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<h1>Discovery.cc</h1><a href="Discovery_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright 2006 Baylor University</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> * you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> * You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> * See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> * limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor"># include <<a class="code" href="dtn-config_8h.html">dtn-config.h</a>></span>
<a name="l00019"></a>00019 <span class="preprocessor">#endif</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <oasys/util/Options.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <oasys/util/StringBuffer.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="Announce_8h.html">Announce.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="BluetoothDiscovery_8h.html">BluetoothDiscovery.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="BonjourDiscovery_8h.html">BonjourDiscovery.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="Discovery_8h.html">Discovery.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="IPDiscovery_8h.html">IPDiscovery.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="ContactManager_8h.html">contacts/ContactManager.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="BundleDaemon_8h.html">bundling/BundleDaemon.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">namespace </span>dtn {
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00034"></a><a class="code" href="classdtn_1_1Discovery.html#aa536748f814cdce863b347d2be9b6c5">00034</a> <a class="code" href="classdtn_1_1Discovery.html#aa536748f814cdce863b347d2be9b6c5" title="Constructor.">Discovery::Discovery</a>(<span class="keyword">const</span> std::string& name,
<a name="l00035"></a>00035 <span class="keyword">const</span> std::string& af)
<a name="l00036"></a>00036 : oasys::<a class="code" href="classoasys_1_1Logger.html">Logger</a>(<span class="stringliteral">"Discovery"</span>,<span class="stringliteral">"/dtn/discovery/%s"</span>,af.c_str()),
<a name="l00037"></a>00037 name_(name), af_(af)
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00042"></a>00042 <a class="code" href="classdtn_1_1Discovery.html" title="Abstraction of neighbor discovery agent.">Discovery</a>*
<a name="l00043"></a><a class="code" href="classdtn_1_1Discovery.html#a4db7b5f18c029eb30bf5f90a8b872a3">00043</a> <a class="code" href="classdtn_1_1Discovery.html#a4db7b5f18c029eb30bf5f90a8b872a3" title="Factory method for instantiating objects from the appropriate derived class.">Discovery::create_discovery</a>(<span class="keyword">const</span> std::string& name,
<a name="l00044"></a>00044 <span class="keyword">const</span> std::string& af,
<a name="l00045"></a>00045 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[],
<a name="l00046"></a>00046 <span class="keyword">const</span> <span class="keywordtype">char</span>** error)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <a class="code" href="classdtn_1_1Discovery.html" title="Abstraction of neighbor discovery agent.">Discovery</a>* disc = NULL;
<a name="l00049"></a>00049 <span class="keywordflow">if</span> (af == <span class="stringliteral">"ip"</span>)
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 disc = <span class="keyword">new</span> <a class="code" href="classdtn_1_1IPDiscovery.html" title="IPDiscovery is the main thread in IP-based neighbor discovery, configured via config...">IPDiscovery</a>(name);
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053 <span class="preprocessor">#ifdef OASYS_BONJOUR_ENABLED</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (af == <span class="stringliteral">"bonjour"</span>)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 disc = <span class="keyword">new</span> BonjourDiscovery(name);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 <span class="preprocessor">#endif</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#ifdef OASYS_BLUETOOTH_ENABLED </span>
<a name="l00060"></a>00060 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (af == <span class="stringliteral">"bt"</span>)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 disc = <span class="keyword">new</span> BluetoothDiscovery(name);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 <span class="preprocessor">#endif</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span> <span class="keywordflow">else</span>
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="comment">// not a recognized address family</span>
<a name="l00068"></a>00068 *error = <span class="stringliteral">"unknown address family"</span>;
<a name="l00069"></a>00069 <span class="keywordflow">return</span> NULL;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keywordflow">if</span> (! disc-><a class="code" href="classdtn_1_1Discovery.html#ddea830e6b09b41a73d98deaba7733a1" title="Configure this Discovery instance.">configure</a>(argc,argv))
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <span class="keyword">delete</span> disc;
<a name="l00075"></a>00075 <span class="keywordflow">return</span> NULL;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">return</span> disc;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00082"></a><a class="code" href="classdtn_1_1Discovery.html#aaadd0d123505014b40b619f68649f1a">00082</a> <a class="code" href="classdtn_1_1Discovery.html#aaadd0d123505014b40b619f68649f1a">Discovery::~Discovery</a>()
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="keywordflow">for</span> (<a class="code" href="classdtn_1_1Discovery.html#e046ec0e0ebde9cf34e14d94e56ea3bf">iterator</a> i = <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.begin(); i != <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.end(); i++)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keyword">delete</span> (*i);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00091"></a>00091 <span class="keywordtype">void</span>
<a name="l00092"></a><a class="code" href="classdtn_1_1Discovery.html#a380c76912923a5a2f5ead66d92f2259">00092</a> <a class="code" href="classdtn_1_1Discovery.html#a380c76912923a5a2f5ead66d92f2259" title="Append snapshot of object state to StringBuffer.">Discovery::dump</a>(oasys::StringBuffer* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 buf->appendf(<span class="stringliteral">"%s af %s: %zu announce %s\n"</span>,
<a name="l00095"></a>00095 <a class="code" href="classdtn_1_1Discovery.html#d4185c5818cecaa562007ceffe6094be" title="name of discovery agent">name_</a>.c_str(),<a class="code" href="classdtn_1_1Discovery.html#7f8f0dea257fee3d3c6b3518b46c8ac0" title="address family">af_</a>.c_str(),<a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.size(),<a class="code" href="classdtn_1_1Discovery.html#57590a19bd9c6b2502d336e5d6ac1f2f" title="outbound address of advertisements sent">to_addr_</a>.c_str());
<a name="l00096"></a>00096 <span class="keywordflow">for</span> (<a class="code" href="classdtn_1_1Discovery.html#e046ec0e0ebde9cf34e14d94e56ea3bf">iterator</a> i = <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.begin(); i != <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.end(); i++)
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 buf->appendf(<span class="stringliteral">"\tannounce %s type %s advertising %s every %d sec\n"</span>,
<a name="l00099"></a>00099 (*i)->name().c_str(),
<a name="l00100"></a>00100 (*i)->type().c_str(),
<a name="l00101"></a>00101 (*i)->local_addr().c_str(),
<a name="l00102"></a>00102 (*i)->interval()/1000);
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00107"></a>00107 <span class="keywordtype">bool</span>
<a name="l00108"></a><a class="code" href="classdtn_1_1Discovery.html#17302a43a3e0ee32249b9fbc9b58e1f8">00108</a> <a class="code" href="classdtn_1_1Discovery.html#17302a43a3e0ee32249b9fbc9b58e1f8" title="Register an Announce to advertise a local convergence layer and to respond to advertisements...">Discovery::announce</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[])
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <a class="code" href="classdtn_1_1Discovery.html#e046ec0e0ebde9cf34e14d94e56ea3bf">iterator</a> iter;
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1Discovery.html#2194b4baca2e632b1f4335c02ae33344" title="Find a registration by name.">find</a>(name,&iter))
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 log_err(<span class="stringliteral">"discovery for %s already exists"</span>,name);
<a name="l00114"></a>00114 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (argc < 1)
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 log_err(<span class="stringliteral">"cl type not specified"</span>);
<a name="l00120"></a>00120 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keyword">const</span> <span class="keywordtype">char</span>* cltype = argv[0];
<a name="l00124"></a>00124 <a class="code" href="classdtn_1_1ConvergenceLayer.html" title="The abstract interface for a convergence layer.">ConvergenceLayer</a>* cl = <a class="code" href="classdtn_1_1ConvergenceLayer.html#6259b19bef1dd17295030b33c44c29d0" title="Find the appropriate convergence layer for the given string.">ConvergenceLayer::find_clayer</a>(cltype);
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (cl == NULL)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 log_err(<span class="stringliteral">"invalid convergence layer type (%s)"</span>,cltype);
<a name="l00128"></a>00128 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <a class="code" href="classdtn_1_1Announce.html" title="Announce represents a ConvergenceLayer (Interface).">Announce</a>* <a class="code" href="classdtn_1_1Discovery.html#17302a43a3e0ee32249b9fbc9b58e1f8" title="Register an Announce to advertise a local convergence layer and to respond to advertisements...">announce</a> = <a class="code" href="classdtn_1_1Announce.html#01b945f189453cdd16eefaa50f2e2dab" title="Factory method for creating instances of derived classes.">Announce::create_announce</a>(name,cl,argc,argv);
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (announce == NULL)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 log_err(<span class="stringliteral">"no announce implemented for %s convergence layer"</span>,cltype);
<a name="l00135"></a>00135 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.push_back(announce);
<a name="l00139"></a>00139 <span class="comment">// alert derived classes to new registration</span>
<a name="l00140"></a>00140 <a class="code" href="classdtn_1_1Discovery.html#08dc1eadc966b0cd59ee5fcc11b8d0d8" title="Optional handler for new Announce registration.">handle_announce</a>();
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00146"></a>00146 <span class="keywordtype">bool</span>
<a name="l00147"></a><a class="code" href="classdtn_1_1Discovery.html#a176e99fdc0426d8cb6bbb75e9e34b0c">00147</a> <a class="code" href="classdtn_1_1Discovery.html#a176e99fdc0426d8cb6bbb75e9e34b0c" title="Remove registration for named announce object.">Discovery::remove</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* name)
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <a class="code" href="classdtn_1_1Discovery.html#e046ec0e0ebde9cf34e14d94e56ea3bf">iterator</a> iter;
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (! <a class="code" href="classdtn_1_1Discovery.html#2194b4baca2e632b1f4335c02ae33344" title="Find a registration by name.">find</a>(name,&iter))
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 log_err(<span class="stringliteral">"error removing announce %s: no such object"</span>,name);
<a name="l00154"></a>00154 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <a class="code" href="classdtn_1_1Announce.html" title="Announce represents a ConvergenceLayer (Interface).">Announce</a> *<a class="code" href="classdtn_1_1Discovery.html#17302a43a3e0ee32249b9fbc9b58e1f8" title="Register an Announce to advertise a local convergence layer and to respond to advertisements...">announce</a> = *iter;
<a name="l00158"></a>00158 <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.erase(iter);
<a name="l00159"></a>00159 <span class="keyword">delete</span> announce;
<a name="l00160"></a>00160 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00164"></a>00164 <span class="keywordtype">bool</span>
<a name="l00165"></a><a class="code" href="classdtn_1_1Discovery.html#2194b4baca2e632b1f4335c02ae33344">00165</a> <a class="code" href="classdtn_1_1Discovery.html#2194b4baca2e632b1f4335c02ae33344" title="Find a registration by name.">Discovery::find</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <a class="code" href="classdtn_1_1Discovery.html#e046ec0e0ebde9cf34e14d94e56ea3bf">Discovery::iterator</a>* iter)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 <a class="code" href="classdtn_1_1Announce.html" title="Announce represents a ConvergenceLayer (Interface).">Announce</a>* <a class="code" href="classdtn_1_1Discovery.html#17302a43a3e0ee32249b9fbc9b58e1f8" title="Register an Announce to advertise a local convergence layer and to respond to advertisements...">announce</a>;
<a name="l00168"></a>00168 <span class="keywordflow">for</span> (*iter = <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.begin(); *iter != <a class="code" href="classdtn_1_1Discovery.html#7fb0c15e93e20fccdf1bb439aefa34e3" title="registered Announce objects">list_</a>.end(); (*iter)++)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 announce = **iter;
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (announce-><a class="code" href="classdtn_1_1Announce.html#7cea29d4c3796920f6d8cb4c943570eb" title="The name of this Announce instance.">name</a>() == name)
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00180"></a>00180 <span class="keywordtype">void</span>
<a name="l00181"></a><a class="code" href="classdtn_1_1Discovery.html#6b6da97e92e834b9997b9fc2812fe74b">00181</a> <a class="code" href="classdtn_1_1Discovery.html#6b6da97e92e834b9997b9fc2812fe74b" title="Handle neighbor discovery out to registered DiscoveryInfo objects.">Discovery::handle_neighbor_discovered</a>(<span class="keyword">const</span> std::string& cl_type,
<a name="l00182"></a>00182 <span class="keyword">const</span> std::string& cl_addr,
<a name="l00183"></a>00183 <span class="keyword">const</span> <a class="code" href="classdtn_1_1EndpointID.html">EndpointID</a>& remote_eid)
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <a class="code" href="classdtn_1_1ContactManager.html" title="A contact manager class.">ContactManager</a>* cm = BundleDaemon::instance()->contactmgr();
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <a class="code" href="classdtn_1_1ConvergenceLayer.html" title="The abstract interface for a convergence layer.">ConvergenceLayer</a>* cl = <a class="code" href="classdtn_1_1ConvergenceLayer.html#6259b19bef1dd17295030b33c44c29d0" title="Find the appropriate convergence layer for the given string.">ConvergenceLayer::find_clayer</a>(cl_type.c_str());
<a name="l00188"></a>00188 <span class="keywordflow">if</span> (cl == NULL) {
<a name="l00189"></a>00189 log_err(<span class="stringliteral">"handle_neighbor_discovered: "</span>
<a name="l00190"></a>00190 <span class="stringliteral">"unknown convergence layer type '%s'"</span>, cl_type.c_str());
<a name="l00191"></a>00191 <span class="keywordflow">return</span>;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="comment">// Look for match on convergence layer and remote EID</span>
<a name="l00195"></a>00195 <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a> link(<span class="stringliteral">"Announce::handle_neighbor_discovered"</span>);
<a name="l00196"></a>00196 link = cm-><a class="code" href="classdtn_1_1ContactManager.html#d6123f2dcfbba11d95100eb3cfb714bf" title="Helper routine to find a link based on criteria:.">find_link_to</a>(cl, <span class="stringliteral">""</span>, remote_eid);
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (link == NULL) {
<a name="l00199"></a>00199 link = cm-><a class="code" href="classdtn_1_1ContactManager.html#a0e0738c54cc947fb03f765f3afcb03c" title="Notification from a convergence layer that a new opportunistic link has come knocking...">new_opportunistic_link</a>(cl, cl_addr, remote_eid);
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (link == NULL) {
<a name="l00201"></a>00201 log_debug(<span class="stringliteral">"Discovery::handle_neighbor_discovered: "</span>
<a name="l00202"></a>00202 <span class="stringliteral">"failed to create opportunistic link"</span>);
<a name="l00203"></a>00203 <span class="keywordflow">return</span>;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (!link->isavailable())
<a name="l00210"></a>00210 {
<a name="l00211"></a>00211 <span class="comment">// request to set link available</span>
<a name="l00212"></a>00212 <a class="code" href="classdtn_1_1BundleDaemon.html#370a80f7dd9fd9297e76d7f830d737a8" title="Queues the event at the tail of the queue for processing by the daemon thread.">BundleDaemon::post</a>(
<a name="l00213"></a>00213 <span class="keyword">new</span> <a class="code" href="classdtn_1_1LinkStateChangeRequest.html" title="Request class for link state change requests that are sent to the daemon thread for...">LinkStateChangeRequest</a>(link, <a class="code" href="classdtn_1_1Link.html#1bf2479a21276737f73204a3c46508a36a3d11409342e7987b0ffe9c532d6e51" title="The link is closed but is able to be opened, either because it is an on demand link...">Link::AVAILABLE</a>,
<a name="l00214"></a>00214 <a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7648efe2b249ca6cd507125d819392b8d" title="Dynamically discovered link.">ContactEvent::DISCOVERY</a>)
<a name="l00215"></a>00215 );
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 } <span class="comment">// namespace dtn</span>
</pre></div></div>
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