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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>dns.h File Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="main.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> <a class="qindex" href="globals.html">Globals</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindex" href="examples.html">Examples</a> </center><hr><h1>/opentcp/include/inet/dns/dns.h File Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2> <dl compact><dt><b>Author: </b></dt><dd> <ul><li> Vladan Jovanovic (<a href="mailto:vladan.jovanovic@violasystems.com">vladan.jovanovic@violasystems.com</a>) </ul></dl><dl compact><dt><b>Version: </b></dt><dd>1.0 </dl><dl compact><dt><b>Date: </b></dt><dd>10.9.2002</dl>OpenTCP DNS protocol function declarations, constants, etc.<p><p>Definition in file <a class="el" href="dns_8h-source.html">dns.h</a>.<p><a href="dns_8h-source.html">Go to the source code of this file.</a><table border=0 cellpadding=0 cellspacing=0><tr><td></td></tr><tr><td colspan=2><br><h2>Defines</h2></td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a0">DNS_UDP_PORT</a> 53</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a1">DNS_SERVER_IP</a> 0xac100201</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a2">DNS_RESEND_PERIOD</a> 2</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a3">DNS_NUM_RETRIES</a> 5</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a4">DNS_EVENT_ERROR</a> 0</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a5">DNS_EVENT_SUCCESS</a> 1</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a6">DNS_ERROR_FORMAT</a> 1</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a7">DNS_ERROR_SERVER_FAILURE</a> 2</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a8">DNS_ERROR_NAME_ERROR</a> 3</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a9">DNS_ERROR_NOT_IMPLEMENTED</a> 4</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a10">DNS_ERROR_REFUSED</a> 5</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a11">DNS_ERROR_TIMEOUT</a> 16</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a12">DNS_ERROR_GENERAL</a> 17</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a13">DNS_ERROR_BUSY</a> -4</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a14">DNS_ERROR_LABEL</a> -5</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a15">DNS_ERROR_NAME</a> -6</td></tr><tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="dns_8h.html#a16">DNS_ERROR_OVERFLOW</a> -7</td></tr><tr><td colspan=2><br><h2>Functions</h2></td></tr><tr><td nowrap align=right valign=top>UINT8 </td><td valign=bottom><a class="el" href="dns_8h.html#a17">get_host_by_name</a> (UINT8 *host_name_ptr, void(*listener)(UINT8, UINT32))</td></tr><tr><td> </td><td><font size=-1><em>Invokes DNS resolver.</em> <a href="#a17"></a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="dns_8h.html#a18">dns_init</a> (void)</td></tr><tr><td> </td><td><font size=-1><em>Initialize resources needed for the DNS client.</em> <a href="#a18"></a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="dns_8h.html#a19">dns_run</a> (void)</td></tr><tr><td> </td><td><font size=-1><em>DNS client main loop.</em> <a href="#a19"></a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top>INT32 </td><td valign=bottom><a class="el" href="dns_8h.html#a20">dns_eventlistener</a> (INT8, UINT8, UINT32, UINT16, UINT16, UINT16)</td></tr><tr><td> </td><td><font size=-1><em>DNS client event listener.</em> <a href="#a20"></a><em></em></font><br><br></td></tr></table><hr><h2>Define Documentation</h2><a name="a0" doxytag="dns.h::DNS_UDP_PORT"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_UDP_PORT 53 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>DNS client will use this port for sending and receiving of DNS packets <p>Definition at line <a class="el" href="dns_8h-source.html#l00069">69</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00108">dns_init()</a>, and <a class="el" href="dns_8c-source.html#l00445">get_host_by_name()</a>. </td> </tr></table><a name="a1" doxytag="dns.h::DNS_SERVER_IP"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_SERVER_IP 0xac100201 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>DNS server's IP address <p>Definition at line <a class="el" href="dns_8h-source.html#l00073">73</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00445">get_host_by_name()</a>. </td> </tr></table><a name="a2" doxytag="dns.h::DNS_RESEND_PERIOD"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_RESEND_PERIOD 2 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Period in seconds for resending DNS requests <p>Definition at line <a class="el" href="dns_8h-source.html#l00075">75</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00142">dns_retransmit()</a>, and <a class="el" href="dns_8c-source.html#l00445">get_host_by_name()</a>. </td> </tr></table><a name="a3" doxytag="dns.h::DNS_NUM_RETRIES"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_NUM_RETRIES 5 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Number of retries that DNS client will perform before aborting name resolving <p>Definition at line <a class="el" href="dns_8h-source.html#l00078">78</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00445">get_host_by_name()</a>. </td> </tr></table><a name="a4" doxytag="dns.h::DNS_EVENT_ERROR"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_EVENT_ERROR 0 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Error event reported by DNS client to event_listener <p>Definition at line <a class="el" href="dns_8h-source.html#l00084">84</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00205">dns_eventlistener()</a>, and <a class="el" href="dns_8c-source.html#l00142">dns_retransmit()</a>. </td> </tr></table><a name="a5" doxytag="dns.h::DNS_EVENT_SUCCESS"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_EVENT_SUCCESS 1 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Resolving successfull event reported by DNS client to event_listener <p>Definition at line <a class="el" href="dns_8h-source.html#l00087">87</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>.<p>Referenced by <a class="el" href="dns_8c-source.html#l00205">dns_eventlistener()</a>. </td> </tr></table><a name="a6" doxytag="dns.h::DNS_ERROR_FORMAT"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> #define DNS_ERROR_FORMAT 1 </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>The name server was unable to interpret the query (RFC1035) <p>Definition at line <a class="el" href="dns_8h-source.html#l00095">95</a> of file <a class="el" href="dns_8h-source.html">dns.h</a>. </td> </tr></table><a name="a7" doxytag="dns.h::DNS_ERROR_SERVER_FAILURE"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr>⌨️ 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