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

       0

PROTOCOLS

       IMAP, POP3 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 7.31.0

RETURN VALUE

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

SEE ALSO

       CURLOPT_MAIL_AUTH(3), CURLOPT_MAIL_FROM(3), CURLOPT_SASL_AUTHZID(3)