04-29-2013
Yes, curl has a -r option that is useful if you know the file size before starting the download.
Also, is it possible the 1% is arbitrary? Even if you don't know the file size before, for your test you could download say 1 MB or whatever you choose.
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LEARN ABOUT MOJAVE
curlopt_tftp_no_options
CURLOPT_TFTP_NO_OPTIONS(3) curl_easy_setopt options CURLOPT_TFTP_NO_OPTIONS(3)
NAME
CURLOPT_TFTP_NO_OPTIONS - Do not send TFTP options requests.
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff);
DESCRIPTION
Set onoff to 1L to exclude all TFTP options defined in RFC2347, RFC2348 and RFC2349 from read and write requests (RRQs/WRQs).
This option improves interop with some legacy servers that do not acknowledge or properly implement TFTP options. When this option is used
CURLOPT_TFTP_BLKSIZE(3) is ignored.
DEFAULT
0
PROTOCOLS
TFTP
EXAMPLE
size_t write_callback(char *ptr, size_t size, size_t nmemb, void *fp)
{
return fwrite(ptr, size, nmemb, (FILE *)fp);
}
CURL *curl = curl_easy_init();
if(curl) {
FILE *fp = fopen("foo.bin", "wb");
if(fp) {
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)fp);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
curl_easy_setopt(curl, CURLOPT_URL, "tftp://example.com/foo.bin");
/* do not send TFTP options requests */
curl_easy_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L);
/* Perform the request */
curl_easy_perform(curl);
fclose(fp);
}
curl_easy_cleanup(curl);
}
AVAILABILITY
Added in 7.48.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
libcurl 7.54.0 April 06, 2016 CURLOPT_TFTP_NO_OPTIONS(3)