HttpWebRequest And User Agent ?
Jul 9, 2010I perform a httpwebrequest without setting the useragent property.The page where I send my request to response with [Code]....
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Table1 columns[code]....
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Visual Studio 2010, version 10.0.30319.1 RTMRel
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var request = (HttpWebRequest)WebRequest.Create("http://localhost/bla");
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "GET";
request.CookieContainer = new CookieContainer();
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In another place... (inside "bla")
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'get the values
Dim fn As String = TxtFirstName.Text
Dim ln As String = TxtLastName.Text[code].....
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[code]...
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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");
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string certData = Encoding.ASCII.GetString(x509certificate.Export(X509ContentType.Cert));
string pks12 = Encoding.ASCII.GetString(x509certificate.Export(X509ContentType.Pkcs12));
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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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HttpWebRequest With Kerberos Authentication?
Sep 14, 2010I 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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// 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, 2010I 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"
View 2 RepliesC# - Login To Web Page Using HttpWebRequest?
Dec 1, 2010I 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();
}
Posting XML Data With Some Fields Using HttpWebrequest?
Oct 29, 2010I 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>
StreamReader ReadToEnd() After HttpWebRequest EndGetResponse ()
Jan 18, 2010I 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.
Disable Cache In Silverlight HttpWebRequest?
Jun 12, 2010My 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.
C# - Using HttpWebRequest To POST To A Form On An Outside Server?
Jan 26, 2010I 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:
<FORM METHOD="POST" ACTION="/controller" NAME="GIN">
<INPUT type="hidden" name="JSPName" value="GIN">
Field1:
<INPUT type="text" name="Field1" size="30"
maxlength="60" class="txtNormal" value="">
</FORM>
This is what my code looks like:
ASCIIEncoding encoding = new ASCIIEncoding();
string postData = "Field1=VALUE1&JSPName=GIN";
byte[] data = encoding.GetBytes(postData);
// Prepare web request...
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("https://XXX/controller");
myRequest.Method = "POST";
myRequest.ContentType = "text/html";
myRequest.ContentLength = data.Length;
Stream newStream = myRequest.GetRequestStream();
// Send the data.
newStream.Write(data, 0, data.Length);
StreamReader reader = new StreamReader(newStream);
string text = reader.ReadToEnd();
MessageBox.Show(text);
newStream.Close();
Currently, the code returns "Stream was not readable".