Cookie: why i can't use cookie?

Question

should be "c" instead of "s":response.write c & "=" & request.cookies(s)
===>
response.write c & "=" & request.cookies(c)you should use
Option Explicit
in your asp page to catch this kind of errors

Answer 1

this is a mistake of typing, but not my problem. i even can't get c when response.write c.

Answer 2

1.asp:
<%
for each c in request.cookies
  response.write c & "=" & request.cookies(c)
next
%>2.
testcookie.cs:using System;
using System.Net;
using System.Text;
using System.IO;class TestCookie
{
  public static void Main()
  {
String strURL = "http://localhost/csdn/1.asp";
HttpWebRequest webreq = (HttpWebRequest) WebRequest.Create(strURL);
webreq.CookieContainer = new CookieContainer();
webreq.CookieContainer.Add( new Cookie("name", "value", "/", "localhost"));
HttpWebResponse webres = (HttpWebResponse)webreq.GetResponse();
Stream respstream = webres.GetResponseStream();
StreamReader reader = new StreamReader(respstream,Encoding.GetEncoding("iso-8859-1"));
String strHTML = reader.ReadToEnd();
respstream.Close(); Console.Write(strHTML);
  }
}

Answer 3

thanks to saucer.
i have solved the problem. it's like that. i used post method. and set content length before setting cookies. so cookies are not transferred to server at all.
that's the real problem.
now, i got a new problem. i accessed a website with program with .net , program with mfc(wininet) and internet explorer. with the later two, i got no problem. but with .net, i cannot get the result page. why? is there any differences between them? maybe the site can identify different browser?
do you have any experience on that?
thank you.

Answer 4

no difference, seeRetrieving HTTP content in .NET
http://www.west-wind.com/presentations/dotnetWebRequest/dotnetWebRequest.htm

Answer 5

i studied my problem more, things are like that:
first, i send a request (post) to server, server(Apache) return a cookie(jspidxxxxx=xxxxxxxxxxx) to me, and leaded the program to antoher page(get). so i followed it with cookie set. then something was wrong with this page. the page should display something. but it didn't. it leaded me to an error page(no error information).do you have experience about set-cookie2. or how apache manage session?

Answer 6

on the client side, you should not use "set-cookie", use "cookie" header insteadshow your page code to see what is wrong

Answer 7

here is my code, i used it ok with asp server, but not ok with apcahe server.
public  void getPage(String url, String postData) 
{
//request 1
HttpWebRequest req;
HttpWebResponse resp; string theUrl = url;
string thePostData = postData;
CookieCollection cookies = null; while(theUrl!="")
{
req = (HttpWebRequest)WebRequest.Create(theUrl);
req.CookieContainer = new CookieContainer(); if(cookies!=null)
req.CookieContainer.Add(cookies);
//req.CookieContainer.Add( new Cookie("myname","kevin","/","localhost") ); req.UserAgent = "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; .NET CLR 1.0.2914)";
req.AllowAutoRedirect = false;
req.Timeout = 300000;
req.KeepAlive = true; if(thePostData!="")
{
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
byte[] PostData = System.Text.Encoding.ASCII.GetBytes(thePostData);
req.ContentLength = PostData.Length;
Stream tempStream = req.GetRequestStream();
tempStream.Write(PostData,0,PostData.Length);
tempStream.Close();
}
else
req.Method = "GET";
//get response
resp = (HttpWebResponse)req.GetResponse();
//get headers
foreach(string ss in resp.Headers)
{
string m = resp.Headers[ss];
m += "";
} //transfer to
theUrl = resp.Headers["Location"] + ""; thePostData = "";
//cookies
if(resp.Cookies.Count!=0) 
cookies = resp.Cookies;
else
cookies = null; //write page content
Stream ReceiveStream = resp.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader sr = new StreamReader( ReceiveStream, encode );
string s = sr.ReadToEnd();
StreamWriter writer = File.CreateText(@"2.htm");
writer.WriteLine (s);
writer.Close();
resp.Close();
}
    }

Answer 8

hi, you got anything?

Answer 9

actually, I do not even know what your problem is, here is what I did with a console program:1. redirect.jsp:
<%
Cookie cookie = new Cookie("abc","123");;
response.addCookie(cookie);        String redirectURL = "testplus.jsp";
        response.sendRedirect(redirectURL);
%>
2. testplus.jsp:
<%@ page errorPage="errorpage.jsp" %>
<%=request.getParameter("plus")%><BR>
JSPID:<%=session.getId()%><BR>
Cookies:<BR>
<%
Cookie cookies[] = request.getCookies();
for (int i=0; i < cookies.length; i++)
{
%>
<%=cookies[i].getName()%>=<%=cookies[i].getValue()%>
<BR>
<%
}%>
<form method="post">
<input type="text" name="plus" value="+">
<input type="submit" onclick="this.form.plus.value = encodeURIComponent(this.form.plus.value); alert(this.form.plus.value)">
</form>
<%
int i=1/0;
%>3. errorpage.jsp:
<%@ page isErrorPage="true" %>
<html>
<body bgcolor="red">
<h1> The exception <%= exception.getMessage() %> tells me you
     made a wrong choice. 
</body>
</html>

Answer 10

using System;
using System.Net;
using System.IO;
using System.Text;class GetPage
{
public static void getPage(String url, String postData) 
{
//request 1
HttpWebRequest req;
HttpWebResponse resp; string theUrl = url;
string thePostData = postData;
CookieCollection cookies = null; while(theUrl!="")
{
req = (HttpWebRequest)WebRequest.Create(theUrl);
req.CookieContainer = new CookieContainer(); if(cookies!=null)
req.CookieContainer.Add(cookies);
//req.CookieContainer.Add( new Cookie("myname","kevin","/","localhost") ); req.UserAgent = "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; .NET CLR 1.0.2914)";
req.AllowAutoRedirect = false;
req.Timeout = 300000;
req.KeepAlive = true; if(thePostData!="")
{
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
byte[] PostData = System.Text.Encoding.ASCII.GetBytes(thePostData);
req.ContentLength = PostData.Length;
Stream tempStream = req.GetRequestStream();
tempStream.Write(PostData,0,PostData.Length);
tempStream.Close();
}
else
req.Method = "GET";
//get response
resp = (HttpWebResponse)req.GetResponse(); Console.WriteLine("current url:" + theUrl); //get headers
Console.WriteLine("headers:");
StringBuilder m = new StringBuilder();;
foreach(string ss in resp.Headers)
{
m.Append(ss+"="+resp.Headers[ss]);
m.Append("\n");
}
Console.WriteLine(m.ToString()); //transfer to
theUrl = resp.Headers["Location"] + "";
Console.WriteLine("redirection url:" + theUrl);

thePostData = "";
//cookies
Console.WriteLine("cookies:" + resp.Headers["Set-Cookie"]); if(resp.Cookies.Count!=0) 
cookies = resp.Cookies;
else
cookies = null; //write page content
Stream ReceiveStream = resp.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader sr = new StreamReader( ReceiveStream, encode );
string s = sr.ReadToEnd();
//StreamWriter writer = File.CreateText(@"2.htm");
//writer.WriteLine (s);
//writer.Close(); Console.WriteLine("page content:");
Console.WriteLine(s);
Console.WriteLine("\n");
resp.Close();

}
    }
    public static void Main()
    { getPage("http://localhost:8080/examples/jsp/redirect.jsp","");
    }
}

Answer 11

the output is like this:E:\>GetPage
current url:http://localhost:8080/examples/jsp/redirect.jsp
headers:
Content-Type=text/html;charset=ISO-8859-1
Date=Mon, 16 Sep 2002 20:20:35 GMT
Transfer-Encoding=chunked
Location=http://localhost:8080/examples/jsp/testplus.jsp
Server=Apache Tomcat/4.0-rc1 (HTTP/1.1 Connector)
Set-Cookie=abc=123,JSESSIONID=F215261203D391932685B3218534A726;Path=/examplesredirection url:http://localhost:8080/examples/jsp/testplus.jsp
cookies:abc=123,JSESSIONID=F215261203D391932685B3218534A726;Path=/examples
page content:
current url:http://localhost:8080/examples/jsp/testplus.jsp
headers:
Content-Type=text/html;charset=ISO-8859-1
Date=Mon, 16 Sep 2002 20:20:35 GMT
Transfer-Encoding=chunked
Server=Apache Tomcat/4.0-rc1 (HTTP/1.1 Connector)redirection url:
cookies:
page content:<html>
<body bgcolor="red">
        <h1> The exception / by zero tells me you
             made a wrong choice.
</body>
</html>

Answer 12

try access;
http://mysask.sympatico.ca/portal/generic_process.jsp?beanID=734&viewID=process_yellow_pageswith postdataMEM=800&FUNC=FORMATSEARCH&L=&C=toys&DIR=&AT=SKyou can find the result page by using ie in www.mysask.ca. fill in the form and submit it.

Answer 13

I sent the postdata to that url, I got back a page similar to www.mysask.ca, what am I supposed to see?

Answer 14

you should get a list of company names, addresses, tels, etc. but i suppose you only see a index page.

Answer 15

if you fill in the form on the left side of the www.mysask.ca. it is about seach by name or by category, input "toys" in category and leave others in default. you will get the page that you suppoesed to have.

Answer 16

that's my problem. i should have get a result page. and my code works fine in other site. including your localhost, my localhost, but it works bad in mysask.com.
why?

Answer 17

truly weird, try to get a HTTP monitor to view the request HTTP header from the browser

Answer 18

what's a http monitor? how to get it?

Answer 19

thank you for today, saucer. i got to go. i have class in university this evening. hope to meet you tommorrow.
thanks again.
kevin

Answer 20

by the way, i got result like this. first, access index.jsp to get a cookie. then call getPage again with the cookie. i got the result.
it's like this: private static CookieCollection cs = null;
    public static void Main()
    {
cs = getPage("http://mysask.sympatico.ca/portal/index.jsp","");
//getPage("http://mysask.sympatico.ca/portal/generic_process.jsp?beanID=734&viewID=process_yellow_pages", "MEM=800&FUNC=FORMATSEARCH&L=&C=toys&DIR=&AT=SK");
getPage("http://mysask.sympatico.ca/portal/generic.jsp?beanID=734&viewID=result_yellow_pages&jsessionid=3322971032209581285", "");
    }

Answer 21

try
http://www.naviscope.com/
which monitors all http requests

Answer 22

ic, they must check you have a jsessionid firsthere is the Header the browser sent to the server:
POST http://mysask.sympatico.ca/portal/generic_process.jsp?beanID=734&viewID=process_yellow_pages HTTP/1.0
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*
Referer: http://mysask.sympatico.ca/portal/index.jsp
Accept-Language: en-us
Content-Type: application/x-www-form-urlencoded
Proxy-Connection: Keep-Alive
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; .NET CLR 1.0.3705)
Host: mysask.sympatico.ca
Content-Length: 149
Pragma: no-cache
Cookie: jsessionid=2445841032211906064MEM=800&FUNC=FORMATSEARCH&action2=homeSearch&business=&city=&provinceId=&categorySym=&searchType=yellow_pages&L=&C=toys&DIR=&AT=SK&FIND.x=8&FIND.y=12

Answer 23

i know what you mean: there is an important session operation in index.jsp. i have to access it, get cookie from it before folliwng operation.let me try it.

Answer 24

what I meant is, in their generic_process.jsp, they check if the session is new, if true, they redirect the page back to the index.jsp, for exampleif (session.isNew())
{
  response.sendRedirect("/portal/index.jsp");
}basically, they want you to go to this index.jsp first

Answer 25

yes, you are exactly right as always. i firstly accessed index.jsp. get a cookie for it, and use it to access generic_process.jsp. and gto the page i need.woooo!!!thank u, saucer. you did greatly helped me in recent days. i owe you a dinner. if you come to Montreal, don't forget give me an email. i will be host. let me finish my work before finish this discussion.