private static void HandshakeCallback(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
SmtpConnection.ConnectAndHandshakeAsyncResult asyncState = (SmtpConnection.ConnectAndHandshakeAsyncResult)result.AsyncState;
try
{
try
{
LineInfo info = asyncState.connection.Reader.CurrentReader.EndReadLine(result);
if (info.StatusCode != SmtpStatusCode.ServiceReady)
{
asyncState.InvokeCallback(new SmtpException(info.StatusCode, info.Line, true));
}
else if (!asyncState.SendEHello())
{
}
}
catch (SmtpException)
{
if (!asyncState.SendHello())
{
}
}
}
catch (Exception exception)
{
asyncState.InvokeCallback(exception);
}
}
}
private static void AuthenticateContinueCallback(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
SmtpConnection.ConnectAndHandshakeAsyncResult asyncState = (SmtpConnection.ConnectAndHandshakeAsyncResult)result.AsyncState;
try
{
LineInfo info = AuthCommand.EndSend(result);
if (info.StatusCode == ((SmtpStatusCode)0xeb))
{
asyncState.connection.authenticationModules[asyncState.currentModule].CloseContext(asyncState.connection);
asyncState.connection.isConnected = true;
asyncState.InvokeCallback();
}
else
{
if (info.StatusCode == ((SmtpStatusCode)0x14e))
{
asyncState.authResponse = info.Line;
if (!asyncState.AuthenticateContinue())
{
return;
}
}
asyncState.Authenticate();
}
}
catch (Exception exception)
{
asyncState.InvokeCallback(exception);
}
}
}
private static void SendHelloCallback(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
SmtpConnection.ConnectAndHandshakeAsyncResult asyncState = (SmtpConnection.ConnectAndHandshakeAsyncResult)result.AsyncState;
try
{
HelloCommand.EndSend(result);
asyncState.Authenticate();
}
catch (Exception exception)
{
asyncState.InvokeCallback(exception);
}
}
}
private static void SendEHelloCallback(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
SmtpConnection.ConnectAndHandshakeAsyncResult asyncState = (SmtpConnection.ConnectAndHandshakeAsyncResult)result.AsyncState;
try
{
try
{
asyncState.connection.extensions = EHelloCommand.EndSend(result);
asyncState.connection.ParseExtensions(asyncState.connection.extensions);
if (asyncState.connection.pooledStream.NetworkStream is TlsStream)
{
asyncState.Authenticate();
return;
}
}
catch (SmtpException exception)
{
if ((exception.StatusCode != SmtpStatusCode.CommandUnrecognized) && (exception.StatusCode != SmtpStatusCode.CommandNotImplemented))
{
throw exception;
}
if (!asyncState.SendHello())
{
return;
}
}
if (asyncState.connection.EnableSsl)
{
if (!asyncState.connection.serverSupportsStartTls && !(asyncState.connection.pooledStream.NetworkStream is TlsStream))
{
throw new SmtpException(SR.GetString("MailServerDoesNotSupportStartTls"));
}
asyncState.SendStartTls();
}
else
{
asyncState.Authenticate();
}
}
catch (Exception exception2)
{
asyncState.InvokeCallback(exception2);
}
}
}
private static void ConnectionCreatedCallback(object request, object state)
{
SmtpConnection.ConnectAndHandshakeAsyncResult owningObject = (SmtpConnection.ConnectAndHandshakeAsyncResult)request;
if (state is Exception)
{
owningObject.InvokeCallback((Exception)state);
}
else
{
SmtpPooledStream pooledStream = (SmtpPooledStream)((PooledStream)state);
try
{
while ((pooledStream.creds != null) && (pooledStream.creds != owningObject.connection.credentials))
{
owningObject.connection.connectionPool.PutConnection(pooledStream, pooledStream.Owner, owningObject.connection.Timeout, false);
pooledStream = (SmtpPooledStream)owningObject.connection.connectionPool.GetConnection(owningObject, m_ConnectionCreatedCallback, owningObject.connection.Timeout);
if (pooledStream == null)
{
return;
}
}
if (Logging.On)
{
Logging.Associate(Logging.Web, owningObject.connection, pooledStream);
}
pooledStream.Owner = owningObject.connection;
pooledStream.creds = owningObject.connection.credentials;
lock (owningObject.connection)
{
if (owningObject.connection.isClosed)
{
owningObject.connection.connectionPool.PutConnection(pooledStream, pooledStream.Owner, owningObject.connection.Timeout, false);
owningObject.InvokeCallback(null);
return;
}
owningObject.connection.pooledStream = pooledStream;
}
owningObject.Handshake();
}
catch (Exception exception)
{
owningObject.InvokeCallback(exception);
}
}
}
private static void SendStartTlsCallback(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
SmtpConnection.ConnectAndHandshakeAsyncResult asyncState = (SmtpConnection.ConnectAndHandshakeAsyncResult)result.AsyncState;
try
{
StartTlsCommand.EndSend(result);
TlsStream stream = new TlsStream(asyncState.connection.pooledStream.ServicePoint.Host, asyncState.connection.pooledStream.NetworkStream, asyncState.connection.ClientCertificates, asyncState.connection.pooledStream.ServicePoint, asyncState.connection.client, asyncState.m_OuterResult.ContextCopy);
asyncState.connection.pooledStream.NetworkStream = stream;
asyncState.connection.responseReader = new SmtpReplyReaderFactory(asyncState.connection.pooledStream.NetworkStream);
asyncState.SendEHello();
}
catch (Exception exception)
{
asyncState.InvokeCallback(exception);
}
}
}
