C# - How To Change The Request IP In HttpWebRequest
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.
I know you are all going to answer "use a debugging proxy server like Fiddler" but it's not that simple.
Here's my situation: I have some code that runs on a server, in an ASP.NET page code-behind (aspx.cs), which (among other things) establishes a connection to another server, grabs some stuff, and then formats it and returns it to the browser.
The problem is that the other server is doing the wrong thing, and so I want to be able to pass a debugging flag into the page (via the query string, e.g. ?debug=true) so that it will print out the completely raw HTTP request that it is sending to the other server so I can see what the heck is wrong. This code is running in several places so I want to be able to just pass in this flag on dev, staging, or production and just see the request, without having to figure out whether the production servers can talk to some proxy server that exists somewhere, etc.
You would think that it would be easy to do this, right? So I feel like I'm crazy or something but I looked at the reference for HttpWebRequest and its parent class WebRequest and -- nothing. No can do. You would think Microsoft would have thought of this. The closest thing is that you can access the "Headers" collection but when I tried it, it omitted some really important headers like "content length" -- so it must be "lying" to me (I know it's lying, because I know for a fact that the remote server is returning a 200 status -- the request is successful, it's just returning bad/different/wrong data)
Here is the asked-for code example:
HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://www.whatever.com"); req.Method = ... whatever ...; ... other setup for the request ... /* At this point we are about to send the request. What does the raw HTTP request look like? */ HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Im trying to send some xml inside a soap request to a webservice using the HttpWebRequest class. I know this isnt the best way, but my hands are tied by company policy so i have to do it this way. My webmethod has an input parameter "SourceXML" so my soap request has this node
<SourceXML></SourceXML>
I need to insert the xml in this node but whenver I insert it and try to send it to my web method I get an error "400 bad request"
Is this even possible ? I need to insert the xml as a string literal and read it in the web method
Using a Windows application I am sending a web request to a web page and getting the response back using the following code
HttpWebRequest oRequest1 = (HttpWebRequest)WebRequest.Create(url); oRequest1.ContentType = "text/xml"; using (Stream stream = oRequest1.GetRequestStream()) { stream.Write(fileBytes1, 0, fileBytes2.Length); //fileBytes1 - contains the data of first request } HttpWebResponse Response1 = (HttpWebResponse)oRequest1.GetResponse(); ->The above code works fine But I need to enhance the code to accomodate following additional scenario ->Send another request to the same web app and ->get the response back
The first request sent contains the credentials to access the web application the second request sent doesn't have credentials, it must use the credentials of first request. I am using the same (following) code for the second request too. I get an error saying that it's looking for credentials
I am getting lot of errors for HttpRequestValidationException in my event log.
Is it possible to HTMLEncode all the inputs from override of ProcessRequest on web page. I have tried this but it gives context.Request.InputStream.CanWrite == false always.
Is there any way to HTMLEncode all the feilds when request is made?
public override void ProcessRequest(HttpContext context) { if (context.Request.InputStream.CanRead) { IEnumerator en = HttpContext.Current.Request.Form.GetEnumerator(); while (en.MoveNext()) { //Response.Write(Server.HtmlEncode(en.Current + " = " + //HttpContext.Current.Request.Form[(string)en.Current])); } long nLen = context.Request.InputStream.Length; if (nLen > 0) { string strInputStream = string.Empty; context.Request.InputStream.Position = 0; byte[] bytes = new byte[nLen]; context.Request.InputStream.Read(bytes, 0, Convert.ToInt32(nLen)); strInputStream = Encoding.Default.GetString(bytes); if (!string.IsNullOrEmpty(strInputStream)) { List<string> stream = strInputStream.Split('&').ToList<string>(); Dictionary<int, string> data = new Dictionary<int, string>(); if (stream != null && stream.Count > 0) { int index = 0; foreach (string str in stream) { if (str.Length > 3 && str.Substring(0, 3) == "txt") { string textBoxData = str; string temp = Server.HtmlEncode(str); //stream[index] = temp; data.Add(index, temp); index++; } } if (data.Count > 0) { List<string> streamNew = stream; foreach (KeyValuePair<int, string> kvp in data) { streamNew[kvp.Key] = kvp.Value; } string newStream = string.Join("", streamNew.ToArray()); byte[] bytesNew = Encoding.Default.GetBytes(newStream); if (context.Request.InputStream.CanWrite) { context.Request.InputStream.Flush(); context.Request.InputStream.Position = 0; context.Request.InputStream.Write(bytesNew, 0, bytesNew.Length); //Request.InputStream.Close(); //Request.InputStream.Dispose(); } } } } } } base.ProcessRequest(context); }
I have completd my project, in that project i used Request.QueryString["id"], its working fine, in this project if change the "id" securities pages also opening now what can i do?
I have a requirement whereby I need to be able to change the controller being used based upon a parameter. I am creating an application that needs to be dynamic enough to be able to change controllers on the fly. Let me explain further;
When the application starts a dictionary of custom controller names is loaded with a controller name as the key and a custom controller name as the value. This will be help in the application scope.
When a request is made I need to access the requested controller name, use that name and check to see if it matches a key in my controller dictionary and if so, replace the requested controller name with the custom controller name from the dictionary.
example;
My dictionary will contain data as follows Key: 'Home', Value: 'Home_IN' Key: 'Customer', Value: 'Customer_BE'
Now, the following request is made 'User/Edit/1'. Does the controller name exist in the dictionary? No, continue with original request.
Now, the following request is made 'Home/Details/2'. Does the controller name exist in the dictionary? Yes, replace the original controller name 'Home' withe custom controller name 'Home_IN' so changing the requested URL to be 'Home_IN/Details/2'.
Does this make sense?
My problem here is knowing exactly where in the request cycle I need to do this?
I am assuming I need to create my own custom controller factory?
I want to be able to (in code) tell the page to refresh at that point ignoring anything else it was going to do.
Explanation:
I have a property lets call it AllUsers
AllUsers { return Database.GetAllUsers(); }
Now I have put it like this because in my code I want to just use this property to browse all the users and not have to check if its null or not up to date. The problem is if my method .GetAllUsers() throws an exception e.g. database is unavailable. If this happens I want to display a message to the user and reload the page to its initial state.
Now I can reload the page using Response.AppendHeader("Refresh", "0;URL=ThisPage.aspx");
but how can I abort all code? because if I use this where I have placed my method the code will run and then reload on the next page load.
Should I change by property design? I wanted to have a property which would always be valid and up to date so any code using it wouldn't have to worrie
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 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..
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.
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)
