C＃类具有登录/注销复杂性。 [英] C# Class has login / logout complications.
本文介绍了C＃类具有登录/注销复杂性。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
首次登录和注销效果很好，但是一旦我尝试再次登录，它就声称操作已经超时。你可以建议我进行故障排除和解决吗？
使用系统;
使用 System.Collections.Generic;
使用 System.Linq;
使用 System.Text;
使用 System.Threading.Tasks;
使用 System.IO;
使用 System.Net;
使用 System.Web;
使用 System.Windows.Forms;
命名空间 Neopets.classes.communications
{
public delegate void OnCriticalError（ object source，CriticalError e）;
public class CriticalError：EventArgs
{
private string 消息;
public CriticalError（ string message）
{
此 .message = message;
}
public string 消息（）
{
返回 此 .message;
}
}
class 认证
{
public event OnCriticalError AuthCriticalError;
CookieContainer cookies = new CookieContainer（）;
private bool is_Loggedin（）
{
return RequestPage（ http：//www.neopets。 com / index.phtml， Mozilla / 5.0（Windows NT 6.3; WOW64; rv：34.0） Gecko / 20100101 Firefox / 34.0， ）。包含（ Logout）;
}
private void AquireCookies（ string url）
{
HttpWebRequest request = null ;
HttpWebResponse response = null ;
request =（HttpWebRequest）WebRequest.Create（ new Uri（url））;
request.Method = GET;
request.CookieContainer = cookies;
try
{
response =（HttpWebResponse）request.GetResponse（）;
}
catch （WebException e）
{
AuthCriticalError（ this ， new CriticalError（e.Message））;
}
}
private string RequestPage（ string uri， string UserAgent， string Refer ）
{
HttpWebRequest request = null ;
HttpWebResponse response = null ;
// 用于构建整个输入
StringBuilder sb = new StringBuilder（）;
// 用于每次读取操作
byte [] buf = new byte [ 8192 ];
// 准备我们要求的网页
request =（HttpWebRequest）WebRequest.Create（uri）;
request.UserAgent = UserAgent;
request.Referer = Refer;
request.CookieContainer = cookies;
// 执行请求
< span class =code-keyword> try
{
response =（HttpWebResponse）request.GetResponse（）;
// 我们将通过响应流读取数据
Stream resStream = response.GetResponseStream（）;
string tempString = null ;
int count = 0 ;
执行
{
// 用数据填充缓冲区
count = resStream.Read（buf， 0 ，buf.Length）;
// 确保我们读取一些数据
if （count！= 0 ）
{
// 从字节转换为ASCII文本
tempString = Encoding.ASCII.GetString（buf， 0 ，伯爵）;
// 继续构建字符串
sb.Append（ tempString）;
}
}
while （count > 0 ）; // 还有更多要阅读的数据吗？
// 打印页面来源
return （sb。的ToString（））;
}
catch （WebException e）
{
AuthCriticalError（ this ， new CriticalError（e.Message））;
return e.Message;
}
}
私人 字符串 PostForm（ StringBuilder postData， string uri， string UserAgent， string Referer， string ContentType = application / x- www-form-urlencoded， bool AllowAutoRedirect = true ， bool KeepAlive = true ）
{
HttpWebRequest request = 空;
HttpWebResponse response = null ;
AquireCookies（uri）;
request =（HttpWebRequest）WebRequest.Create（ new Uri（uri））;
request.ContentType = ContentType;
request.UserAgent = UserAgent;
request.Referer = Referer;
request.AllowAutoRedirect = AllowAutoRedirect;
request.KeepAlive = KeepAlive;
request.CookieContainer = cookies;
request.Method = POST;
// 将POST数据写入流
< span class =code-keyword>尝试
{
使用（StreamWriter writer = new StreamWriter（request.GetRequestStream（）））
{
writer.Write（postData.ToString（））;
}
response =（HttpWebResponse）request.GetResponse（）;
使用（StreamReader reader = new StreamReader（response.GetResponseStream（）） ）
{
return reader.ReadToEnd（）;
}
}
catch （WebException e）
{
AuthCriticalError（ this ， new CriticalError（e.Message））;
return e.Message;
}
}
public int 登录（字符串用户名，字符串密码）
{
if （is_Loggedin（）== false ）
{
StringBuilder PostData = new StringBuilder（）;
PostData.Append（ destination =％252Findex.phtml）;
PostData.Append（ & username = + HttpUtility.UrlEncode（username）） ;
PostData.Append（ & password = + HttpUtility.UrlEncode（password）） ;
string returnData = PostForm（PostData， http://www.neopets.com/login.phtml， Mozilla / 5.0（Windows NT 6.3; WOW64; rv：34.0）Gecko / 20100101 Firefox / 34.0， http ：//www.neopets.com， application / x-www-form-urlencoded， true ， true ）;
if （returnData.Contains（ cookie中的用户名不正确。））
{
return 1 ;
}
if （returnData.Contains（ 抱歉，我们没有找到具有该用户名的帐户）|| returnData.Contains（ 找不到用户名！请返回并重新输入您的用户名。）|| returnData.Contains（ 抱歉，您的用户名中包含无效字符。））
{
return < span class =code-digit> 2 ;
}
if （returnData.Contains（ 密码无效。请输入正确的密码才能继续。））
{
return 3 ;
}
if （returnData.Contains（ 退出））
{
return 0 ;
}
return 4 ;
}
其他
{
返回 0 ;
}
}
public void 退出（ ）
{
if （is_Loggedin（）== true ）
{
RequestPage（ http://www.neopets.com/logout.phtml， Mozilla / 5.0（Windows NT 6.3; WOW64; rv：34.0）Gecko / 20100101 Firefox / 34.0， ）;
}
if （is_Loggedin（）== false ）
{
MessageBox.Show（ 您已注销）;
}
}
}
}
解决方案
我有原版现在修复并处理了最后一课，问题与我没有在请求页面功能中指定相应的标题有关。
谢谢:)
The first login and logout works well, however once I try to login again it claims that an operation has timed out. can you advice me into troubleshooting and fixing this?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Net;
using System.Web;
using System.Windows.Forms;
namespace Neopets.classes.communications
{
public delegate void OnCriticalError(object source, CriticalError e);
public class CriticalError : EventArgs
{
private string message;
public CriticalError(string message)
{
this.message = message;
}
public string Message()
{
return this.message;
}
}
class Authentication
{
public event OnCriticalError AuthCriticalError;
CookieContainer cookies = new CookieContainer();
private bool is_Loggedin()
{
return RequestPage("http://www.neopets.com/index.phtml", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0", "").Contains("Logout");
}
private void AquireCookies(string url)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
request = (HttpWebRequest)WebRequest.Create(new Uri(url));
request.Method = "GET";
request.CookieContainer = cookies;
try
{
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException e)
{
AuthCriticalError(this, new CriticalError(e.Message));
}
}
private string RequestPage(string uri, string UserAgent, string Refer)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
// used to build entire input
StringBuilder sb = new StringBuilder();
// used on each read operation
byte[] buf = new byte[8192];
// prepare the web page we will be asking for
request = (HttpWebRequest)WebRequest.Create(uri);
request.UserAgent = UserAgent;
request.Referer = Refer;
request.CookieContainer = cookies;
// execute the request
try
{
response = (HttpWebResponse)request.GetResponse();
// we will read data via the response stream
Stream resStream = response.GetResponseStream();
string tempString = null;
int count = 0;
do
{
// fill the buffer with data
count = resStream.Read(buf, 0, buf.Length);
// make sure we read some data
if (count != 0)
{
// translate from bytes to ASCII text
tempString = Encoding.ASCII.GetString(buf, 0, count);
// continue building the string
sb.Append(tempString);
}
}
while (count > 0); // any more data to read?
// print out page source
return (sb.ToString());
}
catch (WebException e)
{
AuthCriticalError(this, new CriticalError(e.Message));
return e.Message;
}
}
private string PostForm(StringBuilder postData, string uri, string UserAgent, string Referer, string ContentType = "application/x-www-form-urlencoded", bool AllowAutoRedirect = true, bool KeepAlive = true)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
AquireCookies(uri);
request = (HttpWebRequest)WebRequest.Create(new Uri(uri));
request.ContentType = ContentType;
request.UserAgent = UserAgent;
request.Referer = Referer;
request.AllowAutoRedirect = AllowAutoRedirect;
request.KeepAlive = KeepAlive;
request.CookieContainer = cookies;
request.Method = "POST";
//write the POST data to the stream
try
{
using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
{
writer.Write(postData.ToString());
}
response = (HttpWebResponse)request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
return reader.ReadToEnd();
}
}
catch(WebException e)
{
AuthCriticalError(this, new CriticalError(e.Message));
return e.Message;
}
}
public int Login(string username, string password)
{
if (is_Loggedin() == false)
{
StringBuilder PostData = new StringBuilder();
PostData.Append("destination=%252Findex.phtml");
PostData.Append("&username=" + HttpUtility.UrlEncode(username));
PostData.Append("&password=" + HttpUtility.UrlEncode(password));
string returnData = PostForm(PostData, "http://www.neopets.com/login.phtml", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0", "http://www.neopets.com", "application/x-www-form-urlencoded", true, true);
if (returnData.Contains("Incorrect username in cookie."))
{
return 1;
}
if (returnData.Contains("Sorry, we did not find an account with that username") || returnData.Contains("No username found! Please go back and re-enter your username.") || returnData.Contains("Sorry, but you have invalid characters in your username."))
{
return 2;
}
if (returnData.Contains("Invalid Password. Please enter the correct password to continue."))
{
return 3;
}
if (returnData.Contains("Logout"))
{
return 0;
}
return 4;
}
else
{
return 0;
}
}
public void Logout()
{
if (is_Loggedin() == true)
{
RequestPage("http://www.neopets.com/logout.phtml", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0", "");
}
if (is_Loggedin() == false)
{
MessageBox.Show("You Have Logged Out");
}
}
}
} 解决方案
I've got the original fixed and working on the final class now, the issue was related to the fact that I didn't specify the appropriate headers in the requestpage function.
Thanks Though :)
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