如果运行了tls_start，EventMachine是否会在close_connection上发出close_notify？
如果运行了tls_start，EventMachine是否会在close_connection上发出close_notify？
提问于 2012-09-25 16:25:33
我正在尝试编程一个简单的FTPS服务器基于EventMachine。
控制套接字工作正常。当使用数据套接字进行数据传输时，似乎一切工作正常(TLS握手成功完成，数据被接收)，但随后我收到一条错误消息。下面是我在Filezilla中得到的：
Command: LIST
Response: 150 Opening ASCII mode data connection for file list
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 1
Trace: state = 4
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 5
Trace: CTransferSocket::OnConnect
Trace: CTlsSocket::Handshake()
Trace: gnutls_session_get_data on primary socket failed: -51
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: Handshake successful
Trace: Cipher: AES-256-CBC, MAC: SHA1
Trace: CTlsSocket::OnRead()
Trace: CTransferSocket::OnConnect
Trace: CTransferSocket::OnReceive(), m_transferMode=0
Listing: -rwxrwxrwx 1 owner group 1011 Dec 12 23:05 a.tmp
Trace: CTlsSocket::Failure(-9, 0)
Error: GnuTLS error -9: A TLS packet with unexpected length was received.
Status: Server did not properly shut down TLS connection
Error: Could not read from transfer socket: ECONNABORTED - Connection aborted
Trace: CTransferSocket::TransferEnd(3)
Trace: CFtpControlSocket::OnReceive()
Response: 226 Closing data connection, sent 70 bytes
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 5
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 8
Trace: CFtpControlSocket::TransferEnd()
Trace: CFtpControlSocket::ResetOperation(2)
Trace: CControlSocket::ResetOperation(2)
Trace: CFtpControlSocket::ParseSubcommandResult(2)
Trace: CFtpControlSocket::ListSubcommandResult()
Trace: state = 3
Trace: CFtpControlSocket::ResetOperation(2)
Trace: CControlSocket::ResetOperation(2)
Error: Failed to retrieve directory listing
Trace: CFileZillaEnginePrivate::ResetOperation(2)ftp-ssl也会发出一个错误，尽管有些不同
--> LIST
150 Opening ASCII mode data connection for file list
===>START SSL connect on DATA
ftp: SSL_connect DATA error 0 - error:00000000:lib(0):func(0):reason(0)
226 Closing data connection, sent 70 bytes
421 Service not available, remote server has closed connection从我在web上发现的情况来看，我怀疑这是因为close_notify没有在连接结束时发出？如果是这样的话，是否有任何已知的基于Ruby的解决方案(f.ex.使用OpenSSL::SSL::SSLSocket)？
回答 2
Stack Overflow用户
回答已采纳
发布于 2013-08-28 04:28:58
答案很简短:不，如果运行的是tls_start，EventMachine不会在close_connection上发出close_notify。
Stack Overflow用户
发布于 2013-12-12 09:47:57
我发现SSL在读取证书后“重新打开”了一个连接，所以这里的解决办法是：
def receive_data bitOfData
if (self.class isSomeSortOfTLSreadingClass && bitOfData.length == 1) then
@headBuff << bitOfData
return
end
# TLS connection closes on first byte, then re-opens.
end页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/12578935
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