I have asp.net webservice package built by previous developer now has stopped working. It still posts the request to remote server but in return it is supposed to send confirmation back to our server which it fails.
I check the script header and it appropriately assigned the ConfigurationManager.AppSettings code block to (ConfirmationEmail) parameter available in app.config file.
But on receiving end we don't see the confirmation email.
Can you help me whats going on here.
On the receiving end, we are not seeing email address that we passed through X-Vendor-Email
Shouldn't the custom header be added to headers instead of part of the content type?
ie.
oWeb.Headers.Add("X-Vendor-Email", ConfigurationManager.AppSettings("ConfirmationEmail"));
So I have a webpage, ("http://data.terapeak.com/verify/") and I don't see any & tags in the URL so I am unaware how to post data to this. I need to do this via HTTPRequest rather than browser control. I am creating a double threaded batch searching program. I have already successfully made this using a single browser control but that wont allow for multi-threading, atleast with my current knowledge due to the fact that even when creating a new frmBrw that already exists it needs for me to set the threat apartment to single. If i set it to single, I am unable to have it send the data the the excel sheet I need both threads to access. I hope this is clear... The basic question is how can I log into this form via HTTP request.
This isn't going to be easy to answer without further details however I suspect you'll need to provide the variables via a HTTP POST request.
Can you successfully login to this page in your browser? If so, run a proxy tool such as fiddler and check the HTTP headers it makes to the server. You should see the form variables being passed over. You then need to mimic this in code.
How to: Send Data Using the WebRequest Class
Hope this gets you started
I'm building an emailshot tracking function in my ASP.NET site which will serve up a linked image when the email is opened, so allowing me to count the email opens.
It's all above-board, opted-in etc, etc, and I've tried two methods:
calling a .aspx page that serves (direct to the Response stream) a Base64-encoded image stored in a database
calling a .ashx HTTP handler that serves an image from a physical folder
Both of these techniques work absolutely fine - the image is served, and I can process the hit in the page code - if I use my POP email or my Gmail accounts.
However, Hotmail blocks them both. It doesn't even give the option of displaying images - there's no trace of the original link if I View Source on the browser email display.
Links to images only seem to display correctly in the Hotmail browser window if I:
Use an actual domain name in the link (rather than an IP address or localhost for testing) AND
Link to physical files (rather than pages that serve them) using <img src="http://domain/imagefilename.ext"/>.
Is there an alternate approach that will at least give the option of viewing the image? I'm not trying to conceal the tracking in any way - there will usually be other linked images in the emails anyway.
Nor does the thing being served have to be an image - is there anything else that can be served (and hence counted) that isn't treated as suspicious by over-zealous mail servers such as Hotmail?
Cheers.
You can add a querystring value at the end of the url. And then configure IIS to handle that extension.
WELL what are you asking is a nightmare for email server.this same technique is used by spammers to get valid emailid out of junk emailids. For now i can assure you tracking opening of email is impossible using any white hat or gray hat techniques on any reputiable servers.
plese see these links for more details:-
http://emailuniverse.com/ezine-tips/?id=502
https://webapps.stackexchange.com/questions/22662/way-to-ensure-that-my-sent-email-was-read
However dont take myword 'impossible' for granted, there are some protected techineques available but i am not sure about it
http://mailchimp.com/
good luck
A browser sends a GET request for a static web page to a server. The server sends back HTTP OK response with the HTML page in the HTTP body. Looking at the Content-Length field or looking for the terminating chunk or some other delimiter for some other encoding the browser can know if it has received the web page and subsequently all its embedded objects (images etc.). Is it correct to say that in this case the browser always knows when a web page has completely loaded and that it will see no further network traffic?
Now if the page is dynamic (lets say facebook or gmail), where you might receive notifications or parts of the page gets updated using AJAX or javascript running in the background, here also the browser should know when the page has loaded. What if the server is pushing some updates to the client. Is it possible in this scenario for the browser to know when it has received the full update?
So, is there any scenario in which a browser doesn't know when it has fully received the data (static or dynamic) it has requested from a web server or push-based updates the server is forwarding to it?
I can only imagine (for the static case) the one scenario when Content-Length is not set. It's not mandatory to send it for the server.
Potentially, of course, in a page containing scripts, one could also have other scenarios where the script loads bits and pieces one by one with delays (including the AJAX scenario you mentioned). This way the browser would not know in advance either. In such a case it would know "for the moment" that the page has loaded completely, but the next action from the script would invalidate that assertion again.
You do not need AJAX to get in a situation where not all elements in the page are loaded even after the page itself has been loaded. A little javascript is all that you need (been a while since I last worked with JS, there might be some syntax errors)
<img id="dyn_image" src="/not_clicked.gif">
<input type="button" onclick="javascrit:document.get("dyn_image").src="/clicked.gif">
There are cases when the server uses some kind of push technology, for example Comets. In this case a request (generally Ajax request) is sent, without receiving any response (obvoiusly no HTTP headers as well), but leaving the TCP connection open. This may take long time, but still may be considered as a sub-case of Ajax calls.
The other case is HTML5's WebSocket technology. In a WebSocket the server side can push data to the client side without explicit request from the client side.
These two can be combined, so the answer to your question is: yes, there can be cases when you cannot predict that the network traffic is over or not. The common (in all cases) is that the client side must leave a channel open to the server.
What does "Pending" mean under the status column in the "Network" tab of Google Chrome Developer window?
This happens when my page script issues a GET request whose response contains content-headers for downloading a CSV file:
Content-type: text/csv;
Content-Disposition: attachment; filename=myfile.csv
This works fine in FF and IE7, downloading a CSV file as expected and opening a file picker to save the file, but Chrome does nothing. I confirmed that the server responds to the request, so it appears that Chrome will not process the response.
Curiously, all works as expected if I type the URL into Chromes address bar and hit <enter>.
FYI: Chrome 10.0.648.204 on Windows XP
In my case, I found that the "pending" status was caused by the AdBlock extension. The image that I couldn't get to load had the word "ad" in the URL, so AdBlock kept it from loading.
Disabling AdBlock fixes this issue.
Renaming the file so that it doesn't contain "ad" in the URL also fixes it, and is obviously a better solution. Unless it's an advertisement, in which case you should leave it like that.
I also get this when using the HTTPS everywhere plugin.
This plugin has a list of sites that also have https instead of http. So I assume before the actual request is made it is already being cancelled somehow.
So for example when I go to http://stackexchange.com, in Developer I first see a request with status (terminated). This request has some headers, but only the GET, User-Agent, and Accept. No response as well.
Then there is request to https://stackexchange.com with full headers etc.
So I assume it is used for requests that aren't sent.
I had some problems with pending request for mp3 files.
I had a list of mp3 files and one player to play them. If I picked a file that had already been downloaded, Chrome would block the request and show "pending request" in the network tab of the developer tools.
All versions of Chrome seem to be affected.
Here is a solution I found:
player[0].setAttribute('src','video.webm?dummy=' + Date.now());
You just add a dummy query string to the end of each url. This forces Chrome to download the file again.
Another example with popcorn player (using jquery) :
url = $(this).find('.url_song').attr('url');
pop = Popcorn.smart( "#player_", url + '?i=' + Date.now());
This works for me. In fact, the resource is not stored in the cache system. This should also work in the same way for .csv files.
I had the same issue on OSX Mavericks, it turned out that Sophos anti-virus was blocking certain requests, once I uninstalled it the issue went away.
If you think that it might be caused by an extension one easy way to try and test this is to open chrome with the '--disable-extensions flag to see if it fixes the problem. If that doesn't fix it consider looking beyond the browser to see if any other application might be causing the problem, specifically security apps which can affect requests.
I had a similar issue with application/json ajax calls. In ff/IE they were fine. In chrome in the Developer Network window Status was always (pending) because a different status code was being returned.
In my case I changed my Json response to send a HttpStatusCode of 200 then Chrome was fine and the Status Text changed to 200 OK.
For example using ASP.NET Web Api
return new HttpResponseMessage(HttpStatusCode.OK ) {
Content = request.Content
};
The Network pending state on time, means your request is in progressing state. As soon as it responds the time will be updated with total elapsed time.
This picture shows the network call is in processing state(Pending)
This picture shows the time taken in processing by network call.
The fix, for me, was to add the following to the top of the php file which was being requested.
header("Cache-Control: no-cache,no-store");
Same problem with Chrome : I had in my html page the following code :
<body>
...
<script src="http://myserver/lib/load.js"></script>
...
</body>
But the load.js was always in status pending when looking in the Network pannel.
I found a workaround using asynchronous load of load.js:
<body>
...
<script>
setTimeout(function(){
var head, script;
head = document.getElementsByTagName("head")[0];
script = document.createElement("script");
script.src = "http://myserver/lib/load.js";
head.appendChild(script);
}, 1);
</script>
...
</body>
Now its working fine.
Encountered a similar issue recently.
My App is in angular 11 and we have a form with some validators which have regex to validate the data. One of data element had a special character which the regex wasn't handling and it made the entire browser hung up. Infact, even though all network calls were successful with 200 Ok, chrome was not showing any response returned by the backend and was also showing the requests in Pending State when infact all network calls are successful, there was no console log errors or anything. Handling the regex fixed the issue.
After i found the issue, i googled more about it. Here is more explanation about it.
https://javascript.info/regexp-catastrophic-backtracking
I came across this issue when I was debugging a local web application. The issue turned out to be AVG Antivirus and Firewall restrictions. I had to allow an exception through the firewall to get rid of the "Pending" status.
In my case, a simple restart to my browser (chrome) and it worked straight away afterwards like magic!
Little bit of context, I happen to refresh my frontend web page and straight away went onto making a changes to my API which led it to restart. During that instance, the frontend was making calls to API which led into "pending" due to that API is reloading. Browser at this point cached that pending state. For me to get out of it is either I set no-cache (which I didn't want to) or simply restart the browser, I chose the restart.
A little background
I encountered such an issue when requesting an url in my Django project. The server is setup using Apache HTTP web server and basic auth for user authentication.
The url I was accessing required no authentication to access i.e. in my Apache config, I had set Require all granted on the url using the LocationMatch directive.
The issue
The url I was trying to access returned 200 status (in the Network tab in Chrome), but the static assets being used for styling of the requested webpage (css, javascript, font files etc.) associated with the request url were not loading and returned pending status.
In the meanwhile, the page loaded partially and still kept on loading. All this was happening in the presence of basic-auth dialog in browser, even though my url was granted all access.
What worked for me
Interestingly, as I entered my credentials and logged in, the requested page loaded all the static assets. This made it very clear to me that the static assets directory might NOT have the necessary access permissions.
Then, I granted the access to the static assets directory by updating my Apache config and then the requested url and the webpage loaded up fine (200 status) without any basic auth dialog OR pending status.
In my case, there's an update for Chrome that makes it won't load before you restart the browser. Cheers
I encountered the same problem when I request certain images from page. I use JavaScript to set the src attribute of an img object and if the network is poor pending will be displayed in the network panel of chrome developer window. I think it's due to the poor network.