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interoperability 2014-07-23		interoperability 2023-11-13 (current)
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	====== Interoperability ======		====== Interoperability ======
-	Following table shows known issues of interoperability with various [[SFTP]] servers. It includes both problems of the servers or known problems (typically fixed) of WinSCP that emerge with particular server only. It also includes special (even proprietary) features of some servers that WinSCP can use.	+	Following table shows known issues of interoperability with various [[SFTP]], [[FTP]] and [[WebDAV]] servers. It includes both problems of the servers or known problems (typically fixed) of WinSCP that emerge with particular server only. It also includes special (even proprietary) features of some servers that WinSCP can use.

	Workarounds for bugs of major SFTP servers can be configured on //[[ui_login_sftp#bugs\|SFTP page]]// of Advanced Site Settings dialog.		Workarounds for bugs of major SFTP servers can be configured on //[[ui_login_sftp#bugs\|SFTP page]]// of Advanced Site Settings dialog.

	^ Server ^ Issue ^ Solution / Use ^		^ Server ^ Issue ^ Solution / Use ^
-	^ OpenSSH \| Supports SFTP version 3 only. \| \|	+	^ ==OpenSSH== \| Supports SFTP version 3 only. \| \|
	^ \| Cannot handle SFTP packets larger than 256 KB, but due to support for SFTP version 3 only, it cannot report the limitation. \| Since 3.7.6 WinSCP automatically limits size of SFTP packet to 256 KB when connected to OpenSSH SFTP server. \|		^ \| Cannot handle SFTP packets larger than 256 KB, but due to support for SFTP version 3 only, it cannot report the limitation. \| Since 3.7.6 WinSCP automatically limits size of SFTP packet to 256 KB when connected to OpenSSH SFTP server. \|
-	^ \| [[ui_login_sftp#symlink\|Reverses order of symlink command arguments]] (''SSH_FXP_SYMLINK'' request). \| Since 3.6.1 WinSCP automatically reverses the order too, when connected to OpenSSH SFTP server. Since 3.7.2 the behaviour is configurable. \|	+	^ \| [[ui_login_sftp#link\|Reverses order of link command arguments]] (''SSH_FXP_SYMLINK'' request). \| Since 3.6.1 WinSCP automatically reverses the order too, when connected to OpenSSH SFTP server. Since 3.7.2 the behavior is configurable. \|
	^ \| [[ui_login_sftp#signedts\|Misinterprets file timestamps prior to 1970]]. \| Since 3.7.4 WinSCP automatically interprets the timestamps in the same incorrect way when connected to OpenSSH SFTP server. \|		^ \| [[ui_login_sftp#signedts\|Misinterprets file timestamps prior to 1970]]. \| Since 3.7.4 WinSCP automatically interprets the timestamps in the same incorrect way when connected to OpenSSH SFTP server. \|
-	^ \| Cannot set [[ui_permissions#special_permissions\|special permissions]]. \| User can issue [[remote_command\|remote command]] to set these permissions. \|	+	^ \| Proprietary SFTP protocol extension ''statvfs@openssh.com'' for checking space available. \| WinSCP supports that since 5.2.7 RC. \|
-	^ Bitvise WinSSHD \| Does not announce support for SFTP extensions (checking space available, checksum calculation, remote file duplication). \| WinSCP can handle that since 5.6.1 beta. \|	+	^ \| Proprietary SFTP protocol extension ''hardlink@openssh.com'' for creating hard links. \| WinSCP supports that since 5.6.1 beta. [[bug>1192]] \|
-	^ VShell \| Windows version does not have Unix-like behaviour. \| WinSCP can handle that since 3.2, but if version 4 or newer of SFTP protocol is used only. \|	+	^ \| Cannot set [[ui_permissions#special\|special permissions]]. \| User can issue [[remote_command\|remote command]] to set these permissions. \|
		+	^ Bitvise ==WinSSHD== \| Does not announce support for SFTP extensions (checking space available, checksum calculation, remote file duplication). \| WinSCP can handle that since 5.6.1 beta. [[bug>1191]] \|
		+	^ ProFTPD ==mod_sftp== \| Incorrectly encodes ''space-available'' SFTP packet. \| WinSCP can handle that since 5.5.5. [[bug>1184]] \|
		+	^ \| Follows OpenSSH bug [[ui_login_sftp#link\|Reverses order of link command arguments]] for both symbolic links and hard links. \| WinSCP can handle that since 5.5.5 (symbolic links) [[bug>1185]] and 5.6.1 (hard links) \|
		+	^ \| Incorrectly pads RSA signature. \| WinSCP can handle that since 5.5.3. [[bug>1091]] \|
		+	^ \| Proprietary FTP protocol extension ''SITE COPY''/''CPFR''/''CPTO'' to duplicate a remote file. \| WinSCP supports that since 5.6.2 beta. \|
		+	^ \| Proprietary FTP protocol extension ''SITE SYMLINK'' to create a symbolic link. \| WinSCP supports that since 5.6.2 beta. \|
		+	^ \| Incorrectly encodes response to ''SSH_FXP_REALPATH'' with SFTP version 6 (fixed in 1.3.5a and 1.3.6rc1). \| WinSCP can handle that since 5.7.1. [[bug>1289]] \|
		+	^ ==VShell== \| Windows version does not have Unix-like behavior. \| WinSCP can handle that since 3.2, but if version 4 or newer of SFTP protocol is used only. \|
	^ \| Provides file attributes (''SSH_FILEXFER_ATTR_BITS'') with SFTP version 4, when it is allowed since version 5 only. \| WinSCP can handle that since 3.7.3. \|		^ \| Provides file attributes (''SSH_FILEXFER_ATTR_BITS'') with SFTP version 4, when it is allowed since version 5 only. \| WinSCP can handle that since 3.7.3. \|
	^ \| Incorrectly encodes list of supported SFTP versions. \| WinSCP can handle that since 3.8.1. \|		^ \| Incorrectly encodes list of supported SFTP versions. \| WinSCP can handle that since 3.8.1. \|
	^ \| Windows version does not provide owner/group in directory listing. \| WinSCP can request them explicitly before showing Properties dialog since 3.8. \|		^ \| Windows version does not provide owner/group in directory listing. \| WinSCP can request them explicitly before showing Properties dialog since 3.8. \|
	^ \| If single root option is disabled on the Windows version of the server, it provides list of drives on startup. \| WinSCP can show the drives on remote directory tree since 3.7.5. \|		^ \| If single root option is disabled on the Windows version of the server, it provides list of drives on startup. \| WinSCP can show the drives on remote directory tree since 3.7.5. \|
-	^ \| Incorrectly announces support for checksum calculation in versions 4.0.3 and older. \| WinSCP can handle that since 5.5.5/5.6.1 beta. \|	+	^ \| Incorrectly announces support for checksum calculation in versions 4.0.3 and older. \| WinSCP can handle that since 5.5.5. [[bug>1190]] \|
-	^ Sun SSH \| See OpenSSH. \|\|	+	^ ==?sun_ssh== %%Sun SSH%% \| See [[#openssh\|OpenSSH]]. \|\|
	^ FTPshell \| Does not support reading of file attributes (''SSH_FXP_LSTAT'' request). \| WinSCP uses this also to check existence of directory before entering it. To allow user to enter to directory on FTPshell server, since 3.7.5 WinSCP automatically fall backs to checking the existence by reading directory content. This in turn forbids used to enter traverse-only directories (with permissions 110). \|		^ FTPshell \| Does not support reading of file attributes (''SSH_FXP_LSTAT'' request). \| WinSCP uses this also to check existence of directory before entering it. To allow user to enter to directory on FTPshell server, since 3.7.5 WinSCP automatically fall backs to checking the existence by reading directory content. This in turn forbids used to enter traverse-only directories (with permissions 110). \|
	^ MultiNet \| For SFTP version 4, it indicates presence of UID/GUI in directory listing, but actually it does not include them. \| These attributes are not allowed for SFTP version 4 and newer, so WinSCP ignores the indication since 3.7.5. \|		^ MultiNet \| For SFTP version 4, it indicates presence of UID/GUI in directory listing, but actually it does not include them. \| These attributes are not allowed for SFTP version 4 and newer, so WinSCP ignores the indication since 3.7.5. \|
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	^ CoreFTP server \| Violates SFTP protocol in response to changing file properties. \| Turn off setting file properties in [[ui_transfer_custom\|transfer settings]]. \|		^ CoreFTP server \| Violates SFTP protocol in response to changing file properties. \| Turn off setting file properties in [[ui_transfer_custom\|transfer settings]]. \|
	^ WeOnlyDo/freeSSHd server \| Ignores ''SSH_FXF_EXCL'' flag when opening file, so WinSCP won't detect that remote file already exists when uploading and won't show overwrite confirmation prompt. \| No workaround exists. \|		^ WeOnlyDo/freeSSHd server \| Ignores ''SSH_FXF_EXCL'' flag when opening file, so WinSCP won't detect that remote file already exists when uploading and won't show overwrite confirmation prompt. \| No workaround exists. \|
		+	^ ==?iis_ftp== IIS FTP \| Does not support standard FTP command ''MFMT'' to preserve file timestamp, instead supports non-standard syntax of ''MDTM'' command. \| WinSCP supports non-standard syntax of ''MDTM'' since 5.6.2 beta. [[bug>1221]] \|
		+	^ \| Malformed ''FEAT'' response \| WinSCP can handle the malformed response to ''FEAT'' request sent by old versions of IIS (and by WS_FTP) since 5.6.4 RC. \|
		+	^ \| Includes free bytes in the status message of directory listing when //%%FTP%% Directory Browsing > Directory Listing Options > Available bytes// option is enabled. \| WinSCP can parse the information and [[ui_fsinfo#space\|display it]] since 5.8.2 beta. \|
		+	^ IIS WebDAV \| ''Translate'' header \| WinSCP uses IIS ''Translate'' header to allow download of files with unregistered extensions and source code of script files since 5.6.4 RC. [[bug>1225]] \|
		+	^ mod_dav \| ''executable'' property \| Displayed as //Executable// keyword in //Rights// column of remote [[ui_file_panel\|file panel]] since 5.8 beta. \|
		+	^ ==Cerberus== %%FTP%% server \| Incorrectly indicates end of directory listing in SFTP-6. \| WinSCP ignores the indication since 5.7.5. [[bug>1338]] \|
		+	^ ==OneDrive== \| File name escaping \| OneDrive WebDAV interface uses a proprietary ''<nowiki>^</nowiki>''-encoding for special characters in file names. WinSCP can handle that since 5.18.4. [[bug>1824]] \|
		+	^ ==Google Cloud== S3 \| Max key limit \| Google Cloud bucket S3 interoperability interface does not support ''max-keys'' parameter. WinSCP will not use it when connected to the Google Cloud since 5.18.2. [[bug>1939]] \|
		+

interoperability 2014-07-23		interoperability 2023-11-13 (current)
	Line 1:		Line 1:
	====== Interoperability ======		====== Interoperability ======
-	Following table shows known issues of interoperability with various [[SFTP]] servers. It includes both problems of the servers or known problems (typically fixed) of WinSCP that emerge with particular server only. It also includes special (even proprietary) features of some servers that WinSCP can use.	+	Following table shows known issues of interoperability with various [[SFTP]], [[FTP]] and [[WebDAV]] servers. It includes both problems of the servers or known problems (typically fixed) of WinSCP that emerge with particular server only. It also includes special (even proprietary) features of some servers that WinSCP can use.

	Workarounds for bugs of major SFTP servers can be configured on //[[ui_login_sftp#bugs\|SFTP page]]// of Advanced Site Settings dialog.		Workarounds for bugs of major SFTP servers can be configured on //[[ui_login_sftp#bugs\|SFTP page]]// of Advanced Site Settings dialog.

	^ Server ^ Issue ^ Solution / Use ^		^ Server ^ Issue ^ Solution / Use ^
-	^ OpenSSH \| Supports SFTP version 3 only. \| \|	+	^ ==OpenSSH== \| Supports SFTP version 3 only. \| \|
	^ \| Cannot handle SFTP packets larger than 256 KB, but due to support for SFTP version 3 only, it cannot report the limitation. \| Since 3.7.6 WinSCP automatically limits size of SFTP packet to 256 KB when connected to OpenSSH SFTP server. \|		^ \| Cannot handle SFTP packets larger than 256 KB, but due to support for SFTP version 3 only, it cannot report the limitation. \| Since 3.7.6 WinSCP automatically limits size of SFTP packet to 256 KB when connected to OpenSSH SFTP server. \|
-	^ \| [[ui_login_sftp#symlink\|Reverses order of symlink command arguments]] (''SSH_FXP_SYMLINK'' request). \| Since 3.6.1 WinSCP automatically reverses the order too, when connected to OpenSSH SFTP server. Since 3.7.2 the behaviour is configurable. \|	+	^ \| [[ui_login_sftp#link\|Reverses order of link command arguments]] (''SSH_FXP_SYMLINK'' request). \| Since 3.6.1 WinSCP automatically reverses the order too, when connected to OpenSSH SFTP server. Since 3.7.2 the behavior is configurable. \|
	^ \| [[ui_login_sftp#signedts\|Misinterprets file timestamps prior to 1970]]. \| Since 3.7.4 WinSCP automatically interprets the timestamps in the same incorrect way when connected to OpenSSH SFTP server. \|		^ \| [[ui_login_sftp#signedts\|Misinterprets file timestamps prior to 1970]]. \| Since 3.7.4 WinSCP automatically interprets the timestamps in the same incorrect way when connected to OpenSSH SFTP server. \|
-	^ \| Cannot set [[ui_permissions#special_permissions\|special permissions]]. \| User can issue [[remote_command\|remote command]] to set these permissions. \|	+	^ \| Proprietary SFTP protocol extension ''statvfs@openssh.com'' for checking space available. \| WinSCP supports that since 5.2.7 RC. \|
-	^ Bitvise WinSSHD \| Does not announce support for SFTP extensions (checking space available, checksum calculation, remote file duplication). \| WinSCP can handle that since 5.6.1 beta. \|	+	^ \| Proprietary SFTP protocol extension ''hardlink@openssh.com'' for creating hard links. \| WinSCP supports that since 5.6.1 beta. [[bug>1192]] \|
-	^ VShell \| Windows version does not have Unix-like behaviour. \| WinSCP can handle that since 3.2, but if version 4 or newer of SFTP protocol is used only. \|	+	^ \| Cannot set [[ui_permissions#special\|special permissions]]. \| User can issue [[remote_command\|remote command]] to set these permissions. \|
		+	^ Bitvise ==WinSSHD== \| Does not announce support for SFTP extensions (checking space available, checksum calculation, remote file duplication). \| WinSCP can handle that since 5.6.1 beta. [[bug>1191]] \|
		+	^ ProFTPD ==mod_sftp== \| Incorrectly encodes ''space-available'' SFTP packet. \| WinSCP can handle that since 5.5.5. [[bug>1184]] \|
		+	^ \| Follows OpenSSH bug [[ui_login_sftp#link\|Reverses order of link command arguments]] for both symbolic links and hard links. \| WinSCP can handle that since 5.5.5 (symbolic links) [[bug>1185]] and 5.6.1 (hard links) \|
		+	^ \| Incorrectly pads RSA signature. \| WinSCP can handle that since 5.5.3. [[bug>1091]] \|
		+	^ \| Proprietary FTP protocol extension ''SITE COPY''/''CPFR''/''CPTO'' to duplicate a remote file. \| WinSCP supports that since 5.6.2 beta. \|
		+	^ \| Proprietary FTP protocol extension ''SITE SYMLINK'' to create a symbolic link. \| WinSCP supports that since 5.6.2 beta. \|
		+	^ \| Incorrectly encodes response to ''SSH_FXP_REALPATH'' with SFTP version 6 (fixed in 1.3.5a and 1.3.6rc1). \| WinSCP can handle that since 5.7.1. [[bug>1289]] \|
		+	^ ==VShell== \| Windows version does not have Unix-like behavior. \| WinSCP can handle that since 3.2, but if version 4 or newer of SFTP protocol is used only. \|
	^ \| Provides file attributes (''SSH_FILEXFER_ATTR_BITS'') with SFTP version 4, when it is allowed since version 5 only. \| WinSCP can handle that since 3.7.3. \|		^ \| Provides file attributes (''SSH_FILEXFER_ATTR_BITS'') with SFTP version 4, when it is allowed since version 5 only. \| WinSCP can handle that since 3.7.3. \|
	^ \| Incorrectly encodes list of supported SFTP versions. \| WinSCP can handle that since 3.8.1. \|		^ \| Incorrectly encodes list of supported SFTP versions. \| WinSCP can handle that since 3.8.1. \|
	^ \| Windows version does not provide owner/group in directory listing. \| WinSCP can request them explicitly before showing Properties dialog since 3.8. \|		^ \| Windows version does not provide owner/group in directory listing. \| WinSCP can request them explicitly before showing Properties dialog since 3.8. \|
	^ \| If single root option is disabled on the Windows version of the server, it provides list of drives on startup. \| WinSCP can show the drives on remote directory tree since 3.7.5. \|		^ \| If single root option is disabled on the Windows version of the server, it provides list of drives on startup. \| WinSCP can show the drives on remote directory tree since 3.7.5. \|
-	^ \| Incorrectly announces support for checksum calculation in versions 4.0.3 and older. \| WinSCP can handle that since 5.5.5/5.6.1 beta. \|	+	^ \| Incorrectly announces support for checksum calculation in versions 4.0.3 and older. \| WinSCP can handle that since 5.5.5. [[bug>1190]] \|
-	^ Sun SSH \| See OpenSSH. \|\|	+	^ ==?sun_ssh== %%Sun SSH%% \| See [[#openssh\|OpenSSH]]. \|\|
	^ FTPshell \| Does not support reading of file attributes (''SSH_FXP_LSTAT'' request). \| WinSCP uses this also to check existence of directory before entering it. To allow user to enter to directory on FTPshell server, since 3.7.5 WinSCP automatically fall backs to checking the existence by reading directory content. This in turn forbids used to enter traverse-only directories (with permissions 110). \|		^ FTPshell \| Does not support reading of file attributes (''SSH_FXP_LSTAT'' request). \| WinSCP uses this also to check existence of directory before entering it. To allow user to enter to directory on FTPshell server, since 3.7.5 WinSCP automatically fall backs to checking the existence by reading directory content. This in turn forbids used to enter traverse-only directories (with permissions 110). \|
	^ MultiNet \| For SFTP version 4, it indicates presence of UID/GUI in directory listing, but actually it does not include them. \| These attributes are not allowed for SFTP version 4 and newer, so WinSCP ignores the indication since 3.7.5. \|		^ MultiNet \| For SFTP version 4, it indicates presence of UID/GUI in directory listing, but actually it does not include them. \| These attributes are not allowed for SFTP version 4 and newer, so WinSCP ignores the indication since 3.7.5. \|
	Line 25:		Line 33:
	^ CoreFTP server \| Violates SFTP protocol in response to changing file properties. \| Turn off setting file properties in [[ui_transfer_custom\|transfer settings]]. \|		^ CoreFTP server \| Violates SFTP protocol in response to changing file properties. \| Turn off setting file properties in [[ui_transfer_custom\|transfer settings]]. \|
	^ WeOnlyDo/freeSSHd server \| Ignores ''SSH_FXF_EXCL'' flag when opening file, so WinSCP won't detect that remote file already exists when uploading and won't show overwrite confirmation prompt. \| No workaround exists. \|		^ WeOnlyDo/freeSSHd server \| Ignores ''SSH_FXF_EXCL'' flag when opening file, so WinSCP won't detect that remote file already exists when uploading and won't show overwrite confirmation prompt. \| No workaround exists. \|
		+	^ ==?iis_ftp== IIS FTP \| Does not support standard FTP command ''MFMT'' to preserve file timestamp, instead supports non-standard syntax of ''MDTM'' command. \| WinSCP supports non-standard syntax of ''MDTM'' since 5.6.2 beta. [[bug>1221]] \|
		+	^ \| Malformed ''FEAT'' response \| WinSCP can handle the malformed response to ''FEAT'' request sent by old versions of IIS (and by WS_FTP) since 5.6.4 RC. \|
		+	^ \| Includes free bytes in the status message of directory listing when //%%FTP%% Directory Browsing > Directory Listing Options > Available bytes// option is enabled. \| WinSCP can parse the information and [[ui_fsinfo#space\|display it]] since 5.8.2 beta. \|
		+	^ IIS WebDAV \| ''Translate'' header \| WinSCP uses IIS ''Translate'' header to allow download of files with unregistered extensions and source code of script files since 5.6.4 RC. [[bug>1225]] \|
		+	^ mod_dav \| ''executable'' property \| Displayed as //Executable// keyword in //Rights// column of remote [[ui_file_panel\|file panel]] since 5.8 beta. \|
		+	^ ==Cerberus== %%FTP%% server \| Incorrectly indicates end of directory listing in SFTP-6. \| WinSCP ignores the indication since 5.7.5. [[bug>1338]] \|
		+	^ ==OneDrive== \| File name escaping \| OneDrive WebDAV interface uses a proprietary ''<nowiki>^</nowiki>''-encoding for special characters in file names. WinSCP can handle that since 5.18.4. [[bug>1824]] \|
		+	^ ==Google Cloud== S3 \| Max key limit \| Google Cloud bucket S3 interoperability interface does not support ''max-keys'' parameter. WinSCP will not use it when connected to the Google Cloud since 5.18.2. [[bug>1939]] \|
		+

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