CURLOPT_TFTP_NO_OPTIONS(3)                            Library Functions Manual

NAME
       CURLOPT_TFTP_NO_OPTIONS - send no 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 RFC 2347, RFC
       2348 and RFC 2349 from read and write requests.

       This option improves interoperability with 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
       This functionality affects tftp only

EXAMPLE
       size_t write_callback(char *ptr, size_t size, size_t nmemb, void *fp)
       {
         return fwrite(ptr, size, nmemb, (FILE *)fp);
       }

       int main(void)
       {
         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 curl 7.48.0

RETURN VALUE
       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).

SEE ALSO
       CURLOPT_TFTP_BLKSIZE(3)

libcurl                           2025-02-13        CURLOPT_TFTP_NO_OPTIONS(3)