**************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, 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.
*
**************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, 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.
*
**************************************************************************
curl_formget 3 "September 02, 2017" "libcurl 7.67.0" "libcurl Manual"
NAME
curl_formget - serialize a previously built multipart/formdata HTTP POST chain
SYNOPSIS
#include <curl/curl.h> int curl_formget(struct curl_httppost * form, void *userp, curl_formget_callback append );DESCRIPTIONcurl_formget() is used to serialize data previously built/appended with curl_formadd(3). Accepts a void pointer as second argument named userp which will be passed as the first argument to the curl_formget_callback function. "typedef size_t (*curl_formget_callback)(void *" userp, " const char *" buf, " size_t " len ");" The curl_formget_callback will be executed for each part of the HTTP POST chain. The character buffer passed to the callback must not be freed. The callback should return the buffer length passed to it on success. If the CURLFORM_STREAM option is used in the formpost, it will prevent curl_formget(3) from working until you've performed the actual HTTP request as only then will libcurl get the actual read callback to use!RETURN VALUE0 means everything was ok, non-zero means an error occurredEXAMPLEsize_t print_httppost_callback(void *arg, const char *buf, size_t len) { fwrite(buf, len, 1, stdout); (*(size_t *) arg) += len; return len; } size_t print_httppost(struct curl_httppost *post) { size_t total_size = 0; if(curl_formget(post, &total_size, print_httppost_callback)) { return (size_t) -1; } return total_size; }AVAILABILITYThis function was added in libcurl 7.15.5. The form API is deprecated in libcurl 7.56.0."SEE ALSO"curl_formadd "(3), " curl_mime_init "(3)"