mirror of
https://github.com/zeromq/libzmq.git
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159 lines
3.9 KiB
C++
159 lines
3.9 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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#include "precompiled.hpp"
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#include <string>
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#include <sstream>
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#include "macros.hpp"
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#include "udp_address.hpp"
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#include "stdint.hpp"
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#include "err.hpp"
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#include "ip.hpp"
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#ifndef ZMQ_HAVE_WINDOWS
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <ctype.h>
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#endif
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#include "ip_resolver.hpp"
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zmq::udp_address_t::udp_address_t () : is_multicast (false)
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{
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memset (&bind_address, 0, sizeof bind_address);
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memset (&dest_address, 0, sizeof dest_address);
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}
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zmq::udp_address_t::~udp_address_t ()
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{
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}
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int zmq::udp_address_t::resolve (const char *name_, bool bind_)
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{
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ip_resolver_options_t resolver_opts;
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resolver_opts.bindable (bind_)
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.allow_dns (!bind_)
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.allow_nic_name (bind_)
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.expect_port (true)
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.ipv6 (false);
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ip_resolver_t resolver (resolver_opts);
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ip_addr_t addr;
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int rc = resolver.resolve (&addr, name_);
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if (rc != 0) {
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return -1;
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}
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if (addr.generic.sa_family != AF_INET) {
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// Shouldn't happen
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return -1;
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}
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is_multicast = addr.is_multicast ();
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dest_address = addr.ipv4;
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if (is_multicast) {
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multicast = dest_address.sin_addr;
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}
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iface.s_addr = htonl (INADDR_ANY);
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if (iface.s_addr == INADDR_NONE) {
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errno = EINVAL;
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return -1;
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}
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// If a should bind and not a multicast, the dest address
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// is actually the bind address
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if (bind_ && !is_multicast)
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bind_address = dest_address;
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else {
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bind_address.sin_family = AF_INET;
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bind_address.sin_port = dest_address.sin_port;
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bind_address.sin_addr.s_addr = htonl (INADDR_ANY);
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}
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address = name_;
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return 0;
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}
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int zmq::udp_address_t::to_string (std::string &addr_)
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{
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addr_ = address;
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return 0;
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}
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bool zmq::udp_address_t::is_mcast () const
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{
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return is_multicast;
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}
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const sockaddr *zmq::udp_address_t::bind_addr () const
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{
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return (sockaddr *) &bind_address;
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}
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socklen_t zmq::udp_address_t::bind_addrlen () const
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{
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return sizeof (sockaddr_in);
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}
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const sockaddr *zmq::udp_address_t::dest_addr () const
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{
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return (sockaddr *) &dest_address;
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}
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socklen_t zmq::udp_address_t::dest_addrlen () const
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{
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return sizeof (sockaddr_in);
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}
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const in_addr zmq::udp_address_t::multicast_ip () const
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{
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return multicast;
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}
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const in_addr zmq::udp_address_t::interface_ip () const
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{
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return iface;
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}
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#if defined ZMQ_HAVE_WINDOWS
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unsigned short zmq::udp_address_t::family () const
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#else
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sa_family_t zmq::udp_address_t::family () const
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#endif
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{
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return AF_INET;
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}
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