INTSAMPLES-4 Add Simple Telnet Server to Sample

basic/tcp-client-server/readme.txt

@@ -5,4 +5,24 @@ Gateway -> Channel -> TcpOutboundGateway -> <===Socket===> -> TcpInboundGateway
 The service returns a response which the inbound gateway sends back over the socket to the outbound gateway
 and the result is returned to the client that invoked the original SimpleGateway method. 
 
-To run sample simply execute a test case in org.springframework.integration.samples.tcpclientservice package
+To run sample simply execute a test case in org.springframework.integration.samples.tcpclientservice package.
+
+
+In addition, a simple telnet server is provided; see TelnetServer in src/main/java. Run this class as a
+java application and then use telnet to connect to the service ('telnet localhost 11111'). 
+
+Messages sent will be returned, preceded by 'echo:'.
+
+
+$ telnet localhost 11111
+Trying 127.0.0.1...
+Connected to localhost.
+Escape character is '^]'.
+Hello world!
+echo:Hello world!
+Test
+echo:Test
+^]
+
+telnet> quit
+Connection closed.

basic/tcp-client-server/src/main/java/org/springframework/integration/samples/tcpclientserver/TelnetServer.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2002-2010 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;
+
+import org.springframework.context.support.AbstractApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+/**
+ * The configured inbound gateway uses CRLF delimited messages which means
+ * it works fine as a very simple Telnet server - connect using
+ * telnet localhost 11111 - each time you hit enter you should see your input
+ * echoed back, preceded by 'echo:'.
+ * 
+ * @author Gary Russell
+ *
+ */
+public class TelnetServer {
+
+	public static void main(String[] args) throws Exception {
+		new ClassPathXmlApplicationContext("/META-INF/spring/integration/tcpClientServerDemo-context.xml");
+		System.out.println("Press Enter/Return in the console to exit");
+		System.in.read();
+		System.exit(0);
+	}
+
+}

basic/tcp-client-server/src/main/resources/log4j.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
+<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
+
+	<!-- Appenders -->
+	<appender name="console" class="org.apache.log4j.ConsoleAppender">
+		<param name="Target" value="System.out" />
+		<layout class="org.apache.log4j.PatternLayout">
+			<param name="ConversionPattern" value="%-5p: %c - %m%n" />
+		</layout>
+	</appender>
+
+	<!-- Loggers -->
+	<logger name="org.springframework">
+		<level value="warn" />
+	</logger>
+
+	<logger name="org.springframework.integration.samples">
+		<level value="debug" />
+	</logger>
+
+	<!-- Root Logger -->
+	<root>
+		<priority value="warn" />
+		<appender-ref ref="console" />
+	</root>
+	
+</log4j:configuration>