Manpages - CURLOPT_TFTP_NO_OPTIONS.3

CURLOPT_TFTP_NO_OPTIONS - send no TFTP options requests

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff);

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.

0

TFTP

  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);
  }

Added in 7.48.0

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

*CURLOPT_TFTP_BLKSIZE*(3),