| Index: net/third_party/udt/doc/doc/recvfile.htm
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| -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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| -<html xmlns="http://www.w3.org/1999/xhtml">
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| -<head>
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| -<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
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| -<title> UDT Reference</title>
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| -<link rel="stylesheet" href="udtdoc.css" type="text/css" />
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| -</head>
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| -
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| -<body>
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| -<div class="ref_head"> UDT Reference: Functions</div>
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| -
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| -<h4 class="func_name"><strong>recvfile</strong></h4>
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| -<p>The <b>recvfile</b> method reads certain amount of data into a local file.</p>
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| -
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| -<div class="code">int64_t recvfile(<br />
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| - UDTSOCKET <font color="#FFFFFF">u</font>,<br />
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| - fstream& <font color="#FFFFFF">ofs</font>,<br />
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| - int64_t& <font color="#FFFFFF">offset</font>,<br />
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| - int64_t <font color="#FFFFFF">size</font>,<br />
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| - int <font color="#FFFFFF">block</font> = 366000<br />
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| -);</div>
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| -
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| -<h5>Parameters</h5>
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| -<dl>
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| - <dt><i>u</i></dt>
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| - <dd>[in] Descriptor identifying a connected socket.</dd>
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| - <dt><em>ofs</em></dt>
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| - <dd>[in] C++ fstream descriptor for the file to store incoming data.</dd>
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| - <dt><em>offset</em></dt>
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| - <dd>[in, out] The offset position from where the data is written into the file; after the call returns, this value records the new offset of the write position. </dd>
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| - <dt><em>size</em></dt>
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| - <dd>[in] The total size to be received.</dd>
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| - <dt><em>block</em></dt>
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| - <dd>[in] Optional. The size of every data block for file IO.</dd>
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| -</dl>
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| -
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| -<h5>Return Value</h5>
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| -<p>On success, <b>recvfile</b> returns the actual size of received data. Otherwise UDT::ERROR is returned and specific error information can be retrieved by <a
|
| -href="error.htm">getlasterror</a>.</p>
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| -
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| -<table width="100%" border="1" cellpadding="2" cellspacing="0" bordercolor="#CCCCCC">
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| - <tr>
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| - <td width="17%" class="table_headline"><strong>Error Name</strong></td>
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| - <td width="17%" class="table_headline"><strong>Error Code</strong></td>
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| - <td width="83%" class="table_headline"><strong>Comment</strong></td>
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| - </tr>
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| - <tr>
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| - <td>ECONNLOST</td>
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| - <td>2001</td>
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| - <td>connection has been broken and no data left in receiver buffer.</td>
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| - </tr>
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| - <tr>
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| - <td>ENOCONN</td>
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| - <td>2002</td>
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| - <td><i>u</i> is not connected.</td>
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| - </tr>
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| - <tr>
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| - <td>EFILE</td>
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| - <td>4000</td>
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| - <td>File or disk system errors.</td>
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| - </tr>
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| - <tr>
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| - <td>EINVSOCK</td>
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| - <td>5004</td>
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| - <td><i>u</i> is not an valid socket.</td>
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| - </tr>
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| - <tr>
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| - <td>EDGRAMILL</td>
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| - <td>5010</td>
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| - <td>cannot use <i>recvfile</i> in SOCK_DGRAM mode.</td>
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| - </tr>
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| -</table>
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| -
|
| -<h5>Description</h5>
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| -<p>The <strong>recvfile</strong> method reads certain amount of data and write it into a local file. It is always in blocking mode and neither UDT_RCVSYN nor UDT_RCVTIMEO affects this method. The actual size of data to expect must be known before calling recvfile, otherwise deadlock may occur due to insufficient incoming data.</p>
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| -<h5>See Also</h5>
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| -<p><strong><a href="send.htm">send</a>, <a href="sendfile.htm">sendfile</a>, <a href="recv.htm">recv</a></strong></p>
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| -<p> </p>
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| -
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| -</body>
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| -</html>
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|
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