changelog of the current development status, as one or more of these problems
may have been fixed since this was written!
+88. libcurl doesn't support CURLINFO_FILETIME for SFTP transfers and thus
+ curl's -R option also doesn't work then.
+
+87. -J/--remote-header-name doesn't decode %-encoded file names. RFC6266
+ details how it should be done. The can of worm is basically that we have no
+ charset handling in curl and ascii >=128 is a challenge for us. Not to
+ mention that decoding also means that we need to check for nastiness that is
+ attempted, like "../" sequences and the like. Probably everything to the left
+ of any embedded slashes should be cut off.
+ http://curl.haxx.se/bug/view.cgi?id=1294
+
+86. The disconnect commands (LOGOUT and QUIT) may not be sent by IMAP, POP3
+ and SMTP if a failure occurs during the authentication phase of a
+ connection.
+
+85. Wrong STARTTRANSFER timer accounting for POST requests
+ Timer works fine with GET requests, but while using POST the time for
+ CURLINFO_STARTTRANSFER_TIME is wrong. While using POST
+ CURLINFO_STARTTRANSFER_TIME minus CURLINFO_PRETRANSFER_TIME is near to zero
+ every time.
+ http://curl.haxx.se/bug/view.cgi?id=1213
+
+84. CURLINFO_SSL_VERIFYRESULT is only implemented for the OpenSSL and NSS
+ backends, so relying on this information in a generic app is flaky.
+
+82. When building with the Windows Borland compiler, it fails because the
+ "tlib" tool doesn't support hyphens (minus signs) in file names and we have
+ such in the build.
+ http://curl.haxx.se/bug/view.cgi?id=1222
+
+81. When using -J (with -O), automatically resumed downloading together with
+ "-C -" fails. Without -J the same command line works! This happens because
+ the resume logic is worked out before the target file name (and thus its
+ pre-transfer size) has been figured out!
+ http://curl.haxx.se/bug/view.cgi?id=1169
+
+80. Curl doesn't recognize certificates in DER format in keychain, but it
+ works with PEM.
+ http://curl.haxx.se/bug/view.cgi?id=1065
+
+79. SMTP. When sending data to multiple recipients, curl will abort and return
+ failure if one of the recipients indicate failure (on the "RCPT TO"
+ command). Ordinary mail programs would proceed and still send to the ones
+ that can receive data. This is subject for change in the future.
+ http://curl.haxx.se/bug/view.cgi?id=1116
+
+78. curl and libcurl don't always signal the client properly when "sending"
+ zero bytes files - it makes for example the command line client not creating
+ any file at all. Like when using FTP.
+ http://curl.haxx.se/bug/view.cgi?id=1063
+
76. The SOCKET type in Win64 is 64 bits large (and thus so is curl_socket_t on
that platform), and long is only 32 bits. It makes it impossible for
curl_easy_getinfo() to return a socket properly with the CURLINFO_LASTSOCKET
option as for all other operating systems.
-75. NTLM authentication involving unicode user name or password.
+75. NTLM authentication involving unicode user name or password only works
+ properly if built with UNICODE defined together with the WinSSL/schannel
+ backend. The original problem was mentioned in:
http://curl.haxx.se/mail/lib-2009-10/0024.html
- http://curl.haxx.se/bug/view.cgi?id=2944325
+ http://curl.haxx.se/bug/view.cgi?id=896
-74. The HTTP spec allows headers to be merged and become comma-separated
- instead of being repeated several times. This also include Authenticate: and
- Proxy-Authenticate: headers and while this hardly every happens in real life
- it will confuse libcurl which does not properly support it for all headers -
- like those Authenticate headers.
+ The WinSSL/schannel version verified to work as mentioned in
+ http://curl.haxx.se/mail/lib-2012-07/0073.html
73. if a connection is made to a FTP server but the server then just never
sends the 220 response or otherwise is dead slow, libcurl will not
acknowledge the connection timeout during that phase but only the "real"
timeout - which may surprise users as it is probably considered to be the
connect phase to most people. Brought up (and is being misunderstood) in:
- http://curl.haxx.se/bug/view.cgi?id=2844077
+ http://curl.haxx.se/bug/view.cgi?id=856
72. "Pausing pipeline problems."
http://curl.haxx.se/mail/lib-2009-07/0214.html
http://tools.ietf.org/html/draft-reschke-rfc2231-in-http-02
66. When using telnet, the time limitation options don't work.
- http://curl.haxx.se/bug/view.cgi?id=2818950
+ http://curl.haxx.se/bug/view.cgi?id=846
65. When doing FTP over a socks proxy or CONNECT through HTTP proxy and the
multi interface is used, libcurl will fail if the (passive) TCP connection
CURLOPT_FAILONERROR with FTP to detect if a file exists or not, but it is
not working: http://curl.haxx.se/mail/lib-2008-07/0295.html
-57. On VMS-Alpha: When using an http-file-upload the file is not sent to the
- Server with the correct content-length. Sending a file with 511 or less
- bytes, content-length 512 is used. Sending a file with 513 - 1023 bytes,
- content-length 1024 is used. Files with a length of a multiple of 512 Bytes
- show the correct content-length. Only these files work for upload.
- http://curl.haxx.se/bug/view.cgi?id=2057858
-
56. When libcurl sends CURLOPT_POSTQUOTE commands when connected to a SFTP
server using the multi interface, the commands are not being sent correctly
and instead the connection is "cancelled" (the operation is considered done)
prematurely. There is a half-baked (busy-looping) patch provided in the bug
report but it cannot be accepted as-is. See
- http://curl.haxx.se/bug/view.cgi?id=2006544
+ http://curl.haxx.se/bug/view.cgi?id=748
55. libcurl fails to build with MIT Kerberos for Windows (KfW) due to KfW's
library header files exporting symbols/macros that should be kept private
protocol code. This should be very rare.
43. There seems to be a problem when connecting to the Microsoft telnet server.
- http://curl.haxx.se/bug/view.cgi?id=1720605
+ http://curl.haxx.se/bug/view.cgi?id=649
41. When doing an operation over FTP that requires the ACCT command (but not
when logging in), the operation will fail since libcurl doesn't detect this
and thus fails to issue the correct command:
- http://curl.haxx.se/bug/view.cgi?id=1693337
+ http://curl.haxx.se/bug/view.cgi?id=635
39. Steffen Rumler's Race Condition in Curl_proxyCONNECT:
http://curl.haxx.se/mail/lib-2007-01/0045.html
38. Kumar Swamy Bhatt's problem in ftp/ssl "LIST" operation:
http://curl.haxx.se/mail/lib-2007-01/0103.html
-37. Having more than one connection to the same host when doing NTLM
- authentication (with performs multiple "passes" and authenticates a
- connection rather than a HTTP request), and particularly when using the
- multi interface, there's a risk that libcurl will re-use a wrong connection
- when doing the different passes in the NTLM negotiation and thus fail to
- negotiate (in seemingly mysterious ways).
-
35. Both SOCKS5 and SOCKS4 proxy connections are done blocking, which is very
bad when used with the multi interface.
34. The SOCKS4 connection codes don't properly acknowledge (connect) timeouts.
Also see #12. According to bug #1556528, even the SOCKS5 connect code does
- not do it right: http://curl.haxx.se/bug/view.cgi?id=1556528,
+ not do it right: http://curl.haxx.se/bug/view.cgi?id=604
31. "curl-config --libs" will include details set in LDFLAGS when configure is
run that might be needed only for building libcurl. Further, curl-config
--cflags suffers from the same effects with CFLAGS/CPPFLAGS.
-30. You need to use -g to the command line tool in order to use RFC2732-style
- IPv6 numerical addresses in URLs.
-
-29. IPv6 URLs with zone ID is not nicely supported.
- http://www.ietf.org/internet-drafts/draft-fenner-literal-zone-02.txt (expired)
- specifies the use of a plus sign instead of a percent when specifying zone
- IDs in URLs to get around the problem of percent signs being
- special. According to the reporter, Firefox deals with the URL _with_ a
- percent letter (which seems like a blatant URL spec violation).
- libcurl supports zone IDs where the percent sign is URL-escaped (i.e. %25).
-
- See http://curl.haxx.se/bug/view.cgi?id=1371118
-
26. NTLM authentication using SSPI (on Windows) when (lib)curl is running in
"system context" will make it use wrong(?) user name - at least when compared
- to what winhttp does. See http://curl.haxx.se/bug/view.cgi?id=1281867
+ to what winhttp does. See http://curl.haxx.se/bug/view.cgi?id=535
23. SOCKS-related problems:
- A) libcurl doesn't support SOCKS for IPv6.
B) libcurl doesn't support FTPS over a SOCKS proxy.
E) libcurl doesn't support active FTP over a SOCKS proxy
We probably have even more bugs and lack of features when a SOCKS proxy is
used.
-22. Sending files to a FTP server using curl on VMS, might lead to curl
- complaining on "unaligned file size" on completion. The problem is related
- to VMS file structures and the perceived file sizes stat() returns. A
- possible fix would involve sending a "STRU VMS" command.
- http://curl.haxx.se/bug/view.cgi?id=1156287
-
21. FTP ASCII transfers do not follow RFC959. They don't convert the data
accordingly (not for sending nor for receiving). RFC 959 section 3.1.1.1
clearly describes how this should be done:
be to use a data structure other than a plain C string, one that can handle
embedded NUL characters. From a practical standpoint, most FTP servers
would not meaningfully support NUL characters within RFC 959 <string>,
- anyway (e.g., UNIX pathnames may not contain NUL).
+ anyway (e.g., Unix pathnames may not contain NUL).
14. Test case 165 might fail on a system which has libidn present, but with an
old iconv version (2.1.3 is a known bad version), since it doesn't recognize
acknowledged after the actual TCP connect (during the SOCKS "negotiate"
phase).
-10. To get HTTP Negotiate authentication to work fine, you need to provide a
- (fake) user name (this concerns both curl and the lib) because the code
- wrongly only considers authentication if there's a user name provided.
- http://curl.haxx.se/bug/view.cgi?id=1004841. How?
+10. To get HTTP Negotiate (SPNEGO) authentication to work fine, you need to
+ provide a (fake) user name (this concerns both curl and the lib) because the
+ code wrongly only considers authentication if there's a user name provided.
+ http://curl.haxx.se/bug/view.cgi?id=440 How?
http://curl.haxx.se/mail/lib-2004-08/0182.html
8. Doing resumed upload over HTTP does not work with '-C -', because curl
projects / external / curl.git / blobdiff