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401 строка
14 KiB
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<a href="nss-module.html">Package nss</a> ::
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<a href="nss.io-module.html">Module io</a> ::
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Class AddrInfo
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<!-- hide/show private -->
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<!-- ==================== TYPE DESCRIPTION ==================== -->
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<h1 class="epydoc">type AddrInfo</h1><p class="nomargin-top"></p>
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<pre class="base-tree">
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object --+
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<strong class="uidshort">AddrInfo</strong>
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</pre>
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<hr />
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<p>AddrInfo(hostname, family=PR_AF_UNSPEC, flags=PR_AI_ADDRCONFIG)</p>
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<p>An object used to encapsulate network address information for a
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specific host.</p>
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<p>After successful initialization the AddrInfo object will contain
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an ordered sequence of <a href="nss.io.NetworkAddress-class.html" class="link">NetworkAddress</a> objects which may be
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accessed via iteration or indexing. It is suggested you try connecting
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with the each <a href="nss.io.NetworkAddress-class.html" class="link">NetworkAddress</a> object in sequential order until
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one succeeds.</p>
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<p>Example Usage:</p>
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<pre class="rst-literal-block">
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try:
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addr_info = io.AddrInfo(hostname)
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except Exception, e:
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print "ERROR: could not resolve address for %s" % hostname
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return
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for net_addr in addr_info:
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net_addr.port = port
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sock = io.Socket(net_addr.family)
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try:
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sock.connect(net_addr, timeout=io.seconds_to_interval(1))
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return
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except Exception, e:
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pass
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print "ERROR: could not connect to %s at port %d" % (hostname, port)
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</pre>
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<p>Note, the NSPR interface to getaddrinfo() does not provide a way to
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select just IPv6 addresses. The solution is filter them yourself, e.g.:</p>
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<pre class="rst-literal-block">
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for net_addr in addr_info:
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if net_addr.family != io.PR_AF_INET6: continue
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</pre>
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<!-- ==================== INSTANCE METHODS ==================== -->
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<span class="summary-type"> </span>
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</td><td class="summary">
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<td><span class="summary-sig"><a href="nss.io.AddrInfo-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">hostname</span>,
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<span class="summary-sig-arg">family</span>=<span class="summary-sig-default">PR_AF_UNSPEC</span>,
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<span class="summary-sig-arg">flags</span>=<span class="summary-sig-default">PR_AI_ADDRCONFIG</span>)</span><br />
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x.__init__(...) initializes x; see help(type(x)) for signature</td>
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<span class="summary-type">a new object with type S, a subtype of T</span>
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<td><span class="summary-sig"><a href="nss.io.AddrInfo-class.html#__str__" class="summary-sig-name">__str__</a>(<span class="summary-sig-arg">x</span>)</span><br />
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str(x)</td>
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<!-- ==================== PROPERTIES ==================== -->
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<a name="section-Properties"></a>
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<table class="summary" border="1" cellpadding="3"
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<span class="summary-type"> </span>
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</td><td class="summary">
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<a name="canonical_name"></a><span class="summary-name">canonical_name</span><br />
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Returns the canonical name associated with the IP address or None if not known
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<span class="summary-type"> </span>
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</td><td class="summary">
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<a name="hostname"></a><span class="summary-name">hostname</span><br />
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Returns the hostname this object was initialized from
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<!-- ==================== METHOD DETAILS ==================== -->
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<td align="left"><span class="table-header">Method Details</span></td>
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<a name="__init__"></a>
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<div>
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<table class="details" border="1" cellpadding="3"
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">hostname</span>,
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<span class="sig-arg">family</span>=<span class="sig-default">PR_AF_UNSPEC</span>,
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<span class="sig-arg">flags</span>=<span class="sig-default">PR_AI_ADDRCONFIG</span>)</span>
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<br /><em class="fname">(Constructor)</em>
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>
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x.__init__(...) initializes x; see help(type(x)) for signature
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<dl class="fields">
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<dt>Parameters:</dt>
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<dd><ul class="nomargin-top">
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<li><strong class="pname"><code>hostname</code></strong> (str or unicode object) - Either a hostname or an address string (dotted-decimal for IPv4
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or a hex string for IPv6.</li>
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<li><strong class="pname"><code>family</code></strong> (int) - <dl class="rst-docutils">
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<dt>May be:</dt>
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<dd><ul class="rst-first rst-last rst-simple">
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<li>PR_AF_UNSPEC</li>
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<li>PR_AF_INET.</li>
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</ul>
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</dd>
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</dl></li>
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<li><strong class="pname"><code>flags</code></strong> (int) - <dl class="rst-docutils">
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<dt>May be either:</dt>
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<dd><ul class="rst-first rst-last rst-simple">
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<li>PR_AI_ADDRCONFIG</li>
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<li>PR_AI_ADDRCONFIG | PR_AI_NOCANONNAME</li>
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</ul>
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</dd>
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</dl>
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<p>Include PR_AI_NOCANONNAME to suppress the determination of
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the canonical name corresponding to hostname.</p></li>
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</ul></dd>
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<dt>Overrides:
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object.__init__
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</dt>
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</dl>
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<a name="__new__"></a>
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<span class="sig-arg">S</span>,
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<span class="sig-arg">...</span>)</span>
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</h3>
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>
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<dl class="fields">
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<dt>Returns: a new object with type S, a subtype of T</dt>
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<dt>Overrides:
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object.__new__
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str(x)
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<dt>Overrides:
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