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<h1>luaposix 33.3.0</h1>
<ul>
<li><a href="../index.html">Index</a></li>
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<h2>Examples</h2>
<ul class="$(kind=='Topics' and '' or 'nowrap'">
<li><a href="../examples/curses.lua.html">curses.lua</a></li>
<li><a href="../examples/dir.lua.html">dir.lua</a></li>
<li><a href="../examples/fork.lua.html">fork.lua</a></li>
<li><a href="../examples/fork2.lua.html">fork2.lua</a></li>
<li><a href="../examples/getopt.lua.html">getopt.lua</a></li>
<li><a href="../examples/glob.lua.html">glob.lua</a></li>
<li><a href="../examples/limit.lua.html">limit.lua</a></li>
<li><a href="../examples/lock.lua.html">lock.lua</a></li>
<li><a href="../examples/netlink-uevent.lua.html">netlink-uevent.lua</a></li>
<li><a href="../examples/ping.lua.html">ping.lua</a></li>
<li><a href="../examples/poll.lua.html">poll.lua</a></li>
<li><a href="../examples/rt_sched.lua.html">rt_sched.lua</a></li>
<li><a href="../examples/signal.lua.html">signal.lua</a></li>
<li><strong>socket.lua</strong></li>
<li><a href="../examples/termios.lua.html">termios.lua</a></li>
<li><a href="../examples/tree.lua.html">tree.lua</a></li>
</ul>
<h2>Modules</h2>
<ul class="$(kind=='Topics' and '' or 'nowrap'">
<li><a href="../modules/posix.html">posix</a></li>
<li><a href="../modules/posix.ctype.html">posix.ctype</a></li>
<li><a href="../modules/posix.curses.html">posix.curses</a></li>
<li><a href="../modules/posix.dirent.html">posix.dirent</a></li>
<li><a href="../modules/posix.errno.html">posix.errno</a></li>
<li><a href="../modules/posix.fcntl.html">posix.fcntl</a></li>
<li><a href="../modules/posix.fnmatch.html">posix.fnmatch</a></li>
<li><a href="../modules/posix.getopt.html">posix.getopt</a></li>
<li><a href="../modules/posix.glob.html">posix.glob</a></li>
<li><a href="../modules/posix.grp.html">posix.grp</a></li>
<li><a href="../modules/posix.libgen.html">posix.libgen</a></li>
<li><a href="../modules/posix.poll.html">posix.poll</a></li>
<li><a href="../modules/posix.pwd.html">posix.pwd</a></li>
<li><a href="../modules/posix.sched.html">posix.sched</a></li>
<li><a href="../modules/posix.signal.html">posix.signal</a></li>
<li><a href="../modules/posix.stdio.html">posix.stdio</a></li>
<li><a href="../modules/posix.stdlib.html">posix.stdlib</a></li>
<li><a href="../modules/posix.sys.msg.html">posix.sys.msg</a></li>
<li><a href="../modules/posix.sys.resource.html">posix.sys.resource</a></li>
<li><a href="../modules/posix.sys.socket.html">posix.sys.socket</a></li>
<li><a href="../modules/posix.sys.stat.html">posix.sys.stat</a></li>
<li><a href="../modules/posix.sys.statvfs.html">posix.sys.statvfs</a></li>
<li><a href="../modules/posix.sys.time.html">posix.sys.time</a></li>
<li><a href="../modules/posix.sys.times.html">posix.sys.times</a></li>
<li><a href="../modules/posix.sys.utsname.html">posix.sys.utsname</a></li>
<li><a href="../modules/posix.sys.wait.html">posix.sys.wait</a></li>
<li><a href="../modules/posix.syslog.html">posix.syslog</a></li>
<li><a href="../modules/posix.termio.html">posix.termio</a></li>
<li><a href="../modules/posix.time.html">posix.time</a></li>
<li><a href="../modules/posix.unistd.html">posix.unistd</a></li>
<li><a href="../modules/posix.utime.html">posix.utime</a></li>
</ul>
<h2>Classes</h2>
<ul class="$(kind=='Topics' and '' or 'nowrap'">
<li><a href="../classes/posix.curses.chstr.html">posix.curses.chstr</a></li>
<li><a href="../classes/posix.curses.window.html">posix.curses.window</a></li>
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<div id="content">
<h2>socket.lua</h2>
<pre>
<span class="keyword">local</span> sig = <span class="global">require</span> <span class="string">"posix.signal"</span>
<span class="keyword">local</span> sock = <span class="global">require</span> <span class="string">"posix.sys.socket"</span>
<span class="keyword">local</span> unistd = <span class="global">require</span> <span class="string">"posix.unistd"</span>
sig.signal (sig.SIGPIPE, <span class="keyword">function</span> () <span class="global">print</span> <span class="string">"pipe"</span> <span class="keyword">end</span>)
<span class="comment">-- Get Lua web site title
</span><span class="keyword">local</span> r, err = sock.getaddrinfo (<span class="string">"www.lua.org"</span>, <span class="string">"http"</span>, { family = sock.AF_INET, socktype = sock.SOCK_STREAM })
<span class="keyword">if</span> <span class="keyword">not</span> r <span class="keyword">then</span> error (err) <span class="keyword">end</span>
<span class="keyword">local</span> fd = sock.socket (sock.AF_INET, sock.SOCK_STREAM, <span class="number">0</span>)
<span class="keyword">local</span> ok, err, e = sock.connect (fd, r[<span class="number">1</span>])
<span class="keyword">local</span> sa = sock.getsockname(fd)
<span class="global">print</span>(<span class="string">"Local socket bound to "</span> .. sa.addr .. <span class="string">":"</span> .. <span class="global">tostring</span>(sa.port))
<span class="keyword">if</span> err <span class="keyword">then</span> error (err) <span class="keyword">end</span>
sock.send (fd, <span class="string">"GET / HTTP/1.0\r\nHost: www.lua.org\r\n\r\n"</span>)
<span class="keyword">local</span> data = {}
<span class="keyword">while</span> <span class="keyword">true</span> <span class="keyword">do</span>
<span class="keyword">local</span> b = sock.recv (fd, <span class="number">1024</span>)
<span class="keyword">if</span> <span class="keyword">not</span> b <span class="keyword">or</span> #b == <span class="number">0</span> <span class="keyword">then</span>
<span class="keyword">break</span>
<span class="keyword">end</span>
<span class="global">table</span>.insert (data, b)
<span class="keyword">end</span>
unistd.close (fd)
data = <span class="global">table</span>.concat (data)
<span class="global">print</span> (data:match <span class="string">"<TITLE>(.+)</TITLE>"</span>)
<span class="comment">-- Loopback UDP test, IPV4 and IPV6
</span><span class="keyword">local</span> fd = sock.socket (sock.AF_INET6, sock.SOCK_DGRAM, <span class="number">0</span>)
sock.bind (fd, { family = sock.AF_INET6, addr = <span class="string">"::"</span>, port = <span class="number">9999</span> })
sock.sendto (fd, <span class="string">"Test ipv4"</span>, { family = sock.AF_INET, addr = <span class="string">"127.0.0.1"</span>, port = <span class="number">9999</span> })
sock.sendto (fd, <span class="string">"Test ipv6"</span>, { family = sock.AF_INET6, addr = <span class="string">"::"</span>, port = <span class="number">9999</span> })
<span class="keyword">for</span> i = <span class="number">1</span>, <span class="number">2</span> <span class="keyword">do</span>
<span class="keyword">local</span> ok, r = sock.recvfrom (fd, <span class="number">1024</span>)
<span class="keyword">if</span> ok <span class="keyword">then</span>
<span class="global">print</span> (ok, r.addr, r.port)
<span class="keyword">else</span>
<span class="global">print</span> (ok, r)
<span class="keyword">end</span>
<span class="keyword">end</span>
unistd.close (fd)
<span class="global">os</span>.exit (<span class="number">0</span>)</pre>
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<i style="float:right;">Last updated 2015-03-01 09:06:02 </i>
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