Open zhang-huaimin opened 1 month ago
curl-rust is a thin wrapper over libcurl so generally examples out in the wild using the libcurl API in most any language should translate to some degree to curl-rust. (Note that the curl
command is a application that uses libcurl but adds its own code on top. curl-rust has no interaction with the curl
command.)
The curl
command actually has a neat trick to show you how one might achieve similar results / options as any given curl
command using libcurl by appending --libcurl
to the command. For example, curl -T file.txt http://example.com --libcurl -
will show you the following C code:
/********* Sample code generated by the curl command line tool **********
* All curl_easy_setopt() options are documented at:
* https://curl.se/libcurl/c/curl_easy_setopt.html
************************************************************************/
#include <curl/curl.h>
int main(int argc, char *argv[])
{
CURLcode ret;
CURL *hnd;
hnd = curl_easy_init();
curl_easy_setopt(hnd, CURLOPT_BUFFERSIZE, 102400L);
curl_easy_setopt(hnd, CURLOPT_URL, "http://example.com/file.txt");
curl_easy_setopt(hnd, CURLOPT_NOPROGRESS, 1L);
curl_easy_setopt(hnd, CURLOPT_UPLOAD, 1L);
curl_easy_setopt(hnd, CURLOPT_USERAGENT, "curl/8.2.1");
curl_easy_setopt(hnd, CURLOPT_MAXREDIRS, 50L);
curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, (long)CURL_HTTP_VERSION_2TLS);
curl_easy_setopt(hnd, CURLOPT_FTP_SKIP_PASV_IP, 1L);
curl_easy_setopt(hnd, CURLOPT_TCP_KEEPALIVE, 1L);
/* Here is a list of options the curl code used that cannot get generated
as source easily. You may choose to either not use them or implement
them yourself.
CURLOPT_WRITEDATA was set to an object pointer
CURLOPT_WRITEFUNCTION was set to a function pointer
CURLOPT_READDATA was set to an object pointer
CURLOPT_READFUNCTION was set to a function pointer
CURLOPT_SEEKDATA was set to an object pointer
CURLOPT_SEEKFUNCTION was set to a function pointer
CURLOPT_ERRORBUFFER was set to an object pointer
CURLOPT_STDERR was set to an object pointer
CURLOPT_HEADERFUNCTION was set to a function pointer
CURLOPT_HEADERDATA was set to an object pointer
*/
ret = curl_easy_perform(hnd);
curl_easy_cleanup(hnd);
hnd = NULL;
return (int)ret;
}
/**** End of sample code ****/
Usually to upload a file you'd open the file and then set CURLOPT_READFUNCTION
to a function that would read a chunk of the file and copy it into libcurl's upload buffer. One curl-rust wrapper for this option is read_function
.
Hello, I often use
curl -T file
inbash
to upload file, how should this be done inrust-curl
? Hope your reply, thanks!