<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 1.5.4">
<title>nn_device(3)</title>
<style>
/* Derived from the Riak documentation theme developed by Basho Technologies, Inc. | CC BY 3.0 License | http://docs.basho.org */
@import url(https://fonts.googleapis.com/css?family=Titillium+Web:400,700);
@import url(https://fonts.googleapis.com/css?family=Noticia+Text:400,400italic);
/*! normalize.css v2.1.2 | MIT License | git.io/normalize */
/* ========================================================================== HTML5 display definitions ========================================================================== */
/** Correct `block` display not defined in IE 8/9. */
article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary { display: block; }

/** Correct `inline-block` display not defined in IE 8/9. */
audio, canvas, video { display: inline-block; }

/** Prevent modern browsers from displaying `audio` without controls. Remove excess height in iOS 5 devices. */
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; }

/* ========================================================================== Links ========================================================================== */
/** Remove the gray background color from active links in IE 10. */
a { background: transparent; }

/** 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; }

/* ========================================================================== Typography ========================================================================== */
/** Address variable `h1` font-size and margin within `section` and `article` contexts in Firefox 4+, Safari 5, and Chrome. */
h1 { font-size: 2em; margin: 0.67em 0; }

/** Address styling not present in IE 8/9, Safari 5, and Chrome. */
abbr[title] { border-bottom: 1px dotted; }

/** 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. */
mark { background: #ff0; color: #000; }

/** Correct font family set oddly in Safari 5 and Chrome. */
code, kbd, pre, samp { font-family: monospace, serif; font-size: 1em; }

/** Improve readability of pre-formatted text in all browsers. */
pre { white-space: pre-wrap; }

/** Set consistent quote types. */
q { quotes: "\201C" "\201D" "\2018" "\2019"; }

/** Address inconsistent and variable font size in all browsers. */
small { font-size: 80%; }

/** Prevent `sub` and `sup` affecting `line-height` in all browsers. */
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }

sup { top: -0.5em; }

sub { bottom: -0.25em; }

/* ========================================================================== Embedded content ========================================================================== */
/** Remove border when inside `a` element in IE 8/9. */
img { border: 0; }

/** Correct overflow displayed oddly in IE 9. */
svg:not(:root) { overflow: hidden; }

/* ========================================================================== Figures ========================================================================== */
/** Address margin not present in IE 8/9 and Safari 5. */
figure { margin: 0; }

/* ========================================================================== Forms ========================================================================== */
/** Define consistent border, margin, and padding. */
fieldset { border: 1px solid #c0c0c0; margin: 0 2px; padding: 0.35em 0.625em 0.75em; }

/** 1. Correct `color` not being inherited in IE 8/9. 2. Remove padding so people aren't caught out if they zero out fieldsets. */
legend { border: 0; /* 1 */ padding: 0; /* 2 */ }

/** 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. */
button, input, select, textarea { font-family: inherit; /* 1 */ font-size: 100%; /* 2 */ margin: 0; /* 3 */ }

/** Address Firefox 4+ setting `line-height` on `input` using `!important` in the UA stylesheet. */
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 */ }

/** Re-set default cursor for disabled elements. */
button[disabled], html input[disabled] { cursor: default; }

/** 1. Address box sizing set to `content-box` in IE 8/9. 2. Remove excess padding in IE 8/9. */
input[type="checkbox"], input[type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ }

/** 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome. 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome (include `-moz` to future-proof). */
input[type="search"] { -webkit-appearance: textfield; /* 1 */ -moz-box-sizing: content-box; -webkit-box-sizing: content-box; /* 2 */ box-sizing: content-box; }

/** Remove inner padding and search cancel button in Safari 5 and Chrome on OS X. */
input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }

/** 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. */
textarea { overflow: auto; /* 1 */ vertical-align: top; /* 2 */ }

/* ========================================================================== Tables ========================================================================== */
/** Remove most spacing between table cells. */
table { border-collapse: collapse; border-spacing: 0; }

meta.foundation-mq-small { font-family: "only screen and (min-width: 768px)"; width: 768px; }

meta.foundation-mq-medium { font-family: "only screen and (min-width:1280px)"; width: 1280px; }

meta.foundation-mq-large { font-family: "only screen and (min-width:1440px)"; width: 1440px; }

*, *:before, *:after { -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; }

html, body { font-size: 100%; }

body { background: #fff; color: #222; padding: 0; margin: 0; font-family: "Helvetica Neue", "Helvetica", Helvetica, Arial, sans-serif; font-weight: normal; font-style: normal; line-height: 1; position: relative; cursor: auto; }

a:hover { cursor: pointer; }

img, object, embed { max-width: 100%; height: auto; }

object, embed { height: 100%; }

img { -ms-interpolation-mode: bicubic; }

#map_canvas img, #map_canvas embed, #map_canvas object, .map_canvas img, .map_canvas embed, .map_canvas object { max-width: none !important; }

.left { float: left !important; }

.right { float: right !important; }

.text-left { text-align: left !important; }

.text-right { text-align: right !important; }

.text-center { text-align: center !important; }

.text-justify { text-align: justify !important; }

.hide { display: none; }

.antialiased, body { -webkit-font-smoothing: antialiased; }

img { display: inline-block; vertical-align: middle; }

textarea { height: auto; min-height: 50px; }

select { width: 100%; }

object, svg { display: inline-block; vertical-align: middle; }

.center { margin-left: auto; margin-right: auto; }

.spread { width: 100%; }

p.lead, .paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p { font-size: 1.21875em; line-height: 1.6; }

.subheader, .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 { line-height: 1.4; color: #3c3d3f; font-weight: 300; margin-top: 0.2em; margin-bottom: 0.5em; }

/* Typography resets */
div, dl, dt, dd, ul, ol, li, h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6, pre, form, p, blockquote, th, td { margin: 0; padding: 0; direction: ltr; }

/* Default Link Styles */
a { color: #2984A9; text-decoration: underline; line-height: inherit; }
a:hover, a:focus { color: #FAA94C; }
a img { border: none; }

/* Default paragraph styles */
p { font-family: inherit; font-weight: normal; font-size: 1em; line-height: 1.5; margin-bottom: 0.9375em; text-rendering: geometricPrecision; }
p aside { font-size: 0.875em; line-height: 1.35; font-style: italic; }

/* Default header styles */
h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { font-family: "Titillium Web", Verdana, Arial, sans-serif; font-weight: normal; font-style: normal; color: #616366; text-rendering: geometricPrecision; margin-top: 0.5em; margin-bottom: 0.5em; line-height: 1.2125em; }
h1 small, h2 small, h3 small, #toctitle small, .sidebarblock > .content > .title small, h4 small, h5 small, h6 small { font-size: 60%; color: #aeb0b2; line-height: 0; }

h1 { font-size: 2.125em; }

h2 { font-size: 1.6875em; }

h3, #toctitle, .sidebarblock > .content > .title { font-size: 1.375em; }

h4 { font-size: 1.125em; }

h5 { font-size: 1.125em; }

h6 { font-size: 1em; }

hr { border: solid #ddd; border-width: 1px 0 0; clear: both; margin: 1.25em 0 1.1875em; height: 0; }

/* Helpful Typography Defaults */
em, i { font-style: italic; line-height: inherit; }

strong, b { font-weight: bold; line-height: inherit; }

small { font-size: 60%; line-height: inherit; }

code { font-family: monospace, serif; font-weight: normal; color: #515151; }

/* Lists */
ul, ol, dl { font-size: 1em; line-height: 1.5; margin-bottom: 0.9375em; list-style-position: outside; font-family: inherit; }

ul, ol { margin-left: 1.5em; }
ul.no-bullet, ol.no-bullet { margin-left: 1.5em; }

/* Unordered Lists */
ul li ul, ul li ol { margin-left: 1.25em; margin-bottom: 0; font-size: 1em; /* Override nested font-size change */ }
ul.square li ul, ul.circle li ul, ul.disc li ul { list-style: inherit; }
ul.square { list-style-type: square; }
ul.circle { list-style-type: circle; }
ul.disc { list-style-type: disc; }
ul.no-bullet { list-style: none; }

/* Ordered Lists */
ol li ul, ol li ol { margin-left: 1.25em; margin-bottom: 0; }

/* Definition Lists */
dl dt { margin-bottom: 0.3125em; font-weight: bold; }
dl dd { margin-bottom: 1.25em; }

/* Abbreviations */
abbr, acronym { text-transform: uppercase; font-size: 90%; color: #515151; border-bottom: 1px dotted #ddd; cursor: help; }

abbr { text-transform: none; }

/* Blockquotes */
blockquote { margin: 0 0 0.9375em; padding: 0.5625em 1.25em 0 1.1875em; border-left: 1px solid #ddd; }
blockquote cite { display: block; font-size: inherit; color: #484a4c; }
blockquote cite:before { content: "\2014 \0020"; }
blockquote cite a, blockquote cite a:visited { color: #484a4c; }

blockquote, blockquote p { line-height: 1.5; color: #616366; }

/* Microformats */
.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #ddd; padding: 0.625em 0.75em; }
.vcard li { margin: 0; display: block; }
.vcard .fn { font-weight: bold; font-size: 0.9375em; }

.vevent .summary { font-weight: bold; }
.vevent abbr { cursor: auto; text-decoration: none; font-weight: bold; border: none; padding: 0 0.0625em; }

@media only screen and (min-width: 768px) { h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }
  h1 { font-size: 2.75em; }
  h2 { font-size: 2.3125em; }
  h3, #toctitle, .sidebarblock > .content > .title { font-size: 1.6875em; }
  h4 { font-size: 1.4375em; } }
/* Tables */
table { background: #f1f1f1; margin-bottom: 1.25em; border: solid 5px white; }
table thead, table tfoot { background: #dfdfdf; font-weight: bold; }
table thead tr th, table thead tr td, table tfoot tr th, table tfoot tr td { padding: 0.5em 0.625em 0.625em; font-size: inherit; color: #222; text-align: left; }
table tr th, table tr td { padding: 0.5625em 0.625em; font-size: inherit; color: #222; }
table tr.even, table tr.alt, table tr:nth-of-type(even) { background: #dfdfdf; }
table thead tr th, table tfoot tr th, table tbody tr td, table tr td, table tfoot tr td { display: table-cell; line-height: 1.5; }

body { tab-size: 4; }

h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }

.clearfix:before, .clearfix:after, .float-group:before, .float-group:after { content: " "; display: table; }
.clearfix:after, .float-group:after { clear: both; }

*:not(pre) > code { font-size: 0.9em; font-style: normal !important; letter-spacing: 0; padding: 0 3px; background-color: #dfdfdf; border: 1px solid #c9c9c9; -webkit-border-radius: 4px; border-radius: 4px; line-height: inherit; }

pre, pre > code { line-height: 1.6; color: inherit; font-family: monospace, serif; font-weight: normal; }

.keyseq { color: #848484; }

kbd { font-family: monospace, serif; display: inline-block; color: #515151; font-size: 0.65em; line-height: 1.45; background-color: #f7f7f7; border: 1px solid #ccc; -webkit-border-radius: 3px; border-radius: 3px; -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; margin: 0 0.15em; padding: 0.2em 0.5em; vertical-align: middle; position: relative; top: -0.1em; white-space: nowrap; }

.keyseq kbd:first-child { margin-left: 0; }

.keyseq kbd:last-child { margin-right: 0; }

.menuseq, .menu { color: #383838; }

b.button:before, b.button:after { position: relative; top: -1px; font-weight: normal; }

b.button:before { content: "["; padding: 0 3px 0 2px; }

b.button:after { content: "]"; padding: 0 2px 0 3px; }

p a > code:hover { color: #444444; }

#header, #content, #footnotes, #footer { width: 100%; margin-left: auto; margin-right: auto; margin-top: 0; margin-bottom: 0; max-width: 62.5em; *zoom: 1; position: relative; padding-left: 0.9375em; padding-right: 0.9375em; }
#header:before, #header:after, #content:before, #content:after, #footnotes:before, #footnotes:after, #footer:before, #footer:after { content: " "; display: table; }
#header:after, #content:after, #footnotes:after, #footer:after { clear: both; }

#content { margin-top: 1.25em; }

#content:before { content: none; }

#header > h1:first-child { color: #616366; margin-top: 2.25rem; margin-bottom: 0; }
#header > h1:first-child + #toc { margin-top: 8px; border-top: 1px solid #ddd; }
#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #ddd; padding-bottom: 8px; }
#header .details { border-bottom: 1px solid #ddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #484a4c; display: -ms-flexbox; display: -webkit-flex; display: flex; -ms-flex-flow: row wrap; -webkit-flex-flow: row wrap; flex-flow: row wrap; }
#header .details span:first-child { margin-left: -0.125em; }
#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; }

#toc { border-bottom: 1px dashed #ccc; padding-bottom: 0.5em; }
#toc > ul { margin-left: 0.125em; }
#toc ul.sectlevel0 > li > a { font-style: italic; }
#toc ul.sectlevel0 ul.sectlevel1 { margin: 0.5em 0; }
#toc ul { font-family: "Titillium Web", Verdana, Arial, sans-serif; list-style-type: none; }
#toc li { line-height: 1.3334; margin-top: 0.3334em; }
#toc a { text-decoration: none; }
#toc a:active { text-decoration: underline; }

#toctitle { color: #3c3d3f; font-size: 1.2em; }

@media only screen and (min-width: 768px) { #toctitle { font-size: 1.375em; }
  body.toc2 { padding-left: 15em; padding-right: 0; }
  #toc.toc2 { margin-top: 0 !important; background-color: #f2f2f2; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #ccc; border-top-width: 0 !important; border-bottom-width: 0 !important; z-index: 1000; padding: 1.25em 1em; height: 100%; overflow: auto; }
  #toc.toc2 #toctitle { margin-top: 0; margin-bottom: 0.8rem; font-size: 1.2em; }
  #toc.toc2 > ul { font-size: 0.9em; margin-bottom: 0; }
  #toc.toc2 ul ul { margin-left: 0; padding-left: 1em; }
  #toc.toc2 ul.sectlevel0 ul.sectlevel1 { padding-left: 0; margin-top: 0.5em; margin-bottom: 0.5em; }
  body.toc2.toc-right { padding-left: 0; padding-right: 15em; }
  body.toc2.toc-right #toc.toc2 { border-right-width: 0; border-left: 1px solid #ccc; left: auto; right: 0; } }
@media only screen and (min-width: 1280px) { body.toc2 { padding-left: 20em; padding-right: 0; }
  #toc.toc2 { width: 20em; }
  #toc.toc2 #toctitle { font-size: 1.375em; }
  #toc.toc2 > ul { font-size: 0.95em; }
  #toc.toc2 ul ul { padding-left: 1.25em; }
  body.toc2.toc-right { padding-left: 0; padding-right: 20em; } }
#content #toc { 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; }
#content #toc > :first-child { margin-top: 0; }
#content #toc > :last-child { margin-bottom: 0; }

#footer { max-width: 100%; background-color: #515151; padding: 1.25em; }

#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; }

#content h1 > a.anchor, h2 > a.anchor, h3 > a.anchor, #toctitle > a.anchor, .sidebarblock > .content > .title > a.anchor, h4 > a.anchor, h5 > a.anchor, h6 > a.anchor { position: absolute; z-index: 1001; width: 1.5ex; margin-left: -1.5ex; display: block; text-decoration: none !important; visibility: hidden; text-align: center; font-weight: normal; }
#content h1 > a.anchor:before, h2 > a.anchor:before, h3 > a.anchor:before, #toctitle > a.anchor:before, .sidebarblock > .content > .title > a.anchor:before, h4 > a.anchor:before, h5 > a.anchor:before, h6 > a.anchor:before { content: "\00A7"; font-size: 0.85em; display: block; padding-top: 0.1em; }
#content h1:hover > a.anchor, #content h1 > a.anchor:hover, h2:hover > a.anchor, h2 > a.anchor:hover, h3:hover > a.anchor, #toctitle:hover > a.anchor, .sidebarblock > .content > .title:hover > a.anchor, h3 > a.anchor:hover, #toctitle > a.anchor:hover, .sidebarblock > .content > .title > a.anchor:hover, h4:hover > a.anchor, h4 > a.anchor:hover, h5:hover > a.anchor, h5 > a.anchor:hover, h6:hover > a.anchor, h6 > a.anchor:hover { visibility: visible; }
#content h1 > a.link, h2 > a.link, h3 > a.link, #toctitle > a.link, .sidebarblock > .content > .title > a.link, h4 > a.link, h5 > a.link, h6 > a.link { color: #616366; text-decoration: none; }
#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; }
.sidebarblock > :last-child { margin-bottom: 0; }
.sidebarblock > .content > .title { color: #3c3d3f; margin-top: 0; }

.exampleblock > .content > :last-child > :last-child, .exampleblock > .content .olist > ol > li:last-child > :last-child, .exampleblock > .content .ulist > ul > li:last-child > :last-child, .exampleblock > .content .qlist > ol > li:last-child > :last-child, .sidebarblock > .content > :last-child > :last-child, .sidebarblock > .content .olist > ol > li:last-child > :last-child, .sidebarblock > .content .ulist > ul > li:last-child > :last-child, .sidebarblock > .content .qlist > ol > li:last-child > :last-child { margin-bottom: 0; }

.literalblock pre, .listingblock pre:not(.highlight), .listingblock pre[class="highlight"], .listingblock pre[class^="highlight "], .listingblock pre.CodeRay, .listingblock pre.prettyprint { background: url('../images/riak/pre-bg.jpg'); }
.sidebarblock .literalblock pre, .sidebarblock .listingblock pre:not(.highlight), .sidebarblock .listingblock pre[class="highlight"], .sidebarblock .listingblock pre[class^="highlight "], .sidebarblock .listingblock pre.CodeRay, .sidebarblock .listingblock pre.prettyprint { background: #f2f1f1; }

.literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { border: 0 0 1px 0 solid #f0f0f0; -webkit-border-radius: 4px; border-radius: 4px; word-wrap: break-word; padding: 15px; font-size: 0.8125em; }
.literalblock pre.nowrap, .literalblock pre[class].nowrap, .listingblock pre.nowrap, .listingblock pre[class].nowrap { overflow-x: auto; white-space: pre; word-wrap: normal; }
@media only screen and (min-width: 768px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 0.90625em; } }
@media only screen and (min-width: 1280px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 1em; } }

.literalblock.output pre { color: url('../images/riak/pre-bg.jpg'); background-color: inherit; }

.listingblock pre.highlightjs { padding: 0; }
.listingblock pre.highlightjs > code { padding: 15px; -webkit-border-radius: 4px; border-radius: 4px; }

.listingblock > .content { position: relative; }

.listingblock code[data-lang]:before { display: none; content: attr(data-lang); position: absolute; font-size: 0.75em; top: 0.425rem; right: 0.5rem; line-height: 1; text-transform: uppercase; color: #999; }

.listingblock:hover code[data-lang]:before { display: block; }

.listingblock.terminal pre .command:before { content: attr(data-prompt); padding-right: 0.5em; color: #999; }

.listingblock.terminal pre .command:not([data-prompt]):before { content: "$"; }

table.pyhltable { border-collapse: separate; border: 0; margin-bottom: 0; background: none; }

table.pyhltable td { vertical-align: top; padding-top: 0; padding-bottom: 0; line-height: 1.6; }

table.pyhltable td.code { padding-left: .75em; padding-right: 0; }

pre.pygments .lineno, table.pyhltable td:not(.code) { color: #999; padding-left: 0; padding-right: .5em; border-right: 1px solid #ddd; }

pre.pygments .lineno { display: inline-block; margin-right: .25em; }

table.pyhltable .linenodiv { background: none !important; padding-right: 0 !important; }

.quoteblock { margin: 0 1em 0.9375em 1.5em; display: table; }
.quoteblock > .title { margin-left: -1.5em; margin-bottom: 0.75em; }
.quoteblock blockquote, .quoteblock blockquote p { color: #616366; font-size: 1.15rem; line-height: 1.75; word-spacing: 0.1em; letter-spacing: 0; font-style: italic; text-align: justify; }
.quoteblock blockquote { margin: 0; padding: 0; border: 0; }
.quoteblock blockquote:before { content: "\201c"; float: left; font-size: 2.75em; font-weight: bold; line-height: 0.6em; margin-left: -0.6em; color: #3c3d3f; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1); }
.quoteblock blockquote > .paragraph:last-child p { margin-bottom: 0; }
.quoteblock .attribution { margin-top: 0.5em; margin-right: 0.5ex; text-align: right; }
.quoteblock .quoteblock { margin-left: 0; margin-right: 0; padding: 0.5em 0; border-left: 3px solid #484a4c; }
.quoteblock .quoteblock blockquote { padding: 0 0 0 0.75em; }
.quoteblock .quoteblock blockquote:before { display: none; }

.verseblock { margin: 0 1em 0.9375em 1em; }
.verseblock pre { font-family: "Open Sans", "DejaVu Sans", sans; font-size: 1.15rem; color: #616366; font-weight: 300; text-rendering: optimizeLegibility; }
.verseblock pre strong { font-weight: 400; }
.verseblock .attribution { margin-top: 1.25rem; margin-left: 0.5ex; }

.quoteblock .attribution, .verseblock .attribution { font-size: inherit; line-height: 1.45; font-style: italic; }
.quoteblock .attribution br, .verseblock .attribution br { display: none; }
.quoteblock .attribution cite, .verseblock .attribution cite { display: block; letter-spacing: -0.025em; color: #484a4c; }

.quoteblock.abstract { margin: 0 0 0.9375em 0; display: block; }
.quoteblock.abstract blockquote, .quoteblock.abstract blockquote p { text-align: left; word-spacing: 0; }
.quoteblock.abstract blockquote:before, .quoteblock.abstract blockquote p:first-of-type:before { display: none; }

table.tableblock { max-width: 100%; border-collapse: separate; }
table.tableblock td > .paragraph:last-child p > p:last-child, table.tableblock th > p:last-child, table.tableblock td > p:last-child { margin-bottom: 0; }

table.tableblock, th.tableblock, td.tableblock { border: 0 solid white; }

table.grid-all th.tableblock, table.grid-all td.tableblock { border-width: 0 5px 5px 0; }

table.grid-all tfoot > tr > th.tableblock, table.grid-all tfoot > tr > td.tableblock { border-width: 5px 5px 0 0; }

table.grid-cols th.tableblock, table.grid-cols td.tableblock { border-width: 0 5px 0 0; }

table.grid-all * > tr > .tableblock:last-child, table.grid-cols * > tr > .tableblock:last-child { border-right-width: 0; }

table.grid-rows th.tableblock, table.grid-rows td.tableblock { border-width: 0 0 5px 0; }

table.grid-all tbody > tr:last-child > th.tableblock, table.grid-all tbody > tr:last-child > td.tableblock, table.grid-all thead:last-child > tr > th.tableblock, table.grid-rows tbody > tr:last-child > th.tableblock, table.grid-rows tbody > tr:last-child > td.tableblock, table.grid-rows thead:last-child > tr > th.tableblock { border-bottom-width: 0; }

table.grid-rows tfoot > tr > th.tableblock, table.grid-rows tfoot > tr > td.tableblock { border-width: 5px 0 0 0; }

table.frame-all { border-width: 5px; }

table.frame-sides { border-width: 0 5px; }

table.frame-topbot { border-width: 5px 0; }

th.halign-left, td.halign-left { text-align: left; }

th.halign-right, td.halign-right { text-align: right; }

th.halign-center, td.halign-center { text-align: center; }

th.valign-top, td.valign-top { vertical-align: top; }

th.valign-bottom, td.valign-bottom { vertical-align: bottom; }

th.valign-middle, td.valign-middle { vertical-align: middle; }

table thead th, table tfoot th { font-weight: bold; }

tbody tr th { display: table-cell; line-height: 1.5; background: #dfdfdf; }

tbody tr th, tbody tr th p, tfoot tr th, tfoot tr th p { color: #222; font-weight: bold; }

p.tableblock > code:only-child { background: none; padding: 0; }

p.tableblock { font-size: 1em; }

td > div.verse { white-space: pre; }

ol { margin-left: 1.75em; }

ul li ol { margin-left: 1.5em; }

dl dd { margin-left: 1.125em; }

dl dd:last-child, dl dd:last-child > :last-child { margin-bottom: 0; }

ol > li p, ul > li p, ul dd, ol dd, .olist .olist, .ulist .ulist, .ulist .olist, .olist .ulist { margin-bottom: 0.46875em; }

ul.unstyled, ol.unnumbered, ul.checklist, ul.none { list-style-type: none; }

ul.unstyled, ol.unnumbered, ul.checklist { margin-left: 0.625em; }

ul.checklist li > p:first-child > .fa-square-o:first-child, ul.checklist li > p:first-child > .fa-check-square-o:first-child { width: 1em; font-size: 0.85em; }

ul.checklist li > p:first-child > input[type="checkbox"]:first-child { width: 1em; position: relative; top: 1px; }

ul.inline { margin: 0 auto 0.46875em auto; margin-left: -1.375em; margin-right: 0; padding: 0; list-style: none; overflow: hidden; }
ul.inline > li { list-style: none; float: left; margin-left: 1.375em; display: block; }
ul.inline > li > * { display: block; }

.unstyled dl dt { font-weight: normal; font-style: normal; }

ol.arabic { list-style-type: decimal; }

ol.decimal { list-style-type: decimal-leading-zero; }

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; }

ol.lowergreek { list-style-type: lower-greek; }

.hdlist > table, .colist > table { border: 0; background: none; }
.hdlist > table > tbody > tr, .colist > table > tbody > tr { background: none; }

td.hdlist1, td.hdlist2 { vertical-align: top; padding: 0 0.625em; }

td.hdlist1 { font-weight: bold; padding-bottom: 0.9375em; }

.literalblock + .colist, .listingblock + .colist { margin-top: -0.5em; }

.colist > table tr > td:first-of-type { padding: 0 0.75em; line-height: 1; }
.colist > table tr > td:last-of-type { padding: 0.25em 0; }

.thumb, .th { line-height: 0; display: inline-block; border: solid 4px #fff; -webkit-box-shadow: 0 0 0 1px #ddd; box-shadow: 0 0 0 1px #ddd; }

.imageblock.left, .imageblock[style*="float: left"] { margin: 0.25em 0.625em 1.25em 0; }
.imageblock.right, .imageblock[style*="float: right"] { margin: 0.25em 0 1.25em 0.625em; }
.imageblock > .title { margin-bottom: 0; }
.imageblock.thumb, .imageblock.th { border-width: 6px; }
.imageblock.thumb > .title, .imageblock.th > .title { padding: 0 0.125em; }

.image.left, .image.right { margin-top: 0.25em; margin-bottom: 0.25em; display: inline-block; line-height: 0; }
.image.left { margin-right: 0.625em; }
.image.right { margin-left: 0.625em; }

a.image { text-decoration: none; display: inline-block; }
a.image object { pointer-events: none; }

sup.footnote, sup.footnoteref { font-size: 0.875em; position: static; vertical-align: super; }
sup.footnote a, sup.footnoteref a { text-decoration: none; }
sup.footnote a:active, sup.footnoteref a:active { text-decoration: underline; }

#footnotes { padding-top: 0.75em; padding-bottom: 0.75em; margin-bottom: 0.625em; }
#footnotes hr { width: 20%; min-width: 6.25em; margin: -0.25em 0 0.75em 0; border-width: 1px 0 0 0; }
#footnotes .footnote { padding: 0 0.375em 0 0.225em; line-height: 1.3334; font-size: 0.875em; margin-left: 1.2em; text-indent: -1.05em; margin-bottom: 0.2em; }
#footnotes .footnote a:first-of-type { font-weight: bold; text-decoration: none; }
#footnotes .footnote:last-of-type { margin-bottom: 0; }
#content #footnotes { margin-top: -0.625em; margin-bottom: 0; padding: 0.75em 0; }

.gist .file-data > table { border: 0; background: #fff; width: 100%; margin-bottom: 0; }
.gist .file-data > table td.line-data { width: 99%; }

div.unbreakable { page-break-inside: avoid; }

.big { font-size: larger; }

.small { font-size: smaller; }

.underline { text-decoration: underline; }

.overline { text-decoration: overline; }

.line-through { text-decoration: line-through; }

.aqua { color: #00bfbf; }

.aqua-background { background-color: #00fafa; }

.black { color: black; }

.black-background { background-color: black; }

.blue { color: #0000bf; }

.blue-background { background-color: #0000fa; }

.fuchsia { color: #bf00bf; }

.fuchsia-background { background-color: #fa00fa; }

.gray { color: #606060; }

.gray-background { background-color: #7d7d7d; }

.green { color: #006000; }

.green-background { background-color: #007d00; }

.lime { color: #00bf00; }

.lime-background { background-color: #00fa00; }

.maroon { color: #600000; }

.maroon-background { background-color: #7d0000; }

.navy { color: #000060; }

.navy-background { background-color: #00007d; }

.olive { color: #606000; }

.olive-background { background-color: #7d7d00; }

.purple { color: #600060; }

.purple-background { background-color: #7d007d; }

.red { color: #bf0000; }

.red-background { background-color: #fa0000; }

.silver { color: #909090; }

.silver-background { background-color: #bcbcbc; }

.teal { color: #006060; }

.teal-background { background-color: #007d7d; }

.white { color: #bfbfbf; }

.white-background { background-color: #fafafa; }

.yellow { color: #bfbf00; }

.yellow-background { background-color: #fafa00; }

span.icon > .fa { cursor: default; }

.admonitionblock td.icon [class^="fa icon-"] { font-size: 2.5em; text-shadow: 0 0 8px #fff, 1px 1px 2px rgba(0, 0, 0, 0.5); cursor: default; }
.admonitionblock td.icon .icon-note:before { content: "\f05a"; color: #1f637f; }
.admonitionblock td.icon .icon-tip:before { content: "\f0eb"; text-shadow: 1px 1px 2px rgba(155, 155, 0, 0.8); color: #111; }
.admonitionblock td.icon .icon-warning:before { content: "\f071"; color: #bf6900; }
.admonitionblock td.icon .icon-caution:before { content: "\f06d"; color: #bf3400; }
.admonitionblock td.icon .icon-important:before { content: "\f06a"; color: #bf0000; }

.conum[data-value] { display: inline-block; color: #fff !important; background-color: #515151; -webkit-border-radius: 100px; border-radius: 100px; text-align: center; font-size: 0.75em; width: 1.67em; height: 1.67em; line-height: 1.67em; font-family: "Open Sans", "DejaVu Sans", sans-serif; font-style: normal; font-weight: bold; }
.conum[data-value] * { color: #fff !important; }
.conum[data-value] + b { display: none; }
.conum[data-value]:after { content: attr(data-value); }
pre .conum[data-value] { position: relative; top: -0.125em; }

b.conum * { color: inherit !important; }

.conum:not([data-value]):empty { display: none; }

body { background-image: url('../images/riak/body-bg.jpg'); }

::selection { background-color: #fcc07f; color: #fff; }

#header h1 { font-weight: bold; }

.literalblock pre, .listingblock pre { background: url('../images/riak/pre-bg.jpg'); -moz-box-shadow: inset 0 1px 4px #AEB9B6; -webkit-box-shadow: inset 0 1px 4px #AEB9B6; box-shadow: inset 0 1px 4px #AEB9B6; -webkit-border-radius: 5px; border-radius: 5px; }

#content ul > li { list-style-type: square; }

p > em { font-family: 'Noticia Text', serif; font-weight: 400; font-size: 95%; }

.admonitionblock > table { width: 100%; background-image: url('../images/riak/info-bg.jpg'); border-collapse: separate; border-spacing: 0; -webkit-border-radius: 5px; border-radius: 5px; border: 1px solid #9EC6DF; }
.admonitionblock > table td.icon { padding: 15px; }
.admonitionblock > table td.icon .icon-tip:before { text-shadow: 0 0 20px white, 1px 1px 2px rgba(155, 155, 0, 0.8); }
.admonitionblock > table td.content { font-family: 'Noticia Text', italic; font-size: 90%; font-style: italic; border: 0; padding: 15px; }

.admonitionblock .literalblock > .content > pre, .admonitionblock .listingblock > .content > pre { background-image: url('../images/riak/info-bg.jpg'); }

.exampleblock > .content { background-color: transparent; border-color: #c9c9c9; }

.sidebarblock { background-image: url('../images/riak/sidebar-bg.jpg'); -webkit-border-radius: 5px; border-radius: 5px; }
.sidebarblock > .content > .title { color: #f1f1f1; text-shadow: 0px 2px 2px black; font-size: 1.25em; font-weight: bold; }
.sidebarblock > .content ul, .sidebarblock > .content p { color: #f1f1f1; text-shadow: 0px 1px 1px black; }
.sidebarblock > .content .title { color: #dfdfdf; }
.sidebarblock > .content code { color: #333; }
.sidebarblock > .content a { color: #60B5D8; }
.sidebarblock > .content a:hover { color: #FAA94C; }
.sidebarblock > .content .admonitionblock p, .sidebarblock > .content .admonitionblock ul { text-shadow: none; color: #616366; }

table.tableblock.grid-all { -webkit-border-radius: 0; border-radius: 0; -moz-box-shadow: 0 1px 3px #999; -webkit-box-shadow: 0 1px 3px #999; box-shadow: 0 1px 3px #999; }

#footer { background-image: url('../images/riak/footer-bg.jpg'); padding: 25px 0; }

#footer-text { color: #fff; text-shadow: 1px 1px 1px #333; font-size: 80%; text-align: center; }

</style>
</head>
<body class="manpage toc2 toc-left">
<div id="header">
<h1>nn_device(3) 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></li>
<li><a href="#_return_value">RETURN VALUE</a></li>
<li><a href="#_errors">ERRORS</a></li>
<li><a href="#_example">EXAMPLE</a></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_device - start a device</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>int nn_device (int <em>s1</em>, int <em>s2</em>);</strong></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Starts a device to forward messages between two sockets. If both sockets are
valid, <em>nn_device</em> function loops and sends any messages received from <em>s1</em> to
<em>s2</em> and vice versa. If only one socket is valid and the other is negative,
<em>nn_device</em> works in a "loopback" mode&#8201;&#8212;&#8201;it loops and sends any messages
received from the socket back to itself.</p>
</div>
<div class="paragraph">
<p>To break the loop and make <em>nn_device</em> function exit use the
<a href="nn_term.3.html">nn_term(3)</a> function.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_return_value">RETURN VALUE</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The function loops until it hits an error. In such a case it returns -1
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>EBADF</strong></dt>
<dd>
<p>One of the provided sockets is invalid.</p>
</dd>
<dt class="hdlist1"><strong>EINVAL</strong></dt>
<dd>
<p>Either one of the socket is not an AF_SP_RAW socket; or the two sockets don&#8217;t
belong to the same protocol; or the directionality of the sockets doesn&#8217;t fit
(e.g. attempt to join two SINK sockets to form a device).</p>
</dd>
<dt class="hdlist1"><strong>EINTR</strong></dt>
<dd>
<p>The operation was interrupted by delivery of a signal.</p>
</dd>
<dt class="hdlist1"><strong>ETERM</strong></dt>
<dd>
<p>The library is terminating.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_example">EXAMPLE</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre>int s1 = nn_socket (AF_SP_RAW, NN_REQ);
nn_bind (s1, "tcp://127.0.0.1:5555");
int s2 = nn_socket (AF_SP_RAW, NN_REP);
nn_bind (s2, "tcp://127.0.0.1:5556");
nn_device (s1, s2);</pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="nn_socket.3.html">nn_socket(3)</a>
<a href="nn_term.3.html">nn_term(3)</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 11:01:52 PDT
</div>
</div>
</body>
</html>