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/*
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/>.
*/
#include "vtcp_listener.hpp"
#if defined ZMQ_HAVE_VTCP
#include <string>
#include <string.h>
#include <vtcp.h>
#include "stream_engine.hpp"
#include "session_base.hpp"
#include "stdint.hpp"
#include "err.hpp"
#include "ip.hpp"
zmq::vtcp_listener_t::vtcp_listener_t (io_thread_t *io_thread_,
socket_base_t *socket_, options_t &options_) :
own_t (io_thread_, options_),
io_object_t (io_thread_),
s (retired_fd),
socket (socket_)
{
}
zmq::vtcp_listener_t::~vtcp_listener_t ()
{
if (s != retired_fd) {
int rc = ::close (s);
errno_assert (rc == 0);
s = retired_fd;
}
}
int zmq::vtcp_listener_t::set_address (const char *addr_)
{
// VTCP doesn't allow for binding to a specific interface. Connection
// string has to begin with *: (INADDR_ANY).
if (strlen (addr_) < 2 || addr_ [0] != '*' || addr_ [1] != ':') {
errno = EADDRNOTAVAIL;
return -1;
}
// Parse port and subport.
uint16_t port;
uint32_t subport;
const char *delimiter = strrchr (addr_, '.');
if (!delimiter) {
port = 9220;
subport = (uint32_t) atoi (addr_ + 2);
}
else {
std::string port_str (addr_ + 2, delimiter - addr_ - 2);
std::string subport_str (delimiter + 1);
port = (uint16_t) atoi (port_str.c_str ());
subport = (uint32_t) atoi (subport_str.c_str ());
}
// Start listening.
s = vtcp_bind (port, subport);
if (s == retired_fd)
return -1;
return 0;
}
void zmq::vtcp_listener_t::process_plug ()
{
// Start polling for incoming connections.
handle = add_fd (s);
set_pollin (handle);
}
void zmq::vtcp_listener_t::process_term (int linger_)
{
rm_fd (handle);
own_t::process_term (linger_);
}
void zmq::vtcp_listener_t::in_event ()
{
fd_t fd = vtcp_acceptb (s);
if (fd == retired_fd)
return;
tune_tcp_socket (fd);
// Create the engine object for this connection.
stream_engine_t *engine = new (std::nothrow) stream_engine_t (fd, options);
alloc_assert (engine);
// Choose I/O thread to run connecter in. Given that we are already
// running in an I/O thread, there must be at least one available.
io_thread_t *io_thread = choose_io_thread (options.affinity);
zmq_assert (io_thread);
// Create and launch a session object.
session_base_t *session = session_base_t::create (io_thread, false, socket,
options, NULL, NULL);
alloc_assert (session);
session->inc_seqnum ();
launch_child (session);
send_attach (session, engine, false);
}
#endif
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