[英]C# - How to check if a user logged in into a web using HttpWebRequest
我已经使用HttpWebRequest编写了一个C#函数,该函数检查用户是否成功登录到Web以及登录该用户花了多少毫秒。问题是,即使我使用try and catch,当我输入错误时,用户名和密码仍然无法使用,我无法验证它是否成功。 如何检查用户是否成功登录?
private int[] LoginCheck(string TargetWebApp)
{
int[] result = new int[2];
var watch = System.Diagnostics.Stopwatch.StartNew();
try
{
string formUrl = "https://XXXXX.com/user/login/default"; // NOTE: This is the URL the form POSTs to, not the URL of the form (you can find this in the "action" attribute of the HTML's form tag
string formParams = string.Format("email_address={0}&password={1}", "XXXXX", "XXXXX");
string cookieHeader;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(formUrl);
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
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);
}
HttpWebResponse resp = req.GetResponse() as HttpWebResponse;;
var elapsedMs = watch.ElapsedMilliseconds;
watch.Stop();
Console.WriteLine("Login to WebApp succeed in {0} Milliseconds", elapsedMs);
cookieHeader = resp.Headers["Set-cookie"];
result[0] = 1;
result[1] = (int)elapsedMs;
}
catch (Exception e)
{
//Any exception will return false.
Console.WriteLine(e.Message);
result[0] = 0;
result[1] = 0;
}
return result;
}
您应该使用以下代码来获取响应的状态,responseCode 401用于未经授权的响应。
var isInvalidAccess = resp.StatusCode == HttpStatusCode.Unauthorized;
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