// --------------------------- ConnectAndLogin -----------------------------
public void ConnectAndLogin( )
{
// connect to the mail server.
mSockEx = new SocketExchange(
m_credential.Server,
Port,
Logger);
if (UseSecureConnection == true)
{
mSockEx.SecureConnect( );
}
else
{
mSockEx.Connect( );
}
SignalConnectedEvent(new MailEventArgs(MailEvent.Connected));
// receive initial connection response from mail server.
mSockEx.ExpectedResponseCodes = new ExpectedResponseCodes(PopConstants.Ok);
mSockEx.Receive( );
mSockEx.ThrowIfUnexpectedResponse( );
// send login details ...
MailServerLogin( );
}
// --------------------------- OpenInBox -----------------------------
public SocketExchange OpenInbox( )
{
// connect to the mail server.
SocketExchange sockEx = new SocketExchange(
m_credential.Server,
Port,
Logger);
if (UseSecureConnection == true)
{
sockEx.SecureConnect( );
mSecureSocket = sockEx.ConnectedSecureSocket;
}
else
{
sockEx.Connect( );
m_socket = sockEx.ConnectedSocket;
}
SignalConnectedEvent(new MailEventArgs(MailEvent.Connected));
// receive initial connection response from mail server.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(PopConstants.Ok);
sockEx.Receive( );
sockEx.ThrowIfUnexpectedResponse( );
// send login details ...
MailServerLogin(sockEx);
return(sockEx);
}
// ------------------------------ SendMail --------------------------------
public void SendMailOld(MailMessage msg)
{
SocketExchange sockEx = null;
// connect to the mail server.
sockEx = new SocketExchange(ServerName, Port, DetailLogger);
try
{
if (UseSecureConnection == true)
{
sockEx.SecureConnect( );
}
else
{
sockEx.Connect( );
}
SignalConnectedEvent(new MailEventArgs(MailEvent.Connected));
// receive the initial server hello message.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.ServerReady);
sockEx.Receive( );
sockEx.ThrowIfUnexpectedResponse( );
// hello message exchange.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.Ok);
if (ServerRequiresAuthentication == true)
{
sockEx.SendReceive("EHLO " + Dns.GetHostName() + SmtpConstants.CrLf);
}
else
{
sockEx.SendReceive("HELO " + Dns.GetHostName() + SmtpConstants.CrLf);
}
sockEx.ThrowIfUnexpectedResponse( );
// got a 250, but did not get a 250-AUTH. receive more.
if ((sockEx.ResponseCode == SmtpConstants.Ok) &&
(sockEx.ResponseMessageContains("AUTH") == false))
{
LogMessage(NetworkRole.Client, "AUTH not received. Receive more.");
sockEx.SleepThenReadMoreAvailableData(300);
}
// authentication loop
sockEx.ReadMoreDelay = 0;
if (ServerRequiresAuthentication == true)
{
int okCount = 0;
while (true)
{
sockEx.ExpectedResponseCodes =
new ExpectedResponseCodes(SmtpConstants.Ok, SmtpConstants.Challenge);
sockEx.SendReceive("AUTH LOGIN" + SmtpConstants.CrLf);
sockEx.ThrowIfUnexpectedResponse( );
if (sockEx.ResponseCode == SmtpConstants.Challenge)
{
AuthenticateToServer(sockEx);
break;
}
else if (sockEx.ResponseCode == SmtpConstants.Ok)
{
++okCount;
continue;
}
}
}
// send the MAIL FROM message to the server. This is the start of the sending
// of the email message.
sockEx.ExpectedResponseCodes =
new ExpectedResponseCodes(SmtpConstants.Challenge, SmtpConstants.Ok);
sockEx.SendReceive("MAIL FROM: <" + msg.From.Address + ">" + SmtpConstants.CrLf);
sockEx.ThrowIfUnexpectedResponse( );
if (sockEx.ResponseCode == SmtpConstants.Challenge)
{
AuthenticateToServer(sockEx);
}
// send "rcpt to" message to the mail server to validate the recipients.
ServerValidateRecipients(sockEx, msg.ToRecipients);
ServerValidateRecipients(sockEx, msg.CCRecipients);
ServerValidateRecipients(sockEx, msg.BCCRecipients);
// send the DATA message to the server.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.DataReady);
sockEx.SendReceive("DATA" + SmtpConstants.CrLf);
sockEx.ThrowIfUnexpectedResponse( );
// send the message itself.
SignalStartDataSendEvent(new MailEventArgs(MailEvent.StartDataSend));
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.Ok);
string dataMessage =
msg.ToString( ) + SmtpConstants.CrLf + "." + SmtpConstants.CrLf;
sockEx.SendReceive(dataMessage);
sockEx.ThrowIfUnexpectedResponse( );
SignalEndDataSendEvent(new MailEventArgs(MailEvent.EndDataSend));
// send quit message.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.Quit);
sockEx.SendReceive("QUIT" + SmtpConstants.CrLf);
sockEx.ThrowIfUnexpectedResponse( );
}
// close the connection.
finally
{
SignalDisconnectedEvent(new MailEventArgs(MailEvent.Disconnected));
sockEx.CloseConnection( );
}
}
/// <summary>
/// Connect and login to the smtp server.
/// </summary>
/// <returns></returns>
public SocketExchange Connect( )
{
// connect to the mail server.
SocketExchange sockEx = new SocketExchange(ServerName, Port, DetailLogger);
if (UseSecureConnection == true)
{
sockEx.SecureConnect( );
}
else
{
sockEx.Connect( );
}
SignalConnectedEvent(new MailEventArgs(MailEvent.Connected));
// receive the initial server hello message.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.ServerReady);
sockEx.Receive( );
sockEx.ThrowIfUnexpectedResponse( );
// hello message exchange.
sockEx.ExpectedResponseCodes = new ExpectedResponseCodes(SmtpConstants.Ok);
if (ServerRequiresAuthentication == true)
{
sockEx.SendReceive("EHLO " + Dns.GetHostName() + SmtpConstants.CrLf);
}
else
{
sockEx.SendReceive("HELO " + Dns.GetHostName() + SmtpConstants.CrLf);
}
sockEx.ThrowIfUnexpectedResponse( );
// got a 250, but did not get a 250-AUTH. receive more.
if ((sockEx.ResponseCode == SmtpConstants.Ok) &&
(sockEx.ResponseMessageContains("AUTH") == false))
{
LogMessage(NetworkRole.Client, "AUTH not received. Receive more.");
sockEx.SleepThenReadMoreAvailableData(300);
}
// authentication loop
sockEx.ReadMoreDelay = 0;
if (ServerRequiresAuthentication == true)
{
int okCount = 0;
while (true)
{
sockEx.ExpectedResponseCodes =
new ExpectedResponseCodes(SmtpConstants.Ok, SmtpConstants.Challenge);
sockEx.SendReceive("AUTH LOGIN" + SmtpConstants.CrLf);
sockEx.ThrowIfUnexpectedResponse( );
if (sockEx.ResponseCode == SmtpConstants.Challenge)
{
AuthenticateToServer(sockEx);
break;
}
else if (sockEx.ResponseCode == SmtpConstants.Ok)
{
++okCount;
continue;
}
}
}
return(sockEx);
}
