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//proc/self/root/opt/curlssl/share/man/man3/CURLOPT_CHUNK_BGN_FUNCTION.3
.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. .\" * .\" * This software is licensed as described in the file COPYING, which .\" * you should have received as part of this distribution. The terms .\" * are also available at http://curl.haxx.se/docs/copyright.html. .\" * .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell .\" * copies of the Software, and permit persons to whom the Software is .\" * furnished to do so, under the terms of the COPYING file. .\" * .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY .\" * KIND, either express or implied. .\" * .\" ************************************************************************** .\" .TH CURLOPT_CHUNK_BGN_FUNCTION 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options" .SH NAME CURLOPT_CHUNK_BGN_FUNCTION \- callback before a transfer with FTP wildcardmatch .SH SYNOPSIS .nf #include <curl/curl.h> long chunk_bgn_callback(const void *transfer_info, void *ptr, int remains); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CHUNK_BGN_FUNCTION, chunk_bgn_callback); .SH DESCRIPTION Pass a pointer to your callback function, which should match the prototype shown above. This callback function gets called by libcurl before a part of the stream is going to be transferred (if the transfer supports chunks). The \fItransfer_info\fP pointer will point to a struct curl_fileinfo with details about the file that is about to get transferred. This callback makes sense only when using the \fICURLOPT_WILDCARDMATCH(3)\fP option for now. The target of transfer_info parameter is a "feature depended" structure. For the FTP wildcard download, the target is curl_fileinfo structure (see \fIcurl/curl.h\fP). The parameter \fIptr\fP is a pointer given by \fICURLOPT_CHUNK_DATA(3)\fP. The parameter remains contains number of chunks remaining per the transfer. If the feature is not available, the parameter has zero value. Return \fICURL_CHUNK_BGN_FUNC_OK\fP if everything is fine, \fICURL_CHUNK_BGN_FUNC_SKIP\fP if you want to skip the concrete chunk or \fICURL_CHUNK_BGN_FUNC_FAIL\fP to tell libcurl to stop if some error occurred. .SH DEFAULT NULL .SH PROTOCOLS FTP .SH EXAMPLE TODO .SH AVAILABILITY This was added in 7.21.0 .SH RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. .SH "SEE ALSO" .BR CURLOPT_CHUNK_END_FUNCTION "(3), " CURLOPT_WILDCARDMATCH "(3), "
