CURLOPT_PROXY_SSL_VERIFYHOST(3)

1CURLOPT_PROXY_SSL_VERIFYHOSTc(u3r)l_easy_setopt optiCoUnRsLOPT_PROXY_SSL_VERIFYHOST(3)
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NAME

6       CURLOPT_PROXY_SSL_VERIFYHOST  -  verify  the  proxy  certificate's name
7       against host
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SYNOPSIS

10       #include <curl/curl.h>
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12       CURLcode curl_easy_setopt(CURL  *handle,  CURLOPT_PROXY_SSL_VERIFYHOST,
13       long verify);
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DESCRIPTION

16       Pass  a  long  set  to 2L as asking curl to verify in the HTTPS proxy's
17       certificate name fields against the proxy name.
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19       This option determines whether libcurl verifies  that  the  proxy  cert
20       contains the correct name for the name it is known as.
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22       When  CURLOPT_PROXY_SSL_VERIFYHOST(3)  is 2, the proxy certificate must
23       indicate that the server is the proxy to which you meant to connect to,
24       or the connection fails.
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26       Curl considers the proxy the intended one when the Common Name field or
27       a Subject Alternate Name field in the certificate matches the host name
28       in the proxy string which you told curl to use.
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30       When  the verify value is 1L, curl_easy_setopt will return an error and
31       the option value will not be changed due to old legacy reasons.
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33       When the verify value is 0L, the connection succeeds regardless of  the
34       names used in the certificate. Use that ability with caution!
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36       See  also  CURLOPT_PROXY_SSL_VERIFYPEER(3) to verify the digital signa‐
37       ture of the proxy certificate.  If libcurl is  built  against  NSS  and
38       CURLOPT_PROXY_SSL_VERIFYPEER(3)   is   zero,  CURLOPT_PROXY_SSL_VERIFY‐
39       HOST(3) is also set to zero and cannot be overridden.
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DEFAULT

42       2
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PROTOCOLS

45       All protocols when used over an HTTPS proxy.
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EXAMPLE

48       CURL *curl = curl_easy_init();
49       if(curl) {
50         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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52         /* Set the default value: strict name check please */
53         curl_easy_setopt(curl, CURLOPT_PROXY_SSL_VERIFYHOST, 2L);
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55         curl_easy_perform(curl);
56       }
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AVAILABILITY

59       Added in 7.52.0.
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61       If built TLS enabled.
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RETURN VALUE

64       Returns CURLE_OK if TLS is supported, and CURLE_UNKNOWN_OPTION if not.
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66       If 1 is set as argument, CURLE_BAD_FUNCTION_ARGUMENT is returned.
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