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
8

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.
18
19       This option determines whether libcurl verifies  that  the  proxy  cert
20       contains the correct name for the name it is known as.
21
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       If verify value is set to 1:
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32       In  7.28.0  and  earlier:  treated as a debug option of some sorts, not
33       supported anymore due to frequently leading to programmer mistakes.
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35       From 7.28.1 to 7.65.3: setting it to 1 made  curl_easy_setopt()  return
36       an error and leaving the flag untouched.
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38       From 7.66.0: treats 1 and 2 the same.
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40       When  the verify value is 0L, the connection succeeds regardless of the
41       names used in the certificate. Use that ability with caution!
42
43       See also CURLOPT_PROXY_SSL_VERIFYPEER(3) to verify the  digital  signa‐
44       ture  of  the  proxy  certificate.  If libcurl is built against NSS and
45       CURLOPT_PROXY_SSL_VERIFYPEER(3)  is   zero,   CURLOPT_PROXY_SSL_VERIFY‐
46       HOST(3) is also set to zero and cannot be overridden.
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DEFAULT

49       2
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PROTOCOLS

52       All protocols when used over an HTTPS proxy.
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EXAMPLE

55       CURL *curl = curl_easy_init();
56       if(curl) {
57         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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59         /* Set the default value: strict name check please */
60         curl_easy_setopt(curl, CURLOPT_PROXY_SSL_VERIFYHOST, 2L);
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62         curl_easy_perform(curl);
63       }
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AVAILABILITY

66       Added in 7.52.0.
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68       If built TLS enabled.
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RETURN VALUE

71       Returns CURLE_OK if TLS is supported, and CURLE_UNKNOWN_OPTION if not.
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73       If 1 is set as argument, CURLE_BAD_FUNCTION_ARGUMENT is returned.
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SEE ALSO

76       CURLOPT_PROXY_SSL_VERIFYPEER(3),      CURLOPT_PROXY_CAINFO(3),     CUR‐
77       LOPT_SSL_VERIFYPEER(3), CURLOPT_CAINFO(3),
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81libcurl 7.71.1                  August 20, 2019CURLOPT_PROXY_SSL_VERIFYHOST(3)
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