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/*
Copyright (c) 2009-2011 250bpm s.r.o.
Copyright (c) 2007-2010 iMatix Corporation
Copyright (c) 2011 VMware, Inc.
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 __ZMQ_H_INCLUDED__
#define __ZMQ_H_INCLUDED__

#ifdef __cplusplus
extern "C" {
#endif

#include <errno.h>
#include <stddef.h>
#if defined _WIN32
#include <winsock2.h>
#endif

/* Handle DSO symbol visibility */
#if defined _WIN32
# if defined DLL_EXPORT
# define ZMQ_EXPORT __declspec(dllexport)
# else
# define ZMQ_EXPORT __declspec(dllimport)
# endif
#else
# if defined __SUNPRO_C || defined __SUNPRO_CC
# define ZMQ_EXPORT __global
# elif (defined __GNUC__ && __GNUC__ >= 4) || defined __INTEL_COMPILER
# define ZMQ_EXPORT __attribute__ ((visibility("default")))
# else
# define ZMQ_EXPORT
# endif
#endif

/******************************************************************************/
/* 0MQ versioning support. */
/******************************************************************************/

/* Version macros for compile-time API version detection */
#define ZMQ_VERSION_MAJOR 3
#define ZMQ_VERSION_MINOR 1
#define ZMQ_VERSION_PATCH 1

#define ZMQ_MAKE_VERSION(major, minor, patch) \
((major) * 10000 + (minor) * 100 + (patch))
#define ZMQ_VERSION \
ZMQ_MAKE_VERSION(ZMQ_VERSION_MAJOR, ZMQ_VERSION_MINOR, ZMQ_VERSION_PATCH)

/* Run-time API version detection */
ZMQ_EXPORT void zmq_version (int *major, int *minor, int *patch);

/******************************************************************************/
/* 0MQ errors. */
/******************************************************************************/

/* A number random enough not to collide with different errno ranges on */
/* different OSes. The assumption is that error_t is at least 32-bit type. */
#define ZMQ_HAUSNUMERO 156384712

/* On Windows platform some of the standard POSIX errnos are not defined. */
#ifndef ENOTSUP
#define ENOTSUP (ZMQ_HAUSNUMERO + 1)
#endif
#ifndef EPROTONOSUPPORT
#define EPROTONOSUPPORT (ZMQ_HAUSNUMERO + 2)
#endif
#ifndef ENOBUFS
#define ENOBUFS (ZMQ_HAUSNUMERO + 3)
#endif
#ifndef ENETDOWN
#define ENETDOWN (ZMQ_HAUSNUMERO + 4)
#endif
#ifndef EADDRINUSE
#define EADDRINUSE (ZMQ_HAUSNUMERO + 5)
#endif
#ifndef EADDRNOTAVAIL
#define EADDRNOTAVAIL (ZMQ_HAUSNUMERO + 6)
#endif
#ifndef ECONNREFUSED
#define ECONNREFUSED (ZMQ_HAUSNUMERO + 7)
#endif
#ifndef EINPROGRESS
#define EINPROGRESS (ZMQ_HAUSNUMERO + 8)
#endif
#ifndef ENOTSOCK
#define ENOTSOCK (ZMQ_HAUSNUMERO + 9)
#endif
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT (ZMQ_HAUSNUMERO + 10)
#endif

/* Native 0MQ error codes. */
#define EFSM (ZMQ_HAUSNUMERO + 51)
#define ENOCOMPATPROTO (ZMQ_HAUSNUMERO + 52)
#define ETERM (ZMQ_HAUSNUMERO + 53)
#define EMTHREAD (ZMQ_HAUSNUMERO + 54)

/* This function retrieves the errno as it is known to 0MQ library. The goal */
/* of this function is to make the code 100% portable, including where 0MQ */
/* compiled with certain CRT library (on Windows) is linked to an */
/* application that uses different CRT library. */
ZMQ_EXPORT int zmq_errno (void);

/* Resolves system errors and 0MQ errors to human-readable string. */
ZMQ_EXPORT const char *zmq_strerror (int errnum);

/******************************************************************************/
/* 0MQ message definition. */
/******************************************************************************/

typedef struct {unsigned char _ [32];} zmq_msg_t;

typedef void (zmq_free_fn) (void *data, void *hint);

ZMQ_EXPORT int zmq_msg_init (zmq_msg_t *msg);
ZMQ_EXPORT int zmq_msg_init_size (zmq_msg_t *msg, size_t size);
ZMQ_EXPORT int zmq_msg_init_data (zmq_msg_t *msg, void *data,
    size_t size, zmq_free_fn *ffn, void *hint);
ZMQ_EXPORT int zmq_msg_close (zmq_msg_t *msg);
ZMQ_EXPORT int zmq_msg_move (zmq_msg_t *dest, zmq_msg_t *src);
ZMQ_EXPORT int zmq_msg_copy (zmq_msg_t *dest, zmq_msg_t *src);
ZMQ_EXPORT void *zmq_msg_data (zmq_msg_t *msg);
ZMQ_EXPORT size_t zmq_msg_size (zmq_msg_t *msg);
ZMQ_EXPORT int zmq_getmsgopt (zmq_msg_t *msg, int option, void *optval,
    size_t *optvallen);

/******************************************************************************/
/* 0MQ infrastructure (a.k.a. context) initialisation & termination. */
/******************************************************************************/

ZMQ_EXPORT void *zmq_init (int io_threads);
ZMQ_EXPORT int zmq_term (void *context);

/******************************************************************************/
/* 0MQ socket definition. */
/******************************************************************************/

/* Socket types. */
#define ZMQ_PAIR 0
#define ZMQ_PUB 1
#define ZMQ_SUB 2
#define ZMQ_REQ 3
#define ZMQ_REP 4
#define ZMQ_XREQ 5
#define ZMQ_XREP 6
#define ZMQ_PULL 7
#define ZMQ_PUSH 8
#define ZMQ_XPUB 9
#define ZMQ_XSUB 10

#define ZMQ_ROUTER ZMQ_XREP
#define ZMQ_DEALER ZMQ_XREQ

/* Socket options. */
#define ZMQ_AFFINITY 4
#define ZMQ_IDENTITY 5
#define ZMQ_SUBSCRIBE 6
#define ZMQ_UNSUBSCRIBE 7
#define ZMQ_RATE 8
#define ZMQ_RECOVERY_IVL 9
#define ZMQ_SNDBUF 11
#define ZMQ_RCVBUF 12
#define ZMQ_RCVMORE 13
#define ZMQ_FD 14
#define ZMQ_EVENTS 15
#define ZMQ_TYPE 16
#define ZMQ_LINGER 17
#define ZMQ_RECONNECT_IVL 18
#define ZMQ_BACKLOG 19
#define ZMQ_RECONNECT_IVL_MAX 21
#define ZMQ_MAXMSGSIZE 22
#define ZMQ_SNDHWM 23
#define ZMQ_RCVHWM 24
#define ZMQ_MULTICAST_HOPS 25
#define ZMQ_RCVTIMEO 27
#define ZMQ_SNDTIMEO 28
#define ZMQ_IPV4ONLY 31

/* Message options */
#define ZMQ_MORE 1

/* Send/recv options. */
#define ZMQ_DONTWAIT 1
#define ZMQ_SNDMORE 2

ZMQ_EXPORT void *zmq_socket (void *context, int type);
ZMQ_EXPORT int zmq_close (void *s);
ZMQ_EXPORT int zmq_setsockopt (void *s, int option, const void *optval,
    size_t optvallen);
ZMQ_EXPORT int zmq_getsockopt (void *s, int option, void *optval,
    size_t *optvallen);
ZMQ_EXPORT int zmq_bind (void *s, const char *addr);
ZMQ_EXPORT int zmq_connect (void *s, const char *addr);
ZMQ_EXPORT int zmq_send (void *s, const void *buf, size_t len, int flags);
ZMQ_EXPORT int zmq_recv (void *s, void *buf, size_t len, int flags);
ZMQ_EXPORT int zmq_sendmsg (void *s, zmq_msg_t *msg, int flags);
ZMQ_EXPORT int zmq_recvmsg (void *s, zmq_msg_t *msg, int flags);

/******************************************************************************/
/* I/O multiplexing. */
/******************************************************************************/

#define ZMQ_POLLIN 1
#define ZMQ_POLLOUT 2
#define ZMQ_POLLERR 4

typedef struct
{
    void *socket;
#if defined _WIN32
    SOCKET fd;
#else
    int fd;
#endif
    short events;
    short revents;
} zmq_pollitem_t;

ZMQ_EXPORT int zmq_poll (zmq_pollitem_t *items, int nitems, long timeout);

#undef ZMQ_EXPORT

#ifdef __cplusplus
}
#endif

#endif
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