CURLOPT_TFTP_BLKSIZE

Section: curl_easy_setopt options (3)
Updated: November 04, 2020
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NAME

CURLOPT_TFTP_BLKSIZE - TFTP block size

SYNOPSIS

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_BLKSIZE, long blocksize);

DESCRIPTION

Specify blocksize to use for TFTP data transmission. Valid range as per RFC2348 is 8-65464 bytes. The default of 512 bytes will be used if this option is not specified. The specified block size will only be used pending support by the remote server. If the server does not return an option acknowledgement or returns an option acknowledgement with no blksize, the default of 512 bytes will be used.

DEFAULT

512

PROTOCOLS

TFTP

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "tftp://example.com/bootimage");
  /* try using larger blocks */
  curl_easy_setopt(curl, CURLOPT_TFTP_BLKSIZE, 2048L);
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}

AVAILABILITY

Added in 7.19.4

RETURN VALUE

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