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- .\" generated by cd2nroff 0.1 from CURLOPT_SASL_IR.md
- .TH CURLOPT_SASL_IR 3 "2025-01-17" libcurl
- .SH NAME
- CURLOPT_SASL_IR \- send initial response in first packet
- .SH SYNOPSIS
- .nf
- #include <curl/curl.h>
- CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SASL_IR, long enable);
- .fi
- .SH 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.
- .SH DEFAULT
- 0
- .SH PROTOCOLS
- This functionality affects imap and smtp
- .SH EXAMPLE
- .nf
- 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);
- }
- }
- .fi
- .SH AVAILABILITY
- Added in curl 7.31.0
- .SH RETURN VALUE
- Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
- .SH SEE ALSO
- .BR CURLOPT_MAIL_AUTH (3),
- .BR CURLOPT_MAIL_FROM (3),
- .BR CURLOPT_SASL_AUTHZID (3)
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