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.TH CURLOPT_TFTP_NO_OPTIONS 3 "November 04, 2020" "libcurl 7.77.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_TFTP_NO_OPTIONS \- Do not send TFTP options requests.
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff);
.SH DESCRIPTION
Set \fIonoff\fP 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
\fICURLOPT_TFTP_BLKSIZE(3)\fP is ignored.
.SH DEFAULT
0
.SH PROTOCOLS
TFTP
.SH EXAMPLE
.nf
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);
}
.fi
.SH AVAILABILITY
Added in 7.48.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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