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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/706#note_92414012">lib/record.c</a>:
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<td class="diff-line-num new old_line" data-linenumber="1338" 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="1366" 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">
1366
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<pre style="margin: 0;">+<span id="LC1366" class="line" lang="c"> <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">discard</span><span class="p">;</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1338" 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="1367" 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">
1367
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<pre style="margin: 0;">+<span id="LC1367" class="line" lang="c"> <span class="p">}</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1338" 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="1368" 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">
1368
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<pre style="margin: 0;">+<span id="LC1368" class="line" lang="c"></span>
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<td class="diff-line-num old_line" data-linenumber="1338" 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">
1338
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<td class="diff-line-num new_line" data-linenumber="1369" 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">
1369
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<pre style="margin: 0;"> <span id="LC1369" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_assert</span><span class="p">();</span></span>
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<td class="diff-line-num old_line" data-linenumber="1339" 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">
1339
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<td class="diff-line-num new_line" data-linenumber="1370" 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">
1370
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<pre style="margin: 0;"> <span id="LC1370" class="line" lang="c"> <span class="n" style="color: #333;">_gnutls_audit_log</span><span class="p">(</span><span class="n" style="color: #333;">session</span><span class="p">,</span></span>
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<td class="diff-line-num old_line" data-linenumber="1340" 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">
1340
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<td class="diff-line-num new_line" data-linenumber="1371" 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">
1371
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<pre style="margin: 0;"> <span id="LC1371" class="line" lang="c"> <span class="s" style="color: #d14;">"Discarded message[%u] due to invalid decryption</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">,</span></span>
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<td class="diff-line-num old_line" data-linenumber="1341" 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">
1341
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<td class="diff-line-num new_line" data-linenumber="1372" 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">
1372
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<pre style="margin: 0;"> <span id="LC1372" class="line" lang="c"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">unsigned</span> <span class="kt" style="color: #458; font-weight: 600;">int</span><span class="p">)</span></span>
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<td class="diff-line-num old_line" data-linenumber="1342" 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">
1342
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<td class="diff-line-num new_line" data-linenumber="1373" 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">
1373
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<pre style="margin: 0;"> <span id="LC1373" class="line" lang="c"> <span class="n" style="color: #333;">_gnutls_uint64touint32</span><span class="p">(</span><span class="n" style="color: #333;">packet_sequence</span><span class="p">));</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1343" 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="1374" 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">
1374
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<pre style="margin: 0;">+<span id="LC1374" class="line" lang="c"></span>
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1343
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<td class="diff-line-num new_line" data-linenumber="1375" 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="LC1375" class="line" lang="c"> <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">sanity_check_error</span><span class="p">;</span></span>
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<td class="diff-line-num old_line" data-linenumber="1344" 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">
1344
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<td class="diff-line-num new_line" data-linenumber="1376" 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="LC1376" class="line" lang="c"> <span class="p">}</span></span>
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<td class="diff-line-num new_line" data-linenumber="1377" 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">
1377
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<pre style="margin: 0;"> <span id="LC1377" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="1378" 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="LC1378" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* FIXME: as 0-RTT is not implemented yet, when the early data</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1379" 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="LC1379" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * is indicated and the record is properly decrypted, treat it</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1380" 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="LC1380" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * as the start of client's second flight. */</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1381" 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="LC1381" class="line" lang="c"> <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="o" style="font-weight: 600;">~</span><span class="n" style="color: #333;">HSK_EARLY_DATA_IN_FLIGHT</span><span class="p">;</span></span>
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<p dir="auto">nit: I guess that's a cheap operation, but we are doing it unconditionally for every record packet received. What if we combine it with the if check in 1337. i.e. only run it if we know we are handling early data?</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true" style="background-color: #fff; font-family: monospace; font-size: 90%; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0;"><code><span id="LC1" class="line" lang="plaintext">if (unlikely(session->internals.hsk_flags & HSK_EARLY_DATA_IN_FLIGHT)) {</span>
<span id="LC2" class="line" lang="plaintext"> if (record.type == GNUTLS_APPLICATION_DATA) {</span>
<span id="LC3" class="line" lang="plaintext"> if (record.length > session->security_parameters.max_early_data_size - session->internals.early_data_received)</span>
<span id="LC4" class="line" lang="plaintext"> .</span>
<span id="LC5" class="line" lang="plaintext"> .</span>
<span id="LC6" class="line" lang="plaintext"> .</span>
<span id="LC7" class="line" lang="plaintext"> } else {</span>
<span id="LC8" class="line" lang="plaintext"> session->internals.hsk_flags &= ~HSK_EARLY_DATA_IN_FLIGHT;</span>
<span id="LC9" class="line" lang="plaintext"> }</span>
<span id="LC10" class="line" lang="plaintext">}</span></code></pre>
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