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curl_mime_filedata(3) Library Functions Manual curl_mime_filedata(3) NAME curl_mime_filedata - set a mime part's body data from a file contents SYNOPSIS #include <curl/curl.h> CURLcode curl_mime_filedata(curl_mimepart *part, const char *filename); DESCRIPTION curl_mime_filedata(3) sets a mime part's body content from the named file's contents. This is an alternative to curl_mime_data(3) for set- ting data to a mime part. part is the part's to assign contents to. filename points to the null-terminated file's path name. The pointer can be NULL to detach the previous part contents settings. Filename storage can be safely be reused after this call. As a side effect, the part's remote filename is set to the base name of the given filename if it is a valid named file. This can be undone or overridden by a subsequent call to curl_mime_filename(3). The contents of the file is read during the file transfer in a stream- ing manner to allow huge files to get transferred without using much memory. It therefore requires that the file is kept intact during the entire request. If the file size cannot be determined before actually reading it (such as for a character device or named pipe), the whole mime structure con- taining the part is transferred using chunks by HTTP but is rejected by IMAP. Setting a part's contents multiple times is valid: only the value set by the last call is retained. PROTOCOLS This functionality affects http, imap and smtp EXAMPLE int main(void) { curl_mime *mime; curl_mimepart *part; CURL *curl = curl_easy_init(); if(curl) { /* create a mime handle */ mime = curl_mime_init(curl); /* add a part */ part = curl_mime_addpart(mime); /* send data from this file */ curl_mime_filedata(part, "image.png"); /* set name */ curl_mime_name(part, "data"); } } AVAILABILITY Added in curl 7.56.0 RETURN VALUE This function returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). If CURLOPT_ERRORBUFFER(3) was set with curl_easy_setopt(3) there can be an error message stored in the error buffer when non-zero is returned. CURLE_READ_ERROR is only an indication that the file is not yet read- able: it can be safely ignored at this time, but the file must be made readable before the pertaining easy handle is performed. SEE ALSO curl_mime_addpart(3), curl_mime_data(3), curl_mime_filename(3), curl_mime_name(3) libcurl 2025-06-03 curl_mime_filedata(3)
NAME | SYNOPSIS | DESCRIPTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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