I am trying to create a HttpClientHandler which contains the proxyUri and credentials like username and password without hardcoding them.
Below is the code:
HttpClientHandler clientHandler = new HttpClientHandler();
var proxy = HttpWebRequest.GetSystemWebProxy();
Uri proxyUri = proxy.GetProxy(new Uri("http://www.google.com"));
WebProxy proxyObject = new WebProxy(proxyUri);
proxyObject.UseDefaultCredentials = true;
clientHandler.Proxy = proxyObject;
clientHandler.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
The issues that I am encountering:
System.Net.CredentialCache.DefaultCredentials is null.
Is there an easier way of doing proxy.GetProxy(new Uri("http://www.google.com"))? From what I've research around, there used to be a method which is not deprecated. My issue with that line of code is that I don't wish to have hardcodations like that google link. Is there any other way of doing that?
Related
I'm new at anglesharp. I tried the proxy change at the documentation but it didnt work.
Now i'm using this, it works well with webclient but it isnt working with AngleSharp.
The code i'm trying is ;
var handler = new HttpClientHandler()
{
Proxy = new WebProxy(String.Format("{0}:{1}", "myProxy", "myPort"), false),
PreAuthenticate = true,
UseDefaultCredentials = false,
};
var config = Configuration.Default.WithJs().WithCookies().WithDefaultLoader().With(handler);
//Create a new context for evaluating webpages with the given config
var context = BrowsingContext.New(config);
var document = await context.OpenAsync("https://api.ipify.org?format=json");
Console.WriteLine(document.DocumentElement.OuterHtml);
I'm not getting any error, proxy is not working thats it. I'm getting my original ip not the proxys.
But with WebClient it works well.
You just add something (handler, i.e., a HttpClientHandler instance) to AngleSharp's configuration - something that will not be used by anything in AngleSharp.
First of all AngleSharp's internal HTTP client is only a default client. For compatibility reasons AngleSharp cannot ship with HttpClient instead if uses HttpWebRequest. This also allows you setting a proxy.
Now if you want to use your code I suggest you use AngleSharp.Io (https://www.nuget.org/packages/AngleSharp.Io or https://github.com/AngleSharp/AngleSharp.Io). It's quite simple and straight forward:
var handler = new HttpClientHandler
{
Proxy = new WebProxy(String.Format("{0}:{1}", "myProxy", "myPort"), false),
PreAuthenticate = true,
UseDefaultCredentials = false,
};
var config = Configuration.Default
.WithRequesters(handler)
.WithDefaultLoader()
.WithJs()
.WithTemporaryCookies()
.WithDefaultLoader();
var context = BrowsingContext.New(config);
var document = await context.OpenAsync("https://api.ipify.org?format=json");
Console.WriteLine(document.DocumentElement.OuterHtml)
Only .WithRequesters(handler) has been added. This adds the requesters from AngleSharp.Io. By providing handler we can configure the HttpClient.
Hope that helps!
I am trying to connect to a proxy via this piece of code using HttpClient.
i would like to connect to a proxy strictly using HttpClient, or if unable to. using any c# library as long as the task is achieved.
HttpClientHandler handler = new HttpClientHandler();
//setup web proxy and credentials
var webproxy =
new WebProxy("94.232.55.98", 8080)//ip and port number
{
UseDefaultCredentials = false,
Credentials = CredentialCache.DefaultCredentials
};
handler = new HttpClientHandler
{
Proxy = webproxy,
UseProxy = true,
PreAuthenticate = true,
UseDefaultCredentials = false
};
container = new CookieContainer();
handler.CookieContainer = container;
handler.UseCookies = true;
client = new HttpClient(handler);
//Query a url and get its contents, but the request was not using any proxy seemingly
HttpResponseMessage responseMessage = client.GetAsync("https://shop.shoprite.com/").Result;
Looking at the code i am in need of guidance on how to connect httpclient to a AU proxy, and how to possibly get a proxy with or without credentials and to make it work all together.
I am trying to access a website geo blocked only in Australia that is why im trying to use a proxy.
Thanks in advance!
EDIT:
I have retrieved my proxy from this site ( looking at AU proxies )
https://free-proxy-list.net/ and i get the first ip and put it on WebProxy, having 8080 as port number as an example
but it doesnt seem to work.
When i am about to request the site, i am having an error like this accessing a site that is geo blocked anywhere else except in australia.
It looks like your code is correct, however the host you are trying to connect to is not accessible through the proxy you are trying to use. You can get a more useful error message by altering the last few lines to utilise the EnsureSuccessStatusCode method. This will throw an exception if the status code is not 2XX.
using (var client = new HttpClient(handler))
using (var responseMessage = await client.GetAsync("http://shop.shoprite.com/"))
{
responseMessage.EnsureSuccessStatusCode();
responseMessage.Dump();
}
I have a Microsoft.Rest.ServiceClient generated with autorest. And I want to access a REST API secured with Windows Authentication and Basic Authentication.
The goal is to use Windows Authentication. I tried it as follows:
var handler = new HttpClientHandler
{
UseDefaultCredentials = true,
};
this.InitializeHttpClient(handler);
This does not work, I get:
System.Net.Http.HttpRequestException: An error occurred while sending the request.
---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.
---> System.ComponentModel.Win32Exception: The target principal name is incorrect
When I use Basic Authentication it works.
this.Credentials = new BasicAuthenticationCredentials
{
UserName = Configuration.User,
Password = Configuration.Password
};
This setup of the ServiceClient is done in the constructor of
MyClient : Microsoft.Rest.ServiceClient
What do I need to add to the client to get Windows Authentication working?
Edited:
It looks like the problem is on server side. Settings in IIS.
The client would work as expected.
This basically reiterates what's already covered in the OP and by #Anders, in my preferred syntax...
var windowsAuthHandler = new HttpClientHandler { UseDefaultCredentials = true };
var webApiUri = new System.Uri("https://localhost:8080");
var apiClient = new MyAutoRestClient(webApiUri ,windowsAuthHandler);
If you're skimming, the OP seems to indicate this doesn't work, when, indeed it does. But, as the OP later states, be sure to start with IIS to make sure it's configured right
I use a similar solution for passing on Windows credentials, and it works nicely.
The only difference is that I use the constructor overload of ServiceClient that takes a HttpClientHandler instance, rather than calling InitializeHttpClient() and it looks something like this:
public class MyClient : ServiceClient<MyClient>
{
public MyClient() : base(new HttpClientHandler { UseDefaultCredentials = true }) {}
}
However, the part of your 401-message that says "The target principal name is incorrect" looks suspicious. Your problem may arise from some issues in your AD-configuration rather than in the ServiceClient-configuration.
#bkwdesign has right
var credentials = new Microsoft.Rest.BasicAuthenticationCredentials();
var handler = new System.Net.Http.HttpClientHandler() { UseDefaultCredentials = true };
var uri = new Uri("http://your-rest-api:8008");
var svc = new WebApplication1Client(uri, credentials, handler);
//WebApplication1Client : ServiceClient<WebApplication1Client>, IWebApplication1Client
This is the way how to pass credentials from MVC to WebAPI Windows Authentication or impersonate credentials
Maybe other options:
var handler = new HttpClientHandler() { Credentials = CredentialCache.DefaultCredentials };
var handler = new HttpClientHandler() { Credentials = CredentialCache.DefaultNetworkCredentials };
I'm trying to get my generated WCF ServiceClient to send its requests to the WCF service through a HTTP (not HTTPS) proxy with username/password authentication, however I just can't get it work. My WCF service uses basicHttpBinding so I tried to configure my ServiceClient instance like so:
var svc = new ServiceClient();
var b = svc.Endpoint.Binding as BasicHttpBinding;
b.ProxyAddress = new Uri(proxyAddress);
b.UseDefaultWebProxy = false;
b.Security.Mode = BasicHttpSecurityMode.Transport;
b.Security.Transport.ClientCredentialType = HttpClientCredentialType.None;
b.Security.Transport.ProxyCredentialType = HttpProxyCredentialType.Basic;
svc.ClientCredentials.UserName.UserName = proxyUsername;
svc.ClientCredentials.UserName.Password = proxyPassword;
This however results in a System.ArgumentException saying:
The provided URI scheme http is invalid. expected https
When I set the b.Security.Mode to BasicHttpSecurityMode.None though, it seems the HTTP proxy settings are ignored by WCF altogether!
The second solution I tried was to set the DefaultWebProxy property of WebRequest and set the UseDefaultWebProxy property to true such as so:
var webProxy = new WebProxy(proxyAddress, true);
webProxy.Credentials = new NetworkCredential(proxyUsername, proxyPassword);
WebRequest.DefaultWebProxy = webProxy;
var svc = new ServiceClient();
var b = svc.Endpoint.Binding as BasicHttpBinding;
b.UseDefaultWebProxy = true;
However this also doesn't work and ServiceClient doesn't send it's requests through the HTTP proxy.
I'm out of ideas here so please let me know what I am doing wrong, thank you!
Set the security mode to BasicHttpSecurityMode.TransportCredentialOnly. This allows for passing plain-text authentication details over HTTP.
I am trying to write a simple POST request to google-analytics server, here is my code :
using (var client = new System.Net.WebClient())
{
var values = new System.Collections.Specialized.NameValueCollection();
//values["v"] = "1";
//values["t"] = "event";
//values["tid"] = trackingID;
//values["cid"] = clientID;
//values["ec"] = eventCategory.ToString();
//values["ea"] = eventAction.ToString();
//values["el"] = eventAction.ToString();
var endpointAddress = "http://www.google-analytics.com/collect";
var response = client.UploadValues(endpointAddress, values);
var responseString = System.Text.Encoding.Default.GetString(response);
}
This code works fine in a console application, but not on a website application (hosted on IIS or run on Visual Studio 2013) or in a WCF (likewise).
I checked using
WindowsIdentity.GetCurrent()
in both the site, the WCF service and the application, everytime the DOMAIN and USERNAME are my own, so I don't think that is the problem. I have tried using .NET impersonation without success.
I've tried setting the application pool identity to my user, ApplicationPoolIdentity or NetworkService, without success.
I've also tried changing the authentication mode to AnonymousUser or Windows Authentication. I've tried changing the physical access path, without success.
I'm at work behind a proxy, at home I've tried it and it worked well.
Does anyone has an idea as to why it doesn't work ?
Try supplying the proxy details when making the request. Assuming you are behind a proxy.
using (var client = new System.Net.WebClient())
{
WebProxy proxy = new WebProxy("localproxyIP:8080", true);
proxy.Credentials = new NetworkCredential("domain\\user", "password");
WebRequest.DefaultWebProxy = proxy;
client.Proxy = proxy;
var values = new System.Collections.Specialized.NameValueCollection();
//values["v"] = "1";
//values["t"] = "event";
//values["tid"] = trackingID;
//values["cid"] = clientID;
//values["ec"] = eventCategory.ToString();
//values["ea"] = eventAction.ToString();
//values["el"] = eventAction.ToString();
var endpointAddress = "http://www.google-analytics.com/collect";
var response = client.UploadValues(endpointAddress, values);
var responseString = System.Text.Encoding.Default.GetString(response);
}