I find many example how use Privoxy/TOR for proxy. For example: How to use Tor to make a C# HttpWebRequest
First I installed Vidalia Bundle and than also Privoxy.
Vidalia Bundle using address 127.0.0.1:9115
Privoxy using address 127.0.0.1:8118
I try in code create request on server http://whatismyipaddress.com/.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://whatismyipaddress.com/");
request.Proxy = new WebProxy("127.0.0.1:8118");
using (var response = request.GetResponse())
{
using (var reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("utf-8")))
{
webBrowser1.DocumentText = reader.ReadToEnd();
}
}
But this server still see my IP address. What I am doing wrong ? Any advance, thank you.
Edit, with leppie advice:
I use this constructor :
request.Proxy = new WebProxy("127.0.0.1",8118);
But server still see my IP adress. :(
Application is using Privoxy on port 8118. I need foward on 9115-this is TOR port.
I suspect the url is wrong.
You should probably use the WebProxy(string Host, int Port) constructor.
This works for a remote proxy:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://whatismyipaddress.com/");
request.Proxy = new WebProxy("110.139.166.78:8080");
using (var req = request.GetResponse())
{
using (StreamReader reader = new StreamReader(req.GetResponseStream()))
{
Console.WriteLine(reader.ReadToEnd());
}
}
Console.ReadLine();
Related
I want to get file list from owncloud on my ASP site. I was succeed using
curl -X PROPFIND -u user:password "http://yourserver.com/owncloud/remote.php/webdav/" from linux but I can't get the same result using default http request with propfind type in order to use it then in c# https://user:password#host/owncloud/remote.php/webdav. I get 400 code as a result on my request. Also I tried webdavclient from nuget but received method not allowed exception.
IClient c = new Client(new NetworkCredential { UserName = "user", Password = "password" });
var client = new WebDAVClient.Client(new NetworkCredential());
c.Server = "xxx.com/owncloud/remote.php/webdav/";
var isfolderCreated = c.CreateDir("/", "lalala").Result;
Could anybody say to me how to send http request to owncloud to get the file list? I tried webdav protocol that is used by clients but maybe I should try anything else?
I found the issue that prevented me. I just didn't use basic authorization correctly in http request. Since I add correct credentials I could send the http request and get the response. And here is the code I use in c#:
var request = (HttpWebRequest)WebRequest.Create("xxx.com/owncloud/remote.php/webdav/");
request.Credentials = new NetworkCredential("user", "password");
request.PreAuthenticate = true;
request.Method = #"PROPFIND";
request.Headers.Add(#"Translate", "F");
var httpGetResponse = (HttpWebResponse)request.GetResponse();
using (var responseStream = httpGetResponse.GetResponseStream())
{
long responseLength = httpGetResponse.ContentLength;
using (var streamReader = new StreamReader(responseStream, Encoding.UTF8))
{
var files = XElement.Parse(streamReader.ReadToEnd());
streamReader.Close();
}
responseStream.Close();
}
In my .NET project, I have to use HTTP GET request to get weather info for my city from API. Because of my JavaScript background I thought "OK, so all I need is something like app.get(url, body)", so I started with something like this:
using (var client = new WebClient())
{
var responseString = client.DownloadString("http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=" + city + "&CountryName=" + country);
string xmlString = DecodeXml(responseString);
return xmlString;
}
Unfortunately for me it turned out, that I have to use WCF to get the data. I searched the web for some tutorials, but I couldn't find anything with getting the data from outer sources, just creating own API.
I'm not a native speaker, so maybe I'm just out of words to look for the solution, but it would be awesome if you could give me some advice.
Assuming you are using Visual Studio. Add Service Reference, and then type "http://www.webservicex.net/globalweather.asmx" into the address and hit Go. It'll auto-generate the end point for you to use.
Then the code is something like:
ServiceReference1.GlobalWeatherSoapClient client = new ServiceReference1.GlobalWeatherSoapClient("GlobalWeatherSoap");
string cities = client.GetCitiesByCountry("Hong Kong");
If you want to just use HTTP GET, you can do something like this:
var city = "Dublin";
var country = "Ireland";
WebRequest request = WebRequest.Create(
"http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=" +
city +
"&CountryName=" + country);
request.Credentials = CredentialCache.DefaultCredentials;
WebResponse response = request.GetResponse();
Console.WriteLine(((HttpWebResponse)response).StatusDescription);
Stream dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
string responseFromServer = reader.ReadToEnd();
Console.WriteLine(responseFromServer);
reader.Close();
response.Close();
Console.ReadLine();
Please note, I have not HTML decoded the response here, you can simply use HttpUtility.HtmlDecode for that.
Also, you will need to include the following using statements:
using System.IO;
using System.Net;
My question is, with below way of harvesting web, can the program running OS get infected with any possible way ?
The os is windows server 2008 r2 or windows 7 sp1
c# 4.5
Here the method i am using
I am just looking answer of any possible way of getting infected via any virus or any security vulnerability
I mean is below way 100% secure ?
using (System.Net.WebClient webClnt = new System.Net.WebClient())
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(srQueryRequest);
if (srProxyHost != "none")
{
webClnt.Proxy = proxy;
webClnt.Credentials = proxy.Credentials;
request.Proxy = proxy;
}
request.Timeout = irTimeOut * 1000;
using (WebResponse response = request.GetResponse())
{
using (Stream strumien = response.GetResponseStream())
{
using (StreamReader sr = new StreamReader(strumien))
{
string srResult = sr.ReadToEnd();
}
}
}
}
}
With regards to security, that depends what you do with the returned string. If it cointains javascript and you exectute it in a browser, you could in theory pick up something nasty.
That aside, the code is something of a mess.
WebClient ( a wrapper of webrequest)is not used, the above code could be condensed down to:
using (System.Net.WebClient webClnt = new System.Net.WebClient())
{
webClnt.proxy = proxy;
var srResult = webClient.DownloadString(srQueryRequest);
}
I want to connect to another server using network.
So I write below code.
var webRequest = WebRequest.Create(#"10.3.4.56");
using (var response = webRequest.GetResponse())
{
using (var rd = new StreamReader(response.GetResponseStream()))
{
var soapResult = rd.ReadToEnd();
}
}
But there is error and it says
Invalid URI: The format of the URI could not be determined.
How to solve it?
The string you pass in to WebRequest.Create needs to be a valid Uri. Try WebRequest.Create("http://10.3.4.56").
TIP! Use the static Uri.IsWellFormedUriString method to check if the URI string is valid.
try including the shema
"http://10.3.4.56"
Although i can grasp the concepts of the .Net framework and windows apps, i want to create an app that will involve me simulating website clicks and getting data/response times from that page. I have not had any experience with web yet as im only a junior, could someone explain to me (in english!!) the basic concepts or with examples, the different ways and classes that could help me communicate with a website?
what do you want to do?
send a request and grab the response in a String so you can process?
HttpWebRequest and HttpWebResponse will work
if you need to connect through TCP/IP, FTP or other than HTTP then you need to use a more generic method
WebRequest and WebResponse
All the 4 methods above are in System.Net Namespace
If you want to build a Service in the web side that you can consume, then today and in .NET please choose and work with WCF (RESTfull style).
hope it helps you finding your way :)
as an example using the HttpWebRequest and HttpWebResponse, maybe some code will help you understand better.
case: send a response to a URL and get the response, it's like clicking in the URL and grab all the HTML code that will be there after the click:
private void btnSendRequest_Click(object sender, EventArgs e)
{
textBox1.Text = "";
try
{
String queryString = "user=myUser&pwd=myPassword&tel=+123456798&msg=My message";
byte[] requestByte = Encoding.Default.GetBytes(queryString);
// build our request
WebRequest webRequest = WebRequest.Create("http://www.sendFreeSMS.com/");
webRequest.Method = "POST";
webRequest.ContentType = "application/xml";
webRequest.ContentLength = requestByte.Length;
// create our stram to send
Stream webDataStream = webRequest.GetRequestStream();
webDataStream.Write(requestByte, 0, requestByte.Length);
// get the response from our stream
WebResponse webResponse = webRequest.GetResponse();
webDataStream = webResponse.GetResponseStream();
// convert the result into a String
StreamReader webResponseSReader = new StreamReader(webDataStream);
String responseFromServer = webResponseSReader.ReadToEnd().Replace("\n", "").Replace("\t", "");
// close everything
webResponseSReader.Close();
webResponse.Close();
webDataStream.Close();
// You now have the HTML in the responseFromServer variable, use it :)
textBox1.Text = responseFromServer;
}
catch (Exception ex)
{
textBox1.Text = ex.Message;
}
}
The code does not work cause the URL is fictitious, but you get the idea. :)
You could use the System.Net.WebClient class of the .NET Framework. See the MSDN documentation here.
Simple example:
using System;
using System.Net;
using System.IO;
public class Test
{
public static void Main (string[] args)
{
if (args == null || args.Length == 0)
{
throw new ApplicationException ("Specify the URI of the resource to retrieve.");
}
WebClient client = new WebClient ();
// Add a user agent header in case the
// requested URI contains a query.
client.Headers.Add ("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
Stream data = client.OpenRead (args[0]);
StreamReader reader = new StreamReader (data);
string s = reader.ReadToEnd ();
Console.WriteLine (s);
data.Close ();
reader.Close ();
}
}
There are other useful methods of the WebClient, which allow developers to download and save resources from a specified URI.
The DownloadFile() method for example will download and save a resource to a local file. The UploadFile() method uploads and saves a resource to a specified URI.
UPDATE:
WebClient is simpler to use than WebRequest. Normally you could stick to using just WebClient unless you need to manipulate requests/responses in an advanced way. See this article where both are used: http://odetocode.com/Articles/162.aspx