Our app uses oauth2 with linkedin to post to our customer's LI profile. The method to authorize a user works fine however the next section of code to get the access token results in an "Underlying connection was closed: An unexpected error occurred on a send" exception. The inner exception says "Authentication failed because the remote party has closed the transport stream".
I've verified our application credentials are correct and this had been working up until today as far as we can tell. The errors make it sound like an issue on LinkedIn's side, but I'm not 100% sure. Any ideas on how I can troubleshoot this?
Here's the code of the method that's failing.
var accessCodeUri =
string.Format(
"https://www.linkedin.com/uas/oauth2/accessToken?format=json&grant_type=authorization_code&code={0}&redirect_uri={1}&client_id={2}&client_secret={3}",
authorizationCode,
redirectUri.AbsoluteUri,
linkedInApiKey,
linkedInSecretKey);
string responseFromServer = string.Empty;
WebRequest request = WebRequest.Create(new Uri(accessCodeUri).AbsoluteUri);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = 0;
request.Headers["UserAgent"] = "JB oAuth2";
Stream dataStream = request.GetRequestStream();
string postData = string.Empty;
byte[] postArray = Encoding.ASCII.GetBytes(postData);
dataStream.Write(postArray, 0, postArray.Length);
dataStream.Close();
WebResponse response = request.GetResponse();
dataStream = response.GetResponseStream();
var reader = new StreamReader(dataStream);
responseFromServer = reader.ReadToEnd();
reader.Close();
dataStream.Close();
response.Close();
return responseFromServer;
Adding the following to the top of the method seems to have fixed the problem.
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
Related
I want to log in to a website setting.fun-freak.com just for learning purpose by using a windows desktop application. I used webrequest and tried as
string formUrl = "http://setting.fun-freak.com/Account/Login.aspx";
string formParams = string.Format("ctl00$MainContent$txtUserName=loginId&ctl00$MainContent$txtPassword=password");
string cookieHeader;
WebRequest req = WebRequest.Create(formUrl);
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
byte[] bytes = Encoding.ASCII.GetBytes(formParams);
req.ContentLength = bytes.Length;
using (Stream os = req.GetRequestStream())
{
os.Write(bytes, 0, bytes.Length);
}
using (StreamReader sr = new StreamReader(req.GetResponse()))
{
pageSource = sr.ReadToEnd();
}
I assume that this pageSource object will have html of next page after login page (if login succesfully), but it contains the same login page in return.
How can I successfully log in to this website and get home page in response?
Moreover, this (setting.fun-freak.com) my own site, built in asp.net webforms. Here is button click event code (May be it help to dig out the problem)
UserContainer User = new UserProcessing().Authenticate(txtUserName.Text, txtPassword.Text);
if (User != null)
{
Session["User"] = User;
FormsAuthentication.RedirectFromLoginPage(txtUserName.Text, RememberMe.Checked);
}
else
{
lblMessage.Text = "Invalid credentials. Please try again";
}
Any help will be appreciated.
I added this piece of code as it is, but it still not working .
it is taken from http://msdn.microsoft.com/en-us/library/debx8sh9.aspx
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create("http://setting.fun-freak.com/Account/Login.aspx");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = "ctl00$MainContent$txtUserName=UserName&ctl00$MainContent$txtPassword=Password";
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
WebResponse response = request.GetResponse();
// Display the status.
Console.WriteLine(((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Display the content.
Console.WriteLine(responseFromServer);
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();
The problem is that the object responseFromServer do not show then content of next to the login page. Its shows only login page contents.
I have a webapp that accepts a messageid and status as a QueryString from an external server. I am migrating the webapp to a new server, but I need the new server to forward the QueryString to the old server in case the old server is still waiting for updates, and until I can get my clients migrated over.
The External website calls my webapp with ?MSGID=12345678&RESPONSE=0
eg:
http://dlrnotify.newserver.com/GetResponse.aspx?MSGID=12345678&RESPONSE=0
I need my code behind GetResponse.aspx to process the message locally, and then forward the request to the old server. eg, calling:
http://dlrnotify.oldserver.com/GetResponse.aspx?MSGID=12345678&RESPONSE=0
I don't really want to redirect the user to the old web server, just to pass the querystring on from my app.
I can get the QueryString by calling Response.QueryString.ToString() I just need to know how to post that to the old server without upsetting anything.
Sorry if this is a dumb question, I don't work with web apps very often and am obviously using the wrong search terms.
You can use HttpWebRequest and HttpWebResponse for this. Below is an example to use thses
Uri uri = new Uri("http://www.microsoft.com/default.aspx");
if(uri.Scheme = Uri.UriSchemeHttp)
{
HttpWebRequest request = HttpWebRequest.Create(uri);
request.Method = WebRequestMethods.Http.Get;
HttpWebResponse response = request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string tmp = reader.ReadToEnd();
response.Close();
Response.Write(tmp);
}
Sample Code on how to Post Data to remote Web Page using HttpWebRequest
Uri uri = new Uri("http://www.amazon.com/exec/obidos/search-handle-form/102-5194535-6807312");
string data = "field-keywords=ASP.NET 2.0";
if (uri.Scheme == Uri.UriSchemeHttp)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
request.Method = WebRequestMethods.Http.Post;
request.ContentLength = data.Length;
request.ContentType = "application/x-www-form-urlencoded";
StreamWriter writer = new StreamWriter(request.GetRequestStream());
writer.Write(data);
writer.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string tmp = reader.ReadToEnd();
response.Close();
Response.Write(tmp);
}
After executing your code (process message) on the new server, manually generate a HttpWebRequest which should be to your old server with the same querystring as you already figured out to form.
I have a task which is same as your post. But there is a little more in that.
As we have two web applications, one in asp.net and other in PHP. In both we create user profiles. Now the task is to Create users in Asp.NET application and we need to save the same information in PHP application from Asp.Net app.
I am using the below code for that but it is not wroking, Can you please look at it and let me know what I am missing.
CookieContainer cookies = new CookieContainer();
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(#"http://localhost/admin/config/popup_user_info_brand.php");
request.PreAuthenticate = true;
request.AllowWriteStreamBuffering = true;
request.CookieContainer = cookies; // note this
request.Method = "POST";
string boundary = System.Guid.NewGuid().ToString();
string Username = "admin";
string Password = "admin";
if (!string.IsNullOrEmpty(Username) && !string.IsNullOrEmpty(Password))
{
request.Credentials = new NetworkCredential(Username, Password);
request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
StringBuilder sb = new StringBuilder();
sb.AppendLine("Content-Disposition: form-data; name=\"name\"");
sb.AppendLine("Singh");
sb.AppendLine("Content-Disposition: form-data; name=\"username\"");
sb.AppendLine("Singh123");
sb.AppendLine("Content-Disposition: form-data; name=\"email\"");
sb.AppendLine("a#b.com");
sb.AppendLine("Content-Disposition: form-data; name=\"password\"");
sb.AppendLine("P#ssword");
// This is sent to the Post
byte[] bytes = Encoding.UTF8.GetBytes(sb.ToString());
request.ContentLength = bytes.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Length);
requestStream.Flush();
requestStream.Close();
using (WebResponse response = request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
HttpContext.Current.Response.Write(reader.ReadToEnd());
}
}
}
}
Note:- PHP web site is a 3rd party, we have no access on code.
Thanks,
Ginni.
I get an error when trying to retrieve word document by webservice
HttpWebRequest request;
Uri uri = new Uri(serverUrl +
"/bare.aspx/" + Request.PathInfo);
request = (HttpWebRequest)WebRequest.CreateDefault(uri);
request.KeepAlive = false;
request.AllowAutoRedirect = false;
request.ReadWriteTimeout = -1;
request.Timeout = -1;
request.Credentials = System.Net.CredentialCache.DefaultCredentials;
request.Method = "POST";
request.ContentType = "application/octet-stream";
// Serialize argument into request stream
Hashtable arguments = new Hashtable();
arguments["templateFile"] = templateFile;
arguments["hSetDataSource"] = hSetDataSource;
arguments["hSetRepeatBlock"] = hSetRepeatBlock;
arguments["messageForEmptyWord"] = messageForEmptyWord;
arguments["hImageBefore"] = hImageBefore;
arguments["hImageAfter"] = hImageAfter;
arguments["hImageInsideRepeater"] = hImageInsideRepeater;
MemoryStream buf = new MemoryStream();
BinaryFormatter fmt = new BinaryFormatter();
fmt.Serialize(buf, arguments);
request.ContentLength = buf.Length;
Stream reqStream = request.GetRequestStream();
buf.WriteTo(reqStream);
reqStream.Close();
buf.Close();
// Retreive word document from response and return it
// TODO: refactor this to stream directly into the response
HttpWebResponse resp = (HttpWebResponse)request.GetResponse();
When I check the webservice response (HttpWebResponse resp), I get the following error:
System.Net.WebException: The remote server returned an error: (404) Not Found.
I don't understand where is the problem, thank you in advance for your help.
You are not hitting the endpoint. A 404 means the server could not find the URL you are requesting. Verify your .asmx URL by putting it in your web browser. If that works then make sure you code is using that same URL.
I send programatically a request to remote server:
string xml = "SomeXML Data";
string url = #"http://someserver.com";
WebRequest request = WebRequest.Create(url);
request.Method = "Post";
request.ContentType = "text/xml";
//The encoding might have to be chaged based on requirement
UTF8Encoding encoder = new UTF8Encoding();
byte[] data = encoder.GetBytes(xml); //postbody is plain string of xml
request.ContentLength = data.Length;
Stream reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
System.Net.WebResponse response = request.GetResponse();
System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream());
string str = reader.ReadToEnd();
but this code throws error:
The remote server returned an error: (401) Unauthorized.
I know user/pass to autorize when IE ask me.
Could anyone help me how to send authorized request?
Thanks!
webClient.Credentials = new NetworkCredential("Login", "Password");
Server seems to use Windows Authentication - although I am only guessing. If it is so, add this line:
request.Credentials = CredentialCache.DefaultCredentials;
looks like the server is using windows integrated security?
try something like this
WebRequest req = WebRequest.Create(tokenUri);
req.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested;
req.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
I am writing a Web service client in C# which takes the URL of the web Service, and a web method name.
I want to check if thew Web method actually receives an int and returns a DataTable, and if this is true, it should call it and return the DataTable.
I have found a couple of posts where this is accomplished compiling dynamically the Proxy class.
But for my case this'd be too expensive, because the client is actually a WSS WebPart, and I don't want to do this every time the page is rendered; only when the properties are changed.
In the end of the day web service description is just an XML file. You can grab it by requesting service.asmx?WSDL:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:1753/Service1.asmx?WSDL");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
string xml = reader.ReadToEnd();
Once you have service description you can parse it and check method signature. Then, you can invoke the method using HTTP POST:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:1753/Service1.asmx?HelloWorld");
request.Method = "POST";
request.ContentType = "application/soap+xml; charset=utf-8";
byte[] data = Encoding.UTF8.GetBytes(
#"<?xml version='1.0' encoding='utf-8'?>
<soap12:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap12='http://www.w3.org/2003/05/soap-envelope'>
<soap12:Body>
<HelloWorld xmlns='http://tempuri.org/' />
</soap12:Body>
</soap12:Envelope>");
request.ContentLength = data.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(data, 0, data.Length);
requestStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
string xml = reader.ReadToEnd();
If the Web Service is always the same (i.e. the method is the same as well as what it returns) and uit's just the url that might change, then just add a web reference to the project with the webpart in it, the set the Url of the proxy like so:
using (var serviceProxy = new ServiceProxy())
{
serviceProxy.Url = somepropertysetbythewebpart;
// make call to method here
}
After a lot of resarching I found out how to do it. The code of the selected answer is almost there, but I had to add the SOAPAction in the header and also change the ContentType.
Here is the entire code:
var strRequest = #"<soap12:Envelope>
...
</soap12:Envelope>";
string webServiceUrl = "http://localhost:8080/AccontService.svc";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(webServiceUrl);
request.Method = "POST";
request.ContentType = "text/xml;charset=UTF-8";
request.Accept = "text/xml";
request.Headers.Add("SOAPAction", "http://tempuri.org/IAccountService/UpdateAccount");
byte[] data = Encoding.UTF8.GetBytes(strRequest);
request.ContentLength = data.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(data, 0, data.Length);
requestStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
string responseXmlString = reader.ReadToEnd();
return new HttpResponseMessage()
{
Content = new StringContent(responseXmlString, Encoding.UTF8, "application/xml")
};