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CURLOPT_SSL_ENABLE_NPN(3) curl_easy_setopt options CURLOPT_SSL_ENABLE_NPN(3) NAME CURLOPT_SSL_ENABLE_NPN - enable NPN SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_ENABLE_NPN, long npn); DESCRIPTION Pass a long as parameter, 0 or 1 where 1 is for enable and 0 for dis- able. This option enables/disables NPN in the SSL handshake (if the SSL backend libcurl is built to use supports it), which can be used to ne- gotiate http2. DEFAULT 1, enabled PROTOCOLS HTTP EXAMPLE CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); curl_easy_setopt(curl, CURLOPT_SSL_ENABLE_NPN, 1L); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); } AVAILABILITY Added in 7.36.0 RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO CURLOPT_SSL_ENABLE_ALPN(3), CURLOPT_SSL_OPTIONS(3), libcurl 7.72.0 May 31, 2017 CURLOPT_SSL_ENABLE_NPN(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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