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.TH CURLOPT_TFTP_BLKSIZE 3 "May 31, 2017" "libcurl 7.67.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_TFTP_BLKSIZE \- TFTP block size
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_BLKSIZE, long blocksize);
.SH DESCRIPTION
Specify \fIblocksize\fP 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.
.SH DEFAULT
512
.SH PROTOCOLS
TFTP
.SH EXAMPLE
.nf
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);
}
.fi
.SH AVAILABILITY
Added in 7.19.4
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_MAXFILESIZE "(3), "