diff --git a/pom.xml b/pom.xml
index 87b78db..e7ca6ba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,6 +43,28 @@
           <target>1.6</target>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-javadoc-plugin</artifactId>
+        <version>2.9</version>
+        <configuration>
+          <show>protected</show>
+          <windowtitle>Socket.IO Client API</windowtitle>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.14.1</version>
+        <configuration>
+          <systemProperties>
+            <property>
+              <name>java.util.logging.config.file</name>
+              <value>./src/test/resources/logging.properties</value>
+            </property>
+          </systemProperties>
+        </configuration>
+      </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>
diff --git a/src/main/java/com/github/nkzawa/socketio/client/Manager.java b/src/main/java/com/github/nkzawa/socketio/client/Manager.java
index be6f9be..284e856 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/Manager.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/Manager.java
@@ -13,7 +13,7 @@ import java.util.logging.Logger;
 
 public class Manager extends Emitter {
 
-    private static final Logger logger = Logger.getLogger("socket.io-client:manager");
+    private static final Logger logger = Logger.getLogger(Manager.class.getName());
 
     /*package*/ static final int CLOSED = 0;
     /*package*/ static final int OPENING = 1;
@@ -153,12 +153,12 @@ public class Manager extends Emitter {
 
         if (this._timeout >= 0) {
             final long timeout = this._timeout;
-            logger.info(String.format("connection attempt will timeout after %d", timeout));
+            logger.fine(String.format("connection attempt will timeout after %d", timeout));
 
             final Future timer = timeoutScheduler.schedule(new Runnable() {
                 @Override
                 public void run() {
-                    logger.info(String.format("connect attempt timed out after %d", timeout));
+                    logger.fine(String.format("connect attempt timed out after %d", timeout));
                     openSub.destroy();
                     socket.close();
                     socket.emit(Engine.EVENT_ERROR, new SocketIOException("timeout"));
@@ -244,7 +244,7 @@ public class Manager extends Emitter {
     }
 
     /*package*/ void packet(Packet packet) {
-        logger.info(String.format("writing packet %s", packet));
+        logger.fine(String.format("writing packet %s", packet));
         this.engine.write(Parser.encode(packet));
     }
 
@@ -277,22 +277,22 @@ public class Manager extends Emitter {
         } else {
             long delay = this.attempts.get() * this.reconnectionDelay();
             delay = Math.min(delay, this.reconnectionDelayMax());
-            logger.info(String.format("will wait %dms before reconnect attempt", delay));
+            logger.fine(String.format("will wait %dms before reconnect attempt", delay));
 
             this.reconnecting = true;
             final Future timer = this.reconnectScheduler.schedule(new Runnable() {
                 @Override
                 public void run() {
-                    logger.info("attempting reconnect");
+                    logger.fine("attempting reconnect");
                     self.open(new OpenCallback() {
                         @Override
                         public void call(Exception err) {
                             if (err != null) {
-                                logger.info("reconnect attempt error");
+                                logger.fine("reconnect attempt error");
                                 self.reconnect();
                                 self.emit(EVENT_RECONNECT_ERROR, err);
                             } else {
-                                logger.info("reconnect success");
+                                logger.fine("reconnect success");
                                 self.onreconnect();
                             }
                         }
diff --git a/src/main/java/com/github/nkzawa/socketio/client/Socket.java b/src/main/java/com/github/nkzawa/socketio/client/Socket.java
index f2b4390..151e682 100644
--- a/src/main/java/com/github/nkzawa/socketio/client/Socket.java
+++ b/src/main/java/com/github/nkzawa/socketio/client/Socket.java
@@ -15,7 +15,7 @@ import java.util.logging.Logger;
 
 public class Socket extends Emitter {
 
-    private static final Logger logger = Logger.getLogger("socket.io-client:socket");
+    private static final Logger logger = Logger.getLogger(Socket.class.getName());
 
     private static final Gson gson = new Gson();
 
@@ -108,7 +108,7 @@ public class Socket extends Emitter {
         Packet packet = new Packet(Parser.EVENT, toJsonArray(_args));
 
         int ids = this.ids.getAndIncrement();
-        logger.info(String.format("emitting packet with ack id %d", ids));
+        logger.fine(String.format("emitting packet with ack id %d", ids));
         this.acks.put(ids, ack);
         packet.id = ids;
 
@@ -127,7 +127,7 @@ public class Socket extends Emitter {
     }
 
     private void onopen() {
-        logger.info("transport is open - connecting");
+        logger.fine("transport is open - connecting");
 
         if (!"/".equals(this.nsp)) {
             this.packet(new Packet(Parser.CONNECT));
@@ -150,7 +150,7 @@ public class Socket extends Emitter {
     }
 
     private void onclose(String reason) {
-        logger.info(String.format("close (%s)", reason));
+        logger.fine(String.format("close (%s)", reason));
         this.connected = false;
         this.disconnected = true;
         this.emit(EVENT_DISCONNECT, reason);
@@ -184,10 +184,10 @@ public class Socket extends Emitter {
 
     private void onevent(Packet packet) {
         LinkedList<Object> args = new LinkedList<Object>(fromJsonArray(packet.data.getAsJsonArray()));
-        logger.info(String.format("emitting event %s", args));
+        logger.fine(String.format("emitting event %s", args));
 
         if (packet.id >= 0) {
-            logger.info("attaching ack callback to event");
+            logger.fine("attaching ack callback to event");
             args.offerLast(this.ack(packet.id));
         }
 
@@ -207,7 +207,7 @@ public class Socket extends Emitter {
             public synchronized void call(Object... args) {
                 if (sent[0]) return;
                 sent[0] = true;
-                logger.info(String.format("sending ack %s", args));
+                logger.fine(String.format("sending ack %s", args));
                 Packet packet = new Packet(Parser.ACK, gson.toJsonTree(args));
                 packet.id = id;
                 self.packet(packet);
@@ -216,7 +216,7 @@ public class Socket extends Emitter {
     }
 
     private void onack(Packet packet) {
-        logger.info(String.format("calling ack %s with %s", packet.id, packet.data));
+        logger.fine(String.format("calling ack %s with %s", packet.id, packet.data));
         Ack fn = this.acks.remove(packet.id);
         fn.call(fromJsonArray(packet.data.getAsJsonArray()).toArray());
     }
@@ -239,13 +239,13 @@ public class Socket extends Emitter {
     }
 
     private void ondisconnect() {
-        logger.info(String.format("server disconnect (%s)", this.nsp));
+        logger.fine(String.format("server disconnect (%s)", this.nsp));
         this.destroy();
         this.onclose("io server disconnect");
     }
 
     private void destroy() {
-        logger.info(String.format("destroying socket (%s)", this.nsp));
+        logger.fine(String.format("destroying socket (%s)", this.nsp));
 
         for (On.Handle sub : this.subs) {
             sub.destroy();
@@ -257,7 +257,7 @@ public class Socket extends Emitter {
     public Socket close() {
         if (!this.connected) return this;
 
-        logger.info(String.format("performing disconnect (%s)", this.nsp));
+        logger.fine(String.format("performing disconnect (%s)", this.nsp));
         this.packet(new Packet(Parser.DISCONNECT));
 
         this.destroy();
diff --git a/src/main/java/com/github/nkzawa/socketio/parser/Parser.java b/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
index c4b7c78..26c63c8 100644
--- a/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
+++ b/src/main/java/com/github/nkzawa/socketio/parser/Parser.java
@@ -11,7 +11,7 @@ import java.util.logging.Logger;
 
 public class Parser {
 
-    private static final Logger logger = Logger.getLogger("socket.io-parser");
+    private static final Logger logger = Logger.getLogger(Parser.class.getName());
 
     private static final Gson gson = new Gson();
     private static final JsonParser parser = new JsonParser();
@@ -56,7 +56,7 @@ public class Parser {
             str.append(gson.toJson(obj.data));
         }
 
-        logger.info(String.format("encoded %s as %s", obj, str));
+        logger.fine(String.format("encoded %s as %s", obj, str));
         return str.toString();
     }
 
@@ -121,7 +121,7 @@ public class Parser {
             return error();
         }
 
-        logger.info(String.format("decoded %s as %s", str, p));
+        logger.fine(String.format("decoded %s as %s", str, p));
         return p;
     }
 
diff --git a/src/test/java/com/github/nkzawa/socketio/client/IOTest.java b/src/test/java/com/github/nkzawa/socketio/client/ServerConnectionTest.java
similarity index 99%
rename from src/test/java/com/github/nkzawa/socketio/client/IOTest.java
rename to src/test/java/com/github/nkzawa/socketio/client/ServerConnectionTest.java
index 7ed701c..117e702 100644
--- a/src/test/java/com/github/nkzawa/socketio/client/IOTest.java
+++ b/src/test/java/com/github/nkzawa/socketio/client/ServerConnectionTest.java
@@ -21,7 +21,7 @@ import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
 
 @RunWith(JUnit4.class)
-public class IOTest {
+public class ServerConnectionTest {
 
     final static int TIMEOUT = 3000;
     final static int PORT = 3000;
diff --git a/src/test/resources/logging.properties b/src/test/resources/logging.properties
new file mode 100644
index 0000000..b1a5c7d
--- /dev/null
+++ b/src/test/resources/logging.properties
@@ -0,0 +1,8 @@
+handlers = java.util.logging.ConsoleHandler, java.util.logging.FileHandler
+.level = ALL
+
+java.util.logging.ConsoleHandler.level = FINE
+
+java.util.logging.FileHandler.level = ALL
+java.util.logging.FileHandler.pattern = ./target/test.log
+java.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter