Develop Reference

Web Response 'an error occured while sending this request' while trying to login into Rockstar social club page

I want to login to Rockstar Social Club page https://pl.socialclub.rockstargames.com
I have this script
public static void Login()
{
string firstUrl = "https://pl.socialclub.rockstargames.com/profile/signin";
string formParams = string.Format("login-field={0}&password-field={1}", "mynickname", "mypassword");
string cookieHeader;
WebRequest req = WebRequest.Create(firstUrl);
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);
}
WebResponse resp = req.GetResponse();
cookieHeader = resp.Headers["Set-cookie"];
string pageSource;
string getUrl = "https://pl.socialclub.rockstargames.com/games/gtav/pc/career/overview/gtaonline";
WebRequest getRequest = WebRequest.Create(getUrl);
getRequest.Headers.Add("Cookie", cookieHeader);
WebResponse getResponse = getRequest.GetResponse(); //Here returns me this error: System.Net.WebException: 'An error occurred while sending the request"
using (StreamReader sr = new StreamReader(getResponse.GetResponseStream()))
{
pageSource = sr.ReadToEnd();
}
}
Error occures in WebResponse getResponse = getRequest.GetResponse();
System.Net.WebException: 'An error occurred while sending the request'
I don't know how to repair this, and succesfully login to this website.

I have accomplished what you are attempting to do, but on a different website.
Basically - a few years ago, I wanted to create a website that would track my Guild/Company details on Final Fantasy XIV.
They didn't have an API, so I made one.
In order to get the information I required, I needed to use a mix of HtmlAgilityPack along with the C# WebBrowser control.
In order to pass the verification token stage above, you need to run the page source in a Web Browser control.
This will allow dynamic fields and data to be generated.
You then need to take that data, and submit it with your post data.
This is to fool it into thinking the request is coming from the page.
Be warned, when doing your posts - you may need to allow for redirects and you may need to mirror the referrer and host fields to match the website you are emulating.
The specific process I followed was:
Navigate to login page in WebBrowser control
Get page source
Load into HtmlAgilityPack HtmlDocument class
Use XPath to scrape the login form.
Take _verification tokens, csrf tokens etc make note of them.
Post a web-request with the necessary data to the form target destination url.
Read the response
Be aware - sometimes the response will actually be html code that tells it to do a Javascript redirect - in my case with Final Fantasy XIV - it was loading up another form and performing an autopost on page load.
You will also want to use
LoggedInCookies = new CookieContainer();
In your first HttpWebRequest
followed by:
request.CookieContainer = LoggedInCookies;
for each subsequent request.
The cookie container will trap and persist the authentication related cookies, while the WebBrowser control and HtmlAgilityPack will allow you to scrape the fields from the web forms that you need to break through.
Adding some code from wayback when I solved this for Final Fantasy XIV's lodestone website.
This code is very old and may not work anymore, but the process it follows could be adapted for sites that do not use Javascript as part of the login process.
Pay attention to the areas where it allows the request to be redirected, this is because the Server endpoint you are calling may do Action redirects etc
If your request does not allow those redirects, then it will not be emulating the login process.
class LoggedInClient
{
public static CookieContainer LoginCookie(string user, string pass)
{
string sStored = "";
string url = "http://eu.finalfantasyxiv.com/lodestone/account/login/";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
CookieContainer cookies = new CookieContainer();
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36";
request.CookieContainer = cookies;
HttpWebResponse response1 = (HttpWebResponse)request.GetResponse();
Console.WriteLine(cookies.Count.ToString());
string sPage = "";
using (var vPage = new StreamReader(response1.GetResponseStream()))
{
sPage = vPage.ReadToEnd();
}
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(sPage);
sStored = doc.DocumentNode.SelectSingleNode("//input[#type='hidden' and #name='_STORED_']").Attributes["value"].Value;
string param = "sqexid="+user+"8&password="+pass+"&_STORED_=" + sStored;
string postURL = doc.DocumentNode.SelectSingleNode("//form[#name='mainForm']").Attributes["action"].Value;
//Console.WriteLine(sStored);
postURL = "https://secure.square-enix.com/oauth/oa/" + postURL;
request.Method = "POST";
byte[] paramAsBytes = Encoding.Default.GetBytes(param);
request = (HttpWebRequest)WebRequest.Create(postURL);
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36";
request.CookieContainer = cookies;
request.AllowAutoRedirect = false;
try
{
using (Stream stream = request.GetRequestStream())
{
stream.Write(paramAsBytes, 0, paramAsBytes.Length);
}
}
catch (Exception ee)
{
Console.WriteLine(ee.ToString());
}
string sGETPage = "";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (var vPage = new StreamReader(response.GetResponseStream()))
{
sPage = vPage.ReadToEnd();
sGETPage = response.Headers["Location"];
}
}
// Console.WriteLine(sPage);
request = (HttpWebRequest)WebRequest.Create(sGETPage);
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36";
request.CookieContainer = cookies;
HttpWebResponse response2 = (HttpWebResponse)request.GetResponse();
Console.WriteLine(cookies.Count.ToString());
sPage = "";
using (var vPage = new StreamReader(response2.GetResponseStream()))
{
sPage = vPage.ReadToEnd();
}
// Console.WriteLine(sPage);
doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(sPage);
string _c = doc.DocumentNode.SelectSingleNode("//input[#type='hidden' and #name='_c']").Attributes["value"].Value;
string cis_sessid = doc.DocumentNode.SelectSingleNode("//input[#type='hidden' and #name='cis_sessid']").Attributes["value"].Value;
string action = doc.DocumentNode.SelectSingleNode("//form[#name='mainForm']").Attributes["action"].Value;
string sParams = "_c=" + _c + "&cis_sessid=" + cis_sessid;
byte[] bData = Encoding.Default.GetBytes(sParams);
// Console.WriteLine(sStored);
request = (HttpWebRequest)WebRequest.Create(action);
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36";
request.CookieContainer = cookies;
request.AllowAutoRedirect = true;
try
{
using (Stream stream = request.GetRequestStream())
{
stream.Write(bData, 0, bData.Length);
}
}
catch (Exception ee)
{
Console.WriteLine(ee.ToString());
}
string nextPage = "";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (var vPage = new StreamReader(response.GetResponseStream()))
{
nextPage = vPage.ReadToEnd();
}
}
// Console.WriteLine(nextPage);
doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(nextPage);
string csrf_token = doc.DocumentNode.SelectSingleNode("//input[#type='hidden' and #name='csrf_token']").Attributes["value"].Value;
string cicuid = "51624738";
string timestamp = Convert.ToInt32(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalSeconds).ToString() + "100";
action = "http://eu.finalfantasyxiv.com/lodestone/api/account/select_character/";
sParams = "csrf_token=" + csrf_token + "&cicuid=" + cicuid + "&timestamp=" + timestamp;
bData = Encoding.Default.GetBytes(sParams);
request = (HttpWebRequest)WebRequest.Create(action);
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36";
request.CookieContainer = cookies;
request.AllowAutoRedirect = true;
try
{
using (Stream stream = request.GetRequestStream())
{
stream.Write(bData, 0, bData.Length);
}
}
catch (Exception ee)
{
Console.WriteLine(ee.ToString());
}
nextPage = "";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (var vPage = new StreamReader(response.GetResponseStream()))
{
nextPage = vPage.ReadToEnd();
}
}
return cookies;
}
}

Cookie count difference between web request and c# request

I have a https website, when I access it via the browser and check the cookies (via firebug), it gives me 3 cookies. but when I make the request via c# code, the cookie count is 2. one of them is missing. Can someone help what is happening ?
public void Login(string url)
{
//Create request to URL.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create( url);
//Set request headers.
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.Headers.Set(HttpRequestHeader.AcceptLanguage, "en-US,en;q=0.5");
request.Headers.Set(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br");
request.ContentType = "application/x-www-form-urlencoded";
request.KeepAlive = true;
request.Headers.Add("Upgrade-Insecure-Requests", #"1");
//Set request method
request.Method = "POST";
request.ServicePoint.Expect100Continue = false;
// Set request body.
string body = #"";
byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(body);
request.ContentLength = postBytes.Length;
Stream stream = request.GetRequestStream();
stream.Write(postBytes, 0, postBytes.Length);
stream.Close();
CookieContainer cookieJar = new CookieContainer();
request.CookieContainer = cookieJar;
//Get response to request.
var response = (HttpWebResponse)request.GetResponse();
var xx = ReadResponse(response);
int cookieCount = cookieJar.Count;
var items = cookieJar.List();
fixCookies(response);
items = cookieJar.List();
}
private static void fixCookies(HttpWebResponse response)
{
for (int i = 0; i < response.Headers.Count; i++)
{
string name = response.Headers.GetKey(i);
if (name != "Set-Cookie")
continue;
string value = response.Headers.Get(i);
foreach (var singleCookie in value.Split(','))
{
//I get only two values here.
}
}
}

Can't get response from HttpWebRequest in C#

The error says:
"The remote server returned an error:
(http://www.tgv.com.my/movies/man-city-v-arsenal-HO00005174)
Forbidden"
below is my code:
string url = https://translate.google.com/translate_a/single?client=t&sl=en&tl=vi&hl=vi&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&dt=at&ie=UTF-8&oe=UTF-8&otf=1&srcrom=1&ssel=0&tsel=0&kc=5&tk=520987|10880&q=" + keyword;
var request = (HttpWebRequest)WebRequest.Create(url);
WebProxy proxy = (WebProxy)WebProxy.GetDefaultProxy();
if (proxy.Address != null)
{
proxy.Credentials = proxy.Credentials = new NetworkCredential("username", "pw");
WebRequest.DefaultWebProxy = new System.Net.WebProxy(proxy.Address, proxy.BypassProxyOnLocal, proxy.BypassList, proxy.Credentials);
}
request.Proxy = proxy;
var postData = "";
var data = Encoding.ASCII.GetBytes(postData);
request.Method = "POST";
request.ContentType = "text/html; charset=UTF-8";
request.ContentLength = data.Length;
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
using (var stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
return responseString;
Thanks!

Using your Url, it's not a POST request, it's a GET request and could be done like this:
string url = "https://translate.google.com/translate_a/single?client=t&sl=de&tl=en&hl=de&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&otf=2&ssel=0&tsel=0&kc=4&tk=767774.885916&q=hallo%20du";
var request = (HttpWebRequest)WebRequest.Create(url);
var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
But if your q should have another value, other values must be changed too, otherwise you will have the Error 403 whitch tells you, that you do not have permission to do your request.
Using Google Translate, consider having a look at the Google Translate API.
There you can do your request like that:
https://www.googleapis.com/language/translate/v2?key=YOUR_API_KEY&q=hello%20world&source=en&target=de
But this is a payd service...

c# webrequest json file missing element value

I'm trying to download this json file to read out some data:
http://ddragon.leagueoflegends.com/cdn/5.7.2/data/en_US/item.json
My problem is now that somehow always the values in the tags attribute is missing.
I already used different methods to retrieve them used different encodings but nothing helped. Also the content length is less than the one which I receive in the browser.
Below are some codes I already tried. As you can see I used the WebClient to download this as a string. Also tried to download it as a file, same result.
Used HttpWebRequest with all header attributes.
Used the HEAD method to receive the content length which is less than in the browser.
I also tried using the MemoryStream and the StreamReader to get the correct data. Nothing worked.
String url = "http://ddragon.leagueoflegends.com/cdn/" + version + "/data/en_US/item.json";
//String json = new WebClient().DownloadString(url);
String json = "";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36";
request.ContentType = "text/plain; charset=utf-8 ";
request.Accept = "*/*";
request.Method = "GET";
//Get the headers associated with the request.
WebHeaderCollection myWebHeaderCollection = request.Headers;
myWebHeaderCollection.Add("DNT", "1");
myWebHeaderCollection.Add("Accept-Encoding", "gzip, deflate, sdch");
myWebHeaderCollection.Add("Accept-Language", "de-DE,de;q=0.8,en-US;q=0.6,en;q=0.4");
HttpWebRequest requestHeader = ((HttpWebRequest) WebRequest.Create(url));
requestHeader.Method = "HEAD";
using (WebResponse resp = requestHeader.GetResponse())
{
Console.WriteLine(resp.ContentLength);
}
Stream responseStream;
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (responseStream = response.GetResponseStream())
{
if (responseStream != null)
{
Console.WriteLine(response.ContentLength);
Console.WriteLine(response.ContentType);
StreamReader readStream = null;
if (string.IsNullOrEmpty(response.CharacterSet))
{
readStream = new StreamReader(responseStream);
}
else
{
readStream = new StreamReader(responseStream, Encoding.GetEncoding(response.CharacterSet));
}
json = readStream.ReadToEnd();
readStream.Close();
//using (var memoryStream = new MemoryStream())
//{
// responseStream.CopyTo(memoryStream);
// json = Encoding.UTF8.GetString(memoryStream.ToArray());
//}
}
}
Edit:
Sample Outputs:
Browser: http://pastebin.com/nQBj64L0
C# Client: http://pastebin.com/7a0Gxvcg

Reading ajax response from Youtube in C#

I'm trying to post a comment on Youtube and get the xml response (so I can get the comment ID, or if I need to enter captcha or something), but I'm only able to post the comment. For some reason I am not able to read the xml response by using response.GetResponseStream(). When I try to output the response to the console, I get nothing. And, I've sniffed the requests and response my program sends and receives using Wireshark and I can see that the xml is in the response.
Here is the code I'm using to read the response:
using (HttpWebResponse response = MakeRequest(request, cookies, post))
{
using (var reader = new System.IO.StreamReader(response.GetResponseStream(), UTF8Encoding.UTF8))
{
string xml = reader.ReadToEnd();
Console.WriteLine(xml);
}
}
and the MakeRequest function
private static HttpWebResponse MakeRequest(HttpWebRequest request, CookieContainer SessionCookieContainer, Dictionary<string, string> parameters = null)
{
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5Accept: */*";
request.Accept = "text/html,text/xml,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.CookieContainer = SessionCookieContainer;
request.AllowAutoRedirect = false;
request.KeepAlive = true;
if (proxy != "") request.Proxy = myproxy;
if (parameters != null) request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
string postData = string.Empty;
if (parameters != null)
{
postData = getPostData(parameters);
byte[] postBuffer = UTF8Encoding.UTF8.GetBytes(postData);
using (Stream postStream = request.GetRequestStream())
{
postStream.Write(postBuffer, 0, postBuffer.Length);
}
}
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
SessionCookieContainer.Add(response.Cookies);
while (response.StatusCode == HttpStatusCode.Found)
{
response.Close();
request = GetNewRequest(response.Headers["Location"], SessionCookieContainer);
response = (HttpWebResponse)request.GetResponse();
SessionCookieContainer.Add(response.Cookies);
}
return response;
}
Any ideas on why this isn't working and how to solve this issue?

I think switching to HttpClient would solve the problem.