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<div class="section" id="krb5-tkt-creds-step-get-the-next-kdc-request-in-a-tgs-exchange">
<h1>krb5_tkt_creds_step - Get the next KDC request in a TGS exchange.<a class="headerlink" href="#krb5-tkt-creds-step-get-the-next-kdc-request-in-a-tgs-exchange" title="Permalink to this headline">¶</a></h1>
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<dt id="krb5_tkt_creds_step">
<a class="reference internal" href="../types/krb5_error_code.html#krb5_error_code" title="krb5_error_code">krb5_error_code</a> <tt class="descname">krb5_tkt_creds_step</tt><big>(</big><a class="reference internal" href="../types/krb5_context.html#krb5_context" title="krb5_context">krb5_context</a><em> context</em>, <a class="reference internal" href="../types/krb5_tkt_creds_context.html#krb5_tkt_creds_context" title="krb5_tkt_creds_context">krb5_tkt_creds_context</a><em> ctx</em>, <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> in</em>, <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> out</em>, <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> realm</em>, unsigned int *<em> flags</em><big>)</big><a class="headerlink" href="#krb5_tkt_creds_step" title="Permalink to this definition">¶</a></dt>
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<tr class="field-odd field"><th class="field-name">param:</th><td class="field-body"><p class="first"><strong>[in]</strong> <strong>context</strong> - Library context</p>
<p><strong>[in]</strong> <strong>ctx</strong> - TGS request context</p>
<p><strong>[in]</strong> <strong>in</strong> - KDC response (empty on the first call)</p>
<p><strong>[out]</strong> <strong>out</strong> - Next KDC request</p>
<p><strong>[out]</strong> <strong>realm</strong> - Realm for next KDC request</p>
<p class="last"><strong>[out]</strong> <strong>flags</strong> - Output flags</p>
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<li>0 Success; otherwise - Kerberos error codes</li>
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<p>This function constructs the next KDC request for a TGS exchange, allowing the caller to control the transport of KDC requests and replies. On the first call, <em>in</em> should be set to an empty buffer; on subsequent calls, it should be set to the KDC’s reply to the previous request.</p>
<p>If more requests are needed, <em>flags</em> will be set to <a class="reference internal" href="../macros/KRB5_TKT_CREDS_STEP_FLAG_CONTINUE.html#KRB5_TKT_CREDS_STEP_FLAG_CONTINUE" title="KRB5_TKT_CREDS_STEP_FLAG_CONTINUE"><tt class="xref py py-data docutils literal"><span class="pre">KRB5_TKT_CREDS_STEP_FLAG_CONTINUE</span></tt></a> and the next request will be placed in <em>out</em> . If no more requests are needed, <em>flags</em> will not contain <a class="reference internal" href="../macros/KRB5_TKT_CREDS_STEP_FLAG_CONTINUE.html#KRB5_TKT_CREDS_STEP_FLAG_CONTINUE" title="KRB5_TKT_CREDS_STEP_FLAG_CONTINUE"><tt class="xref py py-data docutils literal"><span class="pre">KRB5_TKT_CREDS_STEP_FLAG_CONTINUE</span></tt></a> and <em>out</em> will be empty.</p>
<p>If this function returns <strong>KRB5KRB_ERR_RESPONSE_TOO_BIG</strong> , the caller should transmit the next request using TCP rather than UDP. If this function returns any other error, the TGS exchange has failed.</p>
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<p class="first admonition-title">Note</p>
<p class="last">New in 1.9</p>
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