streamiohandler.html

MINA+API 关于MINA的API

<a name="90" href="#90">90</a>      }
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>      <em class="jxr_javadoccomment">/**</em>
<a name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * Sets write timeout in seconds.</em>
<a name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     * The default value is &lt;tt&gt;0&lt;/tt&gt; (disabled).</em>
<a name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     */</em>
<a name="96" href="#96">96</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setWriteTimeout(<strong class="jxr_keyword">int</strong> writeTimeout) {
<a name="97" href="#97">97</a>          <strong class="jxr_keyword">this</strong>.writeTimeout = writeTimeout;
<a name="98" href="#98">98</a>      }
<a name="99" href="#99">99</a>  
<a name="100" href="#100">100</a>     <em class="jxr_javadoccomment">/**</em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     * Initializes streams and timeout settings.</em>
<a name="102" href="#102">102</a> <em class="jxr_javadoccomment">     */</em>
<a name="103" href="#103">103</a>     @Override
<a name="104" href="#104">104</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionOpened(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) {
<a name="105" href="#105">105</a>         <em class="jxr_comment">// Set timeouts</em>
<a name="106" href="#106">106</a>         session.getConfig().setWriteTimeout(writeTimeout);
<a name="107" href="#107">107</a>         session.getConfig().setIdleTime(IdleStatus.READER_IDLE, readTimeout);
<a name="108" href="#108">108</a> 
<a name="109" href="#109">109</a>         <em class="jxr_comment">// Create streams</em>
<a name="110" href="#110">110</a>         InputStream in = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/handler/stream/IoSessionInputStream.html">IoSessionInputStream</a>();
<a name="111" href="#111">111</a>         OutputStream out = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/handler/stream/IoSessionOutputStream.html">IoSessionOutputStream</a>(session);
<a name="112" href="#112">112</a>         session.setAttribute(KEY_IN, in);
<a name="113" href="#113">113</a>         session.setAttribute(KEY_OUT, out);
<a name="114" href="#114">114</a>         processStreamIo(session, in, out);
<a name="115" href="#115">115</a>     }
<a name="116" href="#116">116</a> 
<a name="117" href="#117">117</a>     <em class="jxr_javadoccomment">/**</em>
<a name="118" href="#118">118</a> <em class="jxr_javadoccomment">     * Closes streams</em>
<a name="119" href="#119">119</a> <em class="jxr_javadoccomment">     */</em>
<a name="120" href="#120">120</a>     @Override
<a name="121" href="#121">121</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionClosed(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception {
<a name="122" href="#122">122</a>         <strong class="jxr_keyword">final</strong> InputStream in = (InputStream) session.getAttribute(KEY_IN);
<a name="123" href="#123">123</a>         <strong class="jxr_keyword">final</strong> OutputStream out = (OutputStream) session.getAttribute(KEY_OUT);
<a name="124" href="#124">124</a>         <strong class="jxr_keyword">try</strong> {
<a name="125" href="#125">125</a>             in.close();
<a name="126" href="#126">126</a>         } <strong class="jxr_keyword">finally</strong> {
<a name="127" href="#127">127</a>             out.close();
<a name="128" href="#128">128</a>         }
<a name="129" href="#129">129</a>     }
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>     <em class="jxr_javadoccomment">/**</em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     * Forwards read data to input stream.</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     */</em>
<a name="134" href="#134">134</a>     @Override
<a name="135" href="#135">135</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> messageReceived(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Object buf) {
<a name="136" href="#136">136</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/mina/handler/stream/IoSessionInputStream.html">IoSessionInputStream</a> in = (IoSessionInputStream) session
<a name="137" href="#137">137</a>                 .getAttribute(KEY_IN);
<a name="138" href="#138">138</a>         in.write((IoBuffer) buf);
<a name="139" href="#139">139</a>     }
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>     <em class="jxr_javadoccomment">/**</em>
<a name="142" href="#142">142</a> <em class="jxr_javadoccomment">     * Forwards caught exceptions to input stream.</em>
<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">     */</em>
<a name="144" href="#144">144</a>     @Override
<a name="145" href="#145">145</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> exceptionCaught(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Throwable cause) {
<a name="146" href="#146">146</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/mina/handler/stream/IoSessionInputStream.html">IoSessionInputStream</a> in = (IoSessionInputStream) session
<a name="147" href="#147">147</a>                 .getAttribute(KEY_IN);
<a name="148" href="#148">148</a> 
<a name="149" href="#149">149</a>         IOException e = <strong class="jxr_keyword">null</strong>;
<a name="150" href="#150">150</a>         <strong class="jxr_keyword">if</strong> (cause instanceof StreamIoException) {
<a name="151" href="#151">151</a>             e = (IOException) cause.getCause();
<a name="152" href="#152">152</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (cause instanceof IOException) {
<a name="153" href="#153">153</a>             e = (IOException) cause;
<a name="154" href="#154">154</a>         }
<a name="155" href="#155">155</a> 
<a name="156" href="#156">156</a>         <strong class="jxr_keyword">if</strong> (e != <strong class="jxr_keyword">null</strong> &amp;&amp; in != <strong class="jxr_keyword">null</strong>) {
<a name="157" href="#157">157</a>             in.throwException(e);
<a name="158" href="#158">158</a>         } <strong class="jxr_keyword">else</strong> {
<a name="159" href="#159">159</a>             logger.warn(<span class="jxr_string">"Unexpected exception."</span>, cause);
<a name="160" href="#160">160</a>             session.close();
<a name="161" href="#161">161</a>         }
<a name="162" href="#162">162</a>     }
<a name="163" href="#163">163</a> 
<a name="164" href="#164">164</a>     <em class="jxr_javadoccomment">/**</em>
<a name="165" href="#165">165</a> <em class="jxr_javadoccomment">     * Handles read timeout.</em>
<a name="166" href="#166">166</a> <em class="jxr_javadoccomment">     */</em>
<a name="167" href="#167">167</a>     @Override
<a name="168" href="#168">168</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionIdle(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, <a href="../../../../../org/apache/mina/common/IdleStatus.html">IdleStatus</a> status) {
<a name="169" href="#169">169</a>         <strong class="jxr_keyword">if</strong> (status == IdleStatus.READER_IDLE) {
<a name="170" href="#170">170</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/handler/stream/StreamIoHandler.html">StreamIoException</a>(<strong class="jxr_keyword">new</strong> SocketTimeoutException(
<a name="171" href="#171">171</a>                     <span class="jxr_string">"Read timeout"</span>));
<a name="172" href="#172">172</a>         }
<a name="173" href="#173">173</a>     }
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/mina/handler/stream/StreamIoHandler.html">StreamIoException</a> <strong class="jxr_keyword">extends</strong> RuntimeException {
<a name="176" href="#176">176</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = 3976736960742503222L;
<a name="177" href="#177">177</a> 
<a name="178" href="#178">178</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/mina/handler/stream/StreamIoHandler.html">StreamIoException</a>(IOException cause) {
<a name="179" href="#179">179</a>             <strong class="jxr_keyword">super</strong>(cause);
<a name="180" href="#180">180</a>         }
<a name="181" href="#181">181</a>     }
<a name="182" href="#182">182</a> }
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