Hi, Nigel!

Thank you for the positive feedback.

The issue you have described does not sound familiar, so let us try to troubleshoot this issue with your help.

Could you please start with enabling trace into on your ASP.NET page by doing the <@Page Trace="true" ...>. It should tell you what cookies you get, and therefore will help us to understand if something happens with the cookie carrying session ID.

Best regards,
UltiDev Team.

Nigel,

Let's make sure that IE sends the session cookie back to the server. If not, then it's no wonder new session gets created. Since you are not working with a page, but rather with a handler, we suggest you install Fiddler - a very simple to use HTTP tracer that will intercept the traffic between the client and server, and you'll see whether your app gets the session cookie back from the client. When using fiddler, please be sure to run it on the same PC where your browser is, and use non-localhost-based URL: please use http://machinename:port/ instead of http://localhost:port/.

Another possibility to consider is this. There is a difference between default configuration of IIS and UltiDev Cassini. In IIS all requests for non-ASP files, like images, CSS and scripts are not routed through ASP.NET, and instead served by IIS straight up. In Cassini all requests are routed through ASP.NET, meaning that your handler gets a shot at requests for CSS, GIF, etc. If for any reason logic in the handler terminates the session when it's working with unexpected requests, then you could observe the behavior you described.

Please let us know what you found out.

Best regards,
UltiDev Team.

Nigel, could you please confirm that you don't have this issue IIS? The reason we ask is because there was a bug (at least as of 2004) with IE modal dialog breaking the session: http://www.velocityrevie...es-loss-of-session.html

Best regards,
UltiDev Team.

Thank you, Nigel.

It's an interesting info. Still you probably want to give Fiddler a shot. Since cookie could be eliminated by either sides of the connection, we need do see who ends up not sending the cookie: Cassini or IE; and how session cookie looks like on its final trip from the server to the client.

Best regards,
UltiDev Cassini.

Hi, Nigel.

It's something. We established that client does not send in the session ID, but now we need to know whether the application makes it do it, or some kind of a bug in IE. For that we need to see the headers of the response returned by the application when a page for the new window (GET /AlertAck.axw?alertId=48475) was requested. If there is a Set-cookie response header for the session ID, we would like to see how it looks like. If there is no such header, we would like to ask you to look at responses for prior requests and find the last request with Set-cookie header for the session ID. We want to make sure it's good.

All the best.
UltiDev Team.

Further to my last post, I have run the app under IIS/5 on my local server to get a fiddler trace, which is appended. This too only sends the set-cookie once, but in this case it is in response to a successful user logon POST. With Cassini the session seems to be established by the very first GET (GoToApplication.aspx) and remains unchanged until it gets lost?

Appreciate any help you can give with this.

Fiddler headers from IIS/5
__________________________________________________________
GET /kiwi/ HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Host: oyster
Proxy-Connection: Keep-Alive
If-Modified-Since: Mon, 12 Nov 2007 12:32:45 GMT
If-None-Match: "f2c3d0202825c81:1e95"


HTTP/1.1 304 Not Modified
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:50 GMT
X-Powered-By: ASP.NET
Content-Location: http://oyster/kiwi/Default.htm
ETag: "f2c3d0202825c81:1e96"
Content-Length: 0

---

GET /kiwi/home.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Host: oyster
Proxy-Connection: Keep-Alive


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:52 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 150

---

GET /kiwi/UserLogon.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Host: oyster
Proxy-Connection: Keep-Alive


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:52 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 4298

---

POST /kiwi/UserLogon.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/UserLogon.axw
Accept-Language: en-gb
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Content-Length: 61
Host: oyster
Pragma: no-cache


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:58 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Set-Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm; path=/; HttpOnly
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 52

---

GET /kiwi/home.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Host: oyster
Proxy-Connection: Keep-Alive
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:58 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 17674

---

GET /kiwi/FrameLeft.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/home.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:58 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 14747

---

GET /kiwi/FrameTop.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/home.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:58 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 8397

---

GET /kiwi/FrameMain.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/home.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:58 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 1228

---

GET /kiwi/alertCheck.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/FrameTop.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:39:59 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 225

---

GET /kiwi/AlertListPage.axw HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/FrameMain.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:40:01 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 10564

---

GET /kiwi/AlertAck.axw?alertId=34162 HTTP/1.1
Accept: */*
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Host: oyster
Proxy-Connection: Keep-Alive
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:40:05 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 2868

---

GET /kiwi/ClientListPage.axw?findChr=0&findStr= HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-silverlight, */*
Referer: http://oyster/kiwi/FrameMain.axw
Accept-Language: en-gb
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)
Proxy-Connection: Keep-Alive
Host: oyster
Cookie: ASP.NET_SessionId=ywckki553wzrpii1vvrfp2nm


HTTP/1.1 200 OK
Server: Microsoft-IIS/5.0
Date: Mon, 14 Apr 2008 08:40:08 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 8272

---

Hi, thanks again for the continued response.

Looking at the traces, I figured the main issue was that an asp.net session was started prior to starting into my app.

I have retried my app using the local port directly (e.g. http://shark:2975/ ) rather than going via your GoToApplication.aspx. The problem does not arise and this works from both my local pc and via other pcs on my network.

This leaves the problem of ascertaining which port the service is running from, so I wonder if it is possible / desireable to make GoToApplication.aspx run without any session state? I sense this would clear the whole issue if it were possible.

best regards

Many thanks for this ...

I updated my web.config as you suggested (see below), and can see (via fiddler) the newly named cookies being sent and returned alongside that of Cassini.

<sessionState
mode="InProc"
timeout="30"
cookieName="Kiwi.SessionId"
cookieless="false"
/>

It is very odd, but this appeared to work just once ... thereafter it reverted to the same problem. I have rebooted, restarted cassini, rebuilt the app, cleared out IE cookies, changed the web.config a few times (e.g. cookieless="useCookies") ... and still it fails. I sense there is still an underlying issue with IE, since the problem does not occur if there are two IE windows/tabs open.

Is there a way of determining / setting a predefined port for the application so that I can avoid using GoToApplication.aspx?

Hi

The problem is solid on two other PCs also ... I'm putting it down to bizarre IE, but a later release without a GetApplication session would be good. I can see that I can specify a port on the install, so will aim to use that for now.

Many thanks for all your help with this - it's a great way to deliver small office systems. Hope to go live on my app with this over the next month, very pleased ... thought I'd have to fight Cassini to do this!

best regards
Nigel

Hi

I modified your web.config as suggested, and can see from fiddler that there is no session or cookie from GoToApplication. The problem still occurs in exactly the same way - whether from my PC (running Cassini) or from another on the LAN.

I then wondered if it was anything to do with the redirection itself, so tried to emulate this with IIS using a simple asp page on my IIS server redirecting to the service running under IIS. That works fine. So, really drawing a blank on this.

NOT a stopper though!

best regards
Nigel