1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLOPT_SASL_IR 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_MAIL_AUTH (3) 9 - CURLOPT_MAIL_FROM (3) 10 - CURLOPT_SASL_AUTHZID (3) 11Protocol: 12 - SMTP 13 - IMAP 14Added-in: 7.31.0 15--- 16 17# NAME 18 19CURLOPT_SASL_IR - send initial response in first packet 20 21# SYNOPSIS 22 23~~~c 24#include <curl/curl.h> 25 26CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SASL_IR, long enable); 27~~~ 28 29# DESCRIPTION 30 31Pass a long. If the value is 1, curl sends the initial response to the server 32in the first authentication packet in order to reduce the number of ping pong 33requests. Only applicable to the following supporting SASL authentication 34mechanisms: 35 36* Login 37* Plain 38* GSSAPI 39* NTLM 40* OAuth 2.0 41 42Note: Whilst IMAP supports this option there is no need to explicitly set it, 43as libcurl can determine the feature itself when the server supports the 44SASL-IR CAPABILITY. 45 46# DEFAULT 47 480 49 50# %PROTOCOLS% 51 52# EXAMPLE 53 54~~~c 55int main(void) 56{ 57 CURL *curl = curl_easy_init(); 58 if(curl) { 59 CURLcode res; 60 curl_easy_setopt(curl, CURLOPT_URL, "smtp://example.com/"); 61 curl_easy_setopt(curl, CURLOPT_SASL_IR, 1L); 62 res = curl_easy_perform(curl); 63 curl_easy_cleanup(curl); 64 } 65} 66~~~ 67 68# %AVAILABILITY% 69 70# RETURN VALUE 71 72Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 73
