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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/879#note_139212580">lib/ext/max_record.c</a>:
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="c"> <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span> <span class="cm" style="color: #998; font-style: italic;">/* server side */</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="c"></span>
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<td class="diff-line-num new old_line" data-linenumber="156" 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="diff-line-num new new_line" data-linenumber="156" 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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<pre style="margin: 0;">+<span id="LC156" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">internals</span><span class="p">.</span><span class="n" style="color: #333;">hsk_flags</span> <span class="o" style="font-weight: 600;">&</span> <span class="n" style="color: #333;">HSK_RECORD_SIZE_LIMIT_SENT</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="157" 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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<pre style="margin: 0;">+<span id="LC157" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<td class="diff-line-num new new_line" data-linenumber="158" 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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<pre style="margin: 0;">+<span id="LC158" class="line" lang="c"></span>
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156
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<td class="diff-line-num new_line" data-linenumber="159" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC159" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">security_parameters</span><span class="p">.</span><span class="n" style="color: #333;">max_record_recv_size</span> <span class="o" style="font-weight: 600;">!=</span></span>
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157
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<td class="diff-line-num new_line" data-linenumber="160" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC160" class="line" lang="c"> <span class="n" style="color: #333;">DEFAULT_MAX_RECORD_SIZE</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="c"> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_mre_record2num</span></span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="c"> <span class="p">(</span><span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">security_parameters</span><span class="p">.</span></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="c"> <span class="n" style="color: #333;">max_record_recv_size</span><span class="p">);</span></span>
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<pre style="margin: 0;">-<span id="LC161" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC162" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* it's not an error, as long as we send the</span></span>
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<pre style="margin: 0;">-<span id="LC163" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * record_size_limit extension with that value */</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</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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<pre style="margin: 0;">-<span id="LC165" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;"><span class="idiff left right">0</span></span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;"><span class="idiff left">gnutls_assert_val</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">ret</span></span><span class="p"><span class="idiff right">)</span>;</span></span>
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<p dir="auto">There <em>was</em> <a href="https://gitlab.com/gnutls/gnutls/blob/master/tests/tls-record-size-limit.c#L319">a test</a> but it didn't fail due to <a href="https://gitlab.com/gnutls/gnutls/blob/master/lib/hello_ext.h#L162">a mishandling</a> of "max_fragment_length" sent by the client, where <code>id == 0</code>. I'm fixing this.</p>
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