s;
-
-    //  Handle corresponding to the listening socket.
-    handle_t _handle;
-
-    //  Socket the listener belongs to.
-    zmq::socket_base_t *_socket;
-
-    // String representation of endpoint to bind to
-    std::string _endpoint;
-
     tipc_listener_t (const tipc_listener_t &);
     const tipc_listener_t &operator= (const tipc_listener_t &);
 };