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330 lines
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<HTML>
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<BODY>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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error codes in libcurl
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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This man page includes most, if not all, available error
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codes in libcurl. Why they occur and possibly what you
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can do to fix the problem.
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</PRE>
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<H2>CURLcode</H2><PRE>
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Almost all "easy" interface functions return a CURLcode
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error code. No matter what, using <I>CURLOPT</I><B>_</B><I>ERRORBUFFER</I> is a
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good idea as it will give you a human readable error
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string that may offer more details about the error cause
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than just the error code does.
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This man page is meant to describe libcurl 7.9.6 and
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later. Earlier versions might have had quirks not men-
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tioned here.
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CURLcode is one of the following:
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<B>CURLE_OK</B> <B>(0)</B>
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All fine. Proceed as usual.
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<B>CURLE_UNSUPPORTED_PROTOCOL</B> <B>(1)</B>
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The URL you passed to libcurl used a protocol that
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this libcurl does not support. The support might be
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a compile-time option that you didn't use, it can be
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a misspelled protocol string or just a protocol
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libcurl has no code for.
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<B>CURLE_FAILED_INIT</B> <B>(2)</B>
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Very early initialization code failed. This is
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likely to be an internal error or problem.
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<B>CURLE_URL_MALFORMAT</B> <B>(3)</B>
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The URL was not properly formatted.
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<B>CURLE_URL_MALFORMAT_USER</B> <B>(4)</B>
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URL user malformatted. The user-part of the URL syn-
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tax was not correct.
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<B>CURLE_COULDNT_RESOLVE_PROXY</B> <B>(5)</B>
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Couldn't resolve proxy. The given proxy host could
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not be resolved.
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<B>CURLE_COULDNT_RESOLVE_HOST</B> <B>(6)</B>
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Couldn't resolve host. The given remote host was not
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resolved.
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<B>CURLE_COULDNT_CONNECT</B> <B>(7)</B>
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Failed to connect() to host or proxy.
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After connecting to a FTP server, libcurl expects to
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get a certain reply back. This error code implies
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that it god a strange or bad reply. The given remote
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server is probably not an OK FTP server.
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<B>CURLE_FTP_ACCESS_DENIED</B> <B>(9)</B>
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We were denied access when trying to login to an FTP
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server or when trying to change working directory to
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the one given in the URL.
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<B>CURLE_FTP_USER_PASSWORD_INCORRECT</B> <B>(10)</B>
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The username and/or the password were incorrect when
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trying to login to an FTP server.
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<B>CURLE_FTP_WEIRD_PASS_REPLY</B> <B>(11)</B>
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After having sent the FTP password to the server,
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libcurl expects a proper reply. This error code
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indicates that an unexpected code was returned.
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<B>CURLE_FTP_WEIRD_USER_REPLY</B> <B>(12)</B>
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After having sent user name to the FTP server,
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libcurl expects a proper reply. This error code
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indicates that an unexpected code was returned.
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<B>CURLE_FTP_WEIRD_PASV_REPLY</B> <B>(13)</B>
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libcurl failed to get a sensible result back from
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the server as a response to either a PASV or a EPSV
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command. The server is flawed.
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<B>CURLE_FTP_WEIRD_227_FORMAT</B> <B>(14)</B>
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FTP servers return a 227-line as a response to a
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PASV command. If libcurl fails to parse that line,
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this return code is passed back.
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<B>CURLE_FTP_CANT_GET_HOST</B> <B>(15)</B>
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An internal failure to lookup the host used for the
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new connection.
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<B>CURLE_FTP_CANT_RECONNECT</B> <B>(16)</B>
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A bad return code on either PASV or EPSV was sent by
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the FTP server, preventing libcurl from being able
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to continue.
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<B>CURLE_FTP_COULDNT_SET_BINARY</B> <B>(17)</B>
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Received an error when trying to set the transfer
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mode to binary.
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<B>CURLE_PARTIAL_FILE</B> <B>(18)</B>
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A file transfer was shorter or larger than expected.
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This happens when the server first reports an
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expected transfer size, and then delivers data that
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doesn't match the previously given size.
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This was either a weird reply to a 'RETR' command or
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a zero byte transfer complete.
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<B>CURLE_FTP_WRITE_ERROR</B> <B>(20)</B>
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After a completed file transfer, the FTP server did
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not respond a proper
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<B>CURLE_FTP_QUOTE_ERROR</B> <B>(21)</B>
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When sending custom "QUOTE" commands to the remote
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server, one of the commands returned an error code
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that was 400 or higher.
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<B>CURLE_HTTP_RETURNED_ERROR</B> <B>(22)</B>
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This is returned if CURLOPT_FAILONERROR is set TRUE
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and the HTTP server returns an error code that is >=
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400.
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<B>CURLE_WRITE_ERROR</B> <B>(23)</B>
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An error occurred when writing received data to a
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local file, or an error was returned to libcurl from
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a write callback.
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<B>CURLE_MALFORMAT_USER</B> <B>(24)</B>
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Malformat user. User name badly specified. *Not cur-
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rently used*
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<B>CURLE_FTP_COULDNT_STOR_FILE</B> <B>(25)</B>
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FTP couldn't STOR file. The server denied the STOR
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operation. The error buffer usually contains the
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server's explanation to this.
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<B>CURLE_READ_ERROR</B> <B>(26)</B>
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There was a problem reading a local file or an error
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returned by the read callback.
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<B>CURLE_OUT_OF_MEMORY</B> <B>(27)</B>
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Out of memory. A memory allocation request failed.
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This is serious badness and things are severly
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screwed up if this ever occur.
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<B>CURLE_OPERATION_TIMEOUTED</B> <B>(28)</B>
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Operation timeout. The specified time-out period was
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reached according to the conditions.
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<B>CURLE_FTP_COULDNT_SET_ASCII</B> <B>(29)</B>
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libcurl failed to set ASCII transfer type (TYPE A).
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<B>CURLE_FTP_PORT_FAILED</B> <B>(30)</B>
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The FTP PORT command returned error. This mostly
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happen when you haven't specified a good enough
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address for libcurl to use. See <I>CURLOPT</I><B>_</B><I>FTPPORT</I>.
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The FTP REST command returned error. This should
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never happen if the server is sane.
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<B>CURLE_FTP_COULDNT_GET_SIZE</B> <B>(32)</B>
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The FTP SIZE command returned errror. SIZE is not a
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kosher FTP command, it is an extension and not all
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servers support it. This is not a surprising error.
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<B>CURLE_HTTP_RANGE_ERROR</B> <B>(33)</B>
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The HTTP server does not support or accept range
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requests.
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<B>CURLE_HTTP_POST_ERROR</B> <B>(34)</B>
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This is an odd error that mainly occurs due to
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internal confusion.
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<B>CURLE_SSL_CONNECT_ERROR</B> <B>(35)</B>
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A problem occured somewhere in the SSL/TLS hand-
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shake. You really want the error buffer and read the
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message there as it pinpoints the problem slightly
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more. Could be certificates (file formats, paths,
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permissions), passwords, and others.
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<B>CURLE_FTP_BAD_DOWNLOAD_RESUME</B> <B>(36)</B>
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Attempting FTP resume beyond file size.
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<B>CURLE_FILE_COULDNT_READ_FILE</B> <B>(37)</B>
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A file given with FILE:// couldn't be opened. Most
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likely because the file path doesn't identify an
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existing file. Did you check file permissions?
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<B>CURLE_LDAP_CANNOT_BIND</B> <B>(38)</B>
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LDAP cannot bind. LDAP bind operation failed.
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<B>CURLE_LDAP_SEARCH_FAILED</B> <B>(39)</B>
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LDAP search failed.
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<B>CURLE_LIBRARY_NOT_FOUND</B> <B>(40)</B>
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Library not found. The LDAP library was not found.
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<B>CURLE_FUNCTION_NOT_FOUND</B> <B>(41)</B>
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Function not found. A required LDAP function was not
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found.
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<B>CURLE_ABORTED_BY_CALLBACK</B> <B>(42)</B>
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Aborted by callback. A callback returned "abort" to
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libcurl.
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<B>CURLE_BAD_FUNCTION_ARGUMENT</B> <B>(43)</B>
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Internal error. A function was called with a bad
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parameter.
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Internal error. A function was called in a bad
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order.
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<B>CURLE_HTTP_PORT_FAILED</B> <B>(45)</B>
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Interface error. A specified outgoing interface
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could not be used. Set which interface to use for
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outgoing connections' source IP address with CUR-
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LOPT_INTERFACE.
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<B>CURLE_BAD_PASSWORD_ENTERED</B> <B>(46)</B>
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Bad password entered. An error was signaled when the
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password was entered. This can also be the result of
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a "bad password" returned from a specified password
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callback.
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<B>CURLE_TOO_MANY_REDIRECTS</B> <B>(47)</B>
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Too many redirects. When following redirects,
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libcurl hit the maximum amount. Set your limit with
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CURLOPT_MAXREDIRS.
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<B>CURLE_UNKNOWN_TELNET_OPTION</B> <B>(48)</B>
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An option set with CURLOPT_TELNETOPTIONS was not
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recognized/known. Refer to the appropriate documen-
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tation.
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<B>CURLE_TELNET_OPTION_SYNTAX</B> <B>(49)</B>
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A telnet option string was Illegally formatted.
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<B>CURLE_OBSOLETE</B> <B>(50)</B>
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This is not an error. This used to be another error
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code in an old libcurl version and is currently
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unused.
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<B>CURLE_SSL_PEER_CERTIFICATE</B> <B>(51)</B>
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The remote server's SSL certificate was deemed not
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OK.
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<B>CURLE_GOT_NOTHING</B> <B>(52)</B>
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Nothing was returned from the server, and under the
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circumstances, getting nothing is considered an
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error.
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<B>CURLE_SSL_ENGINE_NOTFOUND</B> <B>(53)</B>
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The specified crypto engine wasn't found.
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<B>CURLE_SSL_ENGINE_SETFAILED</B> <B>(54)</B>
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Failed setting the selected SSL crypto engine as
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default!
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<B>CURLE_SEND_ERROR</B> <B>(55)</B>
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Failed sending network data.
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Failure with receiving network data.
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<B>CURL_LAST</B>
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This is not an error, but in the curl/curl.h file
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this can be used to know how many existing error
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codes there are.
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</PRE>
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<H2>CURLMcode</H2><PRE>
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This is the generic return code used by functions in the
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libcurl multi interface.
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</PRE>
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<HR>
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<ADDRESS>
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Man(1) output converted with
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<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
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</ADDRESS>
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</BODY>
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</HTML>
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