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libzmq/include/zmq.h
Luca Boccassi da31917f4f Relicense from LGPL3 + exceptions to Mozilla Public License version 2.0 
Relicense permission collected from all relevant authors as tallied at:
https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md
The relicense grants are collected under RELICENSE/ and will be moved
to the above repository in a later commit.

Fixes https://github.com/zeromq/libzmq/issues/2376
2023-06-05 20:31:47 +01:00

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/* SPDX-License-Identifier: MPL-2.0 */
/* *************************************************************************
NOTE to contributors. This file comprises the principal public contract
for ZeroMQ API users. Any change to this file supplied in a stable
release SHOULD not break existing applications.
In practice this means that the value of constants must not change, and
that old values may not be reused for new constants.
*************************************************************************
*/
#ifndef __ZMQ_H_INCLUDED__
#define __ZMQ_H_INCLUDED__
/* Version macros for compile-time API version detection */
#define ZMQ_VERSION_MAJOR 4
#define ZMQ_VERSION_MINOR 3
#define ZMQ_VERSION_PATCH 5
#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)
#ifdef __cplusplus
extern "C" {
#endif
#if !defined _WIN32_WCE
#include <errno.h>
#endif
#include <stddef.h>
#include <stdio.h>
/* Handle DSO symbol visibility */
#if defined ZMQ_NO_EXPORT
#define ZMQ_EXPORT
#else
#if defined _WIN32
#if defined ZMQ_STATIC
#define ZMQ_EXPORT
#elif 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
#endif
/* Define integer types needed for event interface */
#define ZMQ_DEFINED_STDINT 1
#if defined ZMQ_HAVE_SOLARIS || defined ZMQ_HAVE_OPENVMS
#include <inttypes.h>
#elif defined _MSC_VER && _MSC_VER < 1600
#ifndef uint64_t
typedef unsigned __int64 uint64_t;
#endif
#ifndef int32_t
typedef __int32 int32_t;
#endif
#ifndef uint32_t
typedef unsigned __int32 uint32_t;
#endif
#ifndef uint16_t
typedef unsigned __int16 uint16_t;
#endif
#ifndef uint8_t
typedef unsigned __int8 uint8_t;
#endif
#else
#include <stdint.h>
#endif
#if !defined _WIN32
// needed for sigset_t definition in zmq_ppoll
#include <signal.h>
#endif
// 32-bit AIX's pollfd struct members are called reqevents and rtnevents so it
// defines compatibility macros for them. Need to include that header first to
// stop build failures since zmq_pollset_t defines them as events and revents.
#ifdef ZMQ_HAVE_AIX
#include <poll.h>
#endif
/******************************************************************************/
/* 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 EMSGSIZE
#define EMSGSIZE (ZMQ_HAUSNUMERO + 10)
#endif
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT (ZMQ_HAUSNUMERO + 11)
#endif
#ifndef ENETUNREACH
#define ENETUNREACH (ZMQ_HAUSNUMERO + 12)
#endif
#ifndef ECONNABORTED
#define ECONNABORTED (ZMQ_HAUSNUMERO + 13)
#endif
#ifndef ECONNRESET
#define ECONNRESET (ZMQ_HAUSNUMERO + 14)
#endif
#ifndef ENOTCONN
#define ENOTCONN (ZMQ_HAUSNUMERO + 15)
#endif
#ifndef ETIMEDOUT
#define ETIMEDOUT (ZMQ_HAUSNUMERO + 16)
#endif
#ifndef EHOSTUNREACH
#define EHOSTUNREACH (ZMQ_HAUSNUMERO + 17)
#endif
#ifndef ENETRESET
#define ENETRESET (ZMQ_HAUSNUMERO + 18)
#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_);
/* Run-time API version detection */
ZMQ_EXPORT void zmq_version (int *major_, int *minor_, int *patch_);
/******************************************************************************/
/* 0MQ infrastructure (a.k.a. context) initialisation & termination. */
/******************************************************************************/
/* Context options */
#define ZMQ_IO_THREADS 1
#define ZMQ_MAX_SOCKETS 2
#define ZMQ_SOCKET_LIMIT 3
#define ZMQ_THREAD_PRIORITY 3
#define ZMQ_THREAD_SCHED_POLICY 4
#define ZMQ_MAX_MSGSZ 5
#define ZMQ_MSG_T_SIZE 6
#define ZMQ_THREAD_AFFINITY_CPU_ADD 7
#define ZMQ_THREAD_AFFINITY_CPU_REMOVE 8
#define ZMQ_THREAD_NAME_PREFIX 9
/* Default for new contexts */
#define ZMQ_IO_THREADS_DFLT 1
#define ZMQ_MAX_SOCKETS_DFLT 1023
#define ZMQ_THREAD_PRIORITY_DFLT -1
#define ZMQ_THREAD_SCHED_POLICY_DFLT -1
ZMQ_EXPORT void *zmq_ctx_new (void);
ZMQ_EXPORT int zmq_ctx_term (void *context_);
ZMQ_EXPORT int zmq_ctx_shutdown (void *context_);
ZMQ_EXPORT int zmq_ctx_set (void *context_, int option_, int optval_);
ZMQ_EXPORT int zmq_ctx_get (void *context_, int option_);
/* Old (legacy) API */
ZMQ_EXPORT void *zmq_init (int io_threads_);
ZMQ_EXPORT int zmq_term (void *context_);
ZMQ_EXPORT int zmq_ctx_destroy (void *context_);
/******************************************************************************/
/* 0MQ message definition. */
/******************************************************************************/
/* Some architectures, like sparc64 and some variants of aarch64, enforce pointer
* alignment and raise sigbus on violations. Make sure applications allocate
* zmq_msg_t on addresses aligned on a pointer-size boundary to avoid this issue.
*/
typedef struct zmq_msg_t
{
#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
__declspec(align (8)) unsigned char _[64];
#elif defined(_MSC_VER) \
&& (defined(_M_IX86) || defined(_M_ARM_ARMV7VE) || defined(_M_ARM))
__declspec(align (4)) unsigned char _[64];
#elif defined(__GNUC__) || defined(__INTEL_COMPILER) \
|| (defined(__SUNPRO_C) && __SUNPRO_C >= 0x590) \
|| (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
unsigned char _[64] __attribute__ ((aligned (sizeof (void *))));
#else
unsigned char _[64];
#endif
} 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_send (zmq_msg_t *msg_, void *s_, int flags_);
ZMQ_EXPORT int zmq_msg_recv (zmq_msg_t *msg_, void *s_, int flags_);
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 (const zmq_msg_t *msg_);
ZMQ_EXPORT int zmq_msg_more (const zmq_msg_t *msg_);
ZMQ_EXPORT int zmq_msg_get (const zmq_msg_t *msg_, int property_);
ZMQ_EXPORT int zmq_msg_set (zmq_msg_t *msg_, int property_, int optval_);
ZMQ_EXPORT const char *zmq_msg_gets (const zmq_msg_t *msg_,
const char *property_);
/******************************************************************************/
/* 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_DEALER 5
#define ZMQ_ROUTER 6
#define ZMQ_PULL 7
#define ZMQ_PUSH 8
#define ZMQ_XPUB 9
#define ZMQ_XSUB 10
#define ZMQ_STREAM 11
/* Deprecated aliases */
#define ZMQ_XREQ ZMQ_DEALER
#define ZMQ_XREP ZMQ_ROUTER
/* Socket options. */
#define ZMQ_AFFINITY 4
#define ZMQ_ROUTING_ID 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_LAST_ENDPOINT 32
#define ZMQ_ROUTER_MANDATORY 33
#define ZMQ_TCP_KEEPALIVE 34
#define ZMQ_TCP_KEEPALIVE_CNT 35
#define ZMQ_TCP_KEEPALIVE_IDLE 36
#define ZMQ_TCP_KEEPALIVE_INTVL 37
#define ZMQ_IMMEDIATE 39
#define ZMQ_XPUB_VERBOSE 40
#define ZMQ_ROUTER_RAW 41
#define ZMQ_IPV6 42
#define ZMQ_MECHANISM 43
#define ZMQ_PLAIN_SERVER 44
#define ZMQ_PLAIN_USERNAME 45
#define ZMQ_PLAIN_PASSWORD 46
#define ZMQ_CURVE_SERVER 47
#define ZMQ_CURVE_PUBLICKEY 48
#define ZMQ_CURVE_SECRETKEY 49
#define ZMQ_CURVE_SERVERKEY 50
#define ZMQ_PROBE_ROUTER 51
#define ZMQ_REQ_CORRELATE 52
#define ZMQ_REQ_RELAXED 53
#define ZMQ_CONFLATE 54
#define ZMQ_ZAP_DOMAIN 55
#define ZMQ_ROUTER_HANDOVER 56
#define ZMQ_TOS 57
#define ZMQ_CONNECT_ROUTING_ID 61
#define ZMQ_GSSAPI_SERVER 62
#define ZMQ_GSSAPI_PRINCIPAL 63
#define ZMQ_GSSAPI_SERVICE_PRINCIPAL 64
#define ZMQ_GSSAPI_PLAINTEXT 65
#define ZMQ_HANDSHAKE_IVL 66
#define ZMQ_SOCKS_PROXY 68
#define ZMQ_XPUB_NODROP 69
#define ZMQ_BLOCKY 70
#define ZMQ_XPUB_MANUAL 71
#define ZMQ_XPUB_WELCOME_MSG 72
#define ZMQ_STREAM_NOTIFY 73
#define ZMQ_INVERT_MATCHING 74
#define ZMQ_HEARTBEAT_IVL 75
#define ZMQ_HEARTBEAT_TTL 76
#define ZMQ_HEARTBEAT_TIMEOUT 77
#define ZMQ_XPUB_VERBOSER 78
#define ZMQ_CONNECT_TIMEOUT 79
#define ZMQ_TCP_MAXRT 80
#define ZMQ_THREAD_SAFE 81
#define ZMQ_MULTICAST_MAXTPDU 84
#define ZMQ_VMCI_BUFFER_SIZE 85
#define ZMQ_VMCI_BUFFER_MIN_SIZE 86
#define ZMQ_VMCI_BUFFER_MAX_SIZE 87
#define ZMQ_VMCI_CONNECT_TIMEOUT 88
#define ZMQ_USE_FD 89
#define ZMQ_GSSAPI_PRINCIPAL_NAMETYPE 90
#define ZMQ_GSSAPI_SERVICE_PRINCIPAL_NAMETYPE 91
#define ZMQ_BINDTODEVICE 92
/* Message options */
#define ZMQ_MORE 1
#define ZMQ_SHARED 3
/* Send/recv options. */
#define ZMQ_DONTWAIT 1
#define ZMQ_SNDMORE 2
/* Security mechanisms */
#define ZMQ_NULL 0
#define ZMQ_PLAIN 1
#define ZMQ_CURVE 2
#define ZMQ_GSSAPI 3
/* RADIO-DISH protocol */
#define ZMQ_GROUP_MAX_LENGTH 255
/* Deprecated options and aliases */
#define ZMQ_IDENTITY ZMQ_ROUTING_ID
#define ZMQ_CONNECT_RID ZMQ_CONNECT_ROUTING_ID
#define ZMQ_TCP_ACCEPT_FILTER 38
#define ZMQ_IPC_FILTER_PID 58
#define ZMQ_IPC_FILTER_UID 59
#define ZMQ_IPC_FILTER_GID 60
#define ZMQ_IPV4ONLY 31
#define ZMQ_DELAY_ATTACH_ON_CONNECT ZMQ_IMMEDIATE
#define ZMQ_NOBLOCK ZMQ_DONTWAIT
#define ZMQ_FAIL_UNROUTABLE ZMQ_ROUTER_MANDATORY
#define ZMQ_ROUTER_BEHAVIOR ZMQ_ROUTER_MANDATORY
/* Deprecated Message options */
#define ZMQ_SRCFD 2
/******************************************************************************/
/* GSSAPI definitions */
/******************************************************************************/
/* GSSAPI principal name types */
#define ZMQ_GSSAPI_NT_HOSTBASED 0
#define ZMQ_GSSAPI_NT_USER_NAME 1
#define ZMQ_GSSAPI_NT_KRB5_PRINCIPAL 2
/******************************************************************************/
/* 0MQ socket events and monitoring */
/******************************************************************************/
/* Socket transport events (TCP, IPC and TIPC only) */
#define ZMQ_EVENT_CONNECTED 0x0001
#define ZMQ_EVENT_CONNECT_DELAYED 0x0002
#define ZMQ_EVENT_CONNECT_RETRIED 0x0004
#define ZMQ_EVENT_LISTENING 0x0008
#define ZMQ_EVENT_BIND_FAILED 0x0010
#define ZMQ_EVENT_ACCEPTED 0x0020
#define ZMQ_EVENT_ACCEPT_FAILED 0x0040
#define ZMQ_EVENT_CLOSED 0x0080
#define ZMQ_EVENT_CLOSE_FAILED 0x0100
#define ZMQ_EVENT_DISCONNECTED 0x0200
#define ZMQ_EVENT_MONITOR_STOPPED 0x0400
#define ZMQ_EVENT_ALL 0xFFFF
/* Unspecified system errors during handshake. Event value is an errno. */
#define ZMQ_EVENT_HANDSHAKE_FAILED_NO_DETAIL 0x0800
/* Handshake complete successfully with successful authentication (if *
* enabled). Event value is unused. */
#define ZMQ_EVENT_HANDSHAKE_SUCCEEDED 0x1000
/* Protocol errors between ZMTP peers or between server and ZAP handler. *
* Event value is one of ZMQ_PROTOCOL_ERROR_* */
#define ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL 0x2000
/* Failed authentication requests. Event value is the numeric ZAP status *
* code, i.e. 300, 400 or 500. */
#define ZMQ_EVENT_HANDSHAKE_FAILED_AUTH 0x4000
#define ZMQ_PROTOCOL_ERROR_ZMTP_UNSPECIFIED 0x10000000
#define ZMQ_PROTOCOL_ERROR_ZMTP_UNEXPECTED_COMMAND 0x10000001
#define ZMQ_PROTOCOL_ERROR_ZMTP_INVALID_SEQUENCE 0x10000002
#define ZMQ_PROTOCOL_ERROR_ZMTP_KEY_EXCHANGE 0x10000003
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_UNSPECIFIED 0x10000011
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_MESSAGE 0x10000012
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_HELLO 0x10000013
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_INITIATE 0x10000014
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_ERROR 0x10000015
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_READY 0x10000016
#define ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_WELCOME 0x10000017
#define ZMQ_PROTOCOL_ERROR_ZMTP_INVALID_METADATA 0x10000018
// the following two may be due to erroneous configuration of a peer
#define ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC 0x11000001
#define ZMQ_PROTOCOL_ERROR_ZMTP_MECHANISM_MISMATCH 0x11000002
#define ZMQ_PROTOCOL_ERROR_ZAP_UNSPECIFIED 0x20000000
#define ZMQ_PROTOCOL_ERROR_ZAP_MALFORMED_REPLY 0x20000001
#define ZMQ_PROTOCOL_ERROR_ZAP_BAD_REQUEST_ID 0x20000002
#define ZMQ_PROTOCOL_ERROR_ZAP_BAD_VERSION 0x20000003
#define ZMQ_PROTOCOL_ERROR_ZAP_INVALID_STATUS_CODE 0x20000004
#define ZMQ_PROTOCOL_ERROR_ZAP_INVALID_METADATA 0x20000005
#define ZMQ_PROTOCOL_ERROR_WS_UNSPECIFIED 0x30000000
ZMQ_EXPORT void *zmq_socket (void *, 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_unbind (void *s_, const char *addr_);
ZMQ_EXPORT int zmq_disconnect (void *s_, const char *addr_);
ZMQ_EXPORT int zmq_send (void *s_, const void *buf_, size_t len_, int flags_);
ZMQ_EXPORT int
zmq_send_const (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_socket_monitor (void *s_, const char *addr_, int events_);
/******************************************************************************/
/* Hide socket fd type; this was before zmq_poller_event_t typedef below */
/******************************************************************************/
#if defined _WIN32
// Windows uses a pointer-sized unsigned integer to store the socket fd.
#if defined _WIN64
typedef unsigned __int64 zmq_fd_t;
#else
typedef unsigned int zmq_fd_t;
#endif
#else
typedef int zmq_fd_t;
#endif
/******************************************************************************/
/* Deprecated I/O multiplexing. Prefer using zmq_poller API */
/******************************************************************************/
#define ZMQ_POLLIN 1
#define ZMQ_POLLOUT 2
#define ZMQ_POLLERR 4
#define ZMQ_POLLPRI 8
typedef struct zmq_pollitem_t
{
void *socket;
zmq_fd_t fd;
short events;
short revents;
} zmq_pollitem_t;
#define ZMQ_POLLITEMS_DFLT 16
ZMQ_EXPORT int zmq_poll (zmq_pollitem_t *items_, int nitems_, long timeout_);
/******************************************************************************/
/* Message proxying */
/******************************************************************************/
ZMQ_EXPORT int zmq_proxy (void *frontend_, void *backend_, void *capture_);
ZMQ_EXPORT int zmq_proxy_steerable (void *frontend_,
void *backend_,
void *capture_,
void *control_);
/******************************************************************************/
/* Probe library capabilities */
/******************************************************************************/
#define ZMQ_HAS_CAPABILITIES 1
ZMQ_EXPORT int zmq_has (const char *capability_);
/* Deprecated aliases */
#define ZMQ_STREAMER 1
#define ZMQ_FORWARDER 2
#define ZMQ_QUEUE 3
/* Deprecated methods */
ZMQ_EXPORT int zmq_device (int type_, void *frontend_, void *backend_);
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_);
struct iovec;
ZMQ_EXPORT int
zmq_sendiov (void *s_, struct iovec *iov_, size_t count_, int flags_);
ZMQ_EXPORT int
zmq_recviov (void *s_, struct iovec *iov_, size_t *count_, int flags_);
/******************************************************************************/
/* Encryption functions */
/******************************************************************************/
/* Encode data with Z85 encoding. Returns encoded data */
ZMQ_EXPORT char *
zmq_z85_encode (char *dest_, const uint8_t *data_, size_t size_);
/* Decode data with Z85 encoding. Returns decoded data */
ZMQ_EXPORT uint8_t *zmq_z85_decode (uint8_t *dest_, const char *string_);
/* Generate z85-encoded public and private keypair with libsodium. */
/* Returns 0 on success. */
ZMQ_EXPORT int zmq_curve_keypair (char *z85_public_key_, char *z85_secret_key_);
/* Derive the z85-encoded public key from the z85-encoded secret key. */
/* Returns 0 on success. */
ZMQ_EXPORT int zmq_curve_public (char *z85_public_key_,
const char *z85_secret_key_);
/******************************************************************************/
/* Atomic utility methods */
/******************************************************************************/
ZMQ_EXPORT void *zmq_atomic_counter_new (void);
ZMQ_EXPORT void zmq_atomic_counter_set (void *counter_, int value_);
ZMQ_EXPORT int zmq_atomic_counter_inc (void *counter_);
ZMQ_EXPORT int zmq_atomic_counter_dec (void *counter_);
ZMQ_EXPORT int zmq_atomic_counter_value (void *counter_);
ZMQ_EXPORT void zmq_atomic_counter_destroy (void **counter_p_);
/******************************************************************************/
/* Scheduling timers */
/******************************************************************************/
#define ZMQ_HAVE_TIMERS
typedef void (zmq_timer_fn) (int timer_id, void *arg);
ZMQ_EXPORT void *zmq_timers_new (void);
ZMQ_EXPORT int zmq_timers_destroy (void **timers_p);
ZMQ_EXPORT int
zmq_timers_add (void *timers, size_t interval, zmq_timer_fn handler, void *arg);
ZMQ_EXPORT int zmq_timers_cancel (void *timers, int timer_id);
ZMQ_EXPORT int
zmq_timers_set_interval (void *timers, int timer_id, size_t interval);
ZMQ_EXPORT int zmq_timers_reset (void *timers, int timer_id);
ZMQ_EXPORT long zmq_timers_timeout (void *timers);
ZMQ_EXPORT int zmq_timers_execute (void *timers);
/******************************************************************************/
/* These functions are not documented by man pages -- use at your own risk. */
/* If you need these to be part of the formal ZMQ API, then (a) write a man */
/* page, and (b) write a test case in tests. */
/******************************************************************************/
/* Helper functions are used by perf tests so that they don't have to care */
/* about minutiae of time-related functions on different OS platforms. */
/* Starts the stopwatch. Returns the handle to the watch. */
ZMQ_EXPORT void *zmq_stopwatch_start (void);
/* Returns the number of microseconds elapsed since the stopwatch was */
/* started, but does not stop or deallocate the stopwatch. */
ZMQ_EXPORT unsigned long zmq_stopwatch_intermediate (void *watch_);
/* Stops the stopwatch. Returns the number of microseconds elapsed since */
/* the stopwatch was started, and deallocates that watch. */
ZMQ_EXPORT unsigned long zmq_stopwatch_stop (void *watch_);
/* Sleeps for specified number of seconds. */
ZMQ_EXPORT void zmq_sleep (int seconds_);
typedef void (zmq_thread_fn) (void *);
/* Start a thread. Returns a handle to the thread. */
ZMQ_EXPORT void *zmq_threadstart (zmq_thread_fn *func_, void *arg_);
/* Wait for thread to complete then free up resources. */
ZMQ_EXPORT void zmq_threadclose (void *thread_);
/******************************************************************************/
/* These functions are DRAFT and disabled in stable releases, and subject to */
/* change at ANY time until declared stable. */
/******************************************************************************/
#ifdef ZMQ_BUILD_DRAFT_API
/* DRAFT Socket types. */
#define ZMQ_SERVER 12
#define ZMQ_CLIENT 13
#define ZMQ_RADIO 14
#define ZMQ_DISH 15
#define ZMQ_GATHER 16
#define ZMQ_SCATTER 17
#define ZMQ_DGRAM 18
#define ZMQ_PEER 19
#define ZMQ_CHANNEL 20
/* DRAFT Socket options. */
#define ZMQ_ZAP_ENFORCE_DOMAIN 93
#define ZMQ_LOOPBACK_FASTPATH 94
#define ZMQ_METADATA 95
#define ZMQ_MULTICAST_LOOP 96
#define ZMQ_ROUTER_NOTIFY 97
#define ZMQ_XPUB_MANUAL_LAST_VALUE 98
#define ZMQ_SOCKS_USERNAME 99
#define ZMQ_SOCKS_PASSWORD 100
#define ZMQ_IN_BATCH_SIZE 101
#define ZMQ_OUT_BATCH_SIZE 102
#define ZMQ_WSS_KEY_PEM 103
#define ZMQ_WSS_CERT_PEM 104
#define ZMQ_WSS_TRUST_PEM 105
#define ZMQ_WSS_HOSTNAME 106
#define ZMQ_WSS_TRUST_SYSTEM 107
#define ZMQ_ONLY_FIRST_SUBSCRIBE 108
#define ZMQ_RECONNECT_STOP 109
#define ZMQ_HELLO_MSG 110
#define ZMQ_DISCONNECT_MSG 111
#define ZMQ_PRIORITY 112
#define ZMQ_BUSY_POLL 113
#define ZMQ_HICCUP_MSG 114
#define ZMQ_XSUB_VERBOSE_UNSUBSCRIBE 115
#define ZMQ_TOPICS_COUNT 116
#define ZMQ_NORM_MODE 117
#define ZMQ_NORM_UNICAST_NACK 118
#define ZMQ_NORM_BUFFER_SIZE 119
#define ZMQ_NORM_SEGMENT_SIZE 120
#define ZMQ_NORM_BLOCK_SIZE 121
#define ZMQ_NORM_NUM_PARITY 122
#define ZMQ_NORM_NUM_AUTOPARITY 123
#define ZMQ_NORM_PUSH 124
/* DRAFT ZMQ_NORM_MODE options */
#define ZMQ_NORM_FIXED 0
#define ZMQ_NORM_CC 1
#define ZMQ_NORM_CCL 2
#define ZMQ_NORM_CCE 3
#define ZMQ_NORM_CCE_ECNONLY 4
/* DRAFT ZMQ_RECONNECT_STOP options */
#define ZMQ_RECONNECT_STOP_CONN_REFUSED 0x1
#define ZMQ_RECONNECT_STOP_HANDSHAKE_FAILED 0x2
#define ZMQ_RECONNECT_STOP_AFTER_DISCONNECT 0x4
/* DRAFT Context options */
#define ZMQ_ZERO_COPY_RECV 10
/* DRAFT Context methods. */
ZMQ_EXPORT int zmq_ctx_set_ext (void *context_,
int option_,
const void *optval_,
size_t optvallen_);
ZMQ_EXPORT int zmq_ctx_get_ext (void *context_,
int option_,
void *optval_,
size_t *optvallen_);
/* DRAFT Socket methods. */
ZMQ_EXPORT int zmq_join (void *s, const char *group);
ZMQ_EXPORT int zmq_leave (void *s, const char *group);
ZMQ_EXPORT uint32_t zmq_connect_peer (void *s_, const char *addr_);
/* DRAFT Msg methods. */
ZMQ_EXPORT int zmq_msg_set_routing_id (zmq_msg_t *msg, uint32_t routing_id);
ZMQ_EXPORT uint32_t zmq_msg_routing_id (zmq_msg_t *msg);
ZMQ_EXPORT int zmq_msg_set_group (zmq_msg_t *msg, const char *group);
ZMQ_EXPORT const char *zmq_msg_group (zmq_msg_t *msg);
ZMQ_EXPORT int
zmq_msg_init_buffer (zmq_msg_t *msg_, const void *buf_, size_t size_);
/* DRAFT Msg property names. */
#define ZMQ_MSG_PROPERTY_ROUTING_ID "Routing-Id"
#define ZMQ_MSG_PROPERTY_SOCKET_TYPE "Socket-Type"
#define ZMQ_MSG_PROPERTY_USER_ID "User-Id"
#define ZMQ_MSG_PROPERTY_PEER_ADDRESS "Peer-Address"
/* Router notify options */
#define ZMQ_NOTIFY_CONNECT 1
#define ZMQ_NOTIFY_DISCONNECT 2
/******************************************************************************/
/* Poller polling on sockets,fd and thread-safe sockets */
/******************************************************************************/
#define ZMQ_HAVE_POLLER
typedef struct zmq_poller_event_t
{
void *socket;
zmq_fd_t fd;
void *user_data;
short events;
} zmq_poller_event_t;
ZMQ_EXPORT void *zmq_poller_new (void);
ZMQ_EXPORT int zmq_poller_destroy (void **poller_p);
ZMQ_EXPORT int zmq_poller_size (void *poller);
ZMQ_EXPORT int
zmq_poller_add (void *poller, void *socket, void *user_data, short events);
ZMQ_EXPORT int zmq_poller_modify (void *poller, void *socket, short events);
ZMQ_EXPORT int zmq_poller_remove (void *poller, void *socket);
ZMQ_EXPORT int
zmq_poller_wait (void *poller, zmq_poller_event_t *event, long timeout);
ZMQ_EXPORT int zmq_poller_wait_all (void *poller,
zmq_poller_event_t *events,
int n_events,
long timeout);
ZMQ_EXPORT int zmq_poller_fd (void *poller, zmq_fd_t *fd);
ZMQ_EXPORT int
zmq_poller_add_fd (void *poller, zmq_fd_t fd, void *user_data, short events);
ZMQ_EXPORT int zmq_poller_modify_fd (void *poller, zmq_fd_t fd, short events);
ZMQ_EXPORT int zmq_poller_remove_fd (void *poller, zmq_fd_t fd);
ZMQ_EXPORT int zmq_socket_get_peer_state (void *socket,
const void *routing_id,
size_t routing_id_size);
/* DRAFT Socket monitoring events */
#define ZMQ_EVENT_PIPES_STATS 0x10000
#define ZMQ_CURRENT_EVENT_VERSION 1
#define ZMQ_CURRENT_EVENT_VERSION_DRAFT 2
#define ZMQ_EVENT_ALL_V1 ZMQ_EVENT_ALL
#define ZMQ_EVENT_ALL_V2 ZMQ_EVENT_ALL_V1 | ZMQ_EVENT_PIPES_STATS
ZMQ_EXPORT int zmq_socket_monitor_versioned (
void *s_, const char *addr_, uint64_t events_, int event_version_, int type_);
ZMQ_EXPORT int zmq_socket_monitor_pipes_stats (void *s);
#if !defined _WIN32
ZMQ_EXPORT int zmq_ppoll (zmq_pollitem_t *items_,
int nitems_,
long timeout_,
const sigset_t *sigmask_);
#else
// Windows has no sigset_t
ZMQ_EXPORT int zmq_ppoll (zmq_pollitem_t *items_,
int nitems_,
long timeout_,
const void *sigmask_);
#endif
#endif // ZMQ_BUILD_DRAFT_API
#undef ZMQ_EXPORT
#ifdef __cplusplus
}
#endif
#endif
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