Transmitting and Receiving an audio file in a web server

Hello all,
How do I transmit an audio file from a Web Server as requested by a web based thin client (jsp)?
Rgds,
Seetesh

If I were to use the programs : Transmitter and Receiver
Transmitter
http://java.sun.com/products/java-media/jmf/2.1.1/solutions/RTPTransmit.html
Receiver
http://java.sun.com/products/java-media/jmf/2.1.1/solutions/AVReceive.html
Can the same be writen as either a Servlet or JSP so that the same can be executed on a Web Server?
Any workaround on the code to make it run.
Rgds,
Seetesh

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Status:      Connection established, waiting for welcome message...
Response: 230 Login successful.
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Command: PWD
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Error:        File transfer failed
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Command: LIST
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Response: 226 Directory send OK.
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Error:        File transfer failed
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Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
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Command: PASV
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Command: STOR site_global.css
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Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/css/index.css
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Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
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Command: STOR index.css
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Error:        File transfer failed
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Command: TYPE A
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Command: PASV
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Command: USER ftpXXXXXXX
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Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/muse_manifest.xml
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,147,43)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,147,77)
Command: STOR muse_manifest.xml
Response: 150 Ok to send data.
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/muse_manifest.xml
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,152,8)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,152,60)
Command: STOR muse_manifest.xml
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/index.html
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,153,212)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,153,253)
Command: STOR index.html
Response: 150 Ok to send data.
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/sitemap.xml
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,156,194)
Command: STOR sitemap.xml
Response: 150 Ok to send data.
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/css/index.css
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts/css
Response: 550 Failed to change directory.
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Command: MKD css
Response: 257 "/htdocs/indesign/digitalpublishing/twixl/twixlfacts/css" created
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts/css
Response: 250 Directory successfully changed.
Command: PWD
Response: 257 "/htdocs/indesign/digitalpublishing/twixl/twixlfacts/css"
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,158,202)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,158,252)
Command: STOR index.css
Response: 150 Ok to send data.
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/sitemap.xml
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,161,149)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,161,186)
Command: STOR sitemap.xml
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/css/index.css
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts/css
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,163,215)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,164,8)
Command: STOR index.css
Response: 150 Ok to send data.
Error:        Connection timed out
Error:        File transfer failed
Status:      Resolving address of XXXXXXX.netsolhost.com
Status:      Connecting to XXX.XXX.XXX.XXX:21...
Status:      Connection established, waiting for welcome message...
Response: 220 (vsFTPd 2.3.4)
Command: USER ftpXXXXXXX
Response: 331 Please specify the password.
Command: PASS ********
Response: 230 Login successful.
Command: OPTS UTF8 ON
Response: 200 Always in UTF8 mode.
Status:      Connected
Status:      Starting upload of /Users/blackmountainprod01/Documents/Google Drive/eCampus.pro/cours/Twixl Publisher/Twixl Facts!/export/sitemap.xml
Command: CWD /htdocs/indesign/digitalpublishing/twixl/twixlfacts
Response: 250 Directory successfully changed.
Status:      Retrieving directory listing...
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,166,69)
Command: LIST
Response: 150 Here comes the directory listing.
Response: 226 Directory send OK.
Command: TYPE A
Response: 200 Switching to ASCII mode.
Command: PASV
Response: 227 Entering Passive Mode (206,188,192,135,166,96)
Command: STOR sitemap.xml

I want to cache all files in my web server for JRE auto installation

Hi,
I have written an application for my customer. When they access my web server, they will auto-install jre 6.12 and then load my application using jnlp. All that is done, but i want to improve in the following ways:
1. I want to have more quiet installation of java. It should only show progress bar or just run in background. In the jre installation file (cab file), there is a file jinstall-6u12.inf, the last line is "run=%EXTRACT_DIR%\jinstall.exe /installurl=http://localhost/1.6.0_12-b04.xml /installmethod=plugin". What should I add to this line to make the installation more quiet?
2. When my client install jre, i want them to fetch all necessary files from my web server, so when java web site is down, i can still provide files they need to install java. I am aiming jre 6.12 only.
Thank you in advance.
William

Open Macintosh HD > Applications > Utilitiies > AirPort Utility
Click on the Time Capsule icon
In AirPort Utility 6.x.....click Edit to the right of the Time Capsule
In AirPort Utility 5.x.....click Manual Setup
Click the Disks icon/tab at the top of the next window
Click Erase
The "Quick Erase" option will only take a few minutes, but it is not a secure Erase.
The "Zero Out" option will replace everything on the disk with zeros, and will likely take 4-6 hours for the process to complete, depending on the size of the drive.
The erase procedure will only affect the disk. It will not affect any of the network settings, passwords, etc that you have stored on the Time Capsule.

File Based Multithreaded Web Server Question

Hi friends,
I have the code of a simple File Based Multithreaded Web Server. I have been asked to add proper http/1.1 Keep-Alive behavior to it. As far as I understand it means to use the same socket for the request coming from the same client without opening a new socket for every request by it. I am unable to implement it. Any help would be greatly appreciated. The entire code is as below:
package multithreadedwebserver.com;
import java.io.*;
import java.net.*;
import java.util.*;
/** This Class declares the general and HTTP constants
* and defines general static methods:
class Constants {
/** 2XX: generally "OK" */
public static final int HTTP_OK = 200;
public static final int HTTP_CREATED = 201;
public static final int HTTP_ACCEPTED = 202;
public static final int HTTP_NOT_AUTHORITATIVE = 203;
public static final int HTTP_NO_CONTENT = 204;
public static final int HTTP_RESET = 205;
public static final int HTTP_PARTIAL = 206;
/** 3XX: relocation/redirect */
public static final int HTTP_MULT_CHOICE = 300;
public static final int HTTP_MOVED_PERM = 301;
public static final int HTTP_MOVED_TEMP = 302;
public static final int HTTP_SEE_OTHER = 303;
public static final int HTTP_NOT_MODIFIED = 304;
public static final int HTTP_USE_PROXY = 305;
/** 4XX: client error */
public static final int HTTP_BAD_REQUEST = 400;
public static final int HTTP_UNAUTHORIZED = 401;
public static final int HTTP_PAYMENT_REQUIRED = 402;
public static final int HTTP_FORBIDDEN = 403;
public static final int HTTP_NOT_FOUND = 404;
public static final int HTTP_BAD_METHOD = 405;
public static final int HTTP_NOT_ACCEPTABLE = 406;
public static final int HTTP_PROXY_AUTH = 407;
public static final int HTTP_CLIENT_TIMEOUT = 408;
public static final int HTTP_CONFLICT = 409;
public static final int HTTP_GONE = 410;
public static final int HTTP_LENGTH_REQUIRED = 411;
public static final int HTTP_PRECON_FAILED = 412;
public static final int HTTP_ENTITY_TOO_LARGE = 413;
public static final int HTTP_REQ_TOO_LONG = 414;
public static final int HTTP_UNSUPPORTED_TYPE = 415;
/** 5XX: server error */
public static final int HTTP_SERVER_ERROR = 500;
public static final int HTTP_INTERNAL_ERROR = 501;
public static final int HTTP_BAD_GATEWAY = 502;
public static final int HTTP_UNAVAILABLE = 503;
public static final int HTTP_GATEWAY_TIMEOUT = 504;
public static final int HTTP_VERSION = 505;
/* the Web server's virtual root directory */
public static File root;
static PrintStream log = null;
/* Configuration information of the Web server is present
* in this props object
protected static Properties props = new Properties();
/* timeout on client connections */
static int timeout = 0;
/* maximum number of worker threads */
static int workerThreads = 5;
/* General method for printing strings */
static void printString(String s) {
System.out.println(s);
/* print logs to the log file */
static void log(String s) {
synchronized (log) {
log.println(s);
log.flush();
/* print to the log file */
static void printProperties() {
printString("\n");
printString("#####################################################################");
printString("\n");
printString("Web server's virtual root directory= "+root);
printString("Timeout on client connections in milliseconds= "+timeout);
printString("Number of Worker Threads= "+workerThreads);
printString("\n");
printString("#####################################################################");
printString("\n\n");
printString("********************WEBSERVER STARTED SUCCESSFULLY********************\n");
/* load server.properties from java.home */
static void loadServerConfigurationProperties() throws IOException {
File f = new File(System.getProperty("java.home")+"\\lib\\"+"server.properties");
if (f.exists()) {
InputStream is =new BufferedInputStream(new FileInputStream(f));
props.load(is);
is.close();
String r = props.getProperty("root");
if (r != null) {
root = new File(r);
if (!root.exists()) {
throw new Error(root + " Server Root Directory does not exist");
r = props.getProperty("timeout");
if (r != null) {
timeout = Integer.parseInt(r);
r = props.getProperty("workerThreads");
if (r != null) {
workerThreads = Integer.parseInt(r);
r = props.getProperty("log");
if (r != null) {
log = new PrintStream(new BufferedOutputStream(
new FileOutputStream(r)));
/* Assign default values to root, timeout,
* workerThreads and log if the same have
* not been specified in the server.propwerties file
if (root == null) {
root = new File(System.getProperty("user.dir"));
if (timeout <= 1000) {
timeout = 5000;
if (workerThreads > 25) {
printString("\n");
printString("#####################################################################");
printString("\n");
printString("Too many Threads!!!Maximum number of Worker Threads can be 15 only");
printString("\n");
printString("#####################################################################");
workerThreads = 15;
if (log == null) {
log = System.out;
public class WebServer extends Constants {
/* Specifying Default port for listening the requests */
static int port = 8080;
/* The Vector class implements a growable array of objects.
* Like an array, it contains components that can be accessed using an integer index.
* The size of a Vector can grow or shrink as needed to accommodate adding and
* removing items after the Vector has been created.
* The workerThreads are added to the Vector object threads where the worker threads stand idle
* Vector is used since it is synchronized
static Vector threads = new Vector();
public static void main(String[] userSpecifiedPort) throws Exception {
if (userSpecifiedPort.length > 0) {
port = Integer.parseInt(userSpecifiedPort[0]);
loadServerConfigurationProperties();
printProperties();
/* Instantiate ThreadPoool class and call
* the createThreadPool() method on threadPool object
ThreadPool threadPool= new ThreadPool();
threadPool.createThreadPool();
/* This class implements java.lang.Runnable.
* It runs in a worker thread to process the request and serve files to the clients.
class Worker extends WebServer implements Runnable {
static final byte[] EOL = {(byte)'\r', (byte)'\n' };
final static int BUFFER_SIZE = 2048;
/* A byte array buffer to read and write files.
* Memory is allocated to it once in the construtor of the class Worker
* and reused thereafter
byte[] buffer;
/* Socket for the client being handled */
private Socket socket;
Worker() {
buffer = new byte[BUFFER_SIZE];
socket = null;
synchronized void setSocket(Socket socket) {
this.socket = socket;
notify();
public synchronized void run() {
do {
if (socket == null) {
/* Wait */
try {
wait();
} catch (InterruptedException e) {
continue;
try {
handleClientRequest();
} catch (Exception e) {
e.printStackTrace();
socket = null;
Vector pool = WebServer.threads;
synchronized (pool) {
/* When the request is complete add the worker thread back
* into the pool
pool.addElement(this);
}while(true);
void handleClientRequest() throws IOException {
InputStream is = new BufferedInputStream(socket.getInputStream());
PrintStream ps = new PrintStream(socket.getOutputStream());
/* we will only block in read for this many milliseconds
* before we fail with java.io.InterruptedIOException,
* at which point we will abandon the connection.
socket.setSoTimeout(WebServer.timeout);
socket.setTcpNoDelay(true);
/* Refresh the buffer from last time */
for (int i = 0; i < BUFFER_SIZE; i++) {
buffer[i] = 0;
try {
/* We will only support HTTP GET/HEAD */
int readBuffer = 0, r = 0;
boolean endOfLine=false;
while (readBuffer < BUFFER_SIZE) {
r = is.read(buffer, readBuffer, BUFFER_SIZE - readBuffer);
if (r == -1) {
/* EOF */
return;
int i = readBuffer;
readBuffer += r;
for (; i < readBuffer; i++) {
if (buffer[i] == (byte)'\n' || buffer[i] == (byte)'\r') {
/* read one line */
endOfLine=true;
break;
if (endOfLine)
break;
/*Checking for a GET or a HEAD */
boolean doingGet;
/* beginning of file name */
int index;
if (buffer[0] == (byte)'G' &&
buffer[1] == (byte)'E' &&
buffer[2] == (byte)'T' &&
buffer[3] == (byte)' ') {
doingGet = true;
index = 4;
} else if (buffer[0] == (byte)'H' &&
buffer[1] == (byte)'E' &&
buffer[2] == (byte)'A' &&
buffer[3] == (byte)'D' &&
buffer[4] == (byte)' ') {
doingGet = false;
index = 5;
} else {
/* This method is not supported */
ps.print("HTTP/1.0 " + HTTP_BAD_METHOD +
" unsupported method type: ");
ps.write(buffer, 0, 5);
ps.write(EOL);
ps.flush();
socket.close();
return;
int i = 0;
/* find the file name, from:
* GET /ATG/DAS6.3.0/J2EE-AppClients/index.html HTTP/1.0
* extract "/ATG/DAS6.3.0/J2EE-AppClients/index.html "
for (i = index; i < readBuffer; i++) {
if (buffer[i] == (byte)' ') {
break;
String filename = (new String(buffer, 0, index,
i-index)).replace('/', File.separatorChar);
if (filename.startsWith(File.separator)) {
filename = filename.substring(1);
File targ = new File(WebServer.root, filename);
if (targ.isDirectory()) {
File ind = new File(targ, "index.html");
if (ind.exists()) {
targ = ind;
boolean fileFound = printHeaders(targ, ps);
if (doingGet) {
if (fileFound) {
sendResponseFile(targ, ps);
} else {
fileNotFound(targ, ps);
} finally {
// socket.close();
System.out.println("Connection Close nahi kiya");
boolean printHeaders(File targ, PrintStream ps) throws IOException {
boolean ret = false;
int responseStatusCode = 0;
if (!targ.exists()) {
responseStatusCode = HTTP_NOT_FOUND;
ps.print("HTTP/1.0 " + HTTP_NOT_FOUND + " not found");
ps.write(EOL);
ret = false;
} else {
responseStatusCode = HTTP_OK;
ps.print("HTTP/1.0 " + HTTP_OK+" OK");
ps.write(EOL);
ret = true;
log("From " socket.getInetAddress().getHostAddress()": GET " +
targ.getAbsolutePath()+"-->"+responseStatusCode);
ps.print("Server: Simple java");
ps.write(EOL);
ps.print("Date: " + (new Date()));
ps.write(EOL);
if (ret) {
if (!targ.isDirectory()) {
ps.print("Content-length: "+targ.length());
ps.write(EOL);
ps.print("Last Modified: " + (new
Date(targ.lastModified())));
ps.write(EOL);
String name = targ.getName();
int ind = name.lastIndexOf('.');
String ct = null;
if (ind > 0) {
ct = (String) map.get(name.substring(ind));
if (ct == null) {
ct = "unknown/unknown";
ps.print("Content-type: " + ct);
ps.write(EOL);
} else {
ps.print("Content-type: text/html");
ps.write(EOL);
return ret;
void fileNotFound(File targ, PrintStream ps) throws IOException {
ps.write(EOL);
ps.write(EOL);
ps.println("The requested file could not be found.\n");
void sendResponseFile(File targ, PrintStream ps) throws IOException {
InputStream is = null;
ps.write(EOL);
if (targ.isDirectory()) { ;
listDirectory(targ, ps);
return;
} else {
is = new FileInputStream(targ.getAbsolutePath());
try {
int n;
while ((n = is.read(buffer)) > 0) {
ps.write(buffer, 0, n);
} finally {
is.close();
/* mapping file extensions to content-types */
static java.util.Hashtable map = new java.util.Hashtable();
void listDirectory(File dir, PrintStream ps) throws IOException {
ps.println("<TITLE>Multithreaded Webserver</TITLE><P>");
ps.println("<html><body align=center>");
ps.println("<center><h3><font color=#9999CC>Simple File Based MultiThreaded WebServer</font></h3></center>");
ps.println("<table border=1 align=center>");
ps.println("<tr bgcolor=#9999CC><td width=100% height=100% align=center><h3>Directory Listing</h3></td>");
ps.println("<td width=40% height=40% align=center><h3>Type</h3></td>");
String[] list = dir.list();
for (int i = 0; list != null && i < list.length; i++) {
File f = new File(dir, list);
if (f.isDirectory()) {
ps.println("<tr><td>");
ps.println("<font size=\""+"2"+"\"face=\""+"Verdana"+"\"> <A HREF=\""+list[i]+"/\">"+list[i]+"</A></font><a href=\""+list[i]+"/\"></a>\n<BR></td>");
ps.println("<td align=center><a href=\""+list[i]+"/\"><img src=\""+"/images/folder.jpg"+"\"></img></a>");
ps.println("</td");
ps.println("</tr>");
} else {
ps.println("<tr><td>");
ps.println("<font size=\""+"2"+"\" face=\""+"Verdana"+"\"></A> <A HREF=\""+list[i]+"\">"+list[i]+"</A></font><A HREF=\""+list[i]+"\"></A>\n<BR></td>");
ps.println("<td align=center><a href=\""+list[i]+"/\"><img src=\""+"/images/file.gif"+"\"></img></a>");
ps.println("</tr>");
ps.println("</table>");
ps.println("<P><HR><I><font color=blue>"+(new Date())+"</font></I>");
ps.println("<I><font color=blue>Copyright to HCL Technology Ltd</font></I>");
ps.println("<I><font color=blue>Author Vivek Kumar Sinha</font></I>");
ps.println("</body></html>");
The ThreadPool class contains a Vector of WorkerThread objects.
These objects are the individual threads that make up the pool.
The WorkerThread objects will start at the time of their construction.
If there are more HTTP requests than there are WorkerThreads,
the extra requests will backlog until WorkerThreads free up.
class ThreadPool extends WebServer{
void createThreadPool(){
for (int i = 1; i <= workerThreads; ++i) {
Worker w = new Worker();
Thread t=new Thread(w, "Worker Thread No."+i);
t.start();
/* Uncomment to check the number of worker threads running */
// printString("Worker Thread No."+i+" Started");
threads.addElement(w);
try{
ServerSocket serversocket = new ServerSocket(port);
do {
Socket socket = serversocket.accept();
Worker w = null;
synchronized (threads) {
if (threads.isEmpty()) {
/* Do nothing */
} else {
w = (Worker) threads.elementAt(0);
threads.removeElementAt(0);
w.setSocket(socket);
} while (true);
} catch (IOException e) {
e.printStackTrace();

Thank you for Welcoming me!!! I am very new to this forum so din't have this idea.
I am unable to add the keep alive behavior . I don't have problem with any part of the code. The problem is i don't know how to make that enhancement in the existing code.
Regards

Running a batch file on a web server

hi,
i am facing a problem regarding running a batch file(with a java command in that file) on a web server.
i am having a batch file which is running a chatapplication (this file is having a single line -- "java ChatServer 8080")
i want to execute this command ( file ) on my web server
can u help me plz ( i think u can)
thanx 4 reading my problem...
-ashish

thanx 4 replying
but as i am a developer and i am developing the aplication for a client, so should i speak to the client for this or can i do this without interrupting them?
-ashish

Uploading a file to the web server

How can i upload a file to the web server using JSP.

hello sir,
Could U even tell me performance which one is better.
U have mentioned that Multipartrequest is Complex for Beginers,
but as far as performance is concerned which is better.
If Taglib is used is it error Free , as I do not know much abt taglib.
have just read a little abt it , have never created my own Custome Tag.
Could U just Guide me which is the best site where I could get know a little abt Taglib.An easy tutorial where I could read and start working on My application.
I have been given a Deadline. So Please help me man.
If U have the source Code for Uploading of a File Please Cut Paste it.
I have to finish the project on time .
Please
With Regards
Eklavya

Deploying war files on iplanet web server 6.0

Hello All,
I tried to deploy an war file on iplanet web server 6.0 using both command line wdeploy and iplanet webserver browser based admin tool. Both the times it did say successfully deployed. I checked the WEB-INF files and it does contain all class files..But the problem is when I try to post a form to one of the class files the error log says as if it cannot find the class file.(I tried the sample app HelloWorld supplied by vendor)
=========
05/Mar/2002:13:19:14] config (13777): for host xx.xx.xx.xx trying to POST /samples/helloworld/GreeterServlet, handle-processed reports: The request method is not applicable to this requested resource.
=================
any help in this regards is appreciated
Thanks
sudhir

Hello,
I got few steps to deploy the WAR file, if you followed the same steps and got the error then ignore this else try with this steps.
a) Set your environment variable IWS_SERVER_HOME to your server_root directory.
b) Add the server_root/bin/https/httpsadmin/bin directory to your classpath.
c) Configure your virtual server for web applications.
From the Server Manager page, select the VirtualServerClass tab, select a Class, and click the Manage button.
Select a Virtual Server and go to the Java Web Apps Settings page for that virtual server. Make sure that the virtual server has Web Apps State turned On, and web-apps.xml is the name of Web Apps File.
To extract the sample WAR file HelloWorld.war in server_root/plugins/servlets/examples/web-apps/HelloWorld, use the wdeploy command as follows:
wdeploy deploy -u /hello -i server.iplanet.com -v testvs -d
/iws60/https-server.mydomain.com/testvs/web-apps/hello
/iws60/plugins/servlets/examples/web-apps/HelloWorld/HelloWorld.war
The syntax for the command is as follows:
wdeploy deploy -u uri_path -i instance -v vs_id [-d directory] war_file
uri_path Specify the URI prefix (a path to access the web application from the browser).
instance Specify the server instance name. (Note: Do not include "https" in the front.)
vs_id Specify the Virtual Server name as it appears on the Manage Virtual Servers page.
directory Specify a directory to extract WAR files. If this directory doesn't exist already, it will be created for you now.
war_file Specify the name of the WAR file.
If the WAR file is extracted successfully, the message "web application deploy successful" appears at the command line.
For verification, go to the /iws60/https-server.iplanet.com/testvs/web-apps/hello directory. It should have the following contents:
colors
index.jsp
META-INF
WEB-INF/
web.xml
/classes/
HelloWorldServlet.class
HelloWorldServlet.java
SnoopServlet.class
SnoopServlet.java
In the server_instance/config directory, the web-apps.xml file should have the following entry:
<vs>
<web-app uri="/hello"
dir="/iws60/https-server.iplanet.com/testvs/web-apps/hello"/>
</vs>
Restart the server instance from the command line or go to the admin GUI and apply configuration changes to the server instance.
Now when you access the webserver instance in your browser, the Error log of that server instance will record successful initialization of the web application environment(web-apps.xml) for the virtual server(vs name). You can access the web application from a browser as follows:
http://server.Mydomain.com:80/hello/index.jsp
or:
http://server.Mydomain.com/hello/
The syntax is as follows:
http://vs_urlhost[:vs_port]/uri_path/[index_page]
Thanks
Selva

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