Proxy4a skips first item on GetListing()

I wrote PowerShell module which uses your FTP library. It’s been working great for months https://github.com/EvotecIT/Transferetto Today I’ve decided to add proxy support and after initial testing it seems to work, but the results differ. I am testing using some public proxy, public FTP servers so it may be just related to those - but maybe not.

# Login via UserName/Password via proxy Socks 5
$Client = Connect-FTP -Server 'test.rebex.net' -Verbose -Username 'demo' -Password 'password' -ProxyHost '192.252.216.81' -ProxyPort 4145 -ProxyType FtpClientSocks5Proxy
$List = Get-FTPList -Client $Client
$List | Format-Table
Disconnect-FTP -Client $Client


# Login via UserName/Password with Proxy Socks 4
$Client = Connect-FTP -Server 'test.rebex.net' -Verbose -Username 'demo' -Password 'password' -ProxyHost '104.37.135.145' -ProxyPort 4145 -ProxyType FtpClientSocks4aProxy
$List = Get-FTPList -Client $Client
$List | Format-Table
Disconnect-FTP -Client $Client

For some reason Socks 4 doesn’t show folders:

Warning:  Failed to parse file listing: 10-19-20  03:19PM       <DIR>          pub

I am not sure whether this is related to how Socks4 works, or bug in library, but opening an issue anyways.

FTP OS: Not sure

FTP Server: Not sure

Computer OS: ? Windows 11

FluentFTP Version: ? 42.0.0

Framework: .NET 2 / 3.5 / 4 / 5 / 6 / 7 / 8 / UWP / Xamarin / Mono Net Standard 2.0 on PowerShell 5.1 and PowerShell 7

Logs :

Socks5 proxy:

# Connect()
Status:   FluentFTP 42.0.0.0
Status:   Connecting to 192.252.216.81:4145
Status:   Waiting for a response
Response: 220 Microsoft FTP Service
Status:   Detected FTP server: WindowsServerIIS
Command:  USER demo
Status:   Waiting for response to: USER demo
Response: 331 Password required for demo.
Command:  PASS password
Status:   Waiting for response to: PASS password
Response: 230 User logged in.
Command:  FEAT
Status:   Waiting for response to: FEAT
Response: 211-Extended features supported:
Response: LANG EN*
Response: UTF8
Response: AUTH TLS;TLS-C;SSL;TLS-P;
Response: PBSZ
Response: PROT C;P;
Response: CCC
Response: HOST
Response: SIZE
Response: MDTM
Response: REST STREAM
Response: 211 END
Status:   Text encoding: System.Text.UTF8Encoding
Command:  OPTS UTF8 ON
Status:   Waiting for response to: OPTS UTF8 ON
Response: 200 OPTS UTF8 command successful - UTF8 encoding now ON.
Command:  SYST
Status:   Waiting for response to: SYST
Response: 215 Windows_NT
Status:   Listing parser set to: Windows

# GetListing(null, Auto)
Command:  PWD
Status:   Waiting for response to: PWD
Response: 257 "/" is current directory.
Command:  TYPE I
Status:   Waiting for response to: TYPE I
Response: 200 Type set to I.

# OpenPassiveDataStream(AutoPassive, "LIST /", 0)
Command:  EPSV
Status:   Waiting for response to: EPSV
Response: 229 Entering Extended Passive Mode (|||1032|)
Status:   Connecting to 192.252.216.81:4145
Command:  LIST /
Status:   Waiting for response to: LIST /
Response: 125 Data connection already open; Transfer starting.
+---------------------------------------+
Listing:  10-19-20  03:19PM       <DIR>          pub
Listing:  12-17-21  11:58AM                  405 readme.txt
-----------------------------------------
Status:   Disposing FtpSocketStream...

# CloseDataStream()
Status:   Waiting for a response
Response: 226 Transfer complete.
Status:   Disposing FtpSocketStream...
Status:   Confirmed format Windows

     Type SubType FullName    Name       LinkTarget LinkCount LinkObject Modified            Created             RawModified
     ---- ------- --------    ----       ---------- --------- ---------- --------            -------             -----------
Directory Unknown /pub        pub                           0            2020-10-19 15:19:00 0001-01-01 00:00:00 2020-10-19 15:19:00
     File Unknown /readme.txt readme.txt                    0            2021-12-17 11:58:00 0001-01-01 00:00:00 2021-12-17 11:58:00


Command:  QUIT
Status:   Waiting for response to: QUIT
Response: 221 Goodbye.
Status:   Disposing FtpSocketStream...

And here’s via Socks4a:

# Connect()
Status:   FluentFTP 42.0.0.0
Status:   Connecting to 104.37.135.145:4145
Status:   Waiting for a response
Response: 220 Microsoft FTP Service
Status:   Detected FTP server: WindowsServerIIS
Command:  USER demo
Status:   Waiting for response to: USER demo
Response: 331 Password required for demo.
Command:  PASS password
Status:   Waiting for response to: PASS password
Response: 230 User logged in.
Command:  FEAT
Status:   Waiting for response to: FEAT
Response: 211-Extended features supported:
Response: LANG EN*
Response: UTF8
Response: AUTH TLS;TLS-C;SSL;TLS-P;
Response: PBSZ
Response: PROT C;P;
Response: CCC
Response: HOST
Response: SIZE
Response: MDTM
Response: REST STREAM
Response: 211 END
Status:   Text encoding: System.Text.UTF8Encoding
Command:  OPTS UTF8 ON
Status:   Waiting for response to: OPTS UTF8 ON
Response: 200 OPTS UTF8 command successful - UTF8 encoding now ON.
Command:  SYST
Status:   Waiting for response to: SYST
Response: 215 Windows_NT
Status:   Listing parser set to: Windows

# GetListing(null, Auto)
Command:  PWD
Status:   Waiting for response to: PWD
Response: 257 "/" is current directory.
Command:  TYPE I
Status:   Waiting for response to: TYPE I
Response: 200 Type set to I.

# OpenPassiveDataStream(AutoPassive, "LIST /", 0)
Command:  EPSV
Status:   Waiting for response to: EPSV
Response: 229 Entering Extended Passive Mode (|||1034|)
Status:   Connecting to 104.37.135.145:4145
Command:  LIST /
Status:   Waiting for response to: LIST /
Response: 125 Data connection already open; Transfer starting.
+---------------------------------------+
Listing:  10-19-20  03:19PM       <DIR>          pub
Listing:  12-17-21  11:58AM                  405 readme.txt
-----------------------------------------
Status:   Disposing FtpSocketStream...

# CloseDataStream()
Status:   Waiting for a response
Response: 226 Transfer complete.
Status:   Disposing FtpSocketStream...
Status:   Not in Windows format
Status:   Not in UNIX format
Status:   Not in Windows format
Status:   Not in VMS format
Status:   Not in OS/400 format
Status:   Could not detect format. Using default Unix
Warning:  Failed to parse file listing: 10-19-20  03:19PM       <DIR>          pub
Status:   Not in UNIX format
Status:   Not in UNIX format
Status:   Detected format Windows

Type SubType FullName    Name       LinkTarget LinkCount LinkObject Modified            Created             RawModified
---- ------- --------    ----       ---------- --------- ---------- --------            -------             -----------
File Unknown /readme.txt readme.txt                    0            2021-12-17 11:58:00 0001-01-01 00:00:00 2021-12-17 11:58:00


Command:  QUIT
Status:   Waiting for response to: QUIT
Response: 221 Goodbye.
Status:   Disposing FtpSocketStream...
PS C:\Support\GitHub\Transferetto>
# Dispose()
Status:   Disposing FtpClient object...
Status:   Disposing FtpSocketStream...

[PrzemyslawKlys]

I’ve tested (properly) and it works. Thank you.

[robinrodricks]

Released

https://www.nuget.org/packages/FluentFTP/42.0.1