improve tests

src/test/java/io/socket/client/executions/ConnectionFailure.java

@@ -3,6 +3,7 @@ package io.socket.client.executions;
 import io.socket.emitter.Emitter;
 import io.socket.client.IO;
 import io.socket.client.Socket;
+import okhttp3.OkHttpClient;
 
 import java.net.URISyntaxException;
 
@@ -14,6 +15,11 @@ public class ConnectionFailure {
         IO.Options options = new IO.Options();
         options.forceNew = true;
         options.reconnection = false;
+
+        final OkHttpClient client = new OkHttpClient();
+        options.webSocketFactory = client;
+        options.callFactory = client;
+
         final Socket socket = IO.socket("http://localhost:" + port, options);
         socket.on(Socket.EVENT_CONNECT_TIMEOUT, new Emitter.Listener() {
             @Override
@@ -24,6 +30,7 @@ public class ConnectionFailure {
             @Override
             public void call(Object... args) {
                 System.out.println("connect error");
+                client.dispatcher().executorService().shutdown();
             }
         }).on(Socket.EVENT_DISCONNECT, new Emitter.Listener() {
             @Override