Settings to be done for Apache/Tomcat for HTTP tunneling?

What are the settings that i need to do for Apache/Tomcat to run http tunneling over rmi.
Thanks in advance.

Hi thanks for reply.
i am trying to run the application which comes from sun doc(rmiservlethandler).
in one article i have found that we have to set up the Apache/Tomcat in order to rewrite the rmi-cgi call to the servlet.
i am not able to make run rmiservlethandler app. any tips for this app to run on Apache/Tomcat.

Similar Messages

Here is example code for HTTPS Tunneling through proxy(400 Lines of code

Here is the source for Https Tunneling that I have gotten working. It is based on Pua Yeow Cheong's JavaWorld Tip 111. Thanks to David Lord for providing the final breakthrough that I needed.
I have posted it here for anyone who wishes to use it. If you find any bugs, or write any improvements, please tack them onto the end of this thread.
I have been trying to tackle this problem for quite some time, so I hope this helps a few of you out there.
Lots of Luck,
nightmask.
<----- Begin Copy and Paste -------->
import java.net.*;
import java.io.*;
import java.security.*;
import sun.misc.BASE64Encoder;
import javax.net.*;
import javax.net.ssl.*;
* This example is based on JavaWorld Tip 111. Thanks to Pua Yeow Cheong for writing it.
* It tunnels through a proxy using the Https protocol.
* Thanks go to David Lord in the java forums for figuring out the main problem with Tip 111
* PLEASE NOTE: You need to have the JSSE 1.0.2 jars installed for this to work
* Downloads contents of a URL, using Proxy Tunneling and Basic Authentication
public class URLReader {
     * The main program for the URLReader class
    public static void main(String[] args) throws Exception {
        //set up strings for use in app. Change these to your own settings
        String proxyPassword = "password";
        String proxyUsername = "username";
        String proxyHost = "myproxy.com";
        String proxyPort = "3128";
        String connectionURL = "https://www.verisign.com";
        //set up system properties to indicate we are using a proxy
        System.setProperty("https.proxyHost", proxyHost);
        System.setProperty("https.proxyPort", proxyPort);
        System.setProperty("proxyHost", proxyHost);
        System.setProperty("proxyPort", proxyPort);
        System.setProperty("proxySet", "true");
        System.setProperty("http.proxyHost", proxyHost);
        System.setProperty("http.proxyPort", proxyPort);
        System.setProperty("http.proxySet", "true");
        //set up handler for jsse
        System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
        java.security.Provider prov = new com.sun.net.ssl.internal.ssl.Provider();
        Security.addProvider(prov);
        //create the connection
        URL myURL = new URL(connectionURL);
        URLConnection myConnection = myURL.openConnection();
        if (myConnection instanceof com.sun.net.ssl.HttpsURLConnection) {
            ((com.sun.net.ssl.HttpsURLConnection) myConnection).setSSLSocketFactory(new SSLTunnelSocketFactory(System.getProperty("proxyHost"), System.getProperty("proxyPort")));
        myConnection.setDoInput(true);
        myConnection.setDoOutput(true);
        BufferedReader in;
        try {
            System.err.println("opening Input stream1");
            in = new BufferedReader(
                    new InputStreamReader(
                    myConnection.getInputStream()));
            String inputLine;
            System.err.println("Input stream is Open1");
            while ((inputLine = in.readLine()) != null) {
                System.err.println(inputLine);
            in.close();
            System.err.println("Input stream is Closed1");
        } catch (Exception e) {
            e.printStackTrace(System.err);
            String tmp = e.getMessage().toLowerCase().trim();
            System.err.println("tmp *" + tmp + "*");
            if (tmp.indexOf("http") > -1) {
                //http error message to be parsed
                tmp = tmp.substring(tmp.indexOf("http")).trim();
                System.err.println("tmp *" + tmp + "*");
                tmp = tmp.substring(8).trim();
                System.err.println("tmp *" + tmp + "*");
                if (tmp.startsWith("407")) {
                    //proxy authentication required
                    myURL = new URL(connectionURL);
                    myConnection = myURL.openConnection();
                    if (myConnection instanceof com.sun.net.ssl.HttpsURLConnection) {
                        ((com.sun.net.ssl.HttpsURLConnection) myConnection).setSSLSocketFactory(new SSLTunnelSocketFactory(System.getProperty("proxyHost"), System.getProperty("proxyPort"), proxyUsername, proxyPassword));
                    myConnection.setDoInput(true);
                    myConnection.setDoOutput(true);
                    try {
                        System.err.println("opening Input stream 2");
                        in = new BufferedReader(
                                new InputStreamReader(
                                myConnection.getInputStream()));
                        String inputLine;
                        System.err.println("Input stream is Open 2");
                        while ((inputLine = in.readLine()) != null) {
                            System.out.println(inputLine);
                        in.close();
                        System.err.println("Input stream is closed 2");
                    } catch (Exception ex) {
                        System.err.println(ex.getMessage());
                        ex.printStackTrace(System.err);
* SSLSocket used to tunnel through a proxy
class SSLTunnelSocketFactory extends SSLSocketFactory {
    private String tunnelHost;
    private int tunnelPort;
    private SSLSocketFactory dfactory;
    private String tunnelPassword;
    private String tunnelUserName;
    private boolean socketConnected = false;
    private int falsecount = 0;
     * Constructor for the SSLTunnelSocketFactory object
     *@param proxyHost The url of the proxy host
     *@param proxyPort the port of the proxy
    public SSLTunnelSocketFactory(String proxyHost, String proxyPort) {
        System.err.println("creating Socket Factory");
        tunnelHost = proxyHost;
        tunnelPort = Integer.parseInt(proxyPort);
        dfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
     * Constructor for the SSLTunnelSocketFactory object
     *@param proxyHost      The url of the proxy host
     *@param proxyPort      the port of the proxy
     *@param proxyUserName username for authenticating with the proxy
     *@param proxyPassword password for authenticating with the proxy
    public SSLTunnelSocketFactory(String proxyHost, String proxyPort, String proxyUserName, String proxyPassword) {
        System.err.println("creating Socket Factory with password/username");
        tunnelHost = proxyHost;
        tunnelPort = Integer.parseInt(proxyPort);
        tunnelUserName = proxyUserName;
        tunnelPassword = proxyPassword;
        dfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
     * Sets the proxyUserName attribute of the SSLTunnelSocketFactory object
     *@param proxyUserName The new proxyUserName value
    public void setProxyUserName(String proxyUserName) {
        tunnelUserName = proxyUserName;
     * Sets the proxyPassword attribute of the SSLTunnelSocketFactory object
     *@param proxyPassword The new proxyPassword value
    public void setProxyPassword(String proxyPassword) {
        tunnelPassword = proxyPassword;
     * Gets the supportedCipherSuites attribute of the SSLTunnelSocketFactory
     * object
     *@return    The supportedCipherSuites value
    public String[] getSupportedCipherSuites() {
        return dfactory.getSupportedCipherSuites();
     * Gets the defaultCipherSuites attribute of the SSLTunnelSocketFactory
     * object
     *@return    The defaultCipherSuites value
    public String[] getDefaultCipherSuites() {
        return dfactory.getDefaultCipherSuites();
     * Gets the socketConnected attribute of the SSLTunnelSocketFactory object
     *@return    The socketConnected value
    public synchronized boolean getSocketConnected() {
        return socketConnected;
     * Creates a new SSL Tunneled Socket
     *@param s                         Ignored
     *@param host                      destination host
     *@param port                      destination port
     *@param autoClose                 wether to close the socket automaticly
     *@return                           proxy tunneled socket
     *@exception IOException           raised by an IO error
     *@exception UnknownHostException raised when the host is unknown
    public Socket createSocket(Socket s, String host, int port, boolean autoClose)
             throws IOException, UnknownHostException {
        Socket tunnel = new Socket(tunnelHost, tunnelPort);
        doTunnelHandshake(tunnel, host, port);
        SSLSocket result = (SSLSocket) dfactory.createSocket(tunnel, host, port, autoClose);
        result.addHandshakeCompletedListener(
            new HandshakeCompletedListener() {
                public void handshakeCompleted(HandshakeCompletedEvent event) {
                    System.out.println("Handshake Finished!");
                    System.out.println("\t CipherSuite :" + event.getCipherSuite());
                    System.out.println("\t SessionId: " + event.getSession());
                    System.out.println("\t PeerHost: " + event.getSession().getPeerHost());
                    setSocketConnected(true);
        // thanks to David Lord in the java forums for figuring out this line is the problem
        // result.startHandshake(); //this line is the bug which stops Tip111 from working correctly
        return result;
     * Creates a new SSL Tunneled Socket
     *@param host                      destination host
     *@param port                      destination port
     *@return                           tunneled SSL Socket
     *@exception IOException           raised by IO error
     *@exception UnknownHostException raised when the host is unknown
    public Socket createSocket(String host, int port)
             throws IOException, UnknownHostException {
        return createSocket(null, host, port, true);
     * Creates a new SSL Tunneled Socket
     *@param host                      Destination Host
     *@param port                      Destination Port
     *@param clientHost                Ignored
     *@param clientPort                Ignored
     *@return                           SSL Tunneled Socket
     *@exception IOException           Raised when IO error occurs
     *@exception UnknownHostException Raised when the destination host is
     *      unknown
    public Socket createSocket(String host, int port, InetAddress clientHost,
            int clientPort)
             throws IOException, UnknownHostException {
        return createSocket(null, host, port, true);
     * Creates a new SSL Tunneled Socket
     *@param host             destination host
     *@param port             destination port
     *@return                  tunneled SSL Socket
     *@exception IOException raised when IO error occurs
    public Socket createSocket(InetAddress host, int port)
             throws IOException {
        return createSocket(null, host.getHostName(), port, true);
     * Creates a new SSL Tunneled Socket
     *@param address          destination host
     *@param port             destination port
     *@param clientAddress    ignored
     *@param clientPort       ignored
     *@return                  tunneled SSL Socket
     *@exception IOException raised when IO exception occurs
    public Socket createSocket(InetAddress address, int port,
            InetAddress clientAddress, int clientPort)
             throws IOException {
        return createSocket(null, address.getHostName(), port, true);
     * Sets the socketConnected attribute of the SSLTunnelSocketFactory object
     *@param b The new socketConnected value
    private synchronized void setSocketConnected(boolean b) {
        socketConnected = b;
     * Description of the Method
     *@param tunnel           tunnel socket
     *@param host             destination host
     *@param port             destination port
     *@exception IOException raised when an IO error occurs
    private void doTunnelHandshake(Socket tunnel, String host, int port) throws IOException {
        OutputStream out = tunnel.getOutputStream();
        //generate connection string
        String msg = "CONNECT " + host + ":" + port + " HTTP/1.0\n"
                 + "User-Agent: "
                 + sun.net.www.protocol.http.HttpURLConnection.userAgent;
        if (tunnelUserName != null && tunnelPassword != null) {
            //add basic authentication header for the proxy
            sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
            String encodedPassword = enc.encode((tunnelUserName + ":" + tunnelPassword).getBytes());
            msg = msg + "\nProxy-Authorization: Basic " + encodedPassword;
        msg = msg + "\nContent-Length: 0";
        msg = msg + "\nPragma: no-cache";
        msg = msg + "\r\n\r\n";
        System.err.println(msg);
        byte b[];
        try {
            //we really do want ASCII7 as the http protocol doesnt change with locale
            b = msg.getBytes("ASCII7");
        } catch (UnsupportedEncodingException ignored) {
            //If ASCII7 isn't there, something is seriously wrong!
            b = msg.getBytes();
        out.write(b);
        out.flush();
        byte reply[] = new byte[200];
        int replyLen = 0;
        int newlinesSeen = 0;
        boolean headerDone = false;
        InputStream in = tunnel.getInputStream();
        boolean error = false;
        while (newlinesSeen < 2) {
            int i = in.read();
            if (i < 0) {
                throw new IOException("Unexpected EOF from Proxy");
            if (i == '\n') {
                headerDone = true;
                ++newlinesSeen;
            } else
                    if (i != '\r') {
                newlinesSeen = 0;
                if (!headerDone && replyLen < reply.length) {
                    reply[replyLen++] = (byte) i;
        //convert byte array to string
        String replyStr;
        try {
            replyStr = new String(reply, 0, replyLen, "ASCII7");
        } catch (UnsupportedEncodingException ignored) {
            replyStr = new String(reply, 0, replyLen);
        //we check for connection established because our proxy returns http/1.1 instead of 1.0
        if (replyStr.toLowerCase().indexOf("200 connection established") == -1) {
            System.err.println(replyStr);
            throw new IOException("Unable to tunnel through " + tunnelHost + ":" + tunnelPort + ". Proxy returns\"" + replyStr + "\"");
        //tunneling hanshake was successful
}<----- End Copy and Paste -------->

BTW, if you are using an implementation in which
the http/https implementation recognises
the java.net.Authenticator properly, you can use
that framework to do basic/digest authentication.
I think Sun's JDK 1.4 supports both basic
and digest for both proxies and the actual end
site you connect via http/https, but I haven't
tested it to be sure. I know it works
with http/basic at the end host.
Today's Ob hack:
import java.net.*;
import java.io.*;
class MyAuth extends Authenticator {
    protected PasswordAuthentication getPasswordAuthentication() {
        System.out.println("The realm '" + getRequestingPrompt() +
            "' at '" + getRequestingHost() + ":" + getRequestingPort() +
            "'\n" + "using " + getRequestingProtocol() + " is requesting " +
            getRequestingScheme().toUpperCase() + " authentication.");
        System.out.println("");
        System.out.println("What should we send them? Let's send them ...");
        System.out.println("");
        return new PasswordAuthentication("username", "password".toCharArray());    }
public class MyURL {
    public static void main(String[] args) throws Exception {
        // set to the authenticator you want to use.
        Authenticator.setDefault(new myAuth());
        URL url =
            new URL("http://www.some.com/something_protected/index.htm");
        BufferedReader in = new BufferedReader(
                                new InputStreamReader(
                                url.openStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
        in.close();

For http tunnel

hi dear to all
i am new to http tunneling.
i want to know how should i confignure the SSL between the webserver to database server. because i want to send/receiver the data from database. i want to know how should i configure the ssl in sever? is there any options for that? what r the softwares required for that? if it is not possible manually if write the code for SSL ; is it possible to keep between server and database. if u have the code please provide me.
thank u
regards
krishna

Hi krishna,
Why do you need to tunnel from App Server to Database?
Dont you use JDBC???
If not, are you using some kind of protocol to access data from Database? I know people use SOAP Messages in Web Services to access Database.
Please let us know what is your real requirement for us to understand your architecture more and give possible options.
Thanks and regards,
Pazhanikanthan. P

Unable to compile class for JSP. apache-tomcat-6. What could be wrong?

Hello, I am new to JSP and I am trying a very basic jsp and class file on Windows XP. I get the Unable to compile class for JSP.
Steps that I have done:
javac ch06_01.java , placed the ch06_01.class under
C:\Apps\apache-tomcat-6.0.16\webapps\ch06\WEB-INF\classes
Then grabbed the ch06_02.jsp and placed it under
C:\Apps\apache-tomcat-6.0.16\webapps\ch06\
When I run it (by placing this into Explorer or Firefox URL
http://localhost:8080/ch06/ch06_02.jsp) I get the error further
below. Things I have done and made sure they are in place are:
set up JAVA_HOME to C:\Apps\jdk1.6.0_06
Using CATALINA_BASE: C:\Apps\apache-tomcat-6.0.16
Using CATALINA_HOME: C:\Apps\apache-tomcat-6.0.16
Using CATALINA_TMPDIR: C:\Apps\apache-tomcat-6.0.16\temp
Using JRE_HOME: C:\Apps\jre1.6.0_06
I did a google on the error and I found people saying to place the
tools.jar from the jsk into the lib directory under CATALINA_HOME. But
the examples still don't work. What step could I be missing? Your help is greatly
appreciated.
This is the simple jsp file:
<%@ page import="ch06_01" %>
<HTML>
<HEAD>
<TITLE>Using a JavaBean</TITLE>
</HEAD>
<BODY>
<H1>Using a JavaBean</H1>
<% ch06_01 messager = new ch06_01(); %>
The message is: <%= messager.msg() %>
</BODY>
</HTML>
this is the simple ch6_01 java file:
public class ch06_01
public ch06_01()
public String msg()
return "Hello from JSP!";
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
The import ch06_01 cannot be resolved
An error occurred at line: 9 in the jsp file: /ch06_02.jsp
ch06_01 cannot be resolved to a type
6: <BODY>
7: <H1>Using a JavaBean</H1>
8:
9: <% ch06_01 messager = new ch06_01(); %>
10:
11: The message is: <%= messager.msg() %>
12:
An error occurred at line: 9 in the jsp file: /ch06_02.jsp
ch06_01 cannot be resolved to a type
6: <BODY>
7: <H1>Using a JavaBean</H1>
8:
9: <% ch06_01 messager = new ch06_01(); %>
10:
11: The message is: <%= messager.msg() %>
12:
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:316)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
Edited by: indikon1 on Jun 12, 2008 1:18 PM
I just updated the directories of the variables to reflect the current status of my system.

What is wrong is that you are using an "old" jsp tutorial :-)
Since Java 1.4, JSPs have been unable to access classes in the "default" package.
What you need to do:
Put the java class ch06_01 in a package.
Steps to do this
- Edit ch06_01 and add the following to the very top of the file (without the quotes): "package mypackage;"
- create a folder "mypackage"
- move ch06_01.java into that folder
- compile that class (now in the mypackage package)
- place ch06_01.class under C:\Apps\apache-tomcat-6.0.16\webapps\ch06\WEB-INF\classes\mypackage
In your jsp:
<%@ page import="mypackage.ch06_01" %>
I would suggest using a more up-to-date tutorial that uses JSTL.
Take a look at this [Apache Tomcat tutorial|http://www.coreservlets.com/Apache-Tomcat-Tutorial/index.html]

Use of servlet http tunneling for client server communication

Hello I am having a problem connecting a simple client applet to a server application. I can connect the two directly using sockets. However, when I try to connect the two via a servlet the input stream cannot be accessed. The application is purely for demonstration. Here is some of the source code
A servlet for http tunneling
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class SocketServlet extends HttpServlet
     ServletInputStream servletinput;
     ServletOutputStream servletoutput;
     Socket socket;
     DataOutputStream dataoutput;
     DataInputStream datainput;
     public SocketServlet()
public void init(ServletConfig servletconfig) throws ServletException
super.init(servletconfig);
log("Socket servlet initialized.");
     public void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
try
servletinput = request.getInputStream();
socket = new Socket( InetAddress.getByName( "127.0.0.1" ), 5000 );
dataoutput = new DataOutputStream( socket.getOutputStream() );
try
                    byte[] inbytes = new byte[1024];
                    servletinput.read( inbytes );
                    String inmessage = new String( inbytes );
                    dataoutput.writeBytes( inmessage );
catch(IOException ioex)
dataoutput.flush();
datainput = new DataInputStream( socket.getInputStream() );
servletoutput = response.getOutputStream();
try
byte[] outbytes = new byte[1024];
datainput.read( outbytes );
servletoutput.write( outbytes );
catch(IOException ioex)
servletoutput.flush();
servletoutput.close();
catch(Exception ex)
// Server.java
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Server extends JFrame {
private JTextField enter;
private JTextArea display;
DataOutputStream output;
DataInputStream input;
public Server()
super( "Server" );
Container c = getContentPane();
     enter = new JTextField();
     enter.setEnabled( false );
     c.add( enter, BorderLayout.SOUTH );
display = new JTextArea();
c.add( new JScrollPane( display ),
BorderLayout.CENTER );
setSize( 300, 150 );
show();
public void runServer()
ServerSocket server;
Socket connection;
int counter = 1;
try {
// Step 1: Create a ServerSocket.
server = new ServerSocket( 5000, 100 );
while ( true ) {
// Step 2: Wait for a connection.
display.setText( "Waiting for connection\n" );
connection = server.accept();
display.append( "Connection " + counter +
" received from: " +
connection.getInetAddress().getHostName() );
// Step 3: Get input and output streams.
output = new DataOutputStream(
connection.getOutputStream() );
input = new DataInputStream(
connection.getInputStream() );
display.append( "\nGot I/O streams\n" );
// Step 4: Process connection.
String message =
"SERVER>>> Connection successful";
output.writeBytes( message );
enter.setEnabled( true );
               display.append( "\nConnected\n" );
do {
try {
                    byte[] mess = new byte[1024];
input.read( mess );
display.append( "\n" + message );
display.setCaretPosition(
display.getText().length() );
               catch (IOException ioex )
} while ( !message.equals( "CLIENT>>> TERMINATE" ) );
// Step 5: Close connection.
display.append( "\nUser terminated connection" );
enter.setEnabled( false );
output.close();
input.close();
connection.close();
++counter;
catch ( EOFException eof ) {
System.out.println( "Client terminated connection" );
catch ( IOException io ) {
io.printStackTrace();
private void sendData( String s )
try {
output.writeBytes( "SERVER>>> " + s );
display.append( "\nSERVER>>>" + s );
catch ( IOException cnfex ) {
display.append(
"\nError writing object" );
public static void main( String args[] )
Server app = new Server();
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent e )
System.exit( 0 );
app.runServer();
// Fig. 21.4: Client.java
// Set up a Client that will read information sent
// from a Server and display the information.
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.zip.*;
public class Client extends Applet implements ActionListener {
private TextField enter;
private TextArea display;
DataOutputStream output;
DataInputStream input;
private Button button, button2;
URLConnection connection;
private byte[] bytes1, bytes2;
private String message, message2;
public void init()
setLayout( new BorderLayout() );
enter = new TextField( " Enter text here " );
enter.setEnabled( false );
enter.addActionListener( this );
add( enter, BorderLayout.NORTH );
display = new TextArea( 4, 30 );
     display.setEditable( false );
add( display, BorderLayout.CENTER );
     button = new Button( "Connect" );
     button.addActionListener( this );
     add( button, BorderLayout.SOUTH );
public void runClient()
Socket client;
try {
// Step 1: Create a Socket to make connection.
display.setText( "Attempting connection\n" );
          URL currentpage = getCodeBase();
          String protocol = currentpage.getProtocol();
          String host = currentpage.getHost();
          int port = 8100;
          String urlsuffix = "/servlet/SocketServlet";
          URL dataurl = new URL( "http://localhost:8100/servlet/SocketServlet" );
          connection = dataurl.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-type", "application/octet-stream");
          connection.setUseCaches( false );
          display.append( "\nConnected to: " + host );
// Step 2: Get the output streams.
output = new DataOutputStream(
connection.getOutputStream() );
          display.append( "\n got output stream\n" );
          // Step 3 get input connection
          try
          display.append( "\nAttempting to connect to input stream\n" );
               input = new DataInputStream( connection.getInputStream() );
               bytes1 = new byte[1024];
               input.readFully( bytes1 );
               display.append( "\nGot input stream\n" );
               message = new String( bytes1 );
               display.append( "\n" + message + "\n" );
          catch ( IOException ioex )
          // Step 3: Process connection.
          enter.setEnabled( true );
          do {
          try {
bytes2 = new byte[1024];
          input.readFully( bytes2 );
          message2 = new String( bytes2 );
          display.append( "\n" + message2 );
          display.setCaretPosition(
          display.getText().length() );
          catch ( IOException ioex ) {
          display.append(
          "\nUnknown object type received" );
          } while ( !message.equals( "SERVER>>> TERMINATE" ) );
// Step 4: Close connection.
display.append( "Closing connection.\n" );
output.close();
input.close();
     catch (MalformedURLException mfe )
catch ( EOFException eof ) {
System.out.println( "Server terminated connection" );
catch ( IOException e ) {
e.printStackTrace();
private void sendData( String s )
try {
message = s;
output.writeBytes( "CLIENT>>> " + s );
display.append( "\nCLIENT>>>" + s );
catch ( IOException cnfex ) {
display.append(
"\nError writing object" );
public void actionPerformed( ActionEvent e )
     if ( e.getActionCommand() == "Connect" )
          runClient();
     else
          sendData( e.getActionCommand() );
public static void main(String args[])
Frame f = new Frame("Chat Client");
     Client c = new Client();
     c.init();
     f.add("Center", c);
     f.setSize(300, 150);
     f.show();
the connection appears to fail at client step 3, any help is super, thanks
Aidan

Hi,
In your client you are trying to open OutputStream even though you are not using it.
So there are two solutions here.
1. If you dont need OutputStream your code shoud look like this
try {
// Step 1: Create a Socket to make connection.
display.setText( "Attempting connection\n" );
URL currentpage = getCodeBase();
String protocol = currentpage.getProtocol();
String host = currentpage.getHost();
int port = 8100;
String urlsuffix = "/servlet/SocketServlet";
URL dataurl = new URL( "http://localhost:8100/servlet/SocketServlet" );
connection = dataurl.openConnection();
//connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-type", "application/octet-stream");
connection.setUseCaches( false );
display.append( "\nConnected to: " + host );
// Step 2: Get the output streams.
//output = new DataOutputStream(
//connection.getOutputStream() );
//display.append( "\n got output stream\n" );
display.append( "\n Not interested in output stream\n" );
//Step 3 Inpustream related
// Step 4: Close connection.
display.append( "Closing connection.\n" );
//output.close();
input.close();
1. If you need OutputStream, close your OutputStream before even trying to get InputStream, your code should like this
try {
// Step 1: Create a Socket to make connection.
display.setText( "Attempting connection\n" );
URL currentpage = getCodeBase();
String protocol = currentpage.getProtocol();
String host = currentpage.getHost();
int port = 8100;
String urlsuffix = "/servlet/SocketServlet";
URL dataurl = new URL( "http://localhost:8100/servlet/SocketServlet" );
connection = dataurl.openConnection();
//connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-type", "application/octet-stream");
connection.setUseCaches( false );
display.append( "\nConnected to: " + host );
// Step 2: Get the output streams.
output = new DataOutputStream(
connection.getOutputStream() );
display.append( "\n got output stream\n" );
//I'll do whateve I've to do with outputstream
//done with output stream closing
output.close();
//Step 3 Inpustream related
// Step 4: Close connection.
display.append( "Closing connection.\n" );
//output.close();
input.close();
hope this works
all the best,
Raj

Apache Tomcat and eclipse for EP

Hi,
I have got anew book on SAP Enterprise protal by SAP Press.
There is also a CD which contains Portal development kit, eclipse 2.1, apache tomcat 3.3.1 and portal development kit plug-in for eclipse.
I don't have any SAP Access as if now.
Is it possible to learn SAP EP programming based on the softwares I have got on these CD and the book.
Tushar

Tushur, yes you can use that software to learn how to code JSPDynPage applications for the portal. This is how I started learning portal technology. I have since moved on to webdynpro. You might consider, as Srinivas suggested, download the Sneak Preview of WAS 6.40 java. This will give you a complete development envirnment, the NWDS, the portal, and the WAS to run it on. Next thing you now, you'll be writing webdynpro apps like the best of em.
Regards,
Rich Heilman

Setting up Apache Tomcat 4.0 for hosting a webpage

Hi, I am trying to setup an Apache Tomcat 4.0 web server for hosting on my computer through a verizon DSL connection, and a DI-604 router, and a program called no-ip (http://www.no-ip.com) that is supposed to allow you to host a web server from your home computer using dynamic ip addresses I can't seem to get it to work,
I can reach the server though http://localhost/
I can reach the server though http://127.0.0.1/
I can't reach the server though http://leeand00.servehttp.com/
which is the address IM supposed to access it though on no-ip.
When I ping leeand00.servehttp.com it returns 100% of the packets, I think it must have something to do with the ports, and I know I can't use port 80 because it's blocked by verizon.
Thanks in advance,
Maskkkk

Like what I java application?
or a servlet/JSP web application?
I'm confused....
Hi,
localhost and 127.0.0.1 are basically the same. So
So try creating an application and connecting through
http://localhost/aplication_name
If this does not work, then you need to check your
ur configuration out, and most of this is done in the
conf/server.xml file
kev

While downloading software update for Itunes, getting message saying detecting Ipad in recovery mode and telling us to restore Ipad to original settings, which we don't want to do. Also cannot turn on Ipad; shows Itunes symbol with connector. Help!

While downloading software update for Itunes, got message saying detecting Ipad in recovery mode and telling us to restore Ipad to original settings, which we don't want to do. Also cannot turn on Ipad; shows Itunes symbol with connector. Help!

No promises but a System Reset is worth trying:
Hold down the on/off switch and the Home button simultaneously until you see the Apple logo. Ignore the "Slide to power off" text if it appears.
A System Reset does not remove any apps, music, movies, etc. nor does it cause any settings to revert back to default.
Also, you might wish to download the iPad-2 User Guide. Pay special attention to page 162. Note that this Guide also applies to the iPad-1 with IOS 4.3 except for those functions that are not supported by the hardware.
http://support.apple.com/manuals/#ipad
Finally, the User Guide can be downloaded at no charge via iBooks and a less comprehensive version of the Guide is included as a Safari bookmark.

Cannot connect to Net, have done for last 12 months no problem, I have other apple products that are connecting to the same hub happily. The hub is seen and the signal is strong, it just doesn't connect. I have reset the network settings with no joy.

cannot connect to Net, have done for last 12 months no problem, I have other apple products that are connecting to the same hub happily. The hub is seen and the signal is strong, it just doesn't connect. I have reset the network settings with no joy. Any help much appreciated?

Try restarting your WiFi router by removing power to it for 30 seconds.

Apache Tomcat 7.0.4 can't recognize the classpath for .jar files

Hiii Everybody,
I have a weird problem. I am trying to develop a simple application where I am trying to pass an excel file name as an argument to a method and the method creates a copy of the specified file. I have used jxl.jar for excel file manipulation. During this I have faced two problems.......
1) I tried to compile the file CopyExcel.java in the command prompt(windows), sometimes the file is not compiled and the error shown indicates that it can't recognize the package jxl. But if I close the command prompt window and open it again.... I could compile the CopyExcel.java succesfully with no error.
2) Even if I have compiled the CopyExcell.java file successfully, whenever I am tryiyng to call a method copyMain() inside it, browser shows....
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
root cause
java.lang.NoClassDefFoundError: jxl/Workbook
     CopyExcel.copy(CopyExcel.java:39)
     CopyExcel.copyMain(CopyExcel.java:81)
     ServicePage.processRequest(ServicePage.java:28)
     ServicePage.doPost(ServicePage.java:73)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
java.lang.ClassNotFoundException: jxl.Workbook
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1672)
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1517)
     java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
     CopyExcel.copy(CopyExcel.java:39)
     CopyExcel.copyMain(CopyExcel.java:81)
     ServicePage.processRequest(ServicePage.java:28)
     ServicePage.doPost(ServicePage.java:73)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.4 logs.
--------------------------------------------------------------------------------The code for CopyExcel.java is as folows.............
* To change this template, choose Tools | Templates
* and open the template in the editor.
* @author Administrator
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.io.File;
import java.io.IOException;
import jxl.Cell;
//import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
import jxl.write.WritableWorkbook;
public class CopyExcel {
     private String inputFile;
     public void setInputFile(String inputFile) {
          this.inputFile = inputFile;
     public void copy() throws IOException {
          File inputWorkbook = new File(inputFile);
          Workbook w;
                try{
                    System.out.println("Before w= Workbook.getWorkbook(inputWorkbook); ");
          w= Workbook.getWorkbook(inputWorkbook);
                 System.out.println("After w= Workbook.getWorkbook(inputWorkbook); ");
          WritableWorkbook copy=Workbook.createWorkbook(new File("CopyPan.xls"), w);
                copy.write();
                copy.close();
                }catch(Exception e){}
/*          try {
               w = Workbook.getWorkbook(inputWorkbook);
               // Get the first sheet
               Sheet sheet = w.getSheet(0);
               // Loop over first 10 column and lines
                    for (int i = 1; i < 6; i++) {
                         Cell cell = sheet.getCell(0, i);
                         //CellType type = cell.getType();
                         //if (cell.getType() == CellType.LABEL) {
                              //System.out.println("I got a label "
                                   //     + cell.getContents());
                         //if (cell.getType() == CellType.NUMBER) {
                              //System.out.println("I got a number "
                                        //+ cell.getContents());
                                                System.out.println(cell.getContents());
          } catch (BiffException e) {
               e.printStackTrace();
     public static String copyMain(String args) throws IOException {
          String str=args;
          CopyExcel test = new CopyExcel();
          test.setInputFile(args);
          test.copy();
                return "Success";
}I have set the "CLASSPATH" environment variables in "user variables for administrator" as follows,
.;%SYSTEM%;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\bin;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\lib\servlet-api.jar;C:\Program Files\Java\jdk1.6.0_11\lib\jxl-2.6.jar Also I have tried editing the startup MS-dos batch file as folows....
set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_11
set CLASSPATH=.;%SYSTEM%;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\bin;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\lib\servlet-api.jar;C:\Program Files\Java\jdk1.6.0_11\lib\jxl-2.6.jar
@echo off
rem Licensed to the Apache Software Foundation (ASF) under one or more
rem contributor license agreements. See the NOTICE file distributed with
rem this work for additional information regarding copyright ownership.
rem The ASF licenses thi..........But the problem remained...........
Plz. help me.
Thank u in advance for any help.

Hiii Everybody,
I have a weird problem. I am trying to develop a simple application where I am trying to pass an excel file name as an argument to a method and the method creates a copy of the specified file. I have used jxl.jar for excel file manipulation. During this I have faced two problems.......
1) I tried to compile the file CopyExcel.java in the command prompt(windows), sometimes the file is not compiled and the error shown indicates that it can't recognize the package jxl. But if I close the command prompt window and open it again.... I could compile the CopyExcel.java succesfully with no error.
2) Even if I have compiled the CopyExcell.java file successfully, whenever I am tryiyng to call a method copyMain() inside it, browser shows....
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
root cause
java.lang.NoClassDefFoundError: jxl/Workbook
     CopyExcel.copy(CopyExcel.java:39)
     CopyExcel.copyMain(CopyExcel.java:81)
     ServicePage.processRequest(ServicePage.java:28)
     ServicePage.doPost(ServicePage.java:73)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
java.lang.ClassNotFoundException: jxl.Workbook
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1672)
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1517)
     java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
     CopyExcel.copy(CopyExcel.java:39)
     CopyExcel.copyMain(CopyExcel.java:81)
     ServicePage.processRequest(ServicePage.java:28)
     ServicePage.doPost(ServicePage.java:73)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.4 logs.
--------------------------------------------------------------------------------The code for CopyExcel.java is as folows.............
* To change this template, choose Tools | Templates
* and open the template in the editor.
* @author Administrator
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.io.File;
import java.io.IOException;
import jxl.Cell;
//import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
import jxl.write.WritableWorkbook;
public class CopyExcel {
     private String inputFile;
     public void setInputFile(String inputFile) {
          this.inputFile = inputFile;
     public void copy() throws IOException {
          File inputWorkbook = new File(inputFile);
          Workbook w;
                try{
                    System.out.println("Before w= Workbook.getWorkbook(inputWorkbook); ");
          w= Workbook.getWorkbook(inputWorkbook);
                 System.out.println("After w= Workbook.getWorkbook(inputWorkbook); ");
          WritableWorkbook copy=Workbook.createWorkbook(new File("CopyPan.xls"), w);
                copy.write();
                copy.close();
                }catch(Exception e){}
/*          try {
               w = Workbook.getWorkbook(inputWorkbook);
               // Get the first sheet
               Sheet sheet = w.getSheet(0);
               // Loop over first 10 column and lines
                    for (int i = 1; i < 6; i++) {
                         Cell cell = sheet.getCell(0, i);
                         //CellType type = cell.getType();
                         //if (cell.getType() == CellType.LABEL) {
                              //System.out.println("I got a label "
                                   //     + cell.getContents());
                         //if (cell.getType() == CellType.NUMBER) {
                              //System.out.println("I got a number "
                                        //+ cell.getContents());
                                                System.out.println(cell.getContents());
          } catch (BiffException e) {
               e.printStackTrace();
     public static String copyMain(String args) throws IOException {
          String str=args;
          CopyExcel test = new CopyExcel();
          test.setInputFile(args);
          test.copy();
                return "Success";
}I have set the "CLASSPATH" environment variables in "user variables for administrator" as follows,
.;%SYSTEM%;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\bin;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\lib\servlet-api.jar;C:\Program Files\Java\jdk1.6.0_11\lib\jxl-2.6.jar Also I have tried editing the startup MS-dos batch file as folows....
set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_11
set CLASSPATH=.;%SYSTEM%;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\bin;C:\Program Files\Apache Software Foundation\apache-tomcat-7.0.4\lib\servlet-api.jar;C:\Program Files\Java\jdk1.6.0_11\lib\jxl-2.6.jar
@echo off
rem Licensed to the Apache Software Foundation (ASF) under one or more
rem contributor license agreements. See the NOTICE file distributed with
rem this work for additional information regarding copyright ownership.
rem The ASF licenses thi..........But the problem remained...........
Plz. help me.
Thank u in advance for any help.

When i go to Settings- Store, i don't have an "automatic download" for music. How can i fix this?

When i go to Settings->Store, i don't have an "automatic download" for music. How can i fix this?

Not all features of automatic downloads are available in all countries. See this article for a list of countries that shows what content is available.
http://support.apple.com/kb/ts3599

Latest versions of Apache/Tomcat for BO65SP3

What are the latest versions of Apache/Tomcat that can be used with Business Objects 6.5 sp3 i.e. are particular Apache/Tomcat versions bundled with a Business Objects release
We have had doubts cast over the security features of the versions of Apaceh/Tomcat we use and need to know whether we can use later versions of Apache/Tomcat, whilst retaining existing version of Business Objects 6.5.3 ?

bundled with Tomcat 5.5.25
Supported with up to Tomcat 6.0.18
check this doc :http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/4079f8f6-2b49-2d10-d790-bc596012dc25

Error "Part1 will not be done for the excess GR quantity" in STO GRN

Hi,
While posting STO grn the error message is displayed "Part1 will not be done for the excess GR quantity".
We have checked CIN settings for Excise groups, the "GRs per EI" is maintained as "2 Multiple goods receipt, multiple credit".
In J1ID, for materials it is already maintained as "2 Multiple goods receipt, multiple credit".
No partial GR is posted for the delivery.
Still system is throwing the error message "Part1 will not be done for the excess GR quantity".

Hi,
Please provide the following for a clear picture.
1. PO qty
2. Quantity invoiced by the supplying plant
3. Quantity you are mentioning in GR
Regards,
Siva

What are the best settings to export video for Blip.tv?

I have CS5.5 and Adobe Premiere Pro.
Their suggestions are anything but helpful for Adobe:
http://support.blip.tv/entries/344530-how-should-i-export-my-videos-fo r-blip-tv
Thing is, I had Premiere Elements 8 and 10, which both had no issues with making and uploading MPGs, but Pro's settings are... well, I'd call them "messed up". Part of the issue might be that Elements and Pro ands unforgiveably disimilar in too many aspects (I'd argue 8 was functionally better than 10). Why are settings seemingly unavailable, or completely different? I wasted an entire day, rendering the same video in different formats, because Pro didn;t have the same available settings as I could with Elements 10.
Regardless of my complaints. The question is still this: What settings should I use for esporting videos to Blip.tv? The answer never really gets answered over there, but I am asking there too.
Ultimately, I'm sending MP4 videos, and they are absolutely fine on my computer, but are squished over there. So if anyone else has any more experience with Blip.tv, maybe they can answer it. They don;t seem to like Adobe/PC software much to care to give settings.
-Fes

Try a YT or Vimeo preset, adjust framerate accordently
I do not understand their field suggestions. Web is always no fields regardles the source.

I don't understand the following error on apache tomcat

Good afternoon!
I am using tomcat 6.0.13.When i try to perform my servlet, the following exception is gone off :
exception
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:595)
root cause
java.lang.NoClassDefFoundError: mypackage/Transportadora (wrong name: Transportadora)
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:595)
Would be this a problem in the definition of the class?
web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlnssi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Transportadora </display-name>
<description>
Projeto Transportadora
</description>
<servlet>
<servlet-name>Transportadora</servlet-name>
<servlet-class>mypackage.Transportadora</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Transportadora</servlet-name>
<url-pattern>/transp</url-pattern>
</servlet-mapping>
</web-app>
A great one I hug and grateful for the attention!
Message was edited by:
tarssa
Message was edited by:
tarssa
Message was edited by:
tarssa

java.lang.NoClassDefFoundError: mypackage/Transportadora (wrong name: Transportadora) You need to make sure all your classes are in the classpath and/or you need to make sure you're calling the class by its correct name.

Settings to be done for Apache/Tomcat for HTTP tunneling?

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