summaryrefslogtreecommitdiff
path: root/static/netbsd/man4/udp.4 4.html
diff options
context:
space:
mode:
authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:59:05 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:59:05 -0400
commit1f19f33e45791ea59aed048796fc68672c6723a5 (patch)
tree54625fba89e91d1c2177801ec635e8528bba937f /static/netbsd/man4/udp.4 4.html
parentac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (diff)
docs: Removed Precompiled HTML
Diffstat (limited to 'static/netbsd/man4/udp.4 4.html')
-rw-r--r--static/netbsd/man4/udp.4 4.html112
1 files changed, 0 insertions, 112 deletions
diff --git a/static/netbsd/man4/udp.4 4.html b/static/netbsd/man4/udp.4 4.html
deleted file mode 100644
index 71e6b56a..00000000
--- a/static/netbsd/man4/udp.4 4.html
+++ /dev/null
@@ -1,112 +0,0 @@
-<table class="head">
- <tr>
- <td class="head-ltitle">UDP(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">UDP(4)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">udp</code> &#x2014; <span class="Nd">Internet
- User Datagram Protocol</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp"><code class="In">#include
- &lt;<a class="In">sys/socket.h</a>&gt;</code>
- <br/>
- <code class="In">#include &lt;<a class="In">netinet/in.h</a>&gt;</code></p>
-<p class="Pp"><var class="Ft">int</var>
- <br/>
- <code class="Fn">socket</code>(<var class="Fa" style="white-space: nowrap;">AF_INET</var>,
- <var class="Fa" style="white-space: nowrap;">SOCK_DGRAM</var>,
- <var class="Fa" style="white-space: nowrap;">0</var>);</p>
-<p class="Pp"><var class="Ft">int</var>
- <br/>
- <code class="Fn">socket</code>(<var class="Fa" style="white-space: nowrap;">AF_INET6</var>,
- <var class="Fa" style="white-space: nowrap;">SOCK_DGRAM</var>,
- <var class="Fa" style="white-space: nowrap;">0</var>);</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">UDP is a simple, unreliable datagram protocol which is used to
- support the <code class="Dv">SOCK_DGRAM</code> abstraction for the Internet
- protocol family. UDP sockets are connectionless, and are normally used with
- the <a class="Xr">sendto(2)</a> and <a class="Xr">recvfrom(2)</a> calls,
- though the <a class="Xr">connect(2)</a> call may also be used to fix the
- destination for future packets (in which case the <a class="Xr">recv(2)</a>
- or <a class="Xr">read(2)</a> and <a class="Xr">send(2)</a> or
- <a class="Xr">write(2)</a> system calls may be used).</p>
-<p class="Pp">UDP address formats are identical to those used by TCP. In
- particular UDP provides a port identifier in addition to the normal Internet
- address format. Note that the UDP port space is separate from the TCP port
- space (i.e. a UDP port may not be &#x201C;connected&#x201D; to a TCP port).
- In addition broadcast packets may be sent (assuming the underlying network
- supports this) by using a reserved &#x201C;broadcast address&#x201D;; this
- address is network interface dependent.</p>
-<p class="Pp">There are two UDP-level
- <a class="Xr">setsockopt(2)</a>/<a class="Xr">getsockopt(2)</a> options.
- <code class="Dv">UDP_OPTIONS</code> may be used to change the default
- behavior of the socket. For example:</p>
-<div class="Bd Pp Li">
-<pre>setsockopt(s, IPPROTO_UDP, UDP_OPTIONS, NULL, 0);</pre>
-</div>
-<p class="Pp">The <code class="Dv">UDP_ENCAP</code> option can be used to
- encapsulate ESP packets in UDP. There is one valid encapsulation option:
- UDP_ENCAP_ESPINUDP from RFC3948 defined in
- <code class="In">&lt;<a class="In">netinet/udp.h</a>&gt;</code>.</p>
-<p class="Pp">Options at the IP transport level may be used with UDP; see
- <a class="Xr">ip(4)</a> or <a class="Xr">ip6(4)</a>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1>
-<p class="Pp">A socket operation may fail with one of the following errors
- returned:</p>
-<dl class="Bl-tag">
- <dt>[<code class="Er">EADDRINUSE</code>]</dt>
- <dd>when an attempt is made to create a socket with a port which has already
- been allocated;</dd>
- <dt>[<code class="Er">EADDRNOTAVAIL</code>]</dt>
- <dd>when an attempt is made to create a socket with a network address for
- which no network interface exists.</dd>
- <dt>[<code class="Er">EISCONN</code>]</dt>
- <dd>when trying to establish a connection on a socket which already has one,
- or when trying to send a datagram with the destination address specified
- and the socket is already connected;</dd>
- <dt>[<code class="Er">ENOBUFS</code>]</dt>
- <dd>when the system runs out of memory for an internal data structure;</dd>
- <dt>[<code class="Er">ENOTCONN</code>]</dt>
- <dd>when trying to send a datagram, but no destination address is specified,
- and the socket hasn't been connected;</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">getsockopt(2)</a>, <a class="Xr">recv(2)</a>,
- <a class="Xr">send(2)</a>, <a class="Xr">socket(2)</a>,
- <a class="Xr">inet(4)</a>, <a class="Xr">inet6(4)</a>,
- <a class="Xr">intro(4)</a>, <a class="Xr">ip(4)</a>,
- <a class="Xr">ip6(4)</a>, <a class="Xr">rfc6056(7)</a>,
- <a class="Xr">sysctl(7)</a></p>
-<p class="Pp"><cite class="Rs"><span class="RsT">User Datagram Protocol</span>,
- <span class="RsR">RFC</span>, <span class="RsN">768</span>,
- <span class="RsD">August 28, 1980</span>.</cite></p>
-<p class="Pp"><cite class="Rs"><span class="RsT">Requirements for Internet Hosts
- &#x2014; Communication Layers</span>, <span class="RsR">RFC</span>,
- <span class="RsN">1122</span>, <span class="RsD">October
- 1989</span>.</cite></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-<p class="Pp">The <code class="Nm">udp</code> protocol appeared in
- <span class="Ux">4.2BSD</span>.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">May 31, 2018</td>
- <td class="foot-os">NetBSD 10.1</td>
- </tr>
-</table>