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135 lines
4.7 KiB
135 lines
4.7 KiB
6 years ago
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'\" t
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.\" Title: zmonitor_v2
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.\" Author: [see the "AUTHORS" section]
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.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
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.\" Date: 09/14/2016
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.\" Manual: CZMQ Manual
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.\" Source: CZMQ 3.0.2
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.\" Language: English
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.\"
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.TH "ZMONITOR_V2" "3" "09/14/2016" "CZMQ 3\&.0\&.2" "CZMQ Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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zmonitor_v2 \- socket event monitor (deprecated)
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.SH "SYNOPSIS"
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.sp
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.nf
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// This code needs backporting to work with ZMQ v3\&.2
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#if (ZMQ_VERSION_MAJOR == 4)
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// Create a new socket monitor
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CZMQ_EXPORT zmonitor_t *
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zmonitor_new (zctx_t *ctx, void *socket, int events);
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// Destroy a socket monitor
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CZMQ_EXPORT void
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zmonitor_destroy (zmonitor_t **self_p);
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// Receive a status message from the monitor; if no message arrives within
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// 500 msec, or the call was interrupted, returns NULL\&.
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CZMQ_EXPORT zmsg_t *
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zmonitor_recv (zmonitor_t *self);
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// Get the ZeroMQ socket, for polling
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CZMQ_EXPORT void *
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zmonitor_socket (zmonitor_t *self);
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// Enable verbose tracing of commands and activity
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CZMQ_EXPORT void
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zmonitor_set_verbose (zmonitor_t *self, bool verbose);
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#endif // ZeroMQ 4\&.0 or later
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// Self test of this class
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CZMQ_EXPORT void
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zmonitor_v2_test (bool verbose);
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.fi
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.SH "DESCRIPTION"
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.sp
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The zmonitor class provides an API for obtaining socket events such as connected, listen, disconnected, etc\&. Socket events are only available for sockets connecting or bound to ipc:// and tcp:// endpoints\&. This class wraps the ZMQ socket monitor API, see zmq_socket_monitor for details\&. Currently this class requires libzmq v4\&.0 or later and is empty on older versions of libzmq\&.
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.sp
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This class is deprecated in CZMQ v3; it works together with zctx, zsocket, and other deprecated V2 classes\&. New applications should use the V3 zmonitor interface, based on zactor, together with the zsock class for sockets\&.
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.SH "EXAMPLE"
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.PP
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\fBFrom zmonitor_v2_test method\fR.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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zctx_t *ctx = zctx_new ();
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assert (ctx);
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bool result;
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void *sink = zsocket_new (ctx, ZMQ_PULL);
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assert (sink);
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zmonitor_t *sinkmon = zmonitor_new (ctx,
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sink, ZMQ_EVENT_LISTENING | ZMQ_EVENT_ACCEPTED);
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assert (sinkmon);
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zmonitor_set_verbose (sinkmon, verbose);
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// Check sink is now listening
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int port_nbr = zsocket_bind (sink, "tcp://127\&.0\&.0\&.1:*");
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assert (port_nbr != \-1);
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result = s_check_event (sinkmon, ZMQ_EVENT_LISTENING);
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assert (result);
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void *source = zsocket_new (ctx, ZMQ_PUSH);
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assert (source);
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zmonitor_t *sourcemon = zmonitor_new (ctx,
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source, ZMQ_EVENT_CONNECTED | ZMQ_EVENT_DISCONNECTED);
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assert (sourcemon);
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zmonitor_set_verbose (sourcemon, verbose);
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zsocket_connect (source, "tcp://127\&.0\&.0\&.1:%d", port_nbr);
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// Check source connected to sink
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result = s_check_event (sourcemon, ZMQ_EVENT_CONNECTED);
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assert (result);
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// Check sink accepted connection
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result = s_check_event (sinkmon, ZMQ_EVENT_ACCEPTED);
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assert (result);
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zmonitor_destroy (&sinkmon);
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zmonitor_destroy (&sourcemon);
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zctx_destroy (&ctx);
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.fi
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.if n \{\
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.RE
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.\}
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.sp
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.SH "AUTHORS"
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.sp
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The czmq manual was written by the authors in the AUTHORS file\&.
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.SH "RESOURCES"
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.sp
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Main web site: \m[blue]\fB\%\fR\m[]
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.sp
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Report bugs to the email <\m[blue]\fBzeromq\-dev@lists\&.zeromq\&.org\fR\m[]\&\s-2\u[1]\d\s+2>
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.SH "COPYRIGHT"
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.sp
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Copyright (c) 1991\-2012 iMatix Corporation \-\- http://www\&.imatix\&.com Copyright other contributors as noted in the AUTHORS file\&. This file is part of CZMQ, the high\-level C binding for 0MQ: http://czmq\&.zeromq\&.org This Source Code Form is subject to the terms of the Mozilla Public License, v\&. 2\&.0\&. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla\&.org/MPL/2\&.0/\&. LICENSE included with the czmq distribution\&.
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.SH "NOTES"
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.IP " 1." 4
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zeromq-dev@lists.zeromq.org
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.RS 4
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\%mailto:zeromq-dev@lists.zeromq.org
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.RE
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