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<div class="ref_head"> UDT Reference: Error Codes </div>
<h3><font color="#000080">UDT Error Codes List </font></h3>
<p>All UDT API will return an error upon a failed operation. Particularly, UDT defines UDT::INVALID_SOCK and UDT::ERROR as error returned values. (several routines return false as error value.) Application should check the return value against these two constants.</p>
<table width="100%" border="1" cellpadding="1" cellspacing="0" bordercolor="#CCCCCC">
<tr>
<td width="15%" class="table_headline"><strong>Error Name</strong></td>
<td width="15%" class="table_headline"><strong>Error Code</strong></td>
<td width="70%" class="table_headline"><strong>Comment</strong></td>
</tr>
<tr>
<td>SUCCESS</td>
<td>0</td>
<td>success operation.</td>
</tr>
<tr>
<td>ECONNSETUP</td>
<td>1000</td>
<td>connection setup failure.</td>
</tr>
<tr>
<td>ENOSERVER</td>
<td>1001</td>
<td>server does not exist.</td>
</tr>
<tr>
<td>ECONNREJ</td>
<td>1002</td>
<td>connection request was rejected by server.</td>
</tr>
<tr>
<td>ESOCKFAIL</td>
<td>1003</td>
<td>could not create/configure UDP socket.</td>
</tr>
<tr>
<td>ESECFAIL</td>
<td>1004</td>
<td>connection request was aborted due to security reasons.</td>
</tr>
<tr>
<td>ECONNFAIL</td>
<td>2000</td>
<td>connection failure.</td>
</tr>
<tr>
<td>ECONNLOST</td>
<td>2001</td>
<td>connection was broken.</td>
</tr>
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<td>ENOCONN</td>
<td>2002</td>
<td>connection does not exist.</td>
</tr>
<tr>
<td>ERESOURCE</td>
<td>3000</td>
<td>system resource failure.</td>
</tr>
<tr>
<td>ETHREAD</td>
<td>3001</td>
<td>could not create new thread.</td>
</tr>
<tr>
<td>ENOBUF</td>
<td>3002</td>
<td>no memory space.</td>
</tr>
<tr>
<td>EFILE</td>
<td>4000</td>
<td>file access error.</td>
</tr>
<tr>
<td>EINVRDOFF</td>
<td>4001</td>
<td>invalid read offset.</td>
</tr>
<tr>
<td>ERDPERM</td>
<td>4002</td>
<td>no read permission.</td>
</tr>
<tr>
<td>EINVWROFF</td>
<td>4003</td>
<td>invalid write offset.</td>
</tr>
<tr>
<td>EWRPERM</td>
<td>4004</td>
<td>no write permission.</td>
</tr>
<tr>
<td>EINVOP</td>
<td>5000</td>
<td>operation not supported.</td>
</tr>
<tr>
<td>EBOUNDSOCK</td>
<td>5001</td>
<td>cannot execute the operation on a bound socket.</td>
</tr>
<tr>
<td>ECONNSOCK</td>
<td>5002</td>
<td>cannot execute the operation on a connected socket.</td>
</tr>
<tr>
<td>EINVPARAM</td>
<td>5003</td>
<td>bad parameters.</td>
</tr>
<tr>
<td>EINVSOCK</td>
<td>5004</td>
<td>invalid UDT socket.</td>
</tr>
<tr>
<td>EUNBOUNDSOCK</td>
<td>5005</td>
<td>cannot listen on unbound socket.</td>
</tr>
<tr>
<td>ENOLISTEN</td>
<td>5006</td>
<td>(accept) socket is not in listening state.</td>
</tr>
<tr>
<td>ERDVNOSERV</td>
<td>5007</td>
<td>rendezvous connection process does not allow listen and accept call.</td>
</tr>
<tr>
<td>ERDVUNBOUND</td>
<td>5008</td>
<td>rendezvous connection setup is enabled but bind has not been called before connect.</td>
</tr>
<tr>
<td>ESTREAMILL</td>
<td>5009</td>
<td>operation not supported in SOCK_STREAM mode.</td>
</tr>
<tr>
<td>EDGRAMILL</td>
<td>5010</td>
<td>operation not supported in SOCK_DGRAM mode.</td>
</tr>
<tr>
<td>EDUPLISTEN</td>
<td>5011</td>
<td>another socket is already listening on the same UDP port.</td>
</tr>
<tr>
<td>ELARGEMSG</td>
<td>5012</td>
<td>message is too large to be hold in the sending buffer.</td>
</tr>
<tr>
<td>EASYNCFAIL</td>
<td>6000</td>
<td>non-blocking call failure.</td>
</tr>
<tr>
<td>EASYNCSND</td>
<td>6001</td>
<td>no buffer available for sending.</td>
</tr>
<tr>
<td>EASYNCRCV</td>
<td>6002</td>
<td>no data available for read.</td>
</tr>
</table>
<h5>See Also</h5>
<p><strong><a href="error.htm">getlasterror</a></strong></p>
<p> </p>
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