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76 lines
2.3 KiB
Groff
76 lines
2.3 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_PROXY_SSL_VERIFYHOST.md
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.TH CURLOPT_PROXY_SSL_VERIFYHOST 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_PROXY_SSL_VERIFYHOST \- verify the proxy certificate\(aqs name against host
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSL_VERIFYHOST,
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long verify);
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.fi
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.SH DESCRIPTION
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Pass a long set to 2L as asking curl to \fIverify\fP in the HTTPS proxy\(aqs
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certificate name fields against the proxy name.
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This option determines whether libcurl verifies that the proxy cert contains
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the correct name for the name it is known as.
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When \fICURLOPT_PROXY_SSL_VERIFYHOST(3)\fP is 2, the proxy certificate must
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indicate that the server is the proxy to which you meant to connect to, or the
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connection fails.
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Curl considers the proxy the intended one when the Common Name field or a
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Subject Alternate Name field in the certificate matches the hostname in the
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proxy string which you told curl to use.
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If \fIverify\fP value is set to 1:
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In 7.28.0 and earlier: treated as a debug option of some sorts, not supported
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anymore due to frequently leading to programmer mistakes.
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From 7.28.1 to 7.65.3: setting it to 1 made \fIcurl_easy_setopt(3)\fP return
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an error and leaving the flag untouched.
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From 7.66.0: treats 1 and 2 the same.
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When the \fIverify\fP value is 0L, the connection succeeds regardless of the
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names used in the certificate. Use that ability with caution!
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See also \fICURLOPT_PROXY_SSL_VERIFYPEER(3)\fP to verify the digital signature
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of the proxy certificate.
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.SH DEFAULT
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2
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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All TLS backends support this option.
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Set the default value: strict name check please */
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curl_easy_setopt(curl, CURLOPT_PROXY_SSL_VERIFYHOST, 2L);
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.52.0.
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If built TLS enabled.
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.SH RETURN VALUE
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Returns CURLE_OK if TLS is supported, and CURLE_UNKNOWN_OPTION if not.
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If 1 is set as argument, \fICURLE_BAD_FUNCTION_ARGUMENT\fP is returned.
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.SH SEE ALSO
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.BR CURLOPT_CAINFO (3),
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.BR CURLOPT_PROXY_CAINFO (3),
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.BR CURLOPT_PROXY_SSL_VERIFYPEER (3),
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.BR CURLOPT_SSL_VERIFYPEER (3)
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