ZMQII-28: Bidirectional introduction on TCP connection establishment

src/zmq_init.hpp

@@ -0,0 +1,89 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_ZMQ_INIT_HPP_INCLUDED__
+#define __ZMQ_ZMQ_INIT_HPP_INCLUDED__
+
+#include <string>
+
+#include "i_inout.hpp"
+#include "i_engine.hpp"
+#include "owned.hpp"
+#include "fd.hpp"
+#include "stdint.hpp"
+#include "options.hpp"
+#include "stdint.hpp"
+
+namespace zmq
+{
+
+    //  The class handles initialisation phase of 0MQ wire-level protocol.
+
+    class zmq_init_t : public owned_t, public i_inout
+    {
+    public:
+
+        zmq_init_t (class io_thread_t *parent_, socket_base_t *owner_,
+            fd_t fd_, const options_t &options_, bool reconnect_,
+            const char *address_, uint64_t session_ordinal_);
+        ~zmq_init_t ();
+
+    private:
+
+        void finalise ();
+
+        //  i_inout interface implementation.
+        bool read (::zmq_msg_t *msg_);
+        bool write (::zmq_msg_t *msg_);
+        void flush ();
+        void detach (owned_t *reconnecter_);
+        class io_thread_t *get_io_thread ();
+        class socket_base_t *get_owner ();
+        uint64_t get_ordinal ();
+
+        //  Handlers for incoming commands.
+        void process_plug ();
+        void process_unplug ();
+
+        //  Associated wite-protocol engine.
+        i_engine *engine;
+
+        //  True if our own identity was already sent to the peer.
+        bool sent;
+
+        //  True if peer's identity was already received.
+        bool received;
+
+        //  Identity of the peer socket.
+        std::string peer_identity;
+
+        //  TCP connecter creates session before the name of the peer is known.
+        //  Thus we know only its ordinal number.
+        uint64_t session_ordinal;
+
+        //  Associated socket options.
+        options_t options;
+
+        zmq_init_t (const zmq_init_t&);
+        void operator = (const zmq_init_t&);
+    };
+
+}
+
+#endif