niosocketacceptor.html

MINA+API 关于MINA的API

<a name="116" href="#116">116</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setReuseAddress(<strong class="jxr_keyword">boolean</strong> reuseAddress) {
<a name="117" href="#117">117</a>         <strong class="jxr_keyword">synchronized</strong> (bindLock) {
<a name="118" href="#118">118</a>             <strong class="jxr_keyword">if</strong> (isActive()) {
<a name="119" href="#119">119</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
<a name="120" href="#120">120</a>                         <span class="jxr_string">"reuseAddress can't be set while the acceptor is bound."</span>);
<a name="121" href="#121">121</a>             }
<a name="122" href="#122">122</a> 
<a name="123" href="#123">123</a>             <strong class="jxr_keyword">this</strong>.reuseAddress = reuseAddress;
<a name="124" href="#124">124</a>         }
<a name="125" href="#125">125</a>     }
<a name="126" href="#126">126</a> 
<a name="127" href="#127">127</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getBacklog() {
<a name="128" href="#128">128</a>         <strong class="jxr_keyword">return</strong> backlog;
<a name="129" href="#129">129</a>     }
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setBacklog(<strong class="jxr_keyword">int</strong> backlog) {
<a name="132" href="#132">132</a>         <strong class="jxr_keyword">synchronized</strong> (bindLock) {
<a name="133" href="#133">133</a>             <strong class="jxr_keyword">if</strong> (isActive()) {
<a name="134" href="#134">134</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
<a name="135" href="#135">135</a>                         <span class="jxr_string">"backlog can't be set while the acceptor is bound."</span>);
<a name="136" href="#136">136</a>             }
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a>             <strong class="jxr_keyword">this</strong>.backlog = backlog;
<a name="139" href="#139">139</a>         }
<a name="140" href="#140">140</a>     }
<a name="141" href="#141">141</a> 
<a name="142" href="#142">142</a>     
<a name="143" href="#143">143</a>     @Override
<a name="144" href="#144">144</a>     <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSession.html">NioSession</a> accept(IoProcessor&lt;NioSession&gt; processor,
<a name="145" href="#145">145</a>             ServerSocketChannel handle) <strong class="jxr_keyword">throws</strong> Exception {
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>         SelectionKey key = handle.keyFor(selector);
<a name="148" href="#148">148</a>         <strong class="jxr_keyword">if</strong> (!key.isAcceptable()) {
<a name="149" href="#149">149</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="150" href="#150">150</a>         }
<a name="151" href="#151">151</a> 
<a name="152" href="#152">152</a>         <em class="jxr_comment">// accept the connection from the client</em>
<a name="153" href="#153">153</a>         SocketChannel ch = handle.accept();
<a name="154" href="#154">154</a>         <strong class="jxr_keyword">if</strong> (ch == <strong class="jxr_keyword">null</strong>) {
<a name="155" href="#155">155</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="156" href="#156">156</a>         }
<a name="157" href="#157">157</a> 
<a name="158" href="#158">158</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSocketSession.html">NioSocketSession</a>(<strong class="jxr_keyword">this</strong>, processor, ch);
<a name="159" href="#159">159</a>     }
<a name="160" href="#160">160</a> 
<a name="161" href="#161">161</a>     @Override
<a name="162" href="#162">162</a>     <strong class="jxr_keyword">protected</strong> ServerSocketChannel open(SocketAddress localAddress)
<a name="163" href="#163">163</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="164" href="#164">164</a>         ServerSocketChannel c = ServerSocketChannel.open();
<a name="165" href="#165">165</a>         <strong class="jxr_keyword">boolean</strong> success = false;
<a name="166" href="#166">166</a>         <strong class="jxr_keyword">try</strong> {
<a name="167" href="#167">167</a>             c.configureBlocking(false);
<a name="168" href="#168">168</a>             <em class="jxr_comment">// Configure the server socket,</em>
<a name="169" href="#169">169</a>             c.socket().setReuseAddress(isReuseAddress());
<a name="170" href="#170">170</a>             c.socket().setReceiveBufferSize(
<a name="171" href="#171">171</a>                     getSessionConfig().getReceiveBufferSize());
<a name="172" href="#172">172</a>             <em class="jxr_comment">// and bind.</em>
<a name="173" href="#173">173</a>             c.socket().bind(localAddress, getBacklog());
<a name="174" href="#174">174</a>             c.register(selector, SelectionKey.OP_ACCEPT);
<a name="175" href="#175">175</a>             success = <strong class="jxr_keyword">true</strong>;
<a name="176" href="#176">176</a>         } <strong class="jxr_keyword">finally</strong> {
<a name="177" href="#177">177</a>             <strong class="jxr_keyword">if</strong> (!success) {
<a name="178" href="#178">178</a>                 close(c);
<a name="179" href="#179">179</a>             }
<a name="180" href="#180">180</a>         }
<a name="181" href="#181">181</a>         <strong class="jxr_keyword">return</strong> c;
<a name="182" href="#182">182</a>     }
<a name="183" href="#183">183</a> 
<a name="184" href="#184">184</a>     @Override
<a name="185" href="#185">185</a>     <strong class="jxr_keyword">protected</strong> SocketAddress localAddress(ServerSocketChannel handle)
<a name="186" href="#186">186</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="187" href="#187">187</a>         <strong class="jxr_keyword">return</strong> handle.socket().getLocalSocketAddress();
<a name="188" href="#188">188</a>     }
<a name="189" href="#189">189</a> 
<a name="190" href="#190">190</a>     @Override
<a name="191" href="#191">191</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> select() <strong class="jxr_keyword">throws</strong> Exception {
<a name="192" href="#192">192</a>         <strong class="jxr_keyword">return</strong> selector.select() &gt; 0;
<a name="193" href="#193">193</a>     }
<a name="194" href="#194">194</a> 
<a name="195" href="#195">195</a>     @Override
<a name="196" href="#196">196</a>     <strong class="jxr_keyword">protected</strong> Iterator&lt;ServerSocketChannel&gt; selectedHandles() {
<a name="197" href="#197">197</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSocketAcceptor.html">ServerSocketChannelIterator</a>(selector.selectedKeys());
<a name="198" href="#198">198</a>     }
<a name="199" href="#199">199</a> 
<a name="200" href="#200">200</a>     @Override
<a name="201" href="#201">201</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> close(ServerSocketChannel handle) <strong class="jxr_keyword">throws</strong> Exception {
<a name="202" href="#202">202</a>         SelectionKey key = handle.keyFor(selector);
<a name="203" href="#203">203</a>         <strong class="jxr_keyword">if</strong> (key != <strong class="jxr_keyword">null</strong>) {
<a name="204" href="#204">204</a>             key.cancel();
<a name="205" href="#205">205</a>         }
<a name="206" href="#206">206</a>         handle.close();
<a name="207" href="#207">207</a>     }
<a name="208" href="#208">208</a> 
<a name="209" href="#209">209</a>     @Override
<a name="210" href="#210">210</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> wakeup() {
<a name="211" href="#211">211</a>         selector.wakeup();
<a name="212" href="#212">212</a>     }
<a name="213" href="#213">213</a> 
<a name="214" href="#214">214</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSocketAcceptor.html">ServerSocketChannelIterator</a> implements Iterator&lt;ServerSocketChannel&gt; {
<a name="215" href="#215">215</a>         
<a name="216" href="#216">216</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Iterator&lt;SelectionKey&gt; i;
<a name="217" href="#217">217</a>         
<a name="218" href="#218">218</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSocketAcceptor.html">ServerSocketChannelIterator</a>(Collection&lt;SelectionKey&gt; selectedKeys) {
<a name="219" href="#219">219</a>             <strong class="jxr_keyword">this</strong>.i = selectedKeys.iterator();
<a name="220" href="#220">220</a>         }
<a name="221" href="#221">221</a> 
<a name="222" href="#222">222</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasNext() {
<a name="223" href="#223">223</a>             <strong class="jxr_keyword">return</strong> i.hasNext();
<a name="224" href="#224">224</a>         }
<a name="225" href="#225">225</a> 
<a name="226" href="#226">226</a>         <strong class="jxr_keyword">public</strong> ServerSocketChannel next() {
<a name="227" href="#227">227</a>             SelectionKey key = i.next();
<a name="228" href="#228">228</a>             <strong class="jxr_keyword">return</strong> (ServerSocketChannel) key.channel();
<a name="229" href="#229">229</a>         }
<a name="230" href="#230">230</a> 
<a name="231" href="#231">231</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> remove() {
<a name="232" href="#232">232</a>             i.remove();
<a name="233" href="#233">233</a>         }
<a name="234" href="#234">234</a>     }
<a name="235" href="#235">235</a> }
</pre>
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