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45 lines
1.3 KiB
Groff
45 lines
1.3 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_SSL_FALSESTART.md
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.TH CURLOPT_SSL_FALSESTART 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_SSL_FALSESTART \- TLS false start
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_FALSESTART, long enable);
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.fi
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.SH DESCRIPTION
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Pass a long as parameter set to 1L to enable or 0 to disable.
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This option determines whether libcurl should use false start during the TLS
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handshake. False start is a mode where a TLS client starts sending application
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data before verifying the server\(aqs Finished message, thus saving a round trip
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when performing a full handshake.
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.SH DEFAULT
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0
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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This option works only with the following TLS backends:
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Secure Transport
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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curl_easy_setopt(curl, CURLOPT_SSL_FALSESTART, 1L);
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.42.0. This option is currently only supported by the Secure
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Transport (on iOS 7.0 or later, or OS X 10.9 or later) TLS backend.
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.SH RETURN VALUE
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Returns CURLE_OK if false start is supported by the SSL backend, otherwise
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returns CURLE_NOT_BUILT_IN.
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.SH SEE ALSO
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.BR CURLOPT_TCP_FASTOPEN (3)
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