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/*
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/>.
*/
#include "zmq_connecter.hpp"
#include "zmq_init.hpp"
#include "io_thread.hpp"
#include "err.hpp"
zmq::zmq_connecter_t::zmq_connecter_t (io_thread_t *parent_,
socket_base_t *owner_, const options_t &options_) :
owned_t (parent_, owner_),
io_object_t (parent_),
handle_valid (false),
options (options_)
{
}
zmq::zmq_connecter_t::~zmq_connecter_t ()
{
}
int zmq::zmq_connecter_t::set_address (const char *addr_)
{
return tcp_connecter.set_address (addr_);
}
void zmq::zmq_connecter_t::process_plug ()
{
start_connecting ();
owned_t::process_plug ();
}
void zmq::zmq_connecter_t::process_unplug ()
{
if (handle_valid)
rm_fd (handle);
}
void zmq::zmq_connecter_t::in_event ()
{
// We are not polling for incomming data, so we are actually called
// because of error here. However, we can get error on out event as well
// on some platforms, so we'll simply handle both events in the same way.
out_event ();
}
void zmq::zmq_connecter_t::out_event ()
{
fd_t fd = tcp_connecter.connect ();
rm_fd (handle);
handle_valid = false;
// If there was error during the connecting, close the socket and wait
// for a while before trying to reconnect.
if (fd == retired_fd) {
tcp_connecter.close ();
add_timer ();
return;
}
// Create an init object.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_init_t *init = new zmq_init_t (io_thread, owner, fd, true, options);
zmq_assert (init);
send_plug (init);
send_own (owner, init);
// Ask owner socket to shut the connecter down.
term ();
}
void zmq::zmq_connecter_t::timer_event ()
{
// Reconnect period have elapsed.
start_connecting ();
}
void zmq::zmq_connecter_t::start_connecting ()
{
// Open the connecting socket.
int rc = tcp_connecter.open ();
// Connect may succeed in synchronous manner.
if (rc == 0) {
out_event ();
return;
}
// Connection establishment may be dealyed. Poll for its completion.
else if (rc == -1 && errno == EINPROGRESS) {
handle = add_fd (tcp_connecter.get_fd ());
handle_valid = true;
set_pollout (handle);
return;
}
// If none of the above is true, synchronous error occured.
// Wait for a while and retry.
add_timer ();
}
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