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opts: 4 more options with stand-alone man pages
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docs/libcurl/opts/CURLOPT_IOCTLDATA.3
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docs/libcurl/opts/CURLOPT_IOCTLDATA.3
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at http://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_IOCTLDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_IOCTLDATA \- custom pointer passed to I/O callback
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer);
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.SH DESCRIPTION
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Pass the \fIpointer\fP that will be untouched by libcurl and passed as the 3rd
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argument in the ioctl callback set with \fICURLOPT_IOCTLFUNCTION(3)\fP.
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.SH DEFAULT
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By default, the value of this parameter is NULL.
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.SH PROTOCOLS
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Used with HTTP
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Added in 7.12.3
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_IOCTLFUNCTION "(3), " CURLOPT_SEEKFUNCTION "(3), "
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43
docs/libcurl/opts/CURLOPT_SEEKDATA.3
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docs/libcurl/opts/CURLOPT_SEEKDATA.3
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at http://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_SEEKDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_SEEKDATA \- custom pointer passed to the seek callback
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, void *pointer);
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.SH DESCRIPTION
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Data \fIpointer\fP to pass to the seek callback function. If you use the
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\fICURLOPT_SEEKFUNCTION(3)\fP option, this is the pointer you'll get as
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input.
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.SH DEFAULT
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If you don't set this, NULL is passed to the callback.
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.SH PROTOCOLS
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HTTP, FTP, SFTP
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.SH EXAMPLE
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.SH AVAILABILITY
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Added in 7.18.0
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.SH RETURN VALUE
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.SH "SEE ALSO"
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.BR CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), "
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73
docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3
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73
docs/libcurl/opts/CURLOPT_SEEKFUNCTION.3
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at http://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_SEEKFUNCTION 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_SEEKFUNCTION \- user callback for seeking in input stream
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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/* These are the return codes for the seek callbacks */
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#define CURL_SEEKFUNC_OK 0
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#define CURL_SEEKFUNC_FAIL 1 /* fail the entire transfer */
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#define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
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libcurl might try other means instead */
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int seek_callback(void *userp, curl_off_t offset, int origin);
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKFUNCTION, seek_callback);
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.SH DESCRIPTION
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Pass a pointer to your callback function, which should match the prototype
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shown above.
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This function gets called by libcurl to seek to a certain position in the
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input stream and can be used to fast forward a file in a resumed upload
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(instead of reading all uploaded bytes with the normal read
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function/callback). It is also called to rewind a stream when doing a HTTP PUT
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or POST with a multi-pass authentication method. The function shall work like
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fseek(3) or lseek(3) and it gets SEEK_SET, SEEK_CUR or SEEK_END as argument
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for \fIorigin\fP, although libcurl currently only passes SEEK_SET.
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\fIuserp\fP is the pointer you set with \fICURLOPT_SEEKDATA(3)\fP.
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The callback function must return \fICURL_SEEKFUNC_OK\fP on success,
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\fICURL_SEEKFUNC_FAIL\fP to cause the upload operation to fail or
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\fICURL_SEEKFUNC_CANTSEEK\fP to indicate that while the seek failed, libcurl
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is free to work around the problem if possible. The latter can sometimes be
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done by instead reading from the input or similar.
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If you forward the input arguments directly to fseek(3) or lseek(3), note that
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the data type for \fIoffset\fP is not the same as defined for curl_off_t on
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many systems!
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.SH DEFAULT
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By default, this is NULL and unused.
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.SH PROTOCOLS
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HTTP, FTP, SFTP
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Added in 7.18.0
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_SEEKDATA "(3), " CURLOPT_IOCTLFUNCTION "(3), "
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84
docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
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84
docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at http://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_SOCKOPTFUNCTION 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_SOCKOPTFUNCTION \- set callback for setting socket options
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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typedef enum {
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CURLSOCKTYPE_IPCXN, /* socket created for a specific IP connection */
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CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
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CURLSOCKTYPE_LAST /* never use */
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} curlsocktype;
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#define CURL_SOCKOPT_OK 0
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#define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
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CURLE_ABORTED_BY_CALLBACK */
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#define CURL_SOCKOPT_ALREADY_CONNECTED 2
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int sockopt_callback(void *clientp,
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curl_socket_t curlfd,
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curlsocktype purpose);
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
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.SH DESCRIPTION
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Pass a pointer to your callback function, which should match the prototype
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shown above.
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When set, this callback function gets called by libcurl when the socket has
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been created, but before the connect call to allow applications to change
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specific socket options. The callback's \fIpurpose\fP argument identifies the
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exact purpose for this particular socket:
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\fICURLSOCKTYPE_IPCXN\fP for actively created connections or since 7.28.0
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\fICURLSOCKTYPE_ACCEPT\fP for FTP when the connection was setup with PORT/EPSV
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(in earlier versions these sockets weren't passed to this callback).
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Future versions of libcurl may support more purposes. libcurl passes the newly
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created socket descriptor to the callback so additional setsockopt() calls can
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be done at the user's discretion. Return \fICURL_SOCKOPT_OK\fP from the
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callback on success. Return \fICURL_SOCKOPT_ERROR\fP from the callback
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function to signal an unrecoverable error to the library and it will close the
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socket and return \fICURLE_COULDNT_CONNECT\fP.
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Alternatively, the callback function can return
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\fICURL_SOCKOPT_ALREADY_CONNECTED\fP, to tell libcurl that the socket is
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already connected and then libcurl will not attempt to connect it. This allows
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an application to pass in an already connected socket with
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\fICURLOPT_OPENSOCKETFUNCTION(3)\fP and then have this function make libcurl
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not attempt to connect (again).
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.SH DEFAULT
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By default, this callback is NULL and unused.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Added in 7.16.0. The \fICURL_SOCKOPT_ALREADY_CONNECTED\fP return code was
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added in 7.21.5.
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.SH RETURN VALUE
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CURLE_OK
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.SH "SEE ALSO"
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.BR CURLOPT_SOCKOPTDATA "(3), " CURLOPT_OPENSOCKETFUNCTION "(3), "
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