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/* ========================================================================== HTML5 display definitions ========================================================================== */
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article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary { display: block; }

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audio:not([controls]) { display: none; height: 0; }

/** Address `[hidden]` styling not present in IE 8/9. Hide the `template` element in IE, Safari, and Firefox < 22. */
[hidden], template { display: none; }

script { display: none !important; }

/* ========================================================================== Base ========================================================================== */
/** 1. Set default font family to sans-serif. 2. Prevent iOS text size adjust after orientation change, without disabling user zoom. */
html { font-family: sans-serif; /* 1 */ -ms-text-size-adjust: 100%; /* 2 */ -webkit-text-size-adjust: 100%; /* 2 */ }

/** Remove default margin. */
body { margin: 0; }

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/** Address `outline` inconsistency between Chrome and other browsers. */
a:focus { outline: thin dotted; }

/** Improve readability when focused and also mouse hovered in all browsers. */
a:active, a:hover { outline: 0; }

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/** Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome. */
b, strong { font-weight: bold; }

/** Address styling not present in Safari 5 and Chrome. */
dfn { font-style: italic; }

/** Address differences between Firefox and other browsers. */
hr { -moz-box-sizing: content-box; box-sizing: content-box; height: 0; }

/** Address styling not present in IE 8/9. */
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/** Correct font family set oddly in Safari 5 and Chrome. */
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/** Correct overflow displayed oddly in IE 9. */
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/** 1. Correct `color` not being inherited in IE 8/9. 2. Remove padding so people aren't caught out if they zero out fieldsets. */
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/** 1. Correct font family not being inherited in all browsers. 2. Correct font size not being inherited in all browsers. 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome. */
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button, input { line-height: normal; }

/** Address inconsistent `text-transform` inheritance for `button` and `select`. All other form control elements do not inherit `text-transform` values. Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+. Correct `select` style inheritance in Firefox 4+ and Opera. */
button, select { text-transform: none; }

/** 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio` and `video` controls. 2. Correct inability to style clickable `input` types in iOS. 3. Improve usability and consistency of cursor style between image-type `input` and others. */
button, html input[type="button"], input[type="reset"], input[type="submit"] { -webkit-appearance: button; /* 2 */ cursor: pointer; /* 3 */ }

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/** 1. Address box sizing set to `content-box` in IE 8/9. 2. Remove excess padding in IE 8/9. */
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/** Remove inner padding and search cancel button in Safari 5 and Chrome on OS X. */
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/** Remove inner padding and border in Firefox 4+. */
button::-moz-focus-inner, input::-moz-focus-inner { border: 0; padding: 0; }

/** 1. Remove default vertical scrollbar in IE 8/9. 2. Improve readability and alignment in all browsers. */
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table thead, table tfoot { background: #dfdfdf; font-weight: bold; }
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p a > code:hover { color: #444444; }

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#header .details span.email a { color: #616366; }
#header .details br { display: none; }
#header .details br + span:before { content: "\00a0\2013\00a0"; }
#header .details br + span.author:before { content: "\00a0\22c5\00a0"; color: #616366; }
#header .details br + span#revremark:before { content: "\00a0|\00a0"; }
#header #revnumber { text-transform: capitalize; }
#header #revnumber:after { content: "\00a0"; }

#content > h1:first-child:not([class]) { color: #616366; border-bottom: 1px solid #ddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }

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#toc > ul { margin-left: 0.125em; }
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#toctitle { color: #3c3d3f; font-size: 1.2em; }

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#footer-text { color: #aeaeae; line-height: 1.35; }

.sect1 { padding-bottom: 0.625em; }

@media only screen and (min-width: 768px) { .sect1 { padding-bottom: 1.25em; } }
.sect1 + .sect1 { border-top: 1px dashed #ccc; }

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#content h1 > a.link:hover, h2 > a.link:hover, h3 > a.link:hover, #toctitle > a.link:hover, .sidebarblock > .content > .title > a.link:hover, h4 > a.link:hover, h5 > a.link:hover, h6 > a.link:hover { color: #555659; }

.audioblock, .imageblock, .literalblock, .listingblock, .stemblock, .videoblock { margin-bottom: 1.25em; }

.admonitionblock td.content > .title, .audioblock > .title, .exampleblock > .title, .imageblock > .title, .listingblock > .title, .literalblock > .title, .stemblock > .title, .openblock > .title, .paragraph > .title, .quoteblock > .title, table.tableblock > .title, .verseblock > .title, .videoblock > .title, .dlist > .title, .olist > .title, .ulist > .title, .qlist > .title, .hdlist > .title { text-rendering: geometricPrecision; text-align: left; }

table.tableblock > caption.title { white-space: nowrap; overflow: visible; max-width: 0; }

.paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p { color: #616366; }

table.tableblock #preamble > .sectionbody > .paragraph:first-of-type p { font-size: inherit; }

.admonitionblock > table { border-collapse: separate; border: 0; background: none; width: 100%; }
.admonitionblock > table td.icon { text-align: center; width: 80px; }
.admonitionblock > table td.icon img { max-width: none; }
.admonitionblock > table td.icon .title { font-weight: bold; font-family: "Titillium Web", Verdana, Arial, sans-serif; text-transform: uppercase; }
.admonitionblock > table td.content { padding-left: 1.125em; padding-right: 1.25em; border-left: 1px solid #ddd; color: #484a4c; }
.admonitionblock > table td.content > :last-child > :last-child { margin-bottom: 0; }

.exampleblock > .content { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: #fff; -webkit-border-radius: 4px; border-radius: 4px; }
.exampleblock > .content > :first-child { margin-top: 0; }
.exampleblock > .content > :last-child { margin-bottom: 0; }

.sidebarblock { border-style: solid; border-width: 1px; border-color: #d9d9d9; margin-bottom: 1.25em; padding: 1.25em; background: #f2f2f2; -webkit-border-radius: 4px; border-radius: 4px; }
.sidebarblock > :first-child { margin-top: 0; }
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</head>
<body class="manpage toc2 toc-left">
<div id="header">
<h1>nn_pair(7) Manual Page</h1>
<div id="toc" class="toc2">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#_synopsis">SYNOPSIS</a></li>
<li><a href="#_description">DESCRIPTION</a>
<ul class="sectlevel2">
<li><a href="#_socket_types">Socket Types</a></li>
<li><a href="#_socket_options">Socket Options</a></li>
</ul>
</li>
<li><a href="#_see_also">SEE ALSO</a></li>
<li><a href="#_authors">AUTHORS</a></li>
</ul>
</div>
<h2>NAME</h2>
<div class="sectionbody">
<p>nn_pair - one-to-one scalability protocol</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><strong>#include &lt;nanomsg/nn.h&gt;</strong></p>
</div>
<div class="paragraph">
<p><strong>#include &lt;nanomsg/pair.h&gt;</strong></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Pair protocol is the simplest and least scalable scalability protocol. It allows
scaling by breaking the application in exactly two pieces. For example,
if a monolithic application handles both accounting and agenda of HR department,
it can be split into two applications (accounting vs. HR) that are run on two
separate servers. These applications can then communicate via PAIR sockets.</p>
</div>
<div class="paragraph">
<p>The downside of this protocol is that its scaling properties are very limited.
Splitting the application into two pieces allows to scale the two servers.
To add the third server to the cluster, the application has to be split once
more, say by separating HR functionality into hiring module and salary
computation module. Whenever possible, try to use one of the more scalable
protocols instead.</p>
</div>
<div class="sect2">
<h3 id="_socket_types">Socket Types</h3>
<div class="dlist">
<dl>
<dt class="hdlist1">NN_PAIR</dt>
<dd>
<p>Socket for communication with exactly one peer. Each party can send messages
at any time. If the peer is not available or send buffer is full subsequent
calls to <a href="nn_send.3.html">nn_send(3)</a> will block until it&#8217;s possible to send the
message.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_socket_options">Socket Options</h3>
<div class="paragraph">
<p>No protocol-specific socket options are defined at the moment.</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="nn_bus.7.html">nn_bus(7)</a>
<a href="nn_pubsub.7.html">nn_pubsub(7)</a>
<a href="nn_reqrep.7.html">nn_reqrep(7)</a>
<a href="nn_pipeline.7.html">nn_pipeline(7)</a>
<a href="nn_survey.7.html">nn_survey(7)</a>
<a href="nanomsg.7.html">nanomsg(7)</a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_authors">AUTHORS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="mailto:sustrik@250bpm.com">Martin Sustrik</a></p>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
nanomsg 0.8-beta-21-g327a29b-dirty<br>
Last updated 2016-04-15 11:01:53 PDT
</div>
</div>
</body>
</html>