.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) 1998 - 2016, 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 https://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_CONV_TO_NETWORK_FUNCTION 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options" .SH NAME CURLOPT_CONV_TO_NETWORK_FUNCTION \- convert data to network from host encoding .SH SYNOPSIS .nf #include <curl/curl.h> CURLcode conv_callback(char *ptr, size_t length); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONV_TO_NETWORK_FUNCTION, conv_callback); .SH DESCRIPTION Pass a pointer to your callback function, which should match the prototype shown above. Applies to non-ASCII platforms. \fIcurl_version_info(3)\fP will return the CURL_VERSION_CONV feature bit set if this option is provided. The data to be converted is in a buffer pointed to by the \fIptr\fP parameter. The amount of data to convert is indicated by the \fIlength\fP parameter. The converted data overlays the input data in the buffer pointed to by the ptr parameter. \fICURLE_OK\fP must be returned upon successful conversion. A CURLcode return value defined by curl.h, such as \fICURLE_CONV_FAILED\fP, should be returned if an error was encountered. \fBCURLOPT_CONV_TO_NETWORK_FUNCTION\fP converts from host encoding to the network encoding. It is used when commands or ASCII data are sent over the network. If you set a callback pointer to NULL, or don't set it at all, the built-in libcurl iconv functions will be used. If HAVE_ICONV was not defined when libcurl was built, and no callback has been established, conversion will return the CURLE_CONV_REQD error code. If HAVE_ICONV is defined, CURL_ICONV_CODESET_OF_HOST must also be defined. For example: \&#define CURL_ICONV_CODESET_OF_HOST "IBM-1047" The iconv code in libcurl will default the network and UTF8 codeset names as follows: \&#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1" \&#define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8" You will need to override these definitions if they are different on your system. .SH DEFAULT NULL .SH PROTOCOLS FTP, SMTP, IMAP, POP3 .SH EXAMPLE TODO .SH AVAILABILITY Available only if \fBCURL_DOES_CONVERSIONS\fP was defined when libcurl was built. .SH RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. .SH "SEE ALSO" .BR CURLOPT_CONV_FROM_NETWORK_FUNCTION "(3), " CURLOPT_CONV_FROM_UTF8_FUNCTION "(3), "