c# - 使用.NET SslStream的FTPS服务器

我正在用C#开发FTP服务器，我刚刚完成了使用SslStream类实现FTPS显式模式功能，一切正常。

我在使用fileZilla> 3.0.11作为客户端时遇到问题。我在Google arround上进行了搜索，看来sslstream实现无法正确关闭连接。 (不发送close_notify警报)。使用WinScp，SmartFTP和lftp都可以正常工作。

有任何想法或其他SSL库吗？

还是用某种方式对close_notify警报进行硬编码并发送？

具体的代码示例会很棒!

创建sslStream:

_sslStream = new SslStream(socket.GetStream());
var _cert = new X509Certificate2(certPath,pass);
_sslStream.AuthenticateAsServer(_cert);

关闭连接:

_sslStream.Close();
socket.Close();
_sslStream = null;
socket = null;

FileZilla 3.6.0.2错误日志:

Response:   150 Opening data connection for LIST
Trace:  CFtpControlSocket::TransferParseResponse()
Trace:    code = 1
Trace:    state = 4
Trace:  CFtpControlSocket::SendNextCommand()
Trace:  CFtpControlSocket::TransferSend()
Trace:    state = 5
Trace:  CTlsSocket::OnRead()
Trace:  CTlsSocket::ContinueHandshake()
Trace:  TLS Handshake successful
Trace:  TLS Session resumed
Trace:  Cipher: AES-128-CBC, MAC: SHA1
Trace:  CTransferSocket::OnConnect
Trace:  CTransferSocket::OnReceive(), m_transferMode=0
Trace:  CTlsSocket::Failure(-110, 0)
Error:  GnuTLS error -110 in gnutls_record_recv: The TLS connection was non-properly terminated.
Error:  Could not read from transfer socket: ECONNABORTED - Connection aborted
Trace:  CTransferSocket::TransferEnd(3)
Trace:  CFtpControlSocket::TransferEnd()
Trace:  CTlsSocket::OnRead()
Trace:  CFtpControlSocket::OnReceive()
Response:   226 LIST successful.

最佳答案

我认为，您确实有理由重新发明轮子。已经有在C#/。NET中实现FTPS服务器的库，例如SecureBlackbox(但是，它是商业化的)。