How To Create An Httpwebrequest/httpwebresponse
Jun 11, 2010
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.
string urlPayPalEnvironment = "https://www.paypal.com/cgi-bin/webscr";
// Prepare web request.
HttpWebRequest request = WebRequest.Create(urlPayPalEnvironment) as HttpWebRequest;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
[code]...
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Similar Messages:
Dec 6, 2010
[Code]....
My response should be a url.I'l getting respStr="http%3A%2F%2..."How can I convert respStr to string in order to create URI url = new URI(respStr); ?
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Feb 19, 2010
I'm using the following piece of code:
[Code]....
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Jan 6, 2010
I connect to a web address using HttpWebRequest object (http://www.website.com/page1.aspx), this page should redirect me to another page (http://www.website.com/page2.aspx). What I want to do are two things:
Redirect (http://www.website.com/page1.aspx) to (http://www.website.com/page2.aspx) by HttpWebRequest obeject.Get the new URL (http://www.website.com/page2.aspx) from HttpWebResponse.
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Feb 25, 2010
I tried to post data to client HTTPPost URL, as per the client specification I need to post the data using "Post" method and I used the same. But it throws an error "The remote server returned an error: (500)Internal Server Error". in the HTTpWebResponse.My post URL does not have any specific page like http://abc.com/post/post.aspx. the actual URL looks like "http://abc.com/post", Can we post the lead without any specific page like I said in the above URl?
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Dec 6, 2010
Does a HttpWebResponse.StatusCode detect Asp.Net errors? Mainly a yellow screen of death? Some Background: I am working on a simple c# console app that will test servers and services to make sure they are still functioning properly. I assumed since the HttpStatusCodes are enumerated with OK, Moved, InteralServerError, etc... that I could simply do the following.
WebRequest request = WebRequest.Create(url);
request.Timeout = 10000;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response == null || response.StatusCode != HttpStatusCode.OK)
{
// SERVER IS OK
return false;
}
else
{
// SERVER HAS SOME PROBLEMS
return true;
}
I found out this morning however that this doesn't work. An ASP.Net application crashed showing a Yellow Screen Of Death and my application didn't seem to mind because the response.StatusCode equaled HttpStatusCode.OK. What am I missing?
HttpWebResponse response;
try
{
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException webexp)
{
response = (HttpWebResponse)webexp.Response;
}
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Mar 30, 2010
I'm trying to read a response from an encoded apache server, the post works fine but i'm ripping my hair out over the response, it was working yesterday and they've turned off compression now so there is no contenttype encoding getting passed back.I'm using fiddler and getting this response back for the response type below; i'm basically trying to read a XML into a XmlDocument from the responded string and all i'm geetting back is encoded characters no matter what i do, so can someone please give me a hand with this before i make myself bald before 30.
Vary: Accept-Encoding
Content-Length: 51593
Content-Type: text/xml;charset=UTF-8
Server: Apache-Coyote/1.1
[Code]....
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Mar 17, 2011
I would like to call multiple times to a web resource, however I get forbidden when asking the webresponse.
protected void Page_Load(object sender, EventArgs e)
{
Thread[] tt = new Thread[10]; [code]..........
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Sep 22, 2010
I need to display pdf using my web application each time user clicks on image icon.On clicking the image, I will call another web application(imageUrl) which will open up the pdf.Please find the code below:
HttpWebRequest Request = (HttpWebRequest)WebRequest.Create(imageUrl);
Request.UserAgent =
"Client Cert Sample";"
[code]...
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Nov 12, 2010
I have a file, a.pdf, stored on a SharePoint server behind Windows authentication. I want to make a.pdf available through another Web app with forms authentication. Basically, link is clicked and up pops the open / save as dialog for the pdf (or other document file) I've set up my HTTPWebRequest and passed credentials, getting my data into a stream (file.GetResponseStream).
I've tried converting the stream to a byte array and then using response.write or response.output.write with no luck (stream not seekable) I've tried using a streamreader and doing a response.write(streamreader.readtoend()) and response.write(memorystream.toarray(),0,memorystream.toarray().length) with no luck (the message received from the server could not be parsed).
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Oct 12, 2010
i have managed to get the only table from rediff and its working fine the whole table is showing.
1 .But when i try to see the string by responce.write it show only 1st line not the full table..Why??
2. I want to feed this in my data base so the full table can be stored nad retrived..How?
void Share()
{
try[code]....
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Jun 9, 2010
I need to check whether the request will return a 500 Server Internal Error or not (so getting the error is expected). I'm doing this:
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.OK)
return true;
else
return false;
But when I get the 500 Internal Server Error, a WebException is thrown, and I don't want to depend on it to control the application flow - how can this be done?
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May 21, 2010
I have the following code (yes it is winforms but the code could obviously just as easily be a webform).
Stream str = null;
MemoryStream ms = null;
FileStream fs = null;
try
{
[Code]....
My problem is that although the response length is correct at around 21MB, the stream is returned far too quickly (pretty much instant) and the byte array ends up being filled with only a small number of bytes. The response is clearly not returning the full file so what am I doing wrong?
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Dec 22, 2010
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
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Dec 10, 2010
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].....
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Jul 9, 2010
I perform a httpwebrequest without setting the useragent property.The page where I send my request to response with [Code]....
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Apr 4, 2011
I am testing an aspx page I wish to use to post to but I cannot seem to send the certificate over with the data. Here is my client code:
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
string postData = "age=23&state=47";
byte[] data = encoding.GetBytes(postData);
X509Certificate x509certificate = X509Certificate.CreateFromCertFile(@"C:Documents and Settings
cimbaloMy DocumentsDownloadsSSL Certificates estCert.cer");
string key = x509certificate.GetPublicKeyString();
string certData = Encoding.ASCII.GetString(x509certificate.Export(X509ContentType.Cert));
string pks12 = Encoding.ASCII.GetString(x509certificate.Export(X509ContentType.Pkcs12));
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("http://localhost:3493/Index.aspx");
myRequest.Credentials = new NetworkCredential("xxxx", "yyyy");
myRequest.Method = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
myRequest.ClientCertificates.Add(x509certificate);
Stream newStream = myRequest.GetRequestStream();
newStream.Write(data, 0, data.Length);
newStream.Close();
System.IO.StreamReader st = new StreamReader(((HttpWebResponse)myRequest.GetResponse()).GetResponseStream());
Console.Write(st.ReadLine());
and here is the code from my aspx page:
protected void Page_Load(object sender, EventArgs e)
{
if (this.CheckCredentials())
{
string data = this.Context.Request.Form.ToString();
}
}
private bool CheckCredentials()
{
string userName = User.Identity.Name;
HttpClientCertificate certificate = Request.ClientCertificate;
if (certificate.IsPresent)
{
string w = certificate.Get("SUBJECT 0");
return true;
}
return false;
}
There is never a certificate present.
I found this earlier post X509Certificate not getting transmitted to the server
But did not understand the answer. I created a certificate using the MakeCert.exe utility but I do not really understand why it does not work.
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May 13, 2010
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.
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Sep 14, 2010
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.
public XPathNavigator GSASearch(string url, string searchString)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + searchString);
request.CookieContainer = new CookieContainer();
request.Credentials = CredentialCache.DefaultCredentials;
request.ContentType = "text/xml";
request.Method = "POST";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
XPathDocument doc = new XPathDocument(receiveStream);
return doc.CreateNavigator();
}
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...
public XPathNavigator GSASearch(string url, string searchString)
{
CredentialCache credCache = new CredentialCache();
credCache.Add(new Uri(url), "Kerberos", CredentialCache.DefaultNetworkCredentials);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + searchString);
request.CookieContainer = new CookieContainer();
request.PreAuthenticate = true;
request.Credentials = credCache;
request.ContentType = "text/xml";
request.Method = "POST";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
//StreamReader readStream = new StreamReader(receiveStream);
XPathDocument doc = new XPathDocument(receiveStream);
return doc.CreateNavigator();
}
EDIT 3: Ok, looking closer again, the CredentialCache.DefaultCredentials doesn't appear to have my network credentials in it...
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Nov 17, 2010
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();
[Code]....
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Aug 30, 2010
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"
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Dec 1, 2010
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.
[URL]
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(Url);
request.ContentType = "application/x-www-form-urlencoded";
request.Credentials = new NetworkCredential(Username, Password);
request.Method = "POST";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.Headers.Add("Accept-Language: en-us,en;q=0.5");
request.Headers.Add("Accept-Encoding: gzip,deflate");
request.Headers.Add("Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7");
request.KeepAlive = true;
request.Headers.Add("Keep-Alive: 300");
request.Referer = Url;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705;)";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
string tmp = reader.ReadToEnd();
}
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Oct 29, 2010
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..
<form action="https://myurl.com/samplepage.cfm" method="post" >
integration_id<input type="text" name="integration_id" value="id" /><br />
integration_pwd<input type="text" name="integration_pwd" value="pwd" /><br />
<textarea name="hrxml" style="height: 404px; width: 593px">
<?xml version="1.0" encoding="UTF-8"?>
<BackgroundCheck account="test" userId="test" password="test">
<BackgroundSearchPackage>
<ReferenceId>
<IdValue>12345678</IdValue>
</ReferenceId>
<PersonalData>
<PersonName>
<GivenName>TEST</GivenName>
<FamilyName primary="undefined">TEST</FamilyName>
</PersonName>
<DemographicDetail>
<GovernmentID countryCode="US" issuingAuthority="SSN">00000000000000</GovernmentID>
<DateOfBirth>1901-01-01</DateOfBirth>
</DemographicDetail>
</PersonalData>
</BackgroundSearchPackage>
</BackgroundCheck>
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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.
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Jun 12, 2010
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.
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