Epoll support added. #145

pom.xml

@@ -125,6 +125,11 @@
   	<artifactId>netty-codec</artifactId>
   	<version>4.0.23.Final</version>
   </dependency>
+  <dependency>
+        <groupId>io.netty</groupId>
+        <artifactId>netty-transport-native-epoll</artifactId>
+        <version>4.0.23.Final</version>
+  </dependency>
   
   <dependency>
       <groupId>com.googlecode.jmockit</groupId>

src/main/java/com/corundumstudio/socketio/Configuration.java

@@ -37,6 +37,7 @@ public class Configuration {
 
     private int bossThreads = 0; // 0 = current_processors_amount * 2
     private int workerThreads = 0; // 0 = current_processors_amount * 2
+    private boolean useLinuxNativeEpoll;
 
     private boolean allowCustomRequests = false;
 
@@ -86,6 +87,7 @@ public class Configuration {
     Configuration(Configuration conf) {
         setBossThreads(conf.getBossThreads());
         setWorkerThreads(conf.getWorkerThreads());
+        setUseLinuxNativeEpoll(conf.isUseLinuxNativeEpoll());
 
         setPingInterval(conf.getPingInterval());
         setPingTimeout(conf.getPingTimeout());
@@ -472,4 +474,11 @@ public class Configuration {
         return origin;
     }
 
+    public boolean isUseLinuxNativeEpoll() {
+        return useLinuxNativeEpoll;
+    }
+    public void setUseLinuxNativeEpoll(boolean useLinuxNativeEpoll) {
+        this.useLinuxNativeEpoll = useLinuxNativeEpoll;
+    }
+
 }

src/main/java/com/corundumstudio/socketio/SocketIOServer.java

@@ -19,6 +19,8 @@ import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.ChannelOption;
 import io.netty.channel.EventLoopGroup;
 import io.netty.channel.FixedRecvByteBufAllocator;
+import io.netty.channel.epoll.EpollEventLoopGroup;
+import io.netty.channel.epoll.EpollServerSocketChannel;
 import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioServerSocketChannel;
 import io.netty.util.concurrent.Future;
@@ -128,9 +130,15 @@ public class SocketIOServer implements ClientListeners {
         initGroups();
 
         pipelineFactory.start(configCopy, namespacesHub);
+
+        Class channelClass = NioServerSocketChannel.class;
+        if (configCopy.isUseLinuxNativeEpoll()) {
+            channelClass = EpollServerSocketChannel.class;
+        }
+
         ServerBootstrap b = new ServerBootstrap();
         b.group(bossGroup, workerGroup)
-        .channel(NioServerSocketChannel.class)
+        .channel(channelClass)
         .childHandler(pipelineFactory);
         applyConnectionOptions(b);
 
@@ -169,8 +177,13 @@ public class SocketIOServer implements ClientListeners {
     }
 
     protected void initGroups() {
-        bossGroup = new NioEventLoopGroup(configCopy.getBossThreads());
-        workerGroup = new NioEventLoopGroup(configCopy.getWorkerThreads());
+        if (configCopy.isUseLinuxNativeEpoll()) {
+            bossGroup = new EpollEventLoopGroup(configCopy.getBossThreads());
+            workerGroup = new EpollEventLoopGroup(configCopy.getWorkerThreads());
+        } else {
+            bossGroup = new NioEventLoopGroup(configCopy.getBossThreads());
+            workerGroup = new NioEventLoopGroup(configCopy.getWorkerThreads());
+        }
     }
 
     /**