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<a href="https://gitlab.com/Qriist">Qriist</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1726">#1726</a>
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<h2 dir="auto" style="margin-top: 0; margin-bottom: 10px;" align="initial">
<a href="#description-of-problem" aria-hidden="true" class="anchor" id="user-content-description-of-problem" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Description of problem:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Note: I first became aware of this issue trying to solve a WolfSSL issue, and then I engaged with curl's devs to further diagnose the problem. I recommend reading them for full context.
<a href="https://github.com/wolfSSL/wolfssl/issues/9016" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">https://github.com/wolfSSL/wolfssl/issues/9016</a>
<a href="https://github.com/curl/curl/issues/17965" rel="nofollow noreferrer noopener" target="_blank">https://github.com/curl/curl/issues/17965</a></p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Somewhere between GnuTLS and libcurl there is an exception thrown when trying to access any url on <a href="https://collectionapi.metmuseum.org" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">https://collectionapi.metmuseum.org</a>. The curl devs alerted me to a broken SSL certificate chain via <a href="https://www.ssllabs.com/ssltest/analyze.html?d=collectionapi.metmuseum.org&latest" rel="nofollow noreferrer noopener" target="_blank">https://www.ssllabs.com/ssltest/analyze.html?d=collectionapi.metmuseum.org&latest</a></p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Unfortunately, it is not yet clear to me which side of the equation, libcurl or GnuTLS, is actually throwing the error.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">However, the error does not occur on the curl dev's macOS machine so it's likely something Windows-specific.</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#version-of-gnutls-used" aria-hidden="true" class="anchor" id="user-content-version-of-gnutls-used" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Version of gnutls used:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">3.8.7</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#distributor-of-gnutls-eg-ubuntu-fedora-rhel" aria-hidden="true" class="anchor" id="user-content-distributor-of-gnutls-eg-ubuntu-fedora-rhel" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Windows vcpkg</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#how-reproducible" aria-hidden="true" class="anchor" id="user-content-how-reproducible" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>How reproducible:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">100%</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Steps to Reproduce:</p>
<ul dir="auto" style="text-align: initial; list-style-type: disc; margin: 0 0 1rem; padding: 0;">
<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">use vcpkg to build libcurl with gnutls flag enabled</li>
<li style="line-height: 1.6em; margin-left: 25px; padding-left: 3px;">initialize libcurl with the gnutls backend</li>
<li style="line-height: 1.6em; margin-left: 25px; padding-left: 3px;">point libcurl at <a href="https://collectionapi.metmuseum.org" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">https://collectionapi.metmuseum.org</a> and run the transfer</li>
</ul>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#actual-results" aria-hidden="true" class="anchor" id="user-content-actual-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Actual results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">GnuTLS/libcurl immediately generates Windows exception 0xc0000fd (<code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; margin-top: 0; font-weight: inherit; white-space: break-spaces; word-break: break-all; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: break-word; padding: 0.125rem 0.25rem;'>STATUS_STACK_OVERFLOW</code>).</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">I do have captured debug information that may help:</p>
<div class="gl-relative markdown-code-block js-markdown-code">
<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; border-radius: .25rem; background-color: inherit; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">Host collectionapi.metmuseum.org:443 was resolved.</span>
<span id="LC2" class="line" lang="plaintext">IPv6: (none)</span>
<span id="LC3" class="line" lang="plaintext">IPv4: 45.60.77.20</span>
<span id="LC4" class="line" lang="plaintext"> Trying 45.60.77.20:443...</span>
<span id="LC5" class="line" lang="plaintext">GnuTLS priority: NORMAL:-ARCFOUR-128:-CTYPE-ALL:+CTYPE-X509:-VERS-SSL3.0</span>
<span id="LC6" class="line" lang="plaintext">ALPN: curl offers h2,http/1.1</span>
<span id="LC7" class="line" lang="plaintext">found 143 certificates in C:\Projects\LibQurl\bin\curl-ca-bundle.crt</span></code></pre>
<copy-code></copy-code><insert-code-snippet></insert-code-snippet>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Based on my testing against another website, the error happens right before libcurl would record (something similar to) <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; margin-top: 0; font-weight: inherit; white-space: break-spaces; word-break: break-all; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: break-word; padding: 0.125rem 0.25rem;'>SSL connection using TLS1.3 / ECDHE_RSA_AES_256_GCM_SHA384</code>.</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#expected-results" aria-hidden="true" class="anchor" id="user-content-expected-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Expected results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">not that</p>
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