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<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.net.BindException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.net.InetAddress;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.net.InetSocketAddress;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.net.ServerSocket;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.nio.channels.ServerSocketChannel;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Locale;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.testclassification.MiscTests;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.junit.Assert;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.junit.ClassRule;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.junit.Test;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.junit.experimental.categories.Category;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.slf4j.Logger;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.slf4j.LoggerFactory;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>/**<a name="line.36"></a>
<span class="sourceLineNo">037</span> * This tests whether ServerSocketChannel works over ipv6, which ZooKeeper<a name="line.37"></a>
<span class="sourceLineNo">038</span> * depends on. On Windows Oracle JDK 6, creating a ServerSocketChannel throws<a name="line.38"></a>
<span class="sourceLineNo">039</span> * java.net.SocketException: Address family not supported by protocol family<a name="line.39"></a>
<span class="sourceLineNo">040</span> * exception. It is a known JVM bug, seems to be only resolved for JDK7:<a name="line.40"></a>
<span class="sourceLineNo">041</span> * http://bugs.sun.com/view_bug.do?bug_id=6230761<a name="line.41"></a>
<span class="sourceLineNo">042</span> *<a name="line.42"></a>
<span class="sourceLineNo">043</span> * For this test, we check that whether we are effected by this bug, and if so<a name="line.43"></a>
<span class="sourceLineNo">044</span> * the test ensures that we are running with java.net.preferIPv4Stack=true, so<a name="line.44"></a>
<span class="sourceLineNo">045</span> * that ZK will not fail to bind to ipv6 address using ClientCnxnSocketNIO.<a name="line.45"></a>
<span class="sourceLineNo">046</span> */<a name="line.46"></a>
<span class="sourceLineNo">047</span>@Category({MiscTests.class, SmallTests.class})<a name="line.47"></a>
<span class="sourceLineNo">048</span>public class TestIPv6NIOServerSocketChannel {<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> @ClassRule<a name="line.50"></a>
<span class="sourceLineNo">051</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.51"></a>
<span class="sourceLineNo">052</span> HBaseClassTestRule.forClass(TestIPv6NIOServerSocketChannel.class);<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> private static final Logger LOG = LoggerFactory.getLogger(TestIPv6NIOServerSocketChannel.class);<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span> /**<a name="line.56"></a>
<span class="sourceLineNo">057</span> * Creates and binds a regular ServerSocket.<a name="line.57"></a>
<span class="sourceLineNo">058</span> */<a name="line.58"></a>
<span class="sourceLineNo">059</span> private void bindServerSocket(InetAddress inetAddr) throws IOException {<a name="line.59"></a>
<span class="sourceLineNo">060</span> while(true) {<a name="line.60"></a>
<span class="sourceLineNo">061</span> int port = HBaseTestingUtility.randomFreePort();<a name="line.61"></a>
<span class="sourceLineNo">062</span> InetSocketAddress addr = new InetSocketAddress(inetAddr, port);<a name="line.62"></a>
<span class="sourceLineNo">063</span> ServerSocket serverSocket = null;<a name="line.63"></a>
<span class="sourceLineNo">064</span> try {<a name="line.64"></a>
<span class="sourceLineNo">065</span> serverSocket = new ServerSocket();<a name="line.65"></a>
<span class="sourceLineNo">066</span> serverSocket.bind(addr);<a name="line.66"></a>
<span class="sourceLineNo">067</span> break;<a name="line.67"></a>
<span class="sourceLineNo">068</span> } catch (BindException ex) {<a name="line.68"></a>
<span class="sourceLineNo">069</span> //continue<a name="line.69"></a>
<span class="sourceLineNo">070</span> LOG.info("Failed on " + addr + ", inedAddr=" + inetAddr, ex);<a name="line.70"></a>
<span class="sourceLineNo">071</span> } finally {<a name="line.71"></a>
<span class="sourceLineNo">072</span> if (serverSocket != null) {<a name="line.72"></a>
<span class="sourceLineNo">073</span> serverSocket.close();<a name="line.73"></a>
<span class="sourceLineNo">074</span> }<a name="line.74"></a>
<span class="sourceLineNo">075</span> }<a name="line.75"></a>
<span class="sourceLineNo">076</span> }<a name="line.76"></a>
<span class="sourceLineNo">077</span> }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> /**<a name="line.79"></a>
<span class="sourceLineNo">080</span> * Creates a NIO ServerSocketChannel, and gets the ServerSocket from<a name="line.80"></a>
<span class="sourceLineNo">081</span> * there. Then binds the obtained socket.<a name="line.81"></a>
<span class="sourceLineNo">082</span> * This fails on Windows with Oracle JDK1.6.0u33, if the passed InetAddress is a<a name="line.82"></a>
<span class="sourceLineNo">083</span> * IPv6 address. Works on Oracle JDK 1.7.<a name="line.83"></a>
<span class="sourceLineNo">084</span> */<a name="line.84"></a>
<span class="sourceLineNo">085</span> private void bindNIOServerSocket(InetAddress inetAddr) throws IOException {<a name="line.85"></a>
<span class="sourceLineNo">086</span> while (true) {<a name="line.86"></a>
<span class="sourceLineNo">087</span> int port = HBaseTestingUtility.randomFreePort();<a name="line.87"></a>
<span class="sourceLineNo">088</span> InetSocketAddress addr = new InetSocketAddress(inetAddr, port);<a name="line.88"></a>
<span class="sourceLineNo">089</span> ServerSocketChannel channel = null;<a name="line.89"></a>
<span class="sourceLineNo">090</span> ServerSocket serverSocket = null;<a name="line.90"></a>
<span class="sourceLineNo">091</span> try {<a name="line.91"></a>
<span class="sourceLineNo">092</span> channel = ServerSocketChannel.open();<a name="line.92"></a>
<span class="sourceLineNo">093</span> serverSocket = channel.socket();<a name="line.93"></a>
<span class="sourceLineNo">094</span> serverSocket.bind(addr); // This does not work<a name="line.94"></a>
<span class="sourceLineNo">095</span> break;<a name="line.95"></a>
<span class="sourceLineNo">096</span> } catch (BindException ex) {<a name="line.96"></a>
<span class="sourceLineNo">097</span> //continue<a name="line.97"></a>
<span class="sourceLineNo">098</span> } finally {<a name="line.98"></a>
<span class="sourceLineNo">099</span> if (serverSocket != null) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> serverSocket.close();<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span> if (channel != null) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> channel.close();<a name="line.103"></a>
<span class="sourceLineNo">104</span> }<a name="line.104"></a>
<span class="sourceLineNo">105</span> }<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span> /**<a name="line.109"></a>
<span class="sourceLineNo">110</span> * Checks whether we are effected by the JDK issue on windows, and if so<a name="line.110"></a>
<span class="sourceLineNo">111</span> * ensures that we are running with preferIPv4Stack=true.<a name="line.111"></a>
<span class="sourceLineNo">112</span> */<a name="line.112"></a>
<span class="sourceLineNo">113</span> @Test<a name="line.113"></a>
<span class="sourceLineNo">114</span> public void testServerSocket() throws IOException {<a name="line.114"></a>
<span class="sourceLineNo">115</span> byte[] addr = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };<a name="line.115"></a>
<span class="sourceLineNo">116</span> InetAddress inetAddr = InetAddress.getByAddress(addr);<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span> try {<a name="line.118"></a>
<span class="sourceLineNo">119</span> bindServerSocket(inetAddr);<a name="line.119"></a>
<span class="sourceLineNo">120</span> bindNIOServerSocket(inetAddr);<a name="line.120"></a>
<span class="sourceLineNo">121</span> //if on *nix or windows JDK7, both will pass<a name="line.121"></a>
<span class="sourceLineNo">122</span> } catch(java.net.SocketException ex) {<a name="line.122"></a>
<span class="sourceLineNo">123</span> //On Windows JDK6, we will get expected exception:<a name="line.123"></a>
<span class="sourceLineNo">124</span> //java.net.SocketException: Address family not supported by protocol family<a name="line.124"></a>
<span class="sourceLineNo">125</span> //or java.net.SocketException: Protocol family not supported<a name="line.125"></a>
<span class="sourceLineNo">126</span> Assert.assertFalse(ex instanceof BindException);<a name="line.126"></a>
<span class="sourceLineNo">127</span> Assert.assertTrue(ex.getMessage().toLowerCase(Locale.ROOT).contains("protocol family"));<a name="line.127"></a>
<span class="sourceLineNo">128</span> LOG.info("Received expected exception:", ex);<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span> //if this is the case, ensure that we are running on preferIPv4=true<a name="line.130"></a>
<span class="sourceLineNo">131</span> ensurePreferIPv4();<a name="line.131"></a>
<span class="sourceLineNo">132</span> }<a name="line.132"></a>
<span class="sourceLineNo">133</span> }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span> /**<a name="line.135"></a>
<span class="sourceLineNo">136</span> * Checks whether we are running with java.net.preferIPv4Stack=true<a name="line.136"></a>
<span class="sourceLineNo">137</span> */<a name="line.137"></a>
<span class="sourceLineNo">138</span> public void ensurePreferIPv4() throws IOException {<a name="line.138"></a>
<span class="sourceLineNo">139</span> InetAddress[] addrs = InetAddress.getAllByName("localhost");<a name="line.139"></a>
<span class="sourceLineNo">140</span> for (InetAddress addr : addrs) {<a name="line.140"></a>
<span class="sourceLineNo">141</span> LOG.info("resolved localhost as:" + addr);<a name="line.141"></a>
<span class="sourceLineNo">142</span> Assert.assertEquals(4, addr.getAddress().length); //ensure 4 byte ipv4 address<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span> }<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span> /**<a name="line.146"></a>
<span class="sourceLineNo">147</span> * Tests whether every InetAddress we obtain by resolving can open a<a name="line.147"></a>
<span class="sourceLineNo">148</span> * ServerSocketChannel.<a name="line.148"></a>
<span class="sourceLineNo">149</span> */<a name="line.149"></a>
<span class="sourceLineNo">150</span> @Test<a name="line.150"></a>
<span class="sourceLineNo">151</span> public void testServerSocketFromLocalhostResolution() throws IOException {<a name="line.151"></a>
<span class="sourceLineNo">152</span> InetAddress[] addrs = {InetAddress.getLocalHost()};<a name="line.152"></a>
<span class="sourceLineNo">153</span> for (InetAddress addr : addrs) {<a name="line.153"></a>
<span class="sourceLineNo">154</span> LOG.info("Resolved localhost as: " + addr);<a name="line.154"></a>
<span class="sourceLineNo">155</span> bindServerSocket(addr);<a name="line.155"></a>
<span class="sourceLineNo">156</span> bindNIOServerSocket(addr);<a name="line.156"></a>
<span class="sourceLineNo">157</span> }<a name="line.157"></a>
<span class="sourceLineNo">158</span> }<a name="line.158"></a>
<span class="sourceLineNo">159</span><a name="line.159"></a>
<span class="sourceLineNo">160</span> public static void main(String[] args) throws Exception {<a name="line.160"></a>
<span class="sourceLineNo">161</span> TestIPv6NIOServerSocketChannel test = new TestIPv6NIOServerSocketChannel();<a name="line.161"></a>
<span class="sourceLineNo">162</span> test.testServerSocket();<a name="line.162"></a>
<span class="sourceLineNo">163</span> test.testServerSocketFromLocalhostResolution();<a name="line.163"></a>
<span class="sourceLineNo">164</span> }<a name="line.164"></a>
<span class="sourceLineNo">165</span>}<a name="line.165"></a>
</pre>
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