<div class="content" name="COM_PROTOCOL" uuid="1b8931ee-08b1-49df-849b-1c68e66a87c4"><p>The COM_PROTOCOL is a bit field defining the set of <a href="2b0e7911-f115-477a-92db-2d9bd5a69ca8#gt_0c171cc7-e9c4-41b6-95a9-536db0042c7a" data-linktype="relative-path">RPC protocol sequences</a>
supported by an MSDTC Connection Manager: OleTx Transports Protocol <a href="2b0e7911-f115-477a-92db-2d9bd5a69ca8#gt_7b0ee975-d1b4-4a39-865d-d13e6c96aa76" data-linktype="relative-path">partner</a>.</p><table>
 <tbody><tr>
  <th><p><br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
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  <th><p>1<br/>0</p></th>
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  <th><p>3<br/>0</p></th>
  <th><p><br/>1</p></th>
 </tr>
 <tr>
  <td colspan="32">bitFieldEncoding</td>
 </tr>
</tbody></table><p><b>bitFieldEncoding (4 bytes): </b>The bits of this
data type MUST be encoded as follows.</p><dl>
<dd>
<p> </p>
</dd>
<dd>
<table>
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  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>1<br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
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  <th><p>2<br/>0</p></th>
  <th><p><br/>1</p></th>
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  <th><p>3<br/>0</p></th>
  <th><p><br/>1</p></th>
 </tr>
 <tr>
  <td>T</td>
  <td>S</td>
  <td>B</td>
  <td>U</td>
  <td>0</td>
  <td>L</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
  <td>0</td>
 </tr>
</tbody></table>
</dd></dl><p> </p><dl>
<dd>
<dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Value</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>T PROT_IP_TCP (0x00000001)</td>
  <td>A flag indicating whether the &#34;ncacn_ip_tcp&#34; RPC protocol sequence is supported by the endpoint. If the value is 1, the protocol sequence is supported; otherwise, it is not.</td>
 </tr><tr>
  <td>S PROT_SPX (0x00000002)</td>
  <td>A flag indicating whether the &#34;ncacn_spx&#34; RPC protocol sequence is supported by the endpoint. If the value is 1, the protocol sequence is supported; otherwise, it is not.</td>
 </tr><tr>
  <td>B PROT_NET_BEUI (0x00000004)</td>
  <td>A flag indicating whether the &#34;ncacn_nb_nb&#34; RPC protocol sequence is supported by the endpoint. If the value is 1, the protocol sequence is supported; otherwise, it is not.</td>
 </tr><tr>
  <td>U PROT_IP_UDP (0x00000008)</td>
  <td>A flag indicating whether the &#34;ncacn_ip_udp&#34; RPC protocol sequence is supported by the endpoint. If the value is 1, the protocol sequence is supported; otherwise, it is not.</td>
 </tr><tr>
  <td>L PROT_LRPC (0x00000020)</td>
  <td>A flag indicating whether the &#34;ncalrpc&#34; RPC protocol sequence is supported by the endpoint. If the value is 1, the protocol sequence is supported; otherwise, the protocol sequence is not supported.</td>
 </tr></tbody></table>
</dd>
<dd>
<p>If none of the bits are
set, then <b>bitFieldEncoding</b> is assumed to be set to PROT_IP_TCP by
default.</p>
</dd></dl></dd></dl></div>