1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLOPT_TFTP_NO_OPTIONS 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_TFTP_BLKSIZE (3) 9Protocol: 10 - TFTP 11--- 12 13# NAME 14 15CURLOPT_TFTP_NO_OPTIONS - send no TFTP options requests 16 17# SYNOPSIS 18 19~~~c 20#include <curl/curl.h> 21 22CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff); 23~~~ 24 25# DESCRIPTION 26 27Set *onoff* to 1L to exclude all TFTP options defined in RFC 2347, 28RFC 2348 and RFC 2349 from read and write requests. 29 30This option improves interoperability with legacy servers that do not 31acknowledge or properly implement TFTP options. When this option is used 32CURLOPT_TFTP_BLKSIZE(3) is ignored. 33 34# DEFAULT 35 360 37 38# EXAMPLE 39 40~~~c 41size_t write_callback(char *ptr, size_t size, size_t nmemb, void *fp) 42{ 43 return fwrite(ptr, size, nmemb, (FILE *)fp); 44} 45 46int main(void) 47{ 48 CURL *curl = curl_easy_init(); 49 if(curl) { 50 FILE *fp = fopen("foo.bin", "wb"); 51 if(fp) { 52 curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)fp); 53 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback); 54 55 curl_easy_setopt(curl, CURLOPT_URL, "tftp://example.com/foo.bin"); 56 57 /* do not send TFTP options requests */ 58 curl_easy_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L); 59 60 /* Perform the request */ 61 curl_easy_perform(curl); 62 63 fclose(fp); 64 } 65 curl_easy_cleanup(curl); 66 } 67} 68~~~ 69 70# AVAILABILITY 71 72Added in 7.48.0 73 74# RETURN VALUE 75 76Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 77