a3ed46f2c3
git-svn-id: svn://10.65.10.50/branches/R_10_00@23289 c028cbd2-c16b-5b4b-a496-9718f37d4682
838 lines
22 KiB
HTML
838 lines
22 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
|
|
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
|
|
<meta name="generator" content="AsciiDoc 8.6.3" />
|
|
<title>zmq_ctx_socket_monitor(3)</title>
|
|
<style type="text/css">
|
|
/* Sans-serif font. */
|
|
h1, h2, h3, h4, h5, h6,
|
|
div.title, caption.title,
|
|
thead, p.table.header,
|
|
div#toctitle,
|
|
span#author, span#revnumber, span#revdate, span#revremark,
|
|
div#footer {
|
|
font-family: Arial,Helvetica,sans-serif;
|
|
}
|
|
|
|
/* Serif font. */
|
|
div.sectionbody {
|
|
font-family: Georgia,"Times New Roman",Times,serif;
|
|
}
|
|
|
|
/* Monospace font. */
|
|
tt {
|
|
font-size: inherit;
|
|
}
|
|
|
|
body {
|
|
margin: 1em 5% 1em 5%;
|
|
}
|
|
|
|
a {
|
|
color: blue;
|
|
text-decoration: underline;
|
|
}
|
|
a:visited {
|
|
color: fuchsia;
|
|
}
|
|
|
|
em {
|
|
font-style: italic;
|
|
color: navy;
|
|
}
|
|
|
|
strong {
|
|
font-weight: bold;
|
|
color: #083194;
|
|
}
|
|
|
|
tt {
|
|
font-size: inherit;
|
|
color: navy;
|
|
}
|
|
|
|
h1, h2, h3, h4, h5, h6 {
|
|
color: #527bbd;
|
|
margin-top: 1.2em;
|
|
margin-bottom: 0.5em;
|
|
line-height: 1.3;
|
|
}
|
|
|
|
h1, h2, h3 {
|
|
border-bottom: 2px solid silver;
|
|
}
|
|
h2 {
|
|
padding-top: 0.5em;
|
|
}
|
|
h3 {
|
|
float: left;
|
|
}
|
|
h3 + * {
|
|
clear: left;
|
|
}
|
|
|
|
div.sectionbody {
|
|
margin-left: 0;
|
|
}
|
|
|
|
hr {
|
|
border: 1px solid silver;
|
|
}
|
|
|
|
p {
|
|
margin-top: 0.5em;
|
|
margin-bottom: 0.5em;
|
|
}
|
|
|
|
ul, ol, li > p {
|
|
margin-top: 0;
|
|
}
|
|
ul > li { color: #aaa; }
|
|
ul > li > * { color: black; }
|
|
|
|
pre {
|
|
padding: 0;
|
|
margin: 0;
|
|
}
|
|
|
|
span#author {
|
|
color: #527bbd;
|
|
font-weight: bold;
|
|
font-size: 1.1em;
|
|
}
|
|
span#email {
|
|
}
|
|
span#revnumber, span#revdate, span#revremark {
|
|
}
|
|
|
|
div#footer {
|
|
font-size: small;
|
|
border-top: 2px solid silver;
|
|
padding-top: 0.5em;
|
|
margin-top: 4.0em;
|
|
}
|
|
div#footer-text {
|
|
float: left;
|
|
padding-bottom: 0.5em;
|
|
}
|
|
div#footer-badges {
|
|
float: right;
|
|
padding-bottom: 0.5em;
|
|
}
|
|
|
|
div#preamble {
|
|
margin-top: 1.5em;
|
|
margin-bottom: 1.5em;
|
|
}
|
|
div.tableblock, div.imageblock, div.exampleblock, div.verseblock,
|
|
div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
|
|
div.admonitionblock {
|
|
margin-top: 1.0em;
|
|
margin-bottom: 1.5em;
|
|
}
|
|
div.admonitionblock {
|
|
margin-top: 2.0em;
|
|
margin-bottom: 2.0em;
|
|
margin-right: 10%;
|
|
color: #606060;
|
|
}
|
|
|
|
div.content { /* Block element content. */
|
|
padding: 0;
|
|
}
|
|
|
|
/* Block element titles. */
|
|
div.title, caption.title {
|
|
color: #527bbd;
|
|
font-weight: bold;
|
|
text-align: left;
|
|
margin-top: 1.0em;
|
|
margin-bottom: 0.5em;
|
|
}
|
|
div.title + * {
|
|
margin-top: 0;
|
|
}
|
|
|
|
td div.title:first-child {
|
|
margin-top: 0.0em;
|
|
}
|
|
div.content div.title:first-child {
|
|
margin-top: 0.0em;
|
|
}
|
|
div.content + div.title {
|
|
margin-top: 0.0em;
|
|
}
|
|
|
|
div.sidebarblock > div.content {
|
|
background: #ffffee;
|
|
border: 1px solid #dddddd;
|
|
border-left: 4px solid #f0f0f0;
|
|
padding: 0.5em;
|
|
}
|
|
|
|
div.listingblock > div.content {
|
|
border: 1px solid #dddddd;
|
|
border-left: 5px solid #f0f0f0;
|
|
background: #f8f8f8;
|
|
padding: 0.5em;
|
|
}
|
|
|
|
div.quoteblock, div.verseblock {
|
|
padding-left: 1.0em;
|
|
margin-left: 1.0em;
|
|
margin-right: 10%;
|
|
border-left: 5px solid #f0f0f0;
|
|
color: #777777;
|
|
}
|
|
|
|
div.quoteblock > div.attribution {
|
|
padding-top: 0.5em;
|
|
text-align: right;
|
|
}
|
|
|
|
div.verseblock > pre.content {
|
|
font-family: inherit;
|
|
font-size: inherit;
|
|
}
|
|
div.verseblock > div.attribution {
|
|
padding-top: 0.75em;
|
|
text-align: left;
|
|
}
|
|
/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
|
|
div.verseblock + div.attribution {
|
|
text-align: left;
|
|
}
|
|
|
|
div.admonitionblock .icon {
|
|
vertical-align: top;
|
|
font-size: 1.1em;
|
|
font-weight: bold;
|
|
text-decoration: underline;
|
|
color: #527bbd;
|
|
padding-right: 0.5em;
|
|
}
|
|
div.admonitionblock td.content {
|
|
padding-left: 0.5em;
|
|
border-left: 3px solid #dddddd;
|
|
}
|
|
|
|
div.exampleblock > div.content {
|
|
border-left: 3px solid #dddddd;
|
|
padding-left: 0.5em;
|
|
}
|
|
|
|
div.imageblock div.content { padding-left: 0; }
|
|
span.image img { border-style: none; }
|
|
a.image:visited { color: white; }
|
|
|
|
dl {
|
|
margin-top: 0.8em;
|
|
margin-bottom: 0.8em;
|
|
}
|
|
dt {
|
|
margin-top: 0.5em;
|
|
margin-bottom: 0;
|
|
font-style: normal;
|
|
color: navy;
|
|
}
|
|
dd > *:first-child {
|
|
margin-top: 0.1em;
|
|
}
|
|
|
|
ul, ol {
|
|
list-style-position: outside;
|
|
}
|
|
ol.arabic {
|
|
list-style-type: decimal;
|
|
}
|
|
ol.loweralpha {
|
|
list-style-type: lower-alpha;
|
|
}
|
|
ol.upperalpha {
|
|
list-style-type: upper-alpha;
|
|
}
|
|
ol.lowerroman {
|
|
list-style-type: lower-roman;
|
|
}
|
|
ol.upperroman {
|
|
list-style-type: upper-roman;
|
|
}
|
|
|
|
div.compact ul, div.compact ol,
|
|
div.compact p, div.compact p,
|
|
div.compact div, div.compact div {
|
|
margin-top: 0.1em;
|
|
margin-bottom: 0.1em;
|
|
}
|
|
|
|
div.tableblock > table {
|
|
border: 3px solid #527bbd;
|
|
}
|
|
thead, p.table.header {
|
|
font-weight: bold;
|
|
color: #527bbd;
|
|
}
|
|
tfoot {
|
|
font-weight: bold;
|
|
}
|
|
td > div.verse {
|
|
white-space: pre;
|
|
}
|
|
p.table {
|
|
margin-top: 0;
|
|
}
|
|
/* Because the table frame attribute is overriden by CSS in most browsers. */
|
|
div.tableblock > table[frame="void"] {
|
|
border-style: none;
|
|
}
|
|
div.tableblock > table[frame="hsides"] {
|
|
border-left-style: none;
|
|
border-right-style: none;
|
|
}
|
|
div.tableblock > table[frame="vsides"] {
|
|
border-top-style: none;
|
|
border-bottom-style: none;
|
|
}
|
|
|
|
|
|
div.hdlist {
|
|
margin-top: 0.8em;
|
|
margin-bottom: 0.8em;
|
|
}
|
|
div.hdlist tr {
|
|
padding-bottom: 15px;
|
|
}
|
|
dt.hdlist1.strong, td.hdlist1.strong {
|
|
font-weight: bold;
|
|
}
|
|
td.hdlist1 {
|
|
vertical-align: top;
|
|
font-style: normal;
|
|
padding-right: 0.8em;
|
|
color: navy;
|
|
}
|
|
td.hdlist2 {
|
|
vertical-align: top;
|
|
}
|
|
div.hdlist.compact tr {
|
|
margin: 0;
|
|
padding-bottom: 0;
|
|
}
|
|
|
|
.comment {
|
|
background: yellow;
|
|
}
|
|
|
|
.footnote, .footnoteref {
|
|
font-size: 0.8em;
|
|
}
|
|
|
|
span.footnote, span.footnoteref {
|
|
vertical-align: super;
|
|
}
|
|
|
|
#footnotes {
|
|
margin: 20px 0 20px 0;
|
|
padding: 7px 0 0 0;
|
|
}
|
|
|
|
#footnotes div.footnote {
|
|
margin: 0 0 5px 0;
|
|
}
|
|
|
|
#footnotes hr {
|
|
border: none;
|
|
border-top: 1px solid silver;
|
|
height: 1px;
|
|
text-align: left;
|
|
margin-left: 0;
|
|
width: 20%;
|
|
min-width: 100px;
|
|
}
|
|
|
|
div.colist td {
|
|
padding-right: 0.5em;
|
|
padding-bottom: 0.3em;
|
|
vertical-align: top;
|
|
}
|
|
div.colist td img {
|
|
margin-top: 0.3em;
|
|
}
|
|
|
|
@media print {
|
|
div#footer-badges { display: none; }
|
|
}
|
|
|
|
div#toc {
|
|
margin-bottom: 2.5em;
|
|
}
|
|
|
|
div#toctitle {
|
|
color: #527bbd;
|
|
font-size: 1.1em;
|
|
font-weight: bold;
|
|
margin-top: 1.0em;
|
|
margin-bottom: 0.1em;
|
|
}
|
|
|
|
div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
|
|
margin-top: 0;
|
|
margin-bottom: 0;
|
|
}
|
|
div.toclevel2 {
|
|
margin-left: 2em;
|
|
font-size: 0.9em;
|
|
}
|
|
div.toclevel3 {
|
|
margin-left: 4em;
|
|
font-size: 0.9em;
|
|
}
|
|
div.toclevel4 {
|
|
margin-left: 6em;
|
|
font-size: 0.9em;
|
|
}
|
|
|
|
/* Overrides for manpage documents */
|
|
h1 {
|
|
padding-top: 0.5em;
|
|
padding-bottom: 0.5em;
|
|
border-top: 2px solid silver;
|
|
border-bottom: 2px solid silver;
|
|
}
|
|
h2 {
|
|
border-style: none;
|
|
}
|
|
div.sectionbody {
|
|
margin-left: 5%;
|
|
}
|
|
|
|
@media print {
|
|
div#toc { display: none; }
|
|
}
|
|
|
|
</style>
|
|
<script type="text/javascript">
|
|
/*<+'])');
|
|
// Function that scans the DOM tree for header elements (the DOM2
|
|
// nodeIterator API would be a better technique but not supported by all
|
|
// browsers).
|
|
var iterate = function (el) {
|
|
for (var i = el.firstChild; i != null; i = i.nextSibling) {
|
|
if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
|
|
var mo = re.exec(i.tagName);
|
|
if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
|
|
result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
|
|
}
|
|
iterate(i);
|
|
}
|
|
}
|
|
}
|
|
iterate(el);
|
|
return result;
|
|
}
|
|
|
|
var toc = document.getElementById("toc");
|
|
var entries = tocEntries(document.getElementById("content"), toclevels);
|
|
for (var i = 0; i < entries.length; ++i) {
|
|
var entry = entries[i];
|
|
if (entry.element.id == "")
|
|
entry.element.id = "_toc_" + i;
|
|
var a = document.createElement("a");
|
|
a.href = "#" + entry.element.id;
|
|
a.appendChild(document.createTextNode(entry.text));
|
|
var div = document.createElement("div");
|
|
div.appendChild(a);
|
|
div.className = "toclevel" + entry.toclevel;
|
|
toc.appendChild(div);
|
|
}
|
|
if (entries.length == 0)
|
|
toc.parentNode.removeChild(toc);
|
|
},
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////
|
|
// Footnotes generator
|
|
/////////////////////////////////////////////////////////////////////
|
|
|
|
/* Based on footnote generation code from:
|
|
* http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
|
|
*/
|
|
|
|
footnotes: function () {
|
|
var cont = document.getElementById("content");
|
|
var noteholder = document.getElementById("footnotes");
|
|
var spans = cont.getElementsByTagName("span");
|
|
var refs = {};
|
|
var n = 0;
|
|
for (i=0; i<spans.length; i++) {
|
|
if (spans[i].className == "footnote") {
|
|
n++;
|
|
// Use [\s\S] in place of . so multi-line matches work.
|
|
// Because JavaScript has no s (dotall) regex flag.
|
|
note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
|
|
noteholder.innerHTML +=
|
|
"<div class='footnote' id='_footnote_" + n + "'>" +
|
|
"<a href='#_footnoteref_" + n + "' title='Return to text'>" +
|
|
n + "</a>. " + note + "</div>";
|
|
spans[i].innerHTML =
|
|
"[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
|
|
"' title='View footnote' class='footnote'>" + n + "</a>]";
|
|
var id =spans[i].getAttribute("id");
|
|
if (id != null) refs["#"+id] = n;
|
|
}
|
|
}
|
|
if (n == 0)
|
|
noteholder.parentNode.removeChild(noteholder);
|
|
else {
|
|
// Process footnoterefs.
|
|
for (i=0; i<spans.length; i++) {
|
|
if (spans[i].className == "footnoteref") {
|
|
var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
|
|
href = href.match(/#.*/)[0]; // Because IE return full URL.
|
|
n = refs[href];
|
|
spans[i].innerHTML =
|
|
"[<a href='#_footnote_" + n +
|
|
"' title='View footnote' class='footnote'>" + n + "</a>]";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
/*]]>*/
|
|
</script>
|
|
</head>
|
|
<body class="manpage">
|
|
<div id="header">
|
|
<h1>
|
|
zmq_ctx_socket_monitor(3) Manual Page
|
|
</h1>
|
|
<h2>NAME</h2>
|
|
<div class="sectionbody">
|
|
<p>zmq_socket_monitor -
|
|
register a monitoring callback
|
|
</p>
|
|
</div>
|
|
</div>
|
|
<div id="content">
|
|
<div class="sect1">
|
|
<h2 id="_synopsis">SYNOPSIS</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph"><p><strong>int zmq_socket_monitor (void <em>*socket</em>, char * <em>*addr</em>, int <em>events</em>);</strong></p></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_description">DESCRIPTION</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph"><p>The <em>zmq_socket_monitor()</em> function shall spawn a <em>PAIR</em> socket that publishes
|
|
socket state changes (events) over the inproc:// transport to a given endpoint.</p></div>
|
|
<div class="paragraph"><p>Messages consist of 2 Frames, the first containing the event-id and the
|
|
associated value. The second frame holds the affected endpoint as string.</p></div>
|
|
<div class="paragraph"><p>The layout of the first Frame is:
|
|
16 bit event id
|
|
32 bit event value</p></div>
|
|
<div class="paragraph"><p>event id and value are in the native byte order (for the machine the
|
|
application is running on). There is no padding between the fields.</p></div>
|
|
<div class="paragraph"><p>The event value has to be interpreted in the context of the event id.
|
|
See <em>Supported events</em> below for details.</p></div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre><tt>Only connection oriented (tcp and ipc) transports are supported in this initial
|
|
implementation.</tt></pre>
|
|
</div></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_supported_events">Supported events</h2>
|
|
<div class="sectionbody">
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_connected_connection_established">ZMQ_EVENT_CONNECTED: connection established</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_CONNECTED</em> event triggers when a connection has been established
|
|
to a remote peer. This can happen either synchronous or asynchronous.
|
|
Value is the FD of the newly connected socket.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_connect_delayed_synchronous_connect_failed_it_8217_s_being_polled">ZMQ_EVENT_CONNECT_DELAYED: synchronous connect failed, it’s being polled</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_CONNECT_DELAYED</em> event triggers when an immediate connection
|
|
attempt is delayed and its completion is being polled for.
|
|
Value has no meaning.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_connect_retried_asynchronous_connect_reconnection_attempt">ZMQ_EVENT_CONNECT_RETRIED: asynchronous connect / reconnection attempt</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_CONNECT_RETRIED</em> event triggers when a connection attempt
|
|
is being handled by reconnect timer. The reconnect interval’s recomputed
|
|
for each attempt.
|
|
Value is the reconnect interval.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_listening_socket_bound_to_an_address_ready_to_accept_connections">ZMQ_EVENT_LISTENING: socket bound to an address, ready to accept connections</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_LISTENING</em> event triggers when a socket’s successfully bound
|
|
to a an interface.
|
|
Value is the FD of the newly bound socket.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_bind_failed_socket_could_not_bind_to_an_address">ZMQ_EVENT_BIND_FAILED: socket could not bind to an address</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_BIND_FAILED</em> event triggers when a socket could not bind to
|
|
a given interface.
|
|
Value is the errno generated by the bind call.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_accepted_connection_accepted_to_bound_interface">ZMQ_EVENT_ACCEPTED: connection accepted to bound interface</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_ACCEPTED</em> event triggers when a connection from a remote peer
|
|
has been established with a socket’s listen address.
|
|
Value is the FD of the accepted socket.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_accept_failed_could_not_accept_client_connection">ZMQ_EVENT_ACCEPT_FAILED: could not accept client connection</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_ACCEPT_FAILED</em> event triggers when a connection attempt to
|
|
a socket’s bound address fails.
|
|
Value is the errno generated by accept.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_closed_connection_closed">ZMQ_EVENT_CLOSED: connection closed</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_CLOSED</em> event triggers when a connection’s underlying descriptor
|
|
has been closed.
|
|
Value is the former FD of the for the closed socket. FD has been closed already!</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_close_failed_connection_couldn_8217_t_be_closed">ZMQ_EVENT_CLOSE_FAILED: connection couldn’t be closed</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_CLOSE_FAILED</em> event triggers when a descriptor could not be
|
|
released back to the OS. Implementation note: ONLY FOR IPC SOCKETS.
|
|
Value is the errno generated by unlink.</p></div>
|
|
</div>
|
|
<div class="sect2">
|
|
<h3 id="_zmq_event_disconnected_broken_session">ZMQ_EVENT_DISCONNECTED: broken session</h3>
|
|
<div class="paragraph"><p>The <em>ZMQ_EVENT_DISCONNECTED</em> event triggers when the stream engine (tcp and ipc
|
|
specific) detects a corrupted / broken session.
|
|
Value is the FD of the socket.</p></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_return_value">RETURN VALUE</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph"><p>The <em>zmq_socket_monitor()</em> function returns a value of 0 or greater if
|
|
successful. Otherwise it returns <tt>-1</tt> and sets <em>errno</em> to one of the values
|
|
defined below.</p></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_errors">ERRORS</h2>
|
|
<div class="sectionbody">
|
|
<div class="dlist"><dl>
|
|
<dt class="hdlist1">
|
|
<strong>ETERM</strong>
|
|
</dt>
|
|
<dd>
|
|
<p>
|
|
The ØMQ <em>context</em> associated with the specified <em>socket</em> was terminated.
|
|
</p>
|
|
</dd>
|
|
<dt class="hdlist1">
|
|
<strong>EPROTONOSUPPORT</strong>
|
|
</dt>
|
|
<dd>
|
|
<p>
|
|
The requested <em>transport</em> protocol is not supported. Monitor sockets are
|
|
required to use the inproc:// transport.
|
|
</p>
|
|
</dd>
|
|
<dt class="hdlist1">
|
|
<strong>EINVAL</strong>
|
|
</dt>
|
|
<dd>
|
|
<p>
|
|
The endpoint supplied is invalid.
|
|
</p>
|
|
</dd>
|
|
</dl></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_example">EXAMPLE</h2>
|
|
<div class="sectionbody">
|
|
<div class="listingblock">
|
|
<div class="title">Observing a <em>REP</em> socket’s connection state</div>
|
|
<div class="content">
|
|
<pre><tt>#include <stdio.h>
|
|
#include <zmq.h>
|
|
#include <pthread.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
static int read_msg(void* s, zmq_event_t* event, char* ep)
|
|
{
|
|
int rc ;
|
|
zmq_msg_t msg1; // binary part
|
|
zmq_msg_init (&msg1);
|
|
zmq_msg_t msg2; // address part
|
|
zmq_msg_init (&msg2);
|
|
rc = zmq_msg_recv (&msg1, s, 0);
|
|
if (rc == -1 && zmq_errno() == ETERM)
|
|
return 1 ;
|
|
assert (rc != -1);
|
|
assert (zmq_msg_more(&msg1) != 0);
|
|
rc = zmq_msg_recv (&msg2, s, 0);
|
|
if (rc == -1 && zmq_errno() == ETERM)
|
|
return 1;
|
|
assert (rc != -1);
|
|
assert (zmq_msg_more(&msg2) == 0);
|
|
// copy binary data to event struct
|
|
const char* data = (char*)zmq_msg_data(&msg1);
|
|
memcpy(&(event->event), data, sizeof(event->event));
|
|
memcpy(&(event->value), data+sizeof(event->event), sizeof(event->value));
|
|
// copy address part
|
|
const size_t len = zmq_msg_size(&msg2) ;
|
|
ep = memcpy(ep, zmq_msg_data(&msg2), len);
|
|
*(ep + len) = 0 ;
|
|
return 0 ;
|
|
}
|
|
|
|
// REP socket monitor thread
|
|
static void *rep_socket_monitor (void *ctx)
|
|
{
|
|
zmq_event_t event;
|
|
static char addr[1025] ;
|
|
int rc;
|
|
|
|
printf("starting monitor...\n");
|
|
|
|
void *s = zmq_socket (ctx, ZMQ_PAIR);
|
|
assert (s);
|
|
|
|
rc = zmq_connect (s, "inproc://monitor.rep");
|
|
assert (rc == 0);
|
|
while (!read_msg(s, &event, addr)) {
|
|
switch (event.event) {
|
|
case ZMQ_EVENT_LISTENING:
|
|
printf ("listening socket descriptor %d\n", event.value);
|
|
printf ("listening socket address %s\n", addr);
|
|
break;
|
|
case ZMQ_EVENT_ACCEPTED:
|
|
printf ("accepted socket descriptor %d\n", event.value);
|
|
printf ("accepted socket address %s\n", addr);
|
|
break;
|
|
case ZMQ_EVENT_CLOSE_FAILED:
|
|
printf ("socket close failure error code %d\n", event.value);
|
|
printf ("socket address %s\n", addr);
|
|
break;
|
|
case ZMQ_EVENT_CLOSED:
|
|
printf ("closed socket descriptor %d\n", event.value);
|
|
printf ("closed socket address %s\n", addr);
|
|
break;
|
|
case ZMQ_EVENT_DISCONNECTED:
|
|
printf ("disconnected socket descriptor %d\n", event.value);
|
|
printf ("disconnected socket address %s\n", addr);
|
|
break;
|
|
}
|
|
}
|
|
zmq_close (s);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
int main()
|
|
{
|
|
const char* addr = "tcp://127.0.0.1:6666" ;
|
|
pthread_t thread ;
|
|
|
|
// Create the infrastructure
|
|
void *ctx = zmq_init (1);
|
|
assert (ctx);
|
|
|
|
// REP socket
|
|
void* rep = zmq_socket (ctx, ZMQ_REP);
|
|
assert (rep);
|
|
|
|
// REP socket monitor, all events
|
|
int rc = zmq_socket_monitor (rep, "inproc://monitor.rep", ZMQ_EVENT_ALL);
|
|
assert (rc == 0);
|
|
rc = pthread_create (&thread, NULL, rep_socket_monitor, ctx);
|
|
assert (rc == 0);
|
|
|
|
rc = zmq_bind (rep, addr);
|
|
assert (rc == 0);
|
|
|
|
// Allow some time for event detection
|
|
zmq_sleep (1);
|
|
|
|
// Close the REP socket
|
|
rc = zmq_close (rep);
|
|
assert (rc == 0);
|
|
|
|
zmq_term (ctx);
|
|
|
|
return 0 ;
|
|
}</tt></pre>
|
|
</div></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_see_also">SEE ALSO</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph"><p><a href="zmq.html">zmq(7)</a></p></div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_authors">AUTHORS</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph"><p>This page was written by the ØMQ community. To make a change please
|
|
read the ØMQ Contribution Policy at <a href="http://www.zeromq.org/docs:contributing">http://www.zeromq.org/docs:contributing</a>.</p></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div id="footnotes"><hr /></div>
|
|
<div id="footer">
|
|
<div id="footer-text">
|
|
ØMQ 4.0.4<br />
|
|
Last updated 2013-11-13 12:57:50 EST
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|