XMLHTTP And Cached Page
I have a page requesting content from another via XMLHTTP object. The returned page is returning cached data and I can't get it to stop.
I'm running IIS on a Win2k Server. I've done nothing to setup page caching, etc.
I have a page requesting content from another via XMLHTTP object. The returned page is returning cached data and I can't get it to stop.
I'm running IIS on a Win2k Server. I've done nothing to setup page caching, etc.
This problem is regarding ASP/AJAX. I don't really want to bore you with all the code so i will start off by giving an overview of the problem.
I have an ASP page that places an AJAX request to an ASP page that retrieves a random record from the database, the information returned is then updated into a Div on the original page. The original page has a Refresh link to repeat the procedure and select another random database entry. With me so far?
In firefox this works perfectly, but im having problems in IE. It seems that the ASP page that accesses the database is cached somehow as everytime i use the refresh link it returns the same data. I have used the time() function in the returned data so I can see that it is exactly the same info returned with each refresh.
It seems that the response is being cached and rather than rerunning the script the cache is being returned.
Is there a way to disallow a page from being cached? I'm about to
introduce functionality that will not work properly if the person uses
the 'BACK' button on their browser and would like to ensure that they
cannot. I tried using <% response.expires = -1 %> thinking that it would
work, however it only ensures that another request has to be sent to the
server. Any ideas other than simply giving the user a message NOT to
use the back button?
Here's a link to the functionality. It uses session variables to produce
a dynamic rate quote. (Tip use WDW in the Description/Keyword search).
I want to be able to return to a search results page without having to reload the page after having followed a link from one of the results. Would a search results pages generated by asp be cached, and is it possible to direct the browser to load quickly from the cach rather than slowly from the server.
View Replies View RelatedI have three asp pages. The initial page is login.asp, it goes to page hello.asp. And hello.asp goes to page another.asp. If it goes back from hello.asp to login.asp, then in Internet Explorer, clicking on Back, the cache of the page hello.asp has been removed, which is the effect that I want.
If it goes back from another.asp to login.asp, and then in Internet Explorer, clicking on Back, the page another.asp still remains. Code:
I have three asp pages. The initial page is login.asp, it goes to page hello.asp. And hello.asp goes to page another.asp.
If it goes back from hello.asp to login.asp, then in Internet Explorer, clicking on Back, the cache of the page hello.asp has been removed, which is the effect that I want. If it goes back from another.asp to login.asp, and then in Internet Explorer, clicking on Back, the page another.asp still remains. Code:
How can I use xmlhttp function in ASP page? And, how can I get the xmlhttp parameters using Javascript?
View Replies View RelatedI'm using the MSXML.XMLHTTP object to obtain the results of an ASP page from
an ASP page on the same server. The problem I have is that when the AP
refrenced by the XMLHTTP object is run it does now share the session with
the calling page ? How can I solve this ?
I am building a website to pull data from a remote https site using xmlhttp. The data from the https site is behind a login screen. I can successfully get through the login screen with:
set objXMLHTTP = Server.CreateObject("Msxml2.ServerXMLHTTP")
objXMLHTTP.Open "POST", "https://website.com/validate-login2.asp", false
objXMLHTTP.SetRequestHeader "Content-Type", "application/x-www-form-urlencoded"
objXMLHTTP.Send "Username=uname&password=pwd&company=O"
That works great - but then, when I try to go to the next page (where the data is that I want to pull) - I use the same process and I get kicked back out to the login screen? Could there be some cookies, referer, strings being passed normally that I am not including in my second request - How do i find out for sure?
I have used the software IETrace and it looks like some cookies being passed, but how do I know for sure if (and what exactly) it is using?
I am using ABCPDF4 component(ASP),to add values to an editable pdf, and then redirect user to the pdffile .. but for every user the same values are being shown on pdf .....
View Replies View RelatedWe encountered a very strange problem. We host a web site:
www.[our_site].com and a large number of our users belong to an
organization group with central network control and they can only
access our web site through two headquarter proxy servers: x.x.a.7 and
x.x.b.8, which was set in security dept of the group headquarter. The
web site was working fine till recently when those user accessing via
x.x.a.7 all have problem suddently while those accessing via x.x.b.8
have no problem. The users accessing via x.x.a.7 are directed to wrong
page, very slow response, hang on some page or encounter errors, etc.
If they access the same site via another alias, like
www2.[our_site].com which points to the same web server, they will not
have any problem. They do not have problem to access any other web
sites we tried, including our other web sites hosting in the same site,
even the same server. If the users change their ie setting to use other
public proxy server, they will have no problem to access our site.
Strict security policy are applied to the user site, so we cannot ping,
tracert or do any other network testing from user machine. Since user
has no problem to access any other web site, the headquarter security
department wont handle our case and simply think it is our problem.
I have recently changed web hosts, and am suddenly having the problem that IE is displaying cached ASP pages, i.e. displaying data base query results from the first assembly of the asp page. Surely this contravenes the whole principleof ASP as a dynamically generated page. I didnt get the problem with my previous host.
What am I to do about this? If it is browser dependent, how can I be sure that all users have their browsers set correctly. If it is a host problem, it would be good to have some idea what the problem is before contacting them. Or is there something I can do within my asp page to ensure that the current page is the one displayed by the browser?
I am running an ASP file that returns image buttons back to the client. The download on the client side is slow (about 19 small images on the page). I am running on Windows XP SP1 behind ISA server, and the request is coming from an outside IP.
The same application on an NT 4.0 Server works fine. The download time is maybe 3 seconds, versus about 20 seconds for the same exact images. It is behind the same ISA Server.
I searched the forum and got the following code from someone who posted it in 2002. However I can't seem to get it to work in my asp page. Can someone confirm the syntax for me? I would like to try and put it in an include file rather, but need to get it to work first.
Response.ExpiresAbsolute = #1/1/1980#
Response.AddHeader "cache-control", "no-store, must-revalidate, private"
Response.AddHeader "Pragma", "no-cache"
Response.Buffer = True
Regards
Ronel
Is there an effective way to stop pages from being cached?
I've created several websites that have dynamic content and images that are managed by a client. The images are named according to the "id" generated via an Identity column of their corresponding database record (ex: 1058.jpg). The problem occurs when the client tries to change the image.
The client gets understandly confused because the old image is still displayed, due to the browser caching the image. How can I force the browser to stop caching the page/image?
All of the ASP pages already have the following:
<%Response.Expires = -1%>
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">
Any ideas?
I need to get data from a url (which throws out XML) and then parse it using DOM or XSLT. I know, to get the data, I need to use XMLHTTP.
Can I get a sample code for it?
I have the code below and in a random fashion it is responding extremely
slowly. On in 3-4 times it takes ages to do the job..
It is the line: xml_http.Send("") that gets stuck. I am on IIS 6 on Windows
Server 2003 Web Edition. Code:
One of the limitations of ASP is the lack of a dynamic SSI, in which you can include files using variables. So far I know only of two methods to go around that.to use the File System Object.to use the XMLHTTP Object.Which one of the two is less of a burden for IIS ? Or are there other ways that are much better?
View Replies View RelatedI m getting information with XMLHTTP from 3 sites at the same time. but it is so slow. how can i make it faster. any information or any document about it. anyone who know about it. it is about alsa bandwith. how can i increase xml http performance.
View Replies View RelatedI got a great little example of how to use XMLhttp to query an external web site (I'm wanting to do my own localised search engine by extratcing the content and putting it into an Access DB), but it only appear to extract from the page that you point it to, ie the main default page is extracted when you put in something like www.hp.com.
I want the util to extract content from all of the found pages in the site I suppose like a spider. Has anybody done this or any ideas how you get it to go past more than the initial page?
I need the ASP/xml page to send the Request to the share point portal server (Webdav) using XMLHTTP and i also need to parse the response xml into HTML.If any body knows about.
It might contais mainly three files one is Search page where user can type his requirements , second one contains sending XMLHTTP request to the Share Point Portal server and third one contains the Parse xml response into HTML format.
I use MSXML2.XMLHTTP to receive some HHTP responces from
remote server, unfortunatedly, it uses cookie-based auth.,
so I am unable to pass it, due to inability to store
cookies. How can I retrieve cookies from the headers of
HTTP response, and how can I add them to my request at the
next step?
Why do sites dragged in through XMLHTTP only download half or so of the images associated with the site?
View Replies View RelatedUp to this point, i've been able to extract the search results from a site. Form -> Results chain.
However, on a new project im on, im a little stuck, and not sure if it is at all possible. The next page im trying to get info from there's a chain of 3 pages. so Form -> Middle -> Results.
I've tried inputting my own form data, but i get the page info from the Middle link, and not the Results link. Any ideas how i can go on to the Results link?
At the moment i dont think it's possible, but i haven't been in this game for long.
I'm using XMLHTTP to perform a simple screen scraping job.
When I try to have it "scrape" lines with embeded CSS declarations, it
renders them incorrectly, stripping the leading period. Consequently, my CSS
doesn't work.Here's how I'm calling it, but I don't think my implementation is the
problem.
Dim srvXmlHttp
Set srvXmlHttp = Server.CreateObject("MSXML2.ServerXMLHTTP")
srvXmlHttp.open "GET", TearURL, false
srvXmlHttp.send()
If srvXmlHttp.status <> 200 Then
Response.Write "No Server Response"
Response.End
End If
Dim strRetval5
strRetval5 = srvXmlHttp.responseText
I have a peculiar problem using the method
Server.CreateObject("MSXML2.ServerXMLHTTP") in order to get a connection
from one server to another.
On my personal host (IIS) the above method works perfect, and I can 'include' an HTTP stream from a remote URL into my own page. However, the method doesn't work on another webserver (IIS, too) although the MSXML2.ServerXMLHTPP method is installed (I checked it).
The error message I get there is:
msxml3.dll error '80072ee2' The operation timed out
This error does only appear if I try to get data from a remote URL, if I try to get data from http://localhost/foo, the method works - I believe the webserver is behind a proxy. Would this cause any problems? And if so, how can it be solved?
- Do you guys know of any other solution how to 'emulate' the php
include command in ASP without using the MSXML2.ServerXMLHTTP method?
Shown below is ASP Code sample that tries to access a method,CreateUser in the server called, "http://smallbutsmart.basis.com.au" using the protocol,XMLHTTP. Can you explain to me why this Code does not work and showing the correct Code Sample?
<%
dim objXMLHTTP
set objXMLHTTP = Server.CreateObject("Microsoft.XMLHTTP")
objXMLHTTP.Open "Post", "http://smallbutsmart.basis.com.au", false
'objXMLHTTP.SetRequestHeader "Content-type", "text/html"
'objXMLHTTP.CreateUser "abc","123","Scriven","1","001","qms"
objXMLHTTP.Send
%>
I've been searching everywhere online to find an alternative method besides
using Microsoft.XMLHTTP (as it freezes the server up alot!!) but with no luck
at all.
I am using server side ASP, and some said to use Microsoft.ServerXMLHTTP
instead. However I have tried that as well and it still freezes up the whole
thing (i.e. the site just keeps loading forever).
I tried to do a "on error resume next" clause to catch the error but still
doesn't stop the page being freezing up.. :(
I saw someone here said don't use XMLHTTP in ASP as it is not thread safe
(is that why it is freezing up??), and suggest to use
MSXML2.ServerXMLHTTP.3.0.
so do anyone know if MSXML2.ServerXMLHTTP.3.0 will help? i.e. not freezing
up the page?
when we get info from an url with xmlhtttp or xml server http how it
behaves. how bandwith it uses or how it adjust the bandwith which it use...
how can it use all the bandwith.. any promramme or any windows adjusment
...are there possible solutions.. for example how the flash get use all the
bandwith when we separate from the whole part a file to lots of part
Is this the correct newsgroup for this posting?
I have a problem when using these lines of code:
Dim xmlhttp as Object
set xmlhttp = CreateObject("Microsoft.XMLHTTP")
Call xmlhttp.Open("GET", Application.Profiles.ActiveProfile.Server &
"/Test.abc", False):
Call xmlhttp.send("");
when the last line of code is executed, i get the following error message:
"The download of the specified resource has failed. -2146697208"
Application.Profiles.ActiveProfile.Server = http://x.x.x.x/virtualdirectory
I have a question regarding async mode for calling Microsoft.XMLHTTP object.
Microsoft.XMLHTTP hangs the IE once in a while suddenly, but it will work
again after half an hour or so without doing anything. I have searched
through the Internet and seems like the reason it hangs the browser it's
because XMLHTTP limits you to two concurrent HTTP connections to each remote
host; so if more than 2 concurrent connections strike the script which is
calling XMLHTTP, it will hang. Is that true?
If that the case, can I change async mode to true (async=true) so that it
will only take one connection at a time, meanwhile other concurrent
connections will loop and wait till XMLHTTP is ready to process data again.
Will that work?
My XMLHTTP request code ran fine then all the sudden I get:
An exception occurred: 'xml.Send'
When i reset IIS it works fine again (for awhile)....
Does anybody know what is causing this problem and how to stop/fix it???
I have a machine running W2K Server with the .NET Framework 1.1.
Yesterday, I was able to browse through my .NET web pages OK.
Then, I installed Visual Studio 6.0 and Visual Studio .NET 2003.
Now, when my .NET web pages attempt to perform an XMLHTTP.Send(), I get a status of 500 (i.e. "Server Error). Calling the XMLHTTP.statusText(), I get a response string of "Server Error".
I have checked my IE settings and they have not been changed.
Does anyone have a clue as to why XMLHTTP quit working after I did the installs yesterday