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158 lines
5.0 KiB
158 lines
5.0 KiB
6 years ago
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'\" t
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.\" Title: zmonitor
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.\" Author: [see the "AUTHORS" section]
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.\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/>
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.\" Date: 12/31/2016
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.\" Manual: CZMQ Manual
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.\" Source: CZMQ 4.0.2
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.\" Language: English
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.\"
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.TH "ZMONITOR" "3" "12/31/2016" "CZMQ 4\&.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 \- socket event monitor
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.SH "SYNOPSIS"
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.sp
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.nf
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// Create new zmonitor actor instance to monitor a zsock_t socket:
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//
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// zactor_t *monitor = zactor_new (zmonitor, mysocket);
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//
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// Destroy zmonitor instance\&.
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//
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// zactor_destroy (&monitor);
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//
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// Enable verbose logging of commands and activity\&.
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//
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// zstr_send (monitor, "VERBOSE");
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//
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// Listen to monitor event type (zero or types, ending in NULL):
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// zstr_sendx (monitor, "LISTEN", type, \&.\&.\&., NULL);
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//
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// Events:
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// CONNECTED
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// CONNECT_DELAYED
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// CONNECT_RETRIED
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// LISTENING
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// BIND_FAILED
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// ACCEPTED
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// ACCEPT_FAILED
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// CLOSED
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// CLOSE_FAILED
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// DISCONNECTED
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// MONITOR_STOPPED
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// ALL
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//
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// Start monitor; after this, any further LISTEN commands are ignored\&.
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//
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// zstr_send (monitor, "START");
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// zsock_wait (monitor);
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//
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// Receive next monitor event:
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//
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// zmsg_t *msg = zmsg_recv (monitor);
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//
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// This is the zmonitor constructor as a zactor_fn; the argument can be
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// a zactor_t, zsock_t, or libzmq void * socket:
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CZMQ_EXPORT void
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zmonitor (zsock_t *pipe, void *sock);
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// Selftest
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CZMQ_EXPORT void
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zmonitor_test (bool verbose);
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Please add \*(Aq@interface\*(Aq section in \*(Aq\&./\&.\&./src/zmonitor\&.c\*(Aq\&.
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.fi
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.SH "DESCRIPTION"
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.sp
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The zmonitor actor 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\&.
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.sp
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This class wraps the ZMQ socket monitor API, see zmq_socket_monitor for details\&. Works on all versions of libzmq from 3\&.2 onwards\&. This class replaces zproxy_v2, and is meant for applications that use the CZMQ v3 API (meaning, zsock)\&.
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.SH "EXAMPLE"
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.PP
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\fBFrom zmonitor_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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zsock_t *client = zsock_new (ZMQ_DEALER);
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assert (client);
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zactor_t *clientmon = zactor_new (zmonitor, client);
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assert (clientmon);
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if (verbose)
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zstr_sendx (clientmon, "VERBOSE", NULL);
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zstr_sendx (clientmon, "LISTEN", "LISTENING", "ACCEPTED", NULL);
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zstr_sendx (clientmon, "START", NULL);
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zsock_wait (clientmon);
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zsock_t *server = zsock_new (ZMQ_DEALER);
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assert (server);
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zactor_t *servermon = zactor_new (zmonitor, server);
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assert (servermon);
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if (verbose)
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zstr_sendx (servermon, "VERBOSE", NULL);
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zstr_sendx (servermon, "LISTEN", "CONNECTED", "DISCONNECTED", NULL);
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zstr_sendx (servermon, "START", NULL);
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zsock_wait (servermon);
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// Allow a brief time for the message to get there\&.\&.\&.
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zmq_poll (NULL, 0, 200);
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// Check client is now listening
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int port_nbr = zsock_bind (client, "tcp://127\&.0\&.0\&.1:*");
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assert (port_nbr != \-1);
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s_assert_event (clientmon, "LISTENING");
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// Check server connected to client
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zsock_connect (server, "tcp://127\&.0\&.0\&.1:%d", port_nbr);
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s_assert_event (servermon, "CONNECTED");
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// Check client accepted connection
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s_assert_event (clientmon, "ACCEPTED");
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zactor_destroy (&clientmon);
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zactor_destroy (&servermon);
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zsock_destroy (&client);
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zsock_destroy (&server);
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#endif
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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) the 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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