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23 .TH CURLOPT_SSL_ENABLE_NPN 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
25 CURLOPT_SSL_ENABLE_NPN \- enable NPN
27 #include <curl/curl.h>
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_ENABLE_NPN, long npn);
31 Pass a long as parameter, 0 or 1 where 1 is for enable and 0 for disable. This
32 option enables/disables NPN in the SSL handshake (if the SSL backend libcurl
33 is built to use supports it), which can be used to negotiate http2.
43 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
45 .BR CURLOPT_SSL_ENABLE_ALPN "(3), " CURLOPT_SSL_OPTIONS "(3), "