Implementations of TCP and IPC transports separated

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/ipc_connecter.hpp

@@ -0,0 +1,112 @@
+/*
+    Copyright (c) 2007-2011 iMatix Corporation
+    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser 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
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __IPC_CONNECTER_HPP_INCLUDED__
+#define __IPC_CONNECTER_HPP_INCLUDED__
+
+#include "fd.hpp"
+#include "ip.hpp"
+#include "own.hpp"
+#include "io_object.hpp"
+#include "stdint.hpp"
+
+namespace zmq
+{
+
+    class ipc_connecter_t : public own_t, public io_object_t
+    {
+    public:
+
+        //  If 'delay' is true connecter first waits for a while, then starts
+        //  connection process.
+        ipc_connecter_t (class io_thread_t *io_thread_,
+            class session_t *session_, const options_t &options_,
+            const char *address_, bool delay_);
+        ~ipc_connecter_t ();
+
+    private:
+
+        //  ID of the timer used to delay the reconnection.
+        enum {reconnect_timer_id = 1};
+
+        //  Handlers for incoming commands.
+        void process_plug ();
+
+        //  Handlers for I/O events.
+        void in_event ();
+        void out_event ();
+        void timer_event (int id_);
+
+        //  Internal function to start the actual connection establishment.
+        void start_connecting ();
+
+        //  Internal function to add a reconnect timer
+        void add_reconnect_timer();
+
+        //  Internal function to return a reconnect backoff delay.
+        //  Will modify the current_reconnect_ivl used for next call
+        //  Returns the currently used interval
+        int get_new_reconnect_ivl ();
+
+        //  Set address to connect to.
+        int set_address (const char *addr_);
+
+        //  Open TCP connecting socket. Returns -1 in case of error,
+        //  0 if connect was successfull immediately and 1 if async connect
+        //  was launched.
+        int open ();
+
+        //  Close the connecting socket.
+        int close ();
+
+        //  Get the file descriptor of newly created connection. Returns
+        //  retired_fd if the connection was unsuccessfull.
+        fd_t connect ();
+
+        //  Address to connect to.
+        sockaddr_storage addr;
+        socklen_t addr_len;
+
+        //  Underlying socket.
+        fd_t s;
+
+        //  Handle corresponding to the listening socket.
+        handle_t handle;
+
+        //  If true file descriptor is registered with the poller and 'handle'
+        //  contains valid value.
+        bool handle_valid;
+
+        //  If true, connecter is waiting a while before trying to connect.
+        bool wait;
+
+        //  Reference to the session we belong to.
+        class session_t *session;
+
+        //  Current reconnect ivl, updated for backoff strategy
+        int current_reconnect_ivl;
+
+        ipc_connecter_t (const ipc_connecter_t&);
+        const ipc_connecter_t &operator = (const ipc_connecter_t&);
+    };
+
+}
+
+#endif