CURLOPT_CHUNK_END_FUNCTION - callback after a transfer with FTP wildcard match

Added in curl 7.21.0

NULL

Pass a pointer to your callback function, which should match the prototype shown above. This function gets called by libcurl as soon as a part of the stream has been transferred (or skipped). Return CURL_CHUNK_END_FUNC_OK if everything is fine or CURL_CHUNK_END_FUNC_FAIL to tell the lib to stop if some error occurred.

#include <stdio.h> struct callback_data { FILE *output; }; static long file_is_downloaded(void *ptr) { struct callback_data *data = ptr; if(data->output) { fclose(data->output); data->output = 0x0; } return CURL_CHUNK_END_FUNC_OK; } int main() { /* data for callback */ struct callback_data callback_info; CURL *curl = curl_easy_init(); curl_easy_setopt(curl, CURLOPT_CHUNK_END_FUNCTION, file_is_downloaded); curl_easy_setopt(curl, CURLOPT_CHUNK_DATA, &callback_info); }

CURLOPT_CHUNK_END_FUNCTION - callback after a transfer with FTP wildcard match

This functionality affects ftp only

curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

CURLOPT_CHUNK_BGN_FUNCTION(3), CURLOPT_WILDCARDMATCH(3) libcurl 2025-06-16 CURLOPT_CHUNK_END_FUNCTION(3)

#include <curl/curl.h> long chunk_end_callback(void *ptr); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CHUNK_END_FUNCTION, chunk_end_callback);