curl/docs/TODO

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TODO

 Things to do in project cURL. Please tell me what you think, contribute and
 send me patches that improve things! Also check the http://curl.haxx.se/dev
 web section for various development notes.

To do in a future release (random order):

 * FTP ASCII upload does not follow RFC959 section 3.1.1.1: 
    "The sender converts the data from an internal character representation to
    the standard 8-bit NVT-ASCII representation (see the Telnet
    specification).  The receiver will convert the data from the standard form
    to his own internal form."

 * Make the connect non-blocking so that timeouts work for connect in 
   multi-threaded programs 

 * Add an interface that enables a user to select prefered SSL ciphers to use.

 * Consider an interface to libcurl that allows applications to easier get to
   know what cookies that are sent back in the response headers.

 * HTTP PUT for files passed on stdin. Requires libcurl to send the file
   with chunked content encoding. http://curl.haxx.se/dev/HTTP-PUT-stdin.txt

 * Introduce another callback interface for upload/download that makes one
   less copy of data and thus a faster operation.
   http://curl.haxx.se/dev/no_copy_callbacks.txt

 * An option to only download remote FTP files if they're newer than the local
   one is a good idea, and it would fit right into the same syntax as the
   already working http dito works. It of course requires that 'MDTM' works,
   and it isn't a standard FTP command.

 * Suggested on the mailing list: CURLOPT_FTP_MKDIR...!

 * Add configure options that disables certain protocols in libcurl to
   decrease footprint.  '--disable-[protocol]' where protocol is http, ftp,
   telnet, ldap, dict or file.

 * Extend the test suite to include telnet. The telnet could just do ftp or
   http operations (for which we have test servers).

 * Make TELNET work on windows!

 * Add a command line option that allows the output file to get the same time
   stamp as the remote file. libcurl already is capable of fetching the remote
   file's date.

 * Make curl's SSL layer option capable of using other free SSL libraries.
   Such as the Mozilla Security Services
   (http://www.mozilla.org/projects/security/pki/nss/) and GNUTLS
   (http://gnutls.hellug.gr/)

 * Add asynchronous name resolving, as this enables full timeout support for
   fork() systems. http://curl.haxx.se/dev/async-resolver.txt

 * Move non-URL related functions that are used by both the lib and the curl
   application to a separate "portability lib".

 * Add libcurl support/interfaces for more languages. C++ wrapper perhaps?

 * "Content-Encoding: compress/gzip/zlib" HTTP 1.1 clearly defines how to get
   and decode compressed documents. There is the zlib that is pretty good at
   decompressing stuff. This work was started in October 1999 but halted again
   since it proved more work than we thought. It is still a good idea to
   implement though.

 * Authentication: NTLM. Support for that MS crap called NTLM
   authentication. MS proxies and servers sometime require that. Since that
   protocol is a proprietary one, it involves reverse engineering and network
   sniffing. This should however be a library-based functionality. There are a
   few different efforts "out there" to make open source HTTP clients support
   this and it should be possible to take advantage of other people's hard
   work. http://modntlm.sourceforge.net/ is one. There's a web page at
   http://www.innovation.ch/java/ntlm.html that contains detailed reverse-
   engineered info.

 * RFC2617 compliance, "Digest Access Authentication"
   A valid test page seem to exist at:
   http://hopf.math.nwu.edu/testpage/digest/
   And some friendly person's server source code is available at
   http://hopf.math.nwu.edu/digestauth/index.html
   Then there's the Apache mod_digest source code too of course.  It seems as
   if Netscape doesn't support this, and not many servers do. Although this is
   a lot better authentication method than the more common "Basic". Basic
   sends the password in cleartext over the network, this "Digest" method uses
   a challange-response protocol which increases security quite a lot.

 * Other proxies
   Ftp-kind proxy, Socks5, whatever kind of proxies are there?

 * Full IPv6 Awareness and support. (This is partly done.)  RFC 2428 "FTP
   Extensions for IPv6 and NATs" is interesting. PORT should be replaced with
   EPRT for IPv6 (done), and EPSV instead of PASV.