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<a href="https://gitlab.com/berrange">Daniel P. Berrangé</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1451#note_682339027">lib/system/ktls.c</a>:
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "config.h"</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "system/ktls.h"</span></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#ifdef ENABLE_KTLS</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <linux/tls.h></span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <record.h></span></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <sys/socket.h></span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <netinet/tcp.h></span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <unistd.h></span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <errno.h></span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/**</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * gnutls_transport_set_ktls:</span></span>
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<p dir="auto">If I was using this method, then I expect it would be upfront at the same time as initializing the transport. IOW before handshake.</p>
<p dir="auto">WRT to whether to return an error or do automatic fallback, personally I'd tend towards "do the right thing". I tend to view KTLS as a "nice to have" optimization, rather than a "must have" feature, so want it to be tried, but if not possible, transparently fallback.</p>
<p dir="auto">If there are people, however, that view KTLS as something more critical, then they might want strong guarantees.</p>
<p dir="auto">Perhaps it could motivate a extra param</p>
<p dir="auto"><a href="https://gitlab.com/required" data-group="390529" data-reference-type="user" data-container="body" data-placement="top" class="gfm gfm-project_member js-user-link" title="required">@required</a>: 1 if KTLS is mandatory, 0 if KTLS is optional</p>
<p dir="auto">?</p>
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