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                     23: .TH CURLOPT_SSL_FALSESTART 3 "May 15, 2017" "libcurl 7.70.0" "curl_easy_setopt options"
                     24: 
                     25: .SH NAME
                     26: CURLOPT_SSL_FALSESTART \- enable TLS false start
                     27: .SH SYNOPSIS
                     28: #include <curl/curl.h>
                     29: 
                     30: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_FALSESTART, long enable);
                     31: .SH DESCRIPTION
                     32: Pass a long as parameter set to 1L to enable or 0 to disable.
                     33: 
                     34: This option determines whether libcurl should use false start during the TLS
                     35: handshake. False start is a mode where a TLS client will start sending
                     36: application data before verifying the server's Finished message, thus saving a
                     37: round trip when performing a full handshake.
                     38: .SH DEFAULT
                     39: 0
                     40: .SH PROTOCOLS
                     41: All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
                     42: .SH EXAMPLE
                     43: .nf
                     44: CURL *curl = curl_easy_init();
                     45: if(curl) {
                     46:   curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
                     47:   curl_easy_setopt(curl, CURLOPT_SSL_FALSESTART, 1L);
                     48:   curl_easy_perform(curl);
                     49: }
                     50: .fi
                     51: .SH AVAILABILITY
                     52: Added in 7.42.0. This option is currently only supported by the NSS and
                     53: Secure Transport (on iOS 7.0 or later, or OS X 10.9 or later) TLS backends.
                     54: .SH RETURN VALUE
                     55: Returns CURLE_OK if false start is supported by the SSL backend, otherwise
                     56: returns CURLE_NOT_BUILT_IN.