Merge pull request #56 from garyrussell/INTSAMPLES-76-4

* garyrussell-INTSAMPLES-76-4:
  INTSAMPLES-76 Wait for Server (Intermediate)

intermediate/tcp-client-server-multiplex/src/test/java/org/springframework/integration/samples/tcpclientserver/TcpClientServerDemoTest.java

@@ -23,11 +23,14 @@ import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.task.SimpleAsyncTaskExecutor;
 import org.springframework.core.task.TaskExecutor;
+import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
+import org.springframework.integration.samples.tcpclientserver.support.ServerUtils;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
@@ -50,6 +53,14 @@ public class TcpClientServerDemoTest {
 	@Autowired
 	SimpleGateway gw;
 
+	@Autowired
+	AbstractServerConnectionFactory crLfServer;
+
+	@Before
+	public void setup() {
+		ServerUtils.waitListening(this.crLfServer);
+	}
+
 	@Test
 	public void testHappyDay() {
 		String result = gw.send("999Hello world!"); // first 3 bytes is correlationid

intermediate/tcp-client-server-multiplex/src/test/java/org/springframework/integration/samples/tcpclientserver/support/ServerUtils.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2002-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.integration.samples.tcpclientserver.support;
+
+import static org.junit.Assert.fail;
+
+import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
+
+/**
+ * @author Gary Russell
+ *
+ */
+public class ServerUtils {
+
+	public static void waitListening(AbstractServerConnectionFactory serverConnectionFactory) {
+		int n = 0;
+		while (!serverConnectionFactory.isListening()) {
+
+			try {
+				Thread.sleep(100);
+			} catch (InterruptedException e1) {
+				Thread.currentThread().interrupt();
+				throw new IllegalStateException(e1);
+			}
+
+			if (n++ > 100) {
+				fail("Server didn't begin listening.");
+			}
+		}
+	}
+
+}