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+/*
+    Copyright (c) 2007-2013 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 __ZMQ_OPTIONS_HPP_INCLUDED__
+#define __ZMQ_OPTIONS_HPP_INCLUDED__
+
+#include <string>
+#include <vector>
+
+#include "stddef.h"
+#include "stdint.hpp"
+#include "tcp_address.hpp"
+#include "../include/zmq.h"
+
+//  Normal base 256 key is 32 bytes
+#define CURVE_KEYSIZE       32
+//  Key encoded using Z85 is 40 bytes
+#define CURVE_KEYSIZE_Z85   40
+
+namespace zmq
+{
+    struct options_t
+    {
+        options_t ();
+
+        int setsockopt (int option_, const void *optval_, size_t optvallen_);
+        int getsockopt (int option_, void *optval_, size_t *optvallen_);
+
+        //  High-water marks for message pipes.
+        int sndhwm;
+        int rcvhwm;
+
+        //  I/O thread affinity.
+        uint64_t affinity;
+
+        //  Socket identity
+        unsigned char identity_size;
+        unsigned char identity [256];
+
+        //  Maximum transfer rate [kb/s]. Default 100kb/s.
+        int rate;
+
+        //  Reliability time interval [ms]. Default 10 seconds.
+        int recovery_ivl;
+
+        // Sets the time-to-live field in every multicast packet sent.
+        int multicast_hops;
+
+        // SO_SNDBUF and SO_RCVBUF to be passed to underlying transport sockets.
+        int sndbuf;
+        int rcvbuf;
+
+        //  Socket type.
+        int type;
+
+        //  Linger time, in milliseconds.
+        int linger;
+
+        //  Minimum interval between attempts to reconnect, in milliseconds.
+        //  Default 100ms
+        int reconnect_ivl;
+
+        //  Maximum interval between attempts to reconnect, in milliseconds.
+        //  Default 0 (unused)
+        int reconnect_ivl_max;
+
+        //  Maximum backlog for pending connections.
+        int backlog;
+
+        //  Maximal size of message to handle.
+        int64_t maxmsgsize;
+
+        // The timeout for send/recv operations for this socket.
+        int rcvtimeo;
+        int sndtimeo;
+
+        //  If true, IPv6 is enabled (as well as IPv4)
+        bool ipv6;
+
+        //  If 1, connecting pipes are not attached immediately, meaning a send()
+        //  on a socket with only connecting pipes would block
+        int immediate;
+
+        //  If 1, (X)SUB socket should filter the messages. If 0, it should not.
+        bool filter;
+
+        //  If true, the identity message is forwarded to the socket.
+        bool recv_identity;
+
+        // if true, router socket accepts non-zmq tcp connections
+        bool raw_sock;
+
+        //  TCP keep-alive settings.
+        //  Defaults to -1 = do not change socket options
+        int tcp_keepalive;
+        int tcp_keepalive_cnt;
+        int tcp_keepalive_idle;
+        int tcp_keepalive_intvl;
+
+        // TCP accept() filters
+        typedef std::vector <tcp_address_mask_t> tcp_accept_filters_t;
+        tcp_accept_filters_t tcp_accept_filters;
+
+        //  Security mechanism for all connections on this socket
+        int mechanism;
+
+        //  If peer is acting as server for PLAIN or CURVE mechanisms
+        int as_server;
+
+        //  ZAP authentication domain
+        std::string zap_domain;
+
+        //  Security credentials for PLAIN mechanism
+        std::string plain_username;
+        std::string plain_password;
+
+        //  Security credentials for CURVE mechanism
+        uint8_t curve_public_key [CURVE_KEYSIZE];
+        uint8_t curve_secret_key [CURVE_KEYSIZE];
+        uint8_t curve_server_key [CURVE_KEYSIZE];
+
+        //  ID of the socket.
+        int socket_id;
+
+        //  If true, socket conflates outgoing/incoming messages.
+        //  Applicable to dealer, push/pull, pub/sub socket types.
+        //  Cannot receive multi-part messages.
+        //  Ignores hwm
+        bool conflate;
+    };
+}
+
+#endif