我正在使用POP3代码接收来自邮件服务器的邮件它在GMail和雅虎上运行良好，但是当我尝试连接hotmail时出现错误
string response = SendCommand（“STAT”）;
“ - 现在不期望ERR命令\ r \ n” 我附上邮件代码请查看并建议我可能的解决方案。
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Xml;
namespace CallScreen24x7.BAL
{
public class Pop3Client : IDisposable
{
//string _host,_email,_pass;
//int port;
// string _host = ConfigurationSettings.AppSettings["host"];
public string Host { get; protected set; }
public int Port { get; protected set; }
public string Email { get; protected set; }
public string Password { get; protected set; }
public bool IsSecure { get; protected set; }
public TcpClient Client { get; protected set; }
public Stream ClientStream { get; protected set; }
public StreamWriter Writer { get; protected set; }
public StreamReader Reader { get; protected set; }
private bool disposed = false;
//public Pop3Client(string host, int port, string email, string password) : this("mail.ansitdev.com", 110, "dev@ansitdev.com", "P@ssword123", false) { }
public Pop3Client(string host, int port, string email, string password, bool secure)
{
try
{
Host = host;// ConfigurationSettings.AppSettings["host"];// "mail.ansitdev.com";
Port = port;
Email = email;// "dev@ansitdev.com";
Password = password;// ;
IsSecure = true;
}
catch (Exception ex)
{ }
}
public void Connect()
{
try
{
if (Client == null)
Client = new TcpClient();
if (!Client.Connected)
Client.Connect(Host, Port);
if (IsSecure)
{
SslStream secureStream = new SslStream(Client.GetStream());
secureStream.AuthenticateAsClient(Host);
ClientStream = secureStream;
secureStream = null;
}
else
ClientStream = Client.GetStream();
Writer = new StreamWriter(ClientStream);
Reader = new StreamReader(ClientStream);
ReadLine();
Login();
}
catch(Exception ex)
{}
}
public int GetEmailCount()
{
int count = 0;
string response = SendCommand("STAT");
if (IsResponseOk(response))
{
string[] arr = response.Substring(4).Split(' ');
count = Convert.ToInt32(arr[0]);
}
else
count = -1;
return count;
}
public Email FetchEmail(int emailId)
{
if (IsResponseOk(SendCommand("TOP " + emailId + " 0")))
return new Email(ReadLines());
else
return null;
}
public List<Email> FetchEmailList(int start, int count)
{
List<Email> emails = new List<Email>(count);
for (int i = start; i >=(start-count)+1; i--)
{
if (i >= 0)
{
Email email = FetchEmail(i);
if (email != null)
emails.Add(email);
}
}
return emails;
}
public List<MessagePart> FetchMessageParts(int emailId)
{
if (IsResponseOk(SendCommand("RETR " + emailId)))
return Util.ParseMessageParts(ReadLines());
return null;
}
public void Close()
{
try
{
if (Client != null)
{
if (Client.Connected)
Logout();
Client.Close();
Client = null;
}
if (ClientStream != null)
{
ClientStream.Close();
ClientStream = null;
}
if (Writer != null)
{
Writer.Close();
Writer = null;
}
if (Reader != null)
{
Reader.Close();
Reader = null;
}
disposed = true;
}
catch (Exception ex)
{ }
}
public void Dispose()
{
try
{
if (!disposed)
Close();
}
catch (Exception ex)
{ }
}
protected void Login()
{
try
{
if (!IsResponseOk(SendCommand("USER " + Email)) || !IsResponseOk(SendCommand("PASS " + Password))) { }
// throw new Exception("User/password not accepted");
}
catch (Exception ex)
{ }
}
protected void Logout()
{
SendCommand("RSET");
}
protected string SendCommand(string cmdtext)
{
try
{
Writer.WriteLine(cmdtext);
Writer.Flush();
return ReadLine();
}
catch (Exception ex) { return null; }
}
protected string ReadLine()
{
return Reader.ReadLine() + "\r\n";
}
protected string ReadLines()
{
StringBuilder b = new StringBuilder();
while (true)
{
string temp = ReadLine();
if (temp == ".\r\n" || temp.IndexOf("-ERR") != -1)
break;
b.Append(temp);
}
return b.ToString();
}
protected static bool IsResponseOk(string response)
{
if (response.StartsWith("+OK"))
return true;
if (response.StartsWith("-ERR"))
return false;
return true;
// throw new Exception("Cannot understand server response: " + response);
}
}
public class Email
{
public NameValueCollection Headers { get; protected set; }
public string ContentType { get; protected set; }
public DateTime UtcDateTime { get; protected set; }
public string From { get; protected set; }
public string To { get; protected set; }
public string Subject { get; protected set; }
public Email(string emailText)
{
Headers = Util.ParseHeaders(emailText);
ContentType = Headers["Content-Type"];
From = Headers["From"];
To = Headers["To"];
Subject = Headers["Subject"];
if (Headers["Date"] != null)
try
{
UtcDateTime = Util.ConvertStrToUtcDateTime(Headers["Date"]);
}
catch (FormatException)
{
UtcDateTime = DateTime.MinValue;
}
else
UtcDateTime = DateTime.MinValue;
}
}
public class MessagePart
{
public NameValueCollection Headers { get; protected set; }
public string ContentType { get; protected set; }
public string MessageText { get; protected set; }
public MessagePart(NameValueCollection headers, string messageText)
{
Headers = headers;
ContentType = Headers["Content-Type"];
MessageText = messageText;
}
}
public class Util
{
protected static Regex BoundaryRegex = new Regex("Content-Type: multipart(?:/\\S+;)" + "\\s+[^\r\n]*boundary=\"?(?<boundary>" + "[^\"\r\n]+)\"?\r\n", RegexOptions.IgnoreCase | RegexOptions.Compiled);
protected static Regex UtcDateTimeRegex = new Regex(@"^(?:\w+,\s+)?(?<day>\d+)\s+(?<month>\w+)\s+(?<year>\d+)\s+(?<hour>\d{1,2})" + @":(?<minute>\d{1,2}):(?<second>\d{1,2})\s+(?<offsetsign>\-|\+)(?<offsethours>" + @"\d{2,2})(?<offsetminutes>\d{2,2})(?:.*)$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
public static NameValueCollection ParseHeaders(string headerText)
{
NameValueCollection headers = new NameValueCollection();
StringReader reader = new StringReader(headerText);
string line;
string headerName = null, headerValue;
int colonIndx;
while ((line = reader.ReadLine()) != null)
{
if (line == "")
break;
if (Char.IsLetterOrDigit(line[0]) && (colonIndx = line.IndexOf(':')) != -1)
{
headerName = line.Substring(0, colonIndx);
headerValue = line.Substring(colonIndx + 1).Trim();
headers.Add(headerName, headerValue);
}
else if (headerName != null)
headers[headerName] += " " + line.Trim();
else
throw new FormatException("Could not parse headers");
}
return headers;
}
public static List<MessagePart> ParseMessageParts(string emailText)
{
List<MessagePart> messageParts = new List<MessagePart>();
int newLinesIndx = emailText.IndexOf("\r\n\r\n");
Match m = BoundaryRegex.Match(emailText);
if (m.Index < emailText.IndexOf("\r\n\r\n") && m.Success)
{
string boundary = m.Groups["boundary"].Value;
string startingBoundary = "\r\n--" + boundary;
int startingBoundaryIndx = -1;
while (true)
{
if (startingBoundaryIndx == -1)
startingBoundaryIndx = emailText.IndexOf(startingBoundary);
if (startingBoundaryIndx != -1)
{
int nextBoundaryIndx = emailText.IndexOf(startingBoundary, startingBoundaryIndx + startingBoundary.Length);
if (nextBoundaryIndx != -1 && nextBoundaryIndx != startingBoundaryIndx)
{
string multipartMsg = emailText.Substring(startingBoundaryIndx + startingBoundary.Length, (nextBoundaryIndx - startingBoundaryIndx - startingBoundary.Length));
int headersIndx = multipartMsg.IndexOf("\r\n\r\n");
if (headersIndx == -1)
throw new FormatException("Incompatible multipart message format");
string bodyText = multipartMsg.Substring(headersIndx).Trim();
NameValueCollection headers = Util.ParseHeaders(multipartMsg.Trim());
messageParts.Add(new MessagePart(headers, bodyText));
}
else
break;
startingBoundaryIndx = nextBoundaryIndx;
}
else
break;
}
if (newLinesIndx != -1)
{
string emailBodyText = emailText.Substring(newLinesIndx + 1);
}
}
else
{
int headersIndx = emailText.IndexOf("\r\n\r\n");
if (headersIndx == -1)
throw new FormatException("Incompatible multipart message format");
string bodyText = emailText.Substring(headersIndx).Trim();
NameValueCollection headers = Util.ParseHeaders(emailText);
messageParts.Add(new MessagePart(headers, bodyText));
}
return messageParts;
}
public static DateTime ConvertStrToUtcDateTime(string str)
{
Match m = UtcDateTimeRegex.Match(str);
int day, month, year, hour, min, sec;
if (m.Success)
{
day = Convert.ToInt32(m.Groups["day"].Value);
year = Convert.ToInt32(m.Groups["year"].Value);
hour = Convert.ToInt32(m.Groups["hour"].Value);
min = Convert.ToInt32(m.Groups["minute"].Value);
sec = Convert.ToInt32(m.Groups["second"].Value);
switch (m.Groups["month"].Value)
{
case "Jan":
month = 1;
break;
case "Feb":
month = 2;
break;
case "Mar":
month = 3;
break;
case "Apr":
month = 4;
break;
case "May":
month = 5;
break;
case "Jun":
month = 6;
break;
case "Jul":
month = 7;
break;
case "Aug":
month = 8;
break;
case "Sep":
month = 9;
break;
case "Oct":
month = 10;
break;
case "Nov":
month = 11;
break;
case "Dec":
month = 12;
break;
default:
throw new FormatException("Unknown month.");
}
DateTime dt = new DateTime(year, month, day, hour, min, sec);
DateTime kt = dt.AddHours(-offsetHours);
kt = kt.AddMinutes(-offsetMinutes);
return kt;
}
throw new FormatException("Incompatible date/time string format");
}
}
}
and
int page = 1;
if (Request.QueryString["page"] == null)
{
Response.Redirect("DashBoard.aspx?page=1");
Response.Flush();
Response.End();
}
else
page = Convert.ToInt32(Request.QueryString["page"]);
try
{
Email = ConfigurationSettings.AppSettings["email"].ToString();
Password = ConfigurationSettings.AppSettings["pass"].ToString();
}
catch (Exception ex)
{
Response.Redirect("DashBoard.aspx");
objentityException.ExceptionDescription = ex.Message + " " + ex.StackTrace; ;
objentityException.MethodName = "Page_Load";
objentityException.CreatedBy = Session["UserName"].ToString();
objException.InsertException(objentityException);
}
int totalEmails;
List<Email> emails;
string emailAddress;
using (Pop3Client client = new Pop3Client(Host, Port, Email, Password, false))
{
emailAddress = client.Email;
client.Connect();
totalEmails = client.GetEmailCount();
emails = client.FetchEmailList((totalEmails - ((page - 1) * 5)), NoOfEmailsPerPage);
}
int totalPages;
int mod = totalEmails % NoOfEmailsPerPage;
if (mod == 0)
totalPages = totalEmails / NoOfEmailsPerPage;
else
totalPages = ((totalEmails - mod) / NoOfEmailsPerPage) + 1;
for (int i = 0; i < emails.Count; i++)
{
AdminTransaction AT = new AdminTransaction();
DAL.Emails objEmail = new DAL.Emails();
Email email = emails[i];
int emailId = ((totalEmails - ((page - 1) * 5) - i));
TableCell noCell = new TableCell();
noCell.CssClass = "emails-table-cell";
noCell.Text = Convert.ToString(emailId);
objEmail.EmailNo = emailId;
TableCell fromCell = new TableCell();
fromCell.Text = email.From;
TableCell subjectCell = new TableCell();
subjectCell.Style["width"] = "300px";
subjectCell.Text = String.Format(DisplayEmailLink, emailId, page, email.Subject);
TableCell dateCell = new TableCell();
if (email.UtcDateTime != DateTime.MinValue)
dateCell.Text = email.UtcDateTime.ToString();
int x = AT.AddEmail(objEmail);
DataSet ds = AT.GetMailStatus(emailId);
if (ds.Tables[0].Rows.Count > 0)
{
// subjectCell.ForeColor = System.Drawing.Color.Red;
subjectCell.CssClass = "emails-table-cell";
fromCell.CssClass = "emails-table-cell";
dateCell.CssClass = "emails-table-cell";
}
else
{
subjectCell.CssClass = "emails-table-cellRead";
fromCell.CssClass = "emails-table-cellRead";
dateCell.CssClass = "emails-table-cellRead";
}
TableRow emailRow = new TableRow();
// emailRow.Cells.Add(noCell);
emailRow.Cells.Add(fromCell);
emailRow.Cells.Add(subjectCell);
emailRow.Cells.Add(dateCell);
//EmailsTable.Rows.Add(emailRow);
EmailsTable.Rows.AddAt(2 + i, emailRow);
}
if (totalPages > 1)
{
if (page > 1)
PreviousPageLiteral.Text = String.Format(SelfLink, page - 1, "Previous Page");
if (page > 0 && page < totalPages)
NextPageLiteral.Text = String.Format(SelfLink, page + 1, "Next Page");
}
EmailFromLiteral.Text = Convert.ToString(((page - 1) * NoOfEmailsPerPage) + 1);
EmailToLiteral.Text = Convert.ToString(page * NoOfEmailsPerPage);
EmailTotalLiteral.Text = Convert.ToString(totalEmails);
EmailLiteral.Text = emailAddress;
}