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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1559#note_888617176">lib/includes/gnutls/socket.h</a>:
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC49" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Since: 3.7.3</span></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC50" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;"><pre style="margin: 0;"> <span id="LC51" class="line" lang="c"><span class="k" style="font-weight: 600;">typedef</span> <span class="k" style="font-weight: 600;">enum</span> <span class="p">{</span></span>
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC52" class="line" lang="c"> <span class="n" style="color: #333;">GNUTLS_KTLS_RECV</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;"><<</span> <span class="mi" style="color: #099;">0</span><span class="p">,</span></span>
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb"><pre style="margin: 0;">-<span id="LC53" class="line" lang="c"> <span class="n" style="color: #333;">GNUTLS_KTLS_SEND</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;"><<</span> <span class="mi" style="color: #099;">1</span><span class="p">,</span></span>
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<td class="new_line diff-line-num new" data-linenumber="52" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC52" class="line" lang="c"> <span class="n" style="color: #333;">GNUTLS_KTLS_CONFIG_ENABLED</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;"><<</span> <span class="mi" style="color: #099;">0</span><span class="p">,</span></span>
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<td class="new_line diff-line-num new" data-linenumber="53" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0"><pre style="margin: 0;">+<span id="LC53" class="line" lang="c"> <span class="n" style="color: #333;">GNUTLS_KTLS_RECV</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;"><<</span> <span class="mi" style="color: #099;">1</span><span class="p">,</span></span>
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<p dir="auto">This way of changing enums is not backward compatible (the programs compiled with previous version of GnuTLS will be confused with <code>GNUTLS_KTLS_RECV</code> and <code>GNUTLS_KTLS_SEND</code>). I'd move <code>GNUTLS_KTLS_CONFIG_ENABLED</code> to the end (i.e., <code>1 << 2</code>), though I would rather suggest not touching this enum. If KTLS is disabled by the config, <code>gnutls_transport_is_ktls_enabled</code> will always return 0.</p>
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