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Message:

java - asp maintain session

Posted by Anubhav on April 13, 2001 at 3:40 AM

guys,
this is all i could work out .. but it still returns a new session id from the consecutive calls to other pages from java app.

see if it helps:

import java.net.*;
import java.util.*;
import java.io.*;

public class CookieTest {

Hashtable cookies; // we will store cookies in this hashtable

public CookieTest()
{
cookies = new Hashtable();
}

public static void main( String args[] )
{
if( args.length != 1 )
{
System.out.println( "Usage: java CookieTest url" );
}
else
{
try{
CookieTest ct = new CookieTest( );
URL u = new URL( args[0] );

System.out.println( "Connecting the first time..." );
ct.connectToURL( u );

u=new URL("http://localhost:8100/webidentity/test2.jsp");
//u = new URL( "http://192.168.0.101/pm/old/anutest2.asp");
System.out.println( "Connecting the second time..." );
ct.connectToURL( u );
/*
u = new URL( args[0] );
System.out.println( "Connecting the third time..." );
ct.connectToURL( u );*/

}
catch( MalformedURLException ex )
{
System.out.println( "Malformed url: " + args[0] );
}
}

System.exit(0);
}

public void connectToURL( URL u )
{
try{
// get a URLConnection
URLConnection uconn = u.openConnection();

// set any cookies previously saved in the cookies Hashtable
// uconn.setDoOutput(true);
// uconn.setDoInput(true);
setCookies( uconn );

// make a connection, this will send headers to the server
uconn.connect();

// get cookies and save them in the cookies Hashtable
saveCookies( uconn );

InputStream in=uconn.getInputStream();
BufferedInputStream bufIn = new BufferedInputStream(in);
// strFileInput=new StringBuffer();

// Repeat until end of file
for (;;)
{
int data = bufIn.read();

// Check for EOF
if (data == -1)
break;
else
{
System.out.print ( (char) data);
// strFileInput.append((char) data);
}

}

// uconn.disconnect();
}
catch( IOException ex )
{
System.out.println( "Couldn't connect to " + u.toString() );
}
}

private void setCookies( URLConnection urlconn )
{
String headerfield = "";
String host = "";

// get the host
host = urlconn.getURL().getHost();

// get saved cookies from hashtable
headerfield = (String)cookies.get( host );

// check if there are any saved cookies
if( headerfield != null )
{
System.out.println( "Setting cookies: " + headerfield );

// set cookie string as request property
urlconn.setUseCaches(false);
urlconn.setRequestProperty("Connection","Keep-Alive");
urlconn.setRequestProperty("Host","localhost:8100");
urlconn.setRequestProperty("Accept-Encoding","gzip, deflate");
urlconn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)");
urlconn.setRequestProperty("Accept-Language","en-us");
urlconn.setRequestProperty( "Referer","http://192.168.0.101/pm/old/anutest.asp");
urlconn.setRequestProperty( "Cookie", headerfield );
}
}

private void saveCookies( URLConnection urlconn )
{
int i = 0;
String key = null;
String cookie = null;
String host = null;
String headerfield = null;
StringTokenizer tok = null;

// get the host
host = urlconn.getURL().getHost();

// forward pass any starting null values
while( urlconn.getHeaderFieldKey( i ) == null ) i++;

// check all the headerfields until there are no more
while( urlconn.getHeaderFieldKey( i ) != null )
{
key = urlconn.getHeaderFieldKey( i );

// check if it is a Set-Cookie header
if( key.equalsIgnoreCase( "set-cookie" ) )
{
headerfield = urlconn.getHeaderField( i );
if( headerfield != null ) // can the headerfield be null here ?
{
// parse out only the name=value pair and ignore the rest
tok = new StringTokenizer( headerfield , ";" , false );

// if this is anything but the first cookie add a semicolon and a space
// before we add the next cookie.
cookie = ( cookie != null ? cookie + "; " + tok.nextToken() : tok.nextToken() );
}
}
i++;
}

// save the cookies in our cookie collection with the hostname as key
if( cookie != null )
{
try{

System.out.println( "Saving cookies: " + cookie );
System.in.read();
System.in.read();

cookies.put( host, cookie );
}
catch(Exception ioe){}

}
}
} // end class