TCP IP monitor web services

Hi,

I am working on below exmple
http://www.mkyong.com/webservices/jax-ws/how-to-trace-soap-message-in-eclipse-ide/

http://maksim.sorokin.dk/it/2011/01/20/jax-ws-web-services-maven-tomcat/


tcp ip monitor not showing request and response for my helloworld example.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
  id="WebApp_ID" version="2.5">
  
  <display-name>jaxwsExample</display-name>

  <listener>
    <listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>helloWs</servlet-name>
    <servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>helloWs</servlet-name>
    <url-pattern>/HelloWs</url-pattern>
  </servlet-mapping>
  <session-config>
    <session-timeout>120</session-timeout>
  </session-config>
</web-app>

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why helloWS defined as servlet in web.xml even though it is not a servlet?

package jaxwsExample.ws;

import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.Style;

@WebService
@SOAPBinding(style = Style.RPC)
public class HelloWs {

  public String sayHello(String name) {
    if (name == null) {
      return "Hello";
    }

    return "Hello, " + name + "!";
  }
}

what is importance of below file?

<?xml version="1.0" encoding="UTF-8"?>
<endpoints xmlns="http://java.sun.com/xml/ns/jax-ws/ri/runtime" version="2.0">
  <endpoint name="HelloWs" implementation="jaxwsExample.ws.HelloWs" url-pattern="/HelloWs" />
</endpoints>

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 please advise
tcp1.png
tcp2.png
tcp3.png