StreamReader ReadToEnd() After HttpWebRequest EndGetResponse ()
Jan 18, 2010
I am calling a RESTful web service in the back-end of some ASP.NET pages.
I am using ASP.NET asynchronous pages, so under the hood I am using the methods:
HttpWebRequest BeginGetResponse() and
HttpWebRequest EndGetResponse()
The response string in my case is always a JSON string. I use the following code to read the entire string:
using (StreamReader sr = new StreamReader(myHttpWebResponse.GetResponseStream()))
{
myObject.JSONData = sr.ReadToEnd();
}
Is this method OK in terms of scalability? I have seen other code samples that instead retrieve the response data in blocks using Read(). My primary goal is scalability, so this back-end call can be made across many concurrent page hits.
I'm scraping a page from a remote site. I have the correct HTML and it is below. However, I need to display only the top 3 new stories. Using C# how can I loop through the HMTL on the page to do this? Here is the HTML that I have scraped from the screen and am currently display on the page:
I'm trying to read an html but it's only reading the first 1169 characters? And when I open the source code it's huge! here is the html I'm trying to read http://mesowest.utah.edu/cgi-bin/dro...graph=0&past=0. If i enter in another website it reads 23,000 characters.
Code: Protected Sub Button82_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button82.Click
Dim request As System.Net.HttpWebRequest = System.Net.HttpWebRequest.Create("http://mesowest.utah.edu/cgi-bin/droman/meso_base.cgi?stn=DPG01&unit=1&time=LOCAL&product=&year1=&month1=&day1=00&hour1=00&hours=&graph=0&past=0") [code]....
I am trying to create a small app that will stream read a remote web page (specified by user input)find all images within the page (using regular expressions)stream read these imagesadd them as LinkedResource 's to a HTML emailI have got it working fine when the images and defined using absolute urls but not when they are relative - How can I can webRequest / streamReader to behave like a web browser does and locate the images based on their relative location.I have thought about manipulating the main web url and prefixing it to the source of the image, but I am not sure how I would deal with am image source such as
I have a page with is basically a few Gridviews that I want to email to some users. The Gridviews are connected to sqldatacontrols. I create the select statements in the code behind. This all works fine.
To email the page I read the page into a streamreader and then creates an email and sends it. So when I get the email the Gridviews show no data.
I stepped through my code and found that the issue is with a variable. The Select statement has a few parameters one of which comes from a profile variable. When the page is read the profile variable is empty. I tried it as a session variable and that fails as well so my question is if I cannot use profile variables or session variables what other way is there to save this data?
In VB I can place module level variables so that say when a form loaded and I wanted to save a variable I would load the module variable which made it available to any form in the project but I assume that I cannot do the same in VB.net asp.Net? On the first page load the variable is available I just have to figure out a way to save it to pull out again when the page posts back.
I need to read a file on a server into a textbox. I did a test on my local PC, to make sure it works the same in a web app as it does on a desktop app.
The data appears to read just fine, but it doesn't display properly. The test file in the screenshot below, shows how the data should be displayed. When using a desktop app, the data displays just like this.
But on the web app, I get this:
Although the TextBox appears to be MultiLine, it only displays the data in the middle of the box and as one line. Am I missing something?
I'm trying to do some simple stuff, I've already looked at the examples through the web and I'm not sure of what I'm doing wrong It's a unit test that i'm doing to test some functionality that later will be performed by some different devices Basically I'm creating a webrequest to my site, which returns a set of cookies, which we later on need. Then I want to create a new webrequest, using the returned cookies from the first response, but when i'm reading that info, the cookies are empty
var request = (HttpWebRequest)WebRequest.Create("http://localhost/bla"); request.ContentType = "application/x-www-form-urlencoded"; request.Method = "GET"; request.CookieContainer = new CookieContainer(); request.CookieContainer.Add(originalResponse.Cookies); // originalResponse.Cookies has several cookies needed by "bla" var response = request.GetResponse(); In another place... (inside "bla") HttpContext.Current.Request.Cookies // this is empty
I am attempting to create a single sign on experience between an asp.net site and a wordpress site using a simple form POST method. I have built a simple php page that uses the native wordpress functions wp_insert_user and wp_signon to create user account in the mysql db and sign them in. In my asp.net 'create new user' page code behind, I'm using the post method of an HttpWebRequest to send the required information to the php page.
It almost works! The new wordpress user is created in the mysql database, but they are not logged in. How can I get wordpress to log them in?Here is my HttpWebRequest
'get the values Dim fn As String = TxtFirstName.Text Dim ln As String = TxtLastName.Text[code].....
I'm implementing PayPal PDT (Payment Data Transfer) for payment confirmations in ASP.NET.'m going to receive a url post from PayPal with query string parameters. Then I need to send back the form at the bottom of the page.I'd like to implement the form at the bottom as a non-visual HttpWebRequest.
I'm developing a website that will connect to a credit card processing gateway webservice. For security purposes this webservice accepts requests only from IP addresses that were previously informed to them.
Since I'm developing locally, my IP changes almost every day. Is there a way for me to change the IP address of a HttpWebRequest so that I can test the Webservice calls locally?
This webservice is accessed through a https address and the methods must be sent via POST.
I am trying to connect to a web service that uses Kerberos Authentication to authorize the user, but all I get is a 401 unauthorized everytime I try to make the request. Below is the code that I am using.
EDIT: I feel I should explain a bit more what I am attempting to do. I have been tasked with providing a new interface for my company's Google Search Appliance. I am using an ASP.NET page, which does some things like choose a Collection depending on where a user is located, etc. and then sends the appropriate search string the the GSA. This was all working well until they decided to turn authentication on, and now I can't get any results (I either get a 401 unauthorized, or a message stating that 'Data at the root level is invalid'). If I take the search string and provide it directly to the GSA, it authenticates fine, and displays the results, I just can't seem to get it through the HttpWebRequest.
EDIT 2: I did a little more looking (ran the request through Fiddler) and it looks like the request is only attempting Negotiate and not Kerberos. I set the credentials to use Kerberos explicitly as below, but it didn't help...
I wrote following code to update data to website. Code run; but I am not able to see my data if uploaded. Here we have facility to see what data is getting uploaded but I am not able to see my data.
// Above URL is not real as I do not want to disclose real URL as of Now Uri targetUrl = new Uri("http://www.x86map.com/post-embed/ewspost"); HttpWebRequest request = null; StringBuilder sb = new StringBuilder();
I am trying to automate a few things in wordpress blog, using HttpWebrequest.i have tried to get the login page "http://mywebsite.net/wp-admin"and then try to post with login data on page "http://www.mywebsite.net/wp-login.php"data = "log=admin&pwd=mypassword&wp-submit=Log+In&redirect_to=http%3A%2F%2Fmywebsite.net%2Fwp-admin%2F&testcookie=1"i am not able to login, wat i have discovered is that when using browser the cookies are sent to the server, but using HttpWebrequest the cookies are not sent on post, i am configured a cookiecontainer for the httpwebrequest and works fine other wise,.. and also on "post" the request host also changes to "www.mywebsite.net" and on "get" request it is "mywebsite.net"
I am trying to login to the website below using HttpWebRequest. I am passing in the username and password using the Credentials property but keep getting back the Login page of the website. Can anyone explain what I am doing wrong.
I have a problem posting xml Data using HttpWebRequest..
The server returns Internal error..
I want to simulate a simple Form with Method=Post. The form have three fields. Two for credentials and the third one for Posting XML. Here is the sample HTML which i want to simulate using HttpWebRequest..
My Silverlight4 app is hosted in ASP.NET MVC 2 web application. I do web request through HttpWebRequest class but it gives back a result previously cached. How to disable this caching behavior? There are some links which talks about HttpWebRequest in .NET but Silverlight HttpWebrequest is different. add unique dummy query string on every web request, but I'd prefer more elegant solution. I also tried the following, but it didn't work:
_myHttpWebRequest.BeginGetRequestStream(new AsyncCallback(BeginRequest), new Guid());
In fact, by setting browser history settings it is possible to disable caching. See the following link: [URL] But asking a user to change browser settings is not an option for me.
I am trying to simulate a POST to a form on an external server that does not require any authentication, and capture a sting containing the resulting page. This is what the form looks like:
and Write() throws an exception with "Unable to write data to the transport connection: An established connection was aborted by the software in your host machine." text. I used System.Net tracing and found that something goes wrong when I send the request with Content-Length set.
Specifically if I omit everything that is inside using statement in the code above the server promptly replies with WWW-Authenticate and then the client reposts the request with WWW-Authenticate and everything goes fine except the file in not uploaded and the request fails much later.
I'd like to do the following: send an request without data, wait for WWW-Authenticate, then repeat it with WWW-Authenticate and data. So I tried to modify the code above: first set all the parameters, then call GetResponse(), then do sending, but when I try to set ContentLength property an exception is thrown with "This property cannot be set after writing has started" text. So HttpWebRequest seems to be non-reusable.
How do I reuse it for resending the request without closing the connection?
I have a some problem while Posting xml data Using HttpWebRequest. Actually I want to Post 3 Form variables
2 of them are for credential and the third one is for XML data to an api, The api will authenticate and will process the xml data, and will return success if no error found.
Here is what there documentation says.
The data will be passed to the gateway via an HTTPS FORM post and a string value of "success" will be returned upon successful receipt of the data. Three total FORM variables will be posted, two of which will contain credentials, and the third will contain the HR-XML data. A string value of "error" will be returned if the posting fails for any reason.
Form Fields integration_field1 = 1234, integration_field2=2345pwd, hrxml=form field containing the HR-XML order (string)
I'm trying to ping Google when my web site's sitemap is updated but I need to know which status code does Google or any other service returns. My code is below:
I've searched everywhere for this but I'm unable to solve it by myself. I'm try to webscrape a website using HttpWebRequest. I'm able to login successfuly and to browse through the different pages to obtain all cookies and viewstates as needed. Fiddler supports my claim as I compared all the information. There is one page which I'm unable to load - This page has a certain AJAX loader which prevents me from getting to the page I need. Apperntly page
(1) makes some sort of calculations and when finished transfers to page
(2) using AJAX. If I try to scrape page (2) directly I get an empty page, without the calculations which I need to scrape.
When I send a request to page (1) it just returns the error posted in the subject: 179|error|500|The page is performing an async postback but the ScriptManager.SupportsPartialRendering property is set to false. Ensure that the property is set to true during an async postback.
