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(http://curl.haxx.se/bug/view.cgi?id=1603712) (known bug #36) --limit-rate (CURLOPT_MAX_SEND_SPEED_LARGE and CURLOPT_MAX_RECV_SPEED_LARGE) are broken on Windows (since 7.16.0, but that's when they were introduced as previous to that the limiting logic was made in the application only and not in the library). It was actually also broken on select()-based systems (as apposed to poll()) but we haven't had any such reports. We now use select(), Sleep() or delay() properly to sleep a while without waiting for anything input or output when the rate limiting is activated with the easy interface.
139 lines
7.3 KiB
Plaintext
139 lines
7.3 KiB
Plaintext
These are problems known to exist at the time of this release. Feel free to
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join in and help us correct one or more of these! Also be sure to check the
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changelog of the current development status, as one or more of these problems
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may have been fixed since this was written!
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37. Having more than one connection to the same host when doing NTLM
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authentication (with performs multiple "passes" and authenticates a
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connection rather than a HTTP request), and particularly when using the
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multi interface, there's a risk that libcurl will re-use a wrong connection
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when doing the different passes in the NTLM negotiation and thus fail to
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negotiate (in seemingly mysterious ways).
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35. Both SOCKS5 and SOCKS4 proxy connections are done blocking, which is very
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bad when used with the multi interface.
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34. The SOCKS4 connection codes don't properly acknowledge (connect) timeouts.
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Also see #12. According to bug #1556528, even the SOCKS5 connect code does
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not do it right: http://curl.haxx.se/bug/view.cgi?id=1556528,
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33. Doing multi-pass HTTP authentication on a non-default port does not work.
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This happens because the multi-pass code abuses the redirect following code
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for doing multiple requests, and when we following redirects to an absolute
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URL we must use the newly specified port and not the one specified in the
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original URL. A proper fix to this would need to separate the negotiation
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"redirect" from an actual redirect.
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32. (At least on Windows) If libcurl is built with c-ares and there's no DNS
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server configured in the system, the ares_init() call fails and thus
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curl_easy_init() fails as well. This causes weird effects for people who use
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numerical IP addresses only.
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31. "curl-config --libs" will include details set in LDFLAGS when configure is
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run that might be needed only for building libcurl. Similarly, it might
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include options that perhaps aren't suitable both for static and dynamic
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linking. Further, curl-config --cflags suffers from the same effects with
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CFLAGS/CPPFLAGS.
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30. You need to use -g to the command line tool in order to use RFC2732-style
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IPv6 numerical addresses in URLs.
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29. IPv6 URLs with zone ID is not supported.
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http://www.ietf.org/internet-drafts/draft-fenner-literal-zone-02.txt
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specifies the use of a plus sign instead of a percent when specifying zone
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IDs in URLs to get around the problem of percent signs being
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special. According to the reporter, Firefox deals with the URL _with_ a
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percent letter (which seems like a blatant URL spec violation).
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See http://curl.haxx.se/bug/view.cgi?id=1371118
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26. NTLM authentication using SSPI (on Windows) when (lib)curl is running in
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"system context" will make it use wrong(?) user name - at least when compared
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to what winhttp does. See http://curl.haxx.se/bug/view.cgi?id=1281867
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23. We don't support SOCKS for IPv6. We don't support FTPS over a SOCKS proxy.
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We don't have any test cases for SOCKS proxy. We probably have even more
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bugs and lack of features when a SOCKS proxy is used. And there seem to be a
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problem with SOCKS when doing FTP: See
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http://curl.haxx.se/bug/view.cgi?id=1371540
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22. Sending files to a FTP server using curl on VMS, might lead to curl
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complaining on "unaligned file size" on completion. The problem is related
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to VMS file structures and the perceived file sizes stat() returns. A
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possible fix would involve sending a "STRU VMS" command.
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http://curl.haxx.se/bug/view.cgi?id=1156287
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21. FTP ASCII transfers do not follow RFC959. They don't convert the data
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accordingly (not for sending nor for receiving). RFC 959 section 3.1.1.1
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clearly describes how this should be done:
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The sender converts the data from an internal character representation to
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the standard 8-bit NVT-ASCII representation (see the Telnet
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specification). The receiver will convert the data from the standard
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form to his own internal form.
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Since 7.15.4 at least line endings are converted.
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16. FTP URLs passed to curl may contain NUL (0x00) in the RFC 1738 <user>,
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<password>, and <fpath> components, encoded as "%00". The problem is that
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curl_unescape does not detect this, but instead returns a shortened C
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string. From a strict FTP protocol standpoint, NUL is a valid character
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within RFC 959 <string>, so the way to handle this correctly in curl would
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be to use a data structure other than a plain C string, one that can handle
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embedded NUL characters. From a practical standpoint, most FTP servers
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would not meaningfully support NUL characters within RFC 959 <string>,
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anyway (e.g., UNIX pathnames may not contain NUL).
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14. Test case 165 might fail on system which has libidn present, but with an
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old iconv version (2.1.3 is a known bad version), since it doesn't recognize
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the charset when named ISO8859-1. Changing the name to ISO-8859-1 makes the
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test pass, but instead makes it fail on Solaris hosts that use its native
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iconv.
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13. curl version 7.12.2 fails on AIX if compiled with --enable-ares.
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The workaround is to combine --enable-ares with --disable-shared
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12. When connecting to a SOCKS proxy, the (connect) timeout is not properly
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acknowledged after the actual TCP connect (during the SOCKS "negotiate"
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phase).
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11. Using configure --disable-[protocol] may cause 'make test' to fail for
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tests using the disabled protocol(s).
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10. To get HTTP Negotiate authentication to work fine, you need to provide a
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(fake) user name (this concerns both curl and the lib) because the code
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wrongly only considers authentication if there's a user name provided.
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http://curl.haxx.se/bug/view.cgi?id=1004841. How?
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http://curl.haxx.se/mail/lib-2004-08/0182.html
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8. Doing resumed upload over HTTP does not work with '-C -', because curl
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doesn't do a HEAD first to get the initial size. This needs to be done
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manually for HTTP PUT resume to work, and then '-C [index]'.
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7. CURLOPT_USERPWD and CURLOPT_PROXYUSERPWD have no way of providing user names
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that contain a colon. This can't be fixed easily in a backwards compatible
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way without adding new options (and then, they should most probably allow
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setting user name and password separately).
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6. libcurl ignores empty path parts in FTP URLs, whereas RFC1738 states that
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such parts should be sent to the server as 'CWD ' (without an argument).
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The only exception to this rule, is that we knowingly break this if the
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empty part is first in the path, as then we use the double slashes to
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indicate that the user wants to reach the root dir (this exception SHALL
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remain even when this bug is fixed).
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5. libcurl doesn't treat the content-length of compressed data properly, as
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it seems HTTP servers send the *uncompressed* length in that header and
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libcurl thinks of it as the *compressed* length. Some explanations are here:
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http://curl.haxx.se/mail/lib-2003-06/0146.html
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2. If a HTTP server responds to a HEAD request and includes a body (thus
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violating the RFC2616), curl won't wait to read the response but just stop
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reading and return back. If a second request (let's assume a GET) is then
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immediately made to the same server again, the connection will be re-used
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fine of course, and the second request will be sent off but when the
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response is to get read, the previous response-body is what curl will read
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and havoc is what happens.
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More details on this is found in this libcurl mailing list thread:
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http://curl.haxx.se/mail/lib-2002-08/0000.html
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