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Diffstat (limited to 'src/vtcp_connecter.hpp')
-rw-r--r-- | src/vtcp_connecter.hpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/vtcp_connecter.hpp b/src/vtcp_connecter.hpp new file mode 100644 index 0000000..61a592f --- /dev/null +++ b/src/vtcp_connecter.hpp @@ -0,0 +1,121 @@ +/* + 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 __VTCP_CONNECTER_HPP_INCLUDED__ +#define __VTCP_CONNECTER_HPP_INCLUDED__ + +#include "platform.hpp" + +#if defined ZMQ_HAVE_VTCP + +#include <vtcp.h> + +#include "fd.hpp" +#include "ip.hpp" +#include "own.hpp" +#include "io_object.hpp" +#include "stdint.hpp" + +namespace zmq +{ + + class vtcp_connecter_t : public own_t, public io_object_t + { + public: + + // If 'delay' is true connecter first waits for a while, then starts + // connection process. + vtcp_connecter_t (class io_thread_t *io_thread_, + class session_t *session_, const options_t &options_, + const char *address_, bool delay_); + ~vtcp_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; + vtcp_subport_t subport; + + // 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; + + vtcp_connecter_t (const vtcp_connecter_t&); + const vtcp_connecter_t &operator = (const vtcp_connecter_t&); + }; + +} + +#endif + +#endif |