niodatagramacceptor.html

MINA+API 关于MINA的API

<a name="123" href="#123">123</a>             }
<a name="124" href="#124">124</a>         }
<a name="125" href="#125">125</a> 
<a name="126" href="#126">126</a>         <strong class="jxr_keyword">return</strong> c;
<a name="127" href="#127">127</a>     }
<a name="128" href="#128">128</a> 
<a name="129" href="#129">129</a>     @Override
<a name="130" href="#130">130</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isReadable(DatagramChannel handle) {
<a name="131" href="#131">131</a>         SelectionKey key = handle.keyFor(selector);
<a name="132" href="#132">132</a>         <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>) {
<a name="133" href="#133">133</a>             <strong class="jxr_keyword">return</strong> false;
<a name="134" href="#134">134</a>         }
<a name="135" href="#135">135</a>         <strong class="jxr_keyword">if</strong> (!key.isValid()) {
<a name="136" href="#136">136</a>             <strong class="jxr_keyword">return</strong> false;
<a name="137" href="#137">137</a>         }
<a name="138" href="#138">138</a>         <strong class="jxr_keyword">return</strong> key.isReadable();
<a name="139" href="#139">139</a>     }
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>     @Override
<a name="142" href="#142">142</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isWritable(DatagramChannel handle) {
<a name="143" href="#143">143</a>         SelectionKey key = handle.keyFor(selector);
<a name="144" href="#144">144</a>         <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>) {
<a name="145" href="#145">145</a>             <strong class="jxr_keyword">return</strong> false;
<a name="146" href="#146">146</a>         }
<a name="147" href="#147">147</a>         <strong class="jxr_keyword">if</strong> (!key.isValid()) {
<a name="148" href="#148">148</a>             <strong class="jxr_keyword">return</strong> false;
<a name="149" href="#149">149</a>         }
<a name="150" href="#150">150</a>         <strong class="jxr_keyword">return</strong> key.isWritable();
<a name="151" href="#151">151</a>     }
<a name="152" href="#152">152</a> 
<a name="153" href="#153">153</a>     @Override
<a name="154" href="#154">154</a>     <strong class="jxr_keyword">protected</strong> SocketAddress localAddress(DatagramChannel handle)
<a name="155" href="#155">155</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="156" href="#156">156</a>         <strong class="jxr_keyword">return</strong> handle.socket().getLocalSocketAddress();
<a name="157" href="#157">157</a>     }
<a name="158" href="#158">158</a> 
<a name="159" href="#159">159</a>     @Override
<a name="160" href="#160">160</a>     <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioSession.html">NioSession</a> newSession(
<a name="161" href="#161">161</a>             IoProcessor&lt;NioSession&gt; processor, DatagramChannel handle,
<a name="162" href="#162">162</a>             SocketAddress remoteAddress) {
<a name="163" href="#163">163</a>         SelectionKey key = handle.keyFor(selector);
<a name="164" href="#164">164</a>         <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>) {
<a name="165" href="#165">165</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="166" href="#166">166</a>         }
<a name="167" href="#167">167</a>         <a href="../../../../../../org/apache/mina/transport/socket/nio/NioDatagramSession.html">NioDatagramSession</a> newSession = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioDatagramSession.html">NioDatagramSession</a>(
<a name="168" href="#168">168</a>                 <strong class="jxr_keyword">this</strong>, handle, processor, remoteAddress);
<a name="169" href="#169">169</a>         newSession.setSelectionKey(key);
<a name="170" href="#170">170</a>         
<a name="171" href="#171">171</a>         <strong class="jxr_keyword">return</strong> newSession;
<a name="172" href="#172">172</a>     }
<a name="173" href="#173">173</a> 
<a name="174" href="#174">174</a>     @Override
<a name="175" href="#175">175</a>     <strong class="jxr_keyword">protected</strong> SocketAddress receive(DatagramChannel handle, <a href="../../../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> buffer)
<a name="176" href="#176">176</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="177" href="#177">177</a>         <strong class="jxr_keyword">return</strong> handle.receive(buffer.buf());
<a name="178" href="#178">178</a>     }
<a name="179" href="#179">179</a> 
<a name="180" href="#180">180</a>     @Override
<a name="181" href="#181">181</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> select(<strong class="jxr_keyword">int</strong> timeout) <strong class="jxr_keyword">throws</strong> Exception {
<a name="182" href="#182">182</a>         <strong class="jxr_keyword">return</strong> selector.select(timeout) &gt; 0;
<a name="183" href="#183">183</a>     }
<a name="184" href="#184">184</a> 
<a name="185" href="#185">185</a>     @Override
<a name="186" href="#186">186</a>     <strong class="jxr_keyword">protected</strong> Iterator&lt;DatagramChannel&gt; selectedHandles() {
<a name="187" href="#187">187</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioDatagramAcceptor.html">DatagramChannelIterator</a>(selector.selectedKeys());
<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">int</strong> send(<a href="../../../../../../org/apache/mina/transport/socket/nio/NioSession.html">NioSession</a> session, <a href="../../../../../../org/apache/mina/common/IoBuffer.html">IoBuffer</a> buffer,
<a name="192" href="#192">192</a>             SocketAddress remoteAddress) <strong class="jxr_keyword">throws</strong> Exception {
<a name="193" href="#193">193</a>         <strong class="jxr_keyword">return</strong> ((DatagramChannel) session.getChannel()).send(
<a name="194" href="#194">194</a>                 buffer.buf(), remoteAddress);
<a name="195" href="#195">195</a>     }
<a name="196" href="#196">196</a> 
<a name="197" href="#197">197</a>     @Override
<a name="198" href="#198">198</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setInterestedInWrite(<a href="../../../../../../org/apache/mina/transport/socket/nio/NioSession.html">NioSession</a> session, <strong class="jxr_keyword">boolean</strong> interested)
<a name="199" href="#199">199</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="200" href="#200">200</a>         SelectionKey key = session.getSelectionKey();
<a name="201" href="#201">201</a>         <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>) {
<a name="202" href="#202">202</a>             <strong class="jxr_keyword">return</strong>;
<a name="203" href="#203">203</a>         }
<a name="204" href="#204">204</a>         
<a name="205" href="#205">205</a>         <strong class="jxr_keyword">if</strong> (interested) {
<a name="206" href="#206">206</a>             key.interestOps(key.interestOps() | SelectionKey.OP_WRITE);
<a name="207" href="#207">207</a>         } <strong class="jxr_keyword">else</strong> {
<a name="208" href="#208">208</a>             key.interestOps(key.interestOps() &amp; ~SelectionKey.OP_WRITE);
<a name="209" href="#209">209</a>         }
<a name="210" href="#210">210</a>     }
<a name="211" href="#211">211</a> 
<a name="212" href="#212">212</a>     @Override
<a name="213" href="#213">213</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> close(DatagramChannel handle) <strong class="jxr_keyword">throws</strong> Exception {
<a name="214" href="#214">214</a>         SelectionKey key = handle.keyFor(selector);
<a name="215" href="#215">215</a>         <strong class="jxr_keyword">if</strong> (key != <strong class="jxr_keyword">null</strong>) {
<a name="216" href="#216">216</a>             key.cancel();
<a name="217" href="#217">217</a>         }
<a name="218" href="#218">218</a>         handle.disconnect();
<a name="219" href="#219">219</a>         handle.close();
<a name="220" href="#220">220</a>     }
<a name="221" href="#221">221</a> 
<a name="222" href="#222">222</a>     @Override
<a name="223" href="#223">223</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> wakeup() {
<a name="224" href="#224">224</a>         selector.wakeup();
<a name="225" href="#225">225</a>     }
<a name="226" href="#226">226</a>     
<a name="227" href="#227">227</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/NioDatagramAcceptor.html">DatagramChannelIterator</a> implements Iterator&lt;DatagramChannel&gt; {
<a name="228" href="#228">228</a>         
<a name="229" href="#229">229</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Iterator&lt;SelectionKey&gt; i;
<a name="230" href="#230">230</a>         
<a name="231" href="#231">231</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/transport/socket/nio/NioDatagramAcceptor.html">DatagramChannelIterator</a>(Collection&lt;SelectionKey&gt; keys) {
<a name="232" href="#232">232</a>             <strong class="jxr_keyword">this</strong>.i = keys.iterator();
<a name="233" href="#233">233</a>         }
<a name="234" href="#234">234</a>         
<a name="235" href="#235">235</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasNext() {
<a name="236" href="#236">236</a>             <strong class="jxr_keyword">return</strong> i.hasNext();
<a name="237" href="#237">237</a>         }
<a name="238" href="#238">238</a> 
<a name="239" href="#239">239</a>         <strong class="jxr_keyword">public</strong> DatagramChannel next() {
<a name="240" href="#240">240</a>             <strong class="jxr_keyword">return</strong> (DatagramChannel) i.next().channel();
<a name="241" href="#241">241</a>         }
<a name="242" href="#242">242</a> 
<a name="243" href="#243">243</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> remove() {
<a name="244" href="#244">244</a>             i.remove();
<a name="245" href="#245">245</a>         }
<a name="246" href="#246">246</a>         
<a name="247" href="#247">247</a>     }
<a name="248" href="#248">248</a> }
</pre>
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