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23 .TH CURLOPT_SSL_OPTIONS 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
25 CURLOPT_SSL_OPTIONS \- set SSL behavior options
27 #include <curl/curl.h>
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_OPTIONS, long bitmask);
31 Pass a long with a bitmask to tell libcurl about specific SSL behaviors.
33 \fICURLSSLOPT_ALLOW_BEAST\fP tells libcurl to not attempt to use any
34 workarounds for a security flaw in the SSL3 and TLS1.0 protocols. If this
35 option isn't used or this bit is set to 0, the SSL layer libcurl uses may use a
36 work-around for this flaw although it might cause interoperability problems
37 with some (older) SSL implementations. WARNING: avoiding this work-around
38 lessens the security, and by setting this option to 1 you ask for exactly that.
39 This option is only supported for DarwinSSL, NSS and OpenSSL.
43 \fICURLSSLOPT_NO_REVOKE\fP tells libcurl to disable certificate revocation
44 checks for those SSL backends where such behavior is present. \fBCurrently this
45 option is only supported for WinSSL (the native Windows SSL library), with an
46 exception in the case of Windows' Untrusted Publishers blacklist which it seems
47 can't be bypassed.\fP This option may have broader support to accommodate other
48 SSL backends in the future.
49 http://curl.haxx.se/docs/ssl-compared.html
55 All TLS-based protocols
61 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
63 .BR CURLOPT_SSLVERSION "(3), " CURLOPT_SSL_CIPHER_LIST "(3), "