| Index: net/third_party/udt/doc/doc/send.htm
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| --- net/third_party/udt/doc/doc/send.htm (revision 78992)
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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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| -
|
| -<h4 class="func_name"><strong>send</strong></h4>
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| -<p>The <b>send</b> method sends out certain amount of data from an application buffer.</p>
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| -
|
| -<div class="code">int send(<br />
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| - UDTSOCKET <font color="#FFFFFF">u</font>,<br />
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| - const char* <font color="#FFFFFF">buf</font>,<br />
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| - int <font color="#FFFFFF">len</font>,<br />
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| - int <font color="#FFFFFF">flags</font><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>buf</em></dt>
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| - <dd>[in] The buffer of data to be sent.</dd>
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| - <dt><em>len</em></dt>
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| - <dd>[in] Length of the buffer.</dd>
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| - <dt><em>flags</em></dt>
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| - <dd>[in] Ignored. For compatibility only.</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>send</b> returns the actual size of data that has been sent. Otherwise UDT::ERROR is returned and specific error information can be retrieved by <a
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| -href="error.htm">getlasterror</a>. If UDT_SNDTIMEO is set to a positive value, zero will be returned if no data is sent before the timer expires.</p>
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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.</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>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>send</i> in SOCK_DGRAM mode.</td>
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| - </tr>
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| - <tr>
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| - <td>EASYNCSND</td>
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| - <td>6001</td>
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| - <td><i>u</i> is non-blocking (UDT_SNDSYN = false) but buffer space is available for sending.</td>
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| - </tr>
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| - <tr>
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| - <td>EPEERERR</td>
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| - <td>7000</td>
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| - <td>The peer side has an unrecoverable error and this call has to be cancelled. </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>send</strong> method sends certain amount of data from the application buffer. If the the size limit of sending buffer queue is reached,
|
| -<strong>send</strong> only sends a portion of the application buffer and returns the actual size of data that has been sent.</p>
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| -<p>In blocking mode (default), <strong>send</strong> waits until there is some sending buffer space available. In non-blocking mode, <strong>send</strong>
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| -returns immediately and returns error if the sending queue limit is already limited.</p>
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| -<p>If UDT_SNDTIMEO is set and the socket is in blocking mode, <strong>send</strong> only waits a limited time specified by UDT_SNDTIMEO option. If there is still no
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| -buffer space available when the timer expires, zero will be returned. UDT_SNDTIMEO has no effect for non-blocking socket.</p>
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| -
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| -<h5>See Also</h5>
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| -<p><strong><a href="select.htm">select</a>, <a href="recv.htm">send</a>, <a href="sendfile.htm">sendfile</a>, <a href="recvfile.htm">recvfile</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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