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138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __TIPC_CONNECTER_HPP_INCLUDED__
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#define __TIPC_CONNECTER_HPP_INCLUDED__
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#include "platform.hpp"
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#if defined ZMQ_HAVE_TIPC
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#include "fd.hpp"
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#include "own.hpp"
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#include "stdint.hpp"
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#include "io_object.hpp"
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namespace zmq
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{
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class io_thread_t;
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class session_base_t;
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struct address_t;
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class tipc_connecter_t : public own_t, public io_object_t
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{
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public:
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// If 'delayed_start' is true connecter first waits for a while,
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// then starts connection process.
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tipc_connecter_t (zmq::io_thread_t *io_thread_,
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zmq::session_base_t *session_, const options_t &options_,
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const address_t *addr_, bool delayed_start_);
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~tipc_connecter_t ();
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private:
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// ID of the timer used to delay the reconnection.
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enum {reconnect_timer_id = 1};
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// Handlers for incoming commands.
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void process_plug ();
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void process_term (int linger_);
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// Handlers for I/O events.
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void in_event ();
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void out_event ();
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void timer_event (int id_);
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// Internal function to start the actual connection establishment.
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void start_connecting ();
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// Internal function to add a reconnect timer
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void add_reconnect_timer();
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// Close the connecting socket.
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void close ();
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// Get the file descriptor of newly created connection. Returns
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// retired_fd if the connection was unsuccessful.
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fd_t connect ();
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// Address to connect to. Owned by session_base_t.
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const address_t *addr;
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// Underlying socket.
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fd_t s;
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// Handle corresponding to the listening socket.
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handle_t handle;
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// If true file descriptor is registered with the poller and 'handle'
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// contains valid value.
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bool handle_valid;
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// If true, connecter is waiting a while before trying to connect.
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const bool delayed_start;
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// True iff a timer has been started.
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bool timer_started;
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// Reference to the session we belong to.
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zmq::session_base_t *session;
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// Current reconnect ivl, updated for backoff strategy
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int current_reconnect_ivl;
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// String representation of endpoint to connect to
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std::string endpoint;
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// Socket
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zmq::socket_base_t *socket;
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// Internal function to return a reconnect backoff delay.
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// Will modify the current_reconnect_ivl used for next call
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// Returns the currently used interval
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int get_new_reconnect_ivl ();
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// Open IPC connecting socket. Returns -1 in case of error,
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// 0 if connect was successful immediately. Returns -1 with
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// EAGAIN errno if async connect was launched.
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int open ();
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tipc_connecter_t (const tipc_connecter_t&);
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const tipc_connecter_t &operator = (const tipc_connecter_t&);
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};
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}
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#endif
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#endif
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