Tribblix: manual page: CURLOPT_SASL

CURLOPT_SASL_IR(3) Introduction to Library Functions CURLOPT_SASL_IR(3)

NAME

CURLOPT_SASL_IR - send initial response in first packet

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SASL_IR, long enable);

DESCRIPTION

Pass a long. If the value is 1, curl sends the initial response to
the server in the first authentication packet in order to reduce the
number of ping pong requests. Only applicable to the following
supporting SASL authentication mechanisms:

* Login * Plain * GSSAPI * NTLM * OAuth 2.0

Note: Whilst IMAP supports this option there is no need to explicitly
set it, as libcurl can determine the feature itself when the server
supports the SASL-IR CAPABILITY.

DEFAULT

PROTOCOLS

This functionality affects imap and smtp

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "smtp://example.com/");
curl_easy_setopt(curl, CURLOPT_SASL_IR, 1L);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}

AVAILABILITY

Added in curl 7.31.0

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).