Connection terminated without SSL shutdown - buggy client?

[hhapp0728]

I used filezilla 3.6.0.2 to connect the vsftpd server. Below is the vsftpd.log:

Thu Jan 10 16:07:55 2013 [pid 950] CONNECT: Client "xx.xx.xx.174"
Thu Jan 10 16:07:55 2013 [pid 949] [li] OK LOGIN: Client "xx.xx.xx.174"
Thu Jan 10 16:08:07 2013 [pid 956] CONNECT: Client "xx.xx.xx.174"
Thu Jan 10 16:08:07 2013 [pid 955] [li] OK LOGIN: Client "xx.xx.xx.174"
Thu Jan 10 16:08:07 2013 [pid 960] [li] OK DOWNLOAD: Client "xx.xx.xx.174", "/id.txt", 401 bytes, 1.53Kbyte/sec
Thu Jan 10 16:09:07 2013 [pid 956] [li] DEBUG: Client "xx.xx.xx.174", "Connection terminated without SSL shutdown - buggy client?"

FileZilla log:

Status: Connecting to xx.xx.xx.180:21...
Status: Connection established, waiting for welcome message...
Trace: CFtpControlSocket::OnReceive()
Response: 220 Welcome.
Trace: CFtpControlSocket::SendNextCommand()
Command: AUTH TLS
Trace: CFtpControlSocket::OnReceive()
Response: 234 Proceed with negotiation.
Status: Initializing TLS...
Trace: CTlsSocket::Handshake()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: TLS Handshake successful
Trace: Cipher: AES-128-CBC, MAC: SHA1
Status: Verifying certificate...
Trace: CFtpControlSocket::SendNextCommand()
Command: USER liq
Status: TLS/SSL connection established.
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 331 Please specify the password.
Trace: CFtpControlSocket::SendNextCommand()
Command: PASS **********
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 230 Login successful.
Trace: CFtpControlSocket::SendNextCommand()
Command: SYST
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 215 UNIX Type: L8
Trace: CFtpControlSocket::SendNextCommand()
Command: FEAT
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 211-Features:
Response: AUTH SSL
Response: AUTH TLS
Response: EPRT
Response: EPSV
Response: MDTM
Response: PASV
Response: PBSZ
Response: PROT
Response: REST STREAM
Response: SIZE
Response: TVFS
Response: UTF8
Response: 211 End
Trace: CFtpControlSocket::SendNextCommand()
Command: OPTS UTF8 ON
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 Always in UTF8 mode.
Trace: CFtpControlSocket::SendNextCommand()
Command: PBSZ 0
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 PBSZ set to 0.
Trace: CFtpControlSocket::SendNextCommand()
Command: PROT P
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 PROT now Private.
Status: Connected
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Trace: Measured latency of 6 ms
Status: Retrieving directory listing...
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ChangeDirSend()
Command: PWD
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 257 "/"
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: CFtpControlSocket::ListSubcommandResult()
Trace: state = 1
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 1
Command: TYPE I
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 Switching to Binary mode.
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 1
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 2
Command: PASV
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 227 Entering Passive Mode (xx,xx,xx,180,255,129).
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 2
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 4
Command: LIST
Trace: CTransferSocket::OnConnect
Trace: CTlsSocket::Handshake()
Trace: Trying to resume existing TLS session.
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CFtpControlSocket::OnReceive()
Response: 150 Here comes the directory listing.
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: CTlsSocket::OnRead()
Trace: CTransferSocket::OnReceive(), m_transferMode=0
Trace: CTlsSocket::OnRead()
Trace: CTransferSocket::OnReceive(), m_transferMode=0
Trace: CTransferSocket::TransferEnd(1)
Trace: CFtpControlSocket::TransferEnd()
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 226 Directory send OK.
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 7
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: CFtpControlSocket::ListSubcommandResult()
Trace: state = 3
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ListSend()
Trace: state = 4
Status: Calculating timezone offset of server...
Command: MDTM Joomla_3.0.2-Stable-Full_Package.tar.gz
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 213 20130109200821
Trace: CFtpControlSocket::ListParseResponse()
Status: Timezone offsets: Server: 0 seconds. Local: 28800 seconds. Difference: 28800 seconds.
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Status: Directory listing successful
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Status: Connecting to xx.xx.xx.180:21...
Status: Connection established, waiting for welcome message...
Trace: CFtpControlSocket::OnReceive()
Response: 220 Welcome.
Trace: CFtpControlSocket::SendNextCommand()
Command: AUTH TLS
Trace: CFtpControlSocket::OnReceive()
Response: 234 Proceed with negotiation.
Status: Initializing TLS...
Trace: CTlsSocket::Handshake()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: TLS Handshake successful
Trace: Cipher: AES-128-CBC, MAC: SHA1
Status: Verifying certificate...
Trace: CFtpControlSocket::SendNextCommand()
Command: USER liq
Status: TLS/SSL connection established.
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 331 Please specify the password.
Trace: CFtpControlSocket::SendNextCommand()
Command: PASS **********
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 230 Login successful.
Trace: CFtpControlSocket::SendNextCommand()
Command: OPTS UTF8 ON
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 Always in UTF8 mode.
Trace: CFtpControlSocket::SendNextCommand()
Command: PBSZ 0
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 PBSZ set to 0.
Trace: CFtpControlSocket::SendNextCommand()
Command: PROT P
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 PROT now Private.
Status: Connected
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Trace: Measured latency of 9 ms
Trace: CFtpControlSocket::FileTransfer()
Status: Starting download of /id_rsa.pub
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ChangeDirSend()
Command: CWD /
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 250 Directory successfully changed.
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ChangeDirSend()
Command: PWD
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 257 "/"
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: FileTransferSubcommandResult()
Trace: CFtpControlSocket::SendNextCommand()
Trace: FileTransferSend()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 1
Command: TYPE I
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 200 Switching to Binary mode.
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 1
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 2
Command: PASV
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 227 Entering Passive Mode (xx,xx,xx,180,255,129).
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 2
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: state = 4
Command: RETR id_rsa.pub
Trace: CTransferSocket::OnConnect
Trace: CTlsSocket::Handshake()
Trace: Trying to resume existing TLS session.
Trace: CTlsSocket::ContinueHandshake()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::OnSend()
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::ContinueHandshake()
Trace: CFtpControlSocket::OnReceive()
Response: 150 Opening BINARY mode data connection for id_rsa.pub (401 bytes).
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: CTlsSocket::OnRead()
Trace: CTransferSocket::OnReceive(), m_transferMode=2
Trace: CTlsSocket::OnRead()
Trace: CTransferSocket::OnReceive(), m_transferMode=2
Trace: CTransferSocket::TransferEnd(1)
Trace: CFtpControlSocket::TransferEnd()
Trace: CTlsSocket::OnRead()
Trace: CFtpControlSocket::OnReceive()
Response: 226 Transfer complete.
Trace: CFtpControlSocket::TransferParseResponse()
Trace: code = 2
Trace: state = 7
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: FileTransferSubcommandResult()
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Status: File transfer successful, transferred 401 bytes in 1 second
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Status: Disconnected from server
Trace: CControlSocket::DoClose(64)
Trace: CFtpControlSocket::ResetOperation(66)
Trace: CControlSocket::ResetOperation(66)
Trace: CFileZillaEnginePrivate::ResetOperation(66)
Trace: CControlSocket::DoClose(64)
Trace: CControlSocket::DoClose(64)
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Trace: CTlsSocket::OnRead()
Trace: CTlsSocket::Failure(-15, 10053)
Error: GnuTLS error -15: An unexpected TLS packet was received.
Trace: CRealControlSocket::OnClose(10053)
Error: Disconnected from server: ECONNABORTED - Connection aborted
Trace: CControlSocket::DoClose(64)
Trace: CFtpControlSocket::ResetOperation(66)
Trace: CControlSocket::ResetOperation(66)
Trace: CFileZillaEnginePrivate::ResetOperation(66)



Any suggestion?
Thanks.

[botg]

After around a minute of inactivity, the idle connections used for transfers are simply being closed in the most efficient way. Nothing wrong with that.

[hhapp0728]

thanks for your response.

As "Nothing wrong with that", maybe it should not show the following message to bother user:)

Error: GnuTLS error -15: An unexpected TLS packet was received.
Error: Disconnected from server: ECONNABORTED - Connection aborted