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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/775#note_114129498">doc/cha-gtls-app.texi</a>:
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<td class="diff-line-num new new_line" data-linenumber="1028" 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="LC1028" class="line" lang="plaintext">@funcref{gnutls_anti_replay_init}, and then attached to a session using</span>
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<td class="diff-line-num new new_line" data-linenumber="1029" 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="LC1029" class="line" lang="plaintext">@funcref{gnutls_anti_replay_enable}. It can be deinitialized with</span>
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<td class="diff-line-num new new_line" data-linenumber="1030" 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="LC1030" class="line" lang="plaintext">@funcref{gnutls_anti_replay_deinit}.</span>
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<td class="diff-line-num new new_line" data-linenumber="1031" 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">
1031
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<pre style="margin: 0;">+<span id="LC1031" class="line" lang="plaintext"></span>
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<td class="diff-line-num new new_line" data-linenumber="1032" 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="LC1032" class="line" lang="plaintext">By default, the mechanism stores the ClientHello messages on the process</span>
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<td class="diff-line-num new new_line" data-linenumber="1033" 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="LC1033" class="line" lang="plaintext">memory. For a long-running server or distributed servers, you can set</span>
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<td class="diff-line-num new new_line" data-linenumber="1034" 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="LC1034" class="line" lang="plaintext">back-end functions with @funcref{gnutls_db_set_check_function} and</span>
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<td class="diff-line-num new new_line" data-linenumber="1035" 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="LC1035" class="line" lang="plaintext">@funcref{gnutls_db_set_store_function} (see @ref{Session resumption}).</span>
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<td class="diff-line-num new new_line" data-linenumber="1036" 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="LC1036" class="line" lang="plaintext"></span>
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<td class="diff-line-num new new_line" data-linenumber="1037" 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="LC1037" class="line" lang="plaintext">Although those back-end functions can be the same as the one used for</span>
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<td class="diff-line-num new new_line" data-linenumber="1038" 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="LC1038" class="line" lang="plaintext">TLS 1.2 session resumption, there are a couple of things to note.</span>
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<pre style="margin: 0;">+<span id="LC1039" class="line" lang="plaintext">Firstly, as the anti-replay mechanism doesn't use values associate with</span>
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<pre style="margin: 0;">+<span id="LC1040" class="line" lang="plaintext">the keys, the store function takes the same data as key and value.</span>
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<pre style="margin: 0;">+<span id="LC1041" class="line" lang="plaintext">Secondly, the back-end needs to periodically clean up the stored entries</span>
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<pre style="margin: 0;">+<span id="LC1042" class="line" lang="plaintext">based on the time window set with</span>
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<pre style="margin: 0;">+<span id="LC1043" class="line" lang="plaintext">@funcref{gnutls_anti_replay_set_window}.</span>
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<p dir="auto">What about adding: "the cleanup can be implemented by iterating through the database entries and calling
<code>gnutls_db_check_entry_time</code>. This is similar to session database cleanup used by TLS1.2 sessions."? Is that the suggested process?</p>
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