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

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();

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.

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

Get InitialContext for P4-connection via Http tunneling

Hi,
I have to use an Http tunnel to access my integration J2EE engine.
Now, I want to create a P4-connection. It doesn't work. No InitialContext will be returned.
I can open the VisualAdmin on the http tunneling port. But in the connection GUI I can select 'Http tunneling' as connection type. Is there any setting, i.e. property, for the InitialContext to signal that Http tunneling should be used ?
Regards,
Astrid

Hi Astrid,
yes, you need ot use TransportLayerQueue property of the InitialContext to specify that you need Http Tunneling as the transport layer. See <a href="http://help.sap.com/saphelp_nw04/helpdata/en/c8/5bc0417951cf17e10000000a155106/frameset.htm">this</a> page for description.
Did you use that already?
Regards,
Ivo

Http tunneling (t3 over http) doesn't work!! (examples too)

Hi,
I'm trying to get http tunneling (t3 connection over http protocol) to work. I
ran some examples included with Weblogic that try establishing that connection
(PingTest, HelloApplet, SimpleT3Client), as well as my own test program, and they
all give an error similar to this :
Couldn't get a reference to server. Exception :
javax.naming.CommunicationException. Root exception is java.net.ConnectException:
No server found at HTTP://<IP>:<port>
at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:161) at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:200)
at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java,
Compiled Code) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:148)
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:123)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671) at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:242) at javax.naming.InitialContext.init(InitialContext.java:218)
at javax.naming.InitialContext.<init>(InitialContext.java:194)
(I replaced the actual Ip and port with <IP> and <port>).
Now, the server is started and working at that ip and port - it services web http
requests correctly, etc. Regular T3 connection (not over http) also works with
it.
Does anyone know the reason for this problem and/or how to fix it?
Thanks, Leonid Portnoy

It appears that one has to use the "Java Plugin" for this mode to work. The
question is does the version of plugin need to be "in sync" with the JVM
version on the server. ?.
/rk
"Adomas Svirskas" <[email protected]> wrote in message
news:[email protected]...
>
It seems that the solution is to have these two lines in the
properties file:
weblogic.httpd.enable=true
weblogic.httpd.tunnelingenabled=true
Now it works.
Thanks,
Adomas
"Adomas Svirskas" <[email protected]> wrote:
Hi Leonid,
Have you found a solution for this? I have these problems too.
Thanks,
Adomas
"Leonid Portnoy" <[email protected]> wrote:
Hi,
I'm trying to get http tunneling (t3 connection over http protocol)to
work. I
ran some examples included with Weblogic that try establishing thatconnection
(PingTest, HelloApplet, SimpleT3Client), as well as my own test program,
and they
all give an error similar to this :
Couldn't get a reference to server. Exception :
javax.naming.CommunicationException. Root exception is
java.net.ConnectException:
No server found at HTTP://<IP>:<port>
at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:161) atweblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:200)
atweblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java,
Compiled Code) atweblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java:148)
atweblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFact
ory.java:123)
atjavax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671)
at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:242)
at javax.naming.InitialContext.init(InitialContext.java:218)
at javax.naming.InitialContext.<init>(InitialContext.java:194)
(I replaced the actual Ip and port with <IP> and <port>).
Now, the server is started and working at that ip and port - it services
web http
requests correctly, etc. Regular T3 connection (not over http) alsoworks
with
it.
Does anyone know the reason for this problem and/or how to fix it?
Thanks, Leonid Portnoy

Help needed in HTTP Tunneling - urgent

Hi all,
I urgently need a working code sample of a client which sends requests to a server that redirects the request to an RMI server via RMI servlet.
Does any of you familiar of such a code sample?
Thanks

I'm sorry, but HTTP Tunneling is not working for me. I must have done something wrong.
Let me describe my configuration:
I have a server behind NAT router which connected to apache2 and tomcat 4.1 web servers. The apache2 and tomcat are not connected between them.
I deployed war file on tomcat which contains the servlet for the HTTP Tunneling which its code is:
public class RmiHttpTunnelerServlet extends HttpServlet
    public void init(ServletConfig config) throws ServletException
        super.init(config);
        System.out.println("Simplified RMI Servlet Handler loaded successfully.");
    public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
        try
            String queryString = req.getQueryString();
            String command, param;
            int delim = queryString.indexOf("=");
            if (delim == -1)
                command = queryString;
                param = "";
            else
                command = queryString.substring(0, delim);
                param = queryString.substring(delim + 1);
            if (command.equalsIgnoreCase("forward"))
                try
                    ServletForwardCommand.execute(req, res, param);
                catch (ServletClientException e)
                    returnClientError(res, "client error : " + e.getMessage( ));
                    e.printStackTrace();
                catch (ServletServerException e)
                    returnServerError(res, "internal server error : " + e.getMessage());
                    e.printStackTrace();
            else
                returnClientError(res, "invalid command: " + command);
        catch (Exception e)
            returnServerError(res, "internal error: " + e.getMessage());
            e.printStackTrace();
    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
        returnClientError(res, "GET Operation not supported: Can only forward POST requests.");
    public void doPut(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
        returnClientError(res, "PUT Operation not supported: Can only forward POST requests.");
    public String getServletInfo()
        return "Simplified RMI Call Forwarding Servlet Servlet.<br>\n ";
    private static void returnClientError(HttpServletResponse res, String message) throws IOException
        res.sendError(HttpServletResponse.SC_BAD_REQUEST,
                      "<HTML><HEAD><TITLE>Java RMI Client Error < / TITLE > < / HEAD > < BODY > " +
                      "<H1>Java RMI Client Error</H1>" + message + "</BODY></HTML>");
        System.err.println(HttpServletResponse.SC_BAD_REQUEST + "Java RMI Client Error" + message);
    private static void returnServerError(HttpServletResponse res,
                                          String message) throws IOException
        res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                      "<HTML><HEAD>< TITLE > Java RMI Server Error < / TITLE > < / HEAD > < BODY > " +
                      "<H1>Java RMI Server Error < / H1 > " + message + " < / BODY > < / HTML > ");
        System.err.println(HttpServletResponse.SC_INTERNAL_SERVER_ERROR + "Java RMI Server Error : " + message);
    }There is also a utility class:
public class ServletForwardCommand {
    public static void execute(HttpServletRequest request, HttpServletResponse response, String stringifiedPort)
        throws ServletClientException, ServletServerException, IOException {
        int port = convertStringToPort(stringifiedPort);
        Socket connectionToLocalServer = null;
        try {
            connectionToLocalServer = connectToLocalServer(port);
            forwardRequest(request, connectionToLocalServer);
            forwardResponse(response, connectionToLocalServer);
        } finally {
            if (null != connectionToLocalServer) {
                connectionToLocalServer.close();
    private static int convertStringToPort(String stringfiedPort) throws ServletClientException {
        int returnValue;
        try {
            returnValue = Integer.parseInt(stringfiedPort);
        } catch (NumberFormatException e) {
            throw new ServletClientException("invalid port number: " + stringfiedPort);
        if (returnValue <= 0 || returnValue > 0xFFFF) {
            throw new ServletClientException("invalid port: " + returnValue);
        if (returnValue < 1024) {
            throw new ServletClientException("permission denied for port: " + returnValue);
        return returnValue;
    private static Socket connectToLocalServer(int port) throws ServletServerException {
        Socket returnValue;
        try {
            returnValue = new Socket(InetAddress.getLocalHost(), port);
        } catch (IOException e) {
            throw new ServletServerException("could not connect to " + "local port");
        return returnValue;
    private static void forwardRequest(HttpServletRequest request, Socket connectionToLocalServer)
        throws IOException, ServletClientException, ServletServerException {
        byte buffer[];
        DataInputStream clientIn = new DataInputStream(request.getInputStream());
        buffer = new byte[request.getContentLength()];
        try {
            clientIn.readFully(buffer);
        } catch (EOFException e) {
            throw new ServletClientException("unexpected EOF " + "reading request body");
        } catch (IOException e) {
            throw new ServletClientException("error reading request" + " body");
        DataOutputStream socketOut = null;
        // send to local server in HTTP
        try {
            socketOut = new DataOutputStream(connectionToLocalServer.getOutputStream());
            socketOut.writeBytes("POST / HTTP/1.0\r\n");
            socketOut.writeBytes("Content-length: " + request.getContentLength() + "\r\n\r\n");
            socketOut.write(buffer);
            socketOut.flush();
        } catch (IOException e) {
            throw new ServletServerException("error writing to server");
    private static void forwardResponse(HttpServletResponse response, Socket connectionToLocalServer)
        throws IOException, ServletClientException, ServletServerException {
        byte[] buffer;
        DataInputStream socketIn;
        try {
            socketIn = new DataInputStream(connectionToLocalServer.getInputStream());
        } catch (IOException e) {
            throw new ServletServerException("error reading from " + "server");
        String key = "Content-length:".toLowerCase();
        boolean contentLengthFound = false;
        String line;
        int responseContentLength = -1;
        do {
            try {
                line = socketIn.readLine();
            } catch (IOException e) {
                throw new ServletServerException("error reading from server");
            if (line == null) {
                throw new ServletServerException("unexpected EOF reading server response");
            if (line.toLowerCase().startsWith(key)) {
                responseContentLength = Integer.parseInt(line.substring(key.length()).trim());
                contentLengthFound = true;
        while ((line.length() != 0) &&
            (line.charAt(0) != '\r') && (line.charAt(0) != '\n'));
        if (!contentLengthFound || responseContentLength < 0)
            throw new ServletServerException("missing or invalid content length in server response");
        buffer = new byte[responseContentLength];
        try {
            socketIn.readFully(buffer);
        } catch (EOFException e) {
            throw new ServletServerException("unexpected EOF reading server response");
        } catch (IOException e) {
            throw new ServletServerException("error reading from server");
        response.setStatus(HttpServletResponse.SC_OK);
        response.setContentType("application/octet-stream");
        response.setContentLength(buffer.length);
        try {
            OutputStream out = response.getOutputStream();
            out.write(buffer);
            out.flush();
        } catch (IOException e) {
            throw new ServletServerException("error writing response");
}I checked also with packets monitoring tool, I couldn't see any http transportation.
Any help will be appreciated.

Dont think RMi is HTTP tunneling through proxy firewall

Hi Guys,
Does anyone know how to monitor if RMI is using the option toHTTP tunnel through a proxy ???
Many of clients sit behind firewalls/proxies that enable HTTP only. I thought RMI would, as a default, use HTTP tunneling POST, RESPONSe methods to get through, but it does not.
Would that case be insted of using Naming.lokup("RMIServer"); that i should use
Registry reg = LocateRegistry.getResgistry(serverAddress, serverPort);
reg.lookup("RMIServer");
Any help would be greatly appreciated.

RMI doesn't have an option like that. Sockets do, and you get it for any socket including RMI by setting socksProxyHost and socksProxyPort.
The RMI HTTP tunnelling thing happens when there is an HTTP server at the server side. which redirects the request to an RMI server via rmi-cgi.cgi or the RMI servlet. It's automatic, as a fallback, and you can enforce its use via a system property which you can find in the Javadoc Guide to Features/Remote Method Invocation/Useful java.rmi system properties.

HTTP tunneling is disabled in weblogic 9.2

I have restarted my weblogic server on last saturday, after that i am getting the following exception continuously.
####<Jun 5, 2010 11:27:44 PM MEST> <Info> <ServletContext-/bea_wls_internal> <aberdeen> <IAEABEADMP> <[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1275773264990> <000000> <HTTPCl
ntLogin: Login rejected with code: 'Failed', reason: java.net.ProtocolException: HTTP tunneling is disabled
at weblogic.rjvm.http.HTTPServerJVMConnection.acceptJVMConnection(HTTPServerJVMConnection.java:88)
at weblogic.rjvm.http.TunnelLoginServlet.service(TunnelLoginServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3244)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2010)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1916)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1366)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
In my weblogic server, i am not changed any configuration file, and i can see the HTTP tunneling flag is false (default value).
Can any one tell why the reason for getting this exception.
Since i have not changed any configiguration file and i am restarting the server every saturday, this is the first time i got this error.
Please help to identify the possible reason for this error.?
Oracle forums suggest that for resolving this just enable the HTTP tunneling flag in weblogic console.

Thanks for you response manish.
Once again i have gone throught the log file. Transactions are rollbacked but the cache is not cleaned. i contacted some of friends who is working in weblogic, even thought they are not able to find the solution.
some guys are saying clean or flush ejb cache is container task. but the container not cleaning the ejb cache.
Please any body give some solution for me it is very ugent.

How to initialize the Http Tunnel Connection

hi all,
I am developing an application in which i have to get the images from the server.At first i have used the Apache Tomcat it was working fine in my localSystem.
when the same application when getting the images from the server it was getting the following exception in the RunTime,Error in HTTP Tunnel initializing
what does it mean,is this a problem in the network.Can anybody give me the way to initialize the Server or the midlet to get the image.
When the same URL in the Browser it was displaying the image.Can anybody please give me the solution in this aspect
thanks in advance
lakshman

hi ,
The above preferences about the network will work fine when you are working with the localhost.When the same application dealing with the network connection like http://mywebsite/.... it was not giving wny response.
I don't know the reason for that, if you know please share with me.but the application will work fine in mobile. I tested that application with the ASP file in my website with the 6630.
if you have any doubts feel free to post here
lakshman

HTTP-Tunneling through Apache Plug-in

Hello,
has anybody experience with HTTP-Tunneling of requests to a WLS
4.5.1SP13 through an Apache-Webserver?
I'm not able to configure the apache plug-in from weblogic to act as a
reverse proxy for requests coming from a
Java Client Application.
Any Hints available?
Remo

"Jong Lee" <[email protected]> wrote in message
news:3a4a9efa$[email protected]..
>
Remo Schnidrig <[email protected]> wrote:
Hello Jong,
HTTP tunneling will append ".tun" to your request.
For apache, you can use "MatchExpression" to proxy the mime type.
i.e: add the following line to your httpd.conf
MatchExpression *.tunThat is functioning. Thank you very much.
Another question:
What about HTTPS-Tunneling through an Apache-Server?
How can I get everything through?
Thank you
Remo
We don't support https from the bridge to the server yet.
JongWhat about using HTTPS-Tunneling between our Java client and the WLS
Stronghold plug-in and HTTP-Tunneling between the plug-in and the WLS?
If this is possible, how do I have to setup the stronghold?
Remo

HTTP Tunneling and Load Balancing with Weblogic Server 6.1

We use T3 for Java client to application server communication (Weblogic Server
6.1) and keep the session open for the life of the client. We many customers
using this with load balancers and all works fine. We have just started to use
BEA's HTTP tunneling and I have a question concerning how this will work with
load balancers. Since the single T3 connection has been replaced with a series
of stateless HTTP connections, does the BEA tunneling code put session information
in the HTTP header? If so, what information does it place in the header. If
it does we should be able to use that to make sure that the load balancer always
sends HTTP requests with that session to the same application server.
Thanks!
Rick

Rick,
You may want to look at the Alteon and F5 configuration we have on edocs.
Take a look at the following URLs for a possible solution
http://edocs.bea.com/wls/docs61/cluster/alteon.html#591902
http://edocs.bea.com/wls/docs61/cluster/bigip.html#591902
Chuck Nelson
DRE
BEA Technical Support

[Fwd: JMS publishing via http-tunneling]

"Jeffrey S. Hair" wrote:
Does anyone know of way to speed up WL JMS publishing via http-tunneling?
We have a server that is publishing messages to JMS rather frequently (1/200 millisecs). We then
have several applications and applets subscribed for this topic. The applications work great and get
all of the messages quite fast (using t3 protocol).
However, the applet, running on the other side of a firewall, and connected to the server over a 28k
modem, receives the updates rather slowly since the messages need tunneled through http. In fact, so
many updates are being published that the applet continually falls behind. If we stopped the updates
or slowed down the updates, the applet would eventually catch up and reflect the latest message.
The sessions in the applet were created using AUTO_ACKNOWLEDGE. I've since changed them to use
CLIENT_ACKNOWLEDGE and allow for 15 seconds of messages to be processed before acknowledging. This
improved the speed but the applet still falls behind to some degree. When the publishing slows down,
the applet now at least catches up.
As a side note, does anyone know of a way to view the contents of the JMS queue?
Thanx,
jsh
Jeffrey S. Hair
Sr. System Architect, FNX Limited[email.eml]

Which web server are you using?
Both iWS6.0 SP2 or iWS Fast-track 4.1 works with iMQ.
But earler versions of iWS6.0 do not and we have no
control of that.

IPlanet & Weblogic HTTP Tunnelling support

My scenerio involves the following:
- 1 java client
- 1 iplanet server forwarding requests to the weblogic server
- 1 weblogic server 6.1 with HTTP tunnelling enabled
When I get the java client to talk to the iPlanet server, the
performance is very poor and exceptions get thrown on the java client
side like so:
<Error> <HTTPClientJVMConnection> < java.net.ProtocolException:
Tunneling result not OK, result: 'DEAD', id: '195'      at
weblogic.rjvm.http.HTTPClientJVMConnection.receiveAndDispatch(HTTPClientJVMConnection.java:406)
     at weblogic.rjvm.http.HTTPClientJVMConnection.execute(HTTPClientJVMConnection.java:296)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)      at
weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120) >
Now, when i change around the client end to talk directly to the
weblogic server, everything works fine, and the tunneling bottleneck
in performance is not even noticible.
So I have come to the conclusion that iPlanet is causing these
problems. I've tried to setup the obj.conf within iPlanet using the
NSAPI-Plugin to forward tunnelling requests, but it seems to make no
difference. Here is a snip of the obj.conf file from iplanet:
<Object name="tunnel" ppath="*/HTTPClnt*">
Service fn=wl_proxy WebLogicHost=192.168.1.4 WebLogicPort=7056
</Object>
Anyone have any experience with this issue?
Thanks,
Travis

Hi,
There is patch for the webserver(Apache Plugin),thats needs to be downloaded from Metalink,dont use the default plugin that comes with the weblogic 10.3 installtion.
Regards,
Dinesh

HTTP tunneling / number of TCP connections

Environment WLS 7.0 Sp2
We are experimenting with http tunneling and we noticed the following behavior,
when performing a lookup to get a handle to a few session beans that our UI is
using, Weblogic opens an additional TCP connection for every lookup however when
using t3 Weblogic opens a single connection for all of them. Our guess is that
Weblogic's T3 is optimized to pipeline and multiplex everything asynchronously
over one TCP connection.
Is there a way to configure Weblogic to use a single TCP connection when tunneling?

I believe it would just be an OS-level limit, on the number of socket handles that can be opened.

For http tunnel

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