Serv-U是Rob Beckers开发的一个功能强大的、简单易用的、成熟的FTP服务器,FTP服务器用户通过Internet的FTP协议共享文件.Serv-U不仅仅能100%适用于标准的FTP,同样也包括了很多功能,是一个完美的文件共享解决方案.

 

Changes in Serv-U 7.0.0.1, released April 2, 2008:
Features:
* Added support for the HTTP protocol with a built-in web client.
* Added support for the SSH protocol.
* Added support for FTP Voyager JV via the HTTP protocol.
* Added the THMB command to convert graphical files to thumbnails then download. The THMB command acts exactly like RETR, except prior to transfer the file is reduced to the specified format and maximum size.
* Added the HOST command which allows the FTP client to change to a specific domain on the server. This allows the FTP server to support multiple domains on a single IP address and port. NOTE: not all FTP clients support this feature. FTP Voyager, for example, does.
* Added the DSIZ command to return the size of a directory's contents, including sub-directories. A directory may be specified, or if left blank, the current working directory is used.
* Added the AVBL command to return the number of bytes available in a directory. A directory may be specified, or if left blank, the current working directory is used.
* Added support to enable and disable specific FTP commands.
* Added support to change nearly any FTP command responses.
* Added dynamic HELP information where HELP sends all supported and enabled commands.
* Added command level HELP. For example "HELP LIST" returns help specifically about the LIST command
* Added the use of a floating buffer size when reading from files being downloaded by a client. The floating buffer size is based on the transfer rate for the ongoing transfer, making transfers much more efficient.
* Added directory rename rights setting.
* Added file rename rights setting.
* Added the "\" path concept. The "\" path is similar to "My Computer" in Windows Explorer. When a user's home directory is set to "\" a listing of "/" shows the available disk drives. Users who are not logged in their home directory can also take advantage of this feature when the "Allow root ("/") to list drives for unlocked users" is set to true at the user, group, domain or server levels.
* Changed FEAT to list special commands only when they're enabled.
* Changed the "OPTS MLST" command to be more forgiving of clients that don't follow the RFC exactly. For example, Serv-U now accepts both "OPTS MLST Type;Size;Modify;Perm;" and "OPTS MLST Type;Size;Modify;Perm"
* Added the "Perm" feature for MLST and MLSD commands, "Perm" identifies permissions for an item in an MLST/MLSD listing, relative to the connected user.
* Added the "Win32.dt" feature for MLST and MLSD commands, "Win32.dt" identifies a drive type for disk drive listings, when listing /C:/, /D:/, or /. This feature will not be returned in a directory listing if the item is not a disk drive.
* Added the "Win32.dl" feature for MLST and MLSD commands, "Win32.dl" identifies a drive label for disk drive listings, when listing /C:/, /D:/, or /. This feature will not be returned in a directory listing if the item is not a disk drive.
* Added more information to the MLST / MSLD Type fact for "os.UNIX=slink" where Serv-U now also appends ":linked_path" if this information is available to the user.
* Improved Windows Shortcut resolution to also include shortcuts using relative paths and other combinations of attributes.
* Added the ability to specify path names with spaces when using the "SITE EXEC" command. If spaces are required, Serv-U parses the file name in quotes.
* Added the XDEL command, same as DELE.
* Added RMDA directory as a superset of RMD, allowing the client to delete a directory an all of its files and sub-directories in one command. An error response indicates that the client should refresh its directory listing to determine which files and sub-directories were deleted and which where not.
* Changed Windows Link support so that when Windows .LNK files are encountered they are treated as the file they reference when listing, for the SIZE command, and transfer operations.
* Removed the -L LIST and NLST option because it can conflict with other settings.
* Perform all lengthy commands in a worker thread, freeing up the main thread to service other clients. These operations include LIST, NLST, MLST, MLSD, RMDA, RETR, THMB, RNTO, XCRC, STOR, APPE, STOU, SITE EXEC, and all other lengthy operations.
* Added the use of multiple CPUs to perform CPU intensive activity.
* Added transfer totals and transfer rates to the "226 Transfer complete." reply.
* Added compression totals, statistics, and transfer rates to the compressed "226 Transfer complete." reply.
* Added the ability to define anti-hammer limits for the domain in addition to at the server.
* Increased the maximum string length in a message file from 195 characters to 512 characters.
* Added an option to include server response values to the FTP command processor to include the nu