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<h1>UDPConvergenceLayer.cc</h1><a href="UDPConvergenceLayer_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 2004-2006 Intel Corporation</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 <sys/poll.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include <oasys/io/NetUtils.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <oasys/thread/Timer.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <oasys/util/OptParser.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <oasys/util/StringBuffer.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="UDPConvergenceLayer_8h.html">UDPConvergenceLayer.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="bundling_2Bundle_8h.html">bundling/Bundle.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="BundleEvent_8h.html">bundling/BundleEvent.h</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="BundleDaemon_8h.html">bundling/BundleDaemon.h</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="bundling_2BundleList_8h.html">bundling/BundleList.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="BundleProtocol_8h.html">bundling/BundleProtocol.h</a>"</span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">namespace </span>dtn {
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="keyword">struct </span>UDPConvergenceLayer::Params UDPConvergenceLayer::defaults_;
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00040"></a>00040 void
<a name="l00041"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#839f496d9f3f6ce22dd26002acd87dfd">00041</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html">UDPConvergenceLayer</a>::<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>::serialize(oasys::SerializeAction *a)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 a->process(<span class="stringliteral">"local_addr"</span>, oasys::InAddrPtr(&<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a>));
<a name="l00044"></a>00044 a->process(<span class="stringliteral">"remote_addr"</span>, oasys::InAddrPtr(&<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#05ffff973553a5febefdd62e2884b307" title="Peer address to connect to.">remote_addr_</a>));
<a name="l00045"></a>00045 a->process(<span class="stringliteral">"local_port"</span>, &<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a>);
<a name="l00046"></a>00046 a->process(<span class="stringliteral">"remote_port"</span>, &<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#ba042a8f8bc5cfc86cb3857219e45aef" title="Peer port to connect to.">remote_port_</a>);
<a name="l00047"></a>00047 a->process(<span class="stringliteral">"rate"</span>, &<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#19a2258ac6c67e72f19838abe6055f41" title="Rate (in bps).">rate_</a>);
<a name="l00048"></a>00048 a->process(<span class="stringliteral">"bucket_depth"</span>, &<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#4b7cd34b5132e2fc0a7c1da66174648f" title="Token bucket depth (in bits).">bucket_depth_</a>);
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00052"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#ba060a90aff459670a038507bc6eaf27">00052</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#ba060a90aff459670a038507bc6eaf27" title="Constructor.">UDPConvergenceLayer::UDPConvergenceLayer</a>()
<a name="l00053"></a>00053 : <a class="code" href="classdtn_1_1IPConvergenceLayer.html" title="Base class for shared functionality between the TCP and UDP convergence layers (currently...">IPConvergenceLayer</a>(<span class="stringliteral">"UDPConvergenceLayer"</span>, <span class="stringliteral">"udp"</span>)
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a> = INADDR_ANY;
<a name="l00056"></a>00056 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a> = <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#640804ad7d940853a50f3f0bbe6ec383" title="Default port used by the udp cl.">UDPCL_DEFAULT_PORT</a>;
<a name="l00057"></a>00057 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#05ffff973553a5febefdd62e2884b307" title="Peer address to connect to.">remote_addr_</a> = INADDR_NONE;
<a name="l00058"></a>00058 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#ba042a8f8bc5cfc86cb3857219e45aef" title="Peer port to connect to.">remote_port_</a> = 0;
<a name="l00059"></a>00059 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#19a2258ac6c67e72f19838abe6055f41" title="Rate (in bps).">rate_</a> = 0; <span class="comment">// unlimited</span>
<a name="l00060"></a>00060 <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>.<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#4b7cd34b5132e2fc0a7c1da66174648f" title="Token bucket depth (in bits).">bucket_depth_</a> = 0; <span class="comment">// default</span>
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00064"></a>00064 <span class="keywordtype">bool</span>
<a name="l00065"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#f8a83f57fdb07d33399fac56c7913616">00065</a> UDPConvergenceLayer::parse_params(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params,
<a name="l00066"></a>00066 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>** argv,
<a name="l00067"></a>00067 <span class="keyword">const</span> <span class="keywordtype">char</span>** invalidp)
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 oasys::OptParser p;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 p.addopt(<span class="keyword">new</span> oasys::InAddrOpt(<span class="stringliteral">"local_addr"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a>));
<a name="l00072"></a>00072 p.addopt(<span class="keyword">new</span> oasys::UInt16Opt(<span class="stringliteral">"local_port"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a>));
<a name="l00073"></a>00073 p.addopt(<span class="keyword">new</span> oasys::InAddrOpt(<span class="stringliteral">"remote_addr"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#05ffff973553a5febefdd62e2884b307" title="Peer address to connect to.">remote_addr_</a>));
<a name="l00074"></a>00074 p.addopt(<span class="keyword">new</span> oasys::UInt16Opt(<span class="stringliteral">"remote_port"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#ba042a8f8bc5cfc86cb3857219e45aef" title="Peer port to connect to.">remote_port_</a>));
<a name="l00075"></a>00075 p.addopt(<span class="keyword">new</span> oasys::UIntOpt(<span class="stringliteral">"rate"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#19a2258ac6c67e72f19838abe6055f41" title="Rate (in bps).">rate_</a>));
<a name="l00076"></a>00076 p.addopt(<span class="keyword">new</span> oasys::UIntOpt(<span class="stringliteral">"bucket_depth_"</span>, &params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#4b7cd34b5132e2fc0a7c1da66174648f" title="Token bucket depth (in bits).">bucket_depth_</a>));
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (! p.parse(argc, argv, invalidp)) {
<a name="l00079"></a>00079 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00083"></a>00083 };
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00086"></a>00086 <span class="keywordtype">bool</span>
<a name="l00087"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#d469954cd84f63fc4d54e4d5b7791576">00087</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#d469954cd84f63fc4d54e4d5b7791576" title="Bring up a new interface.">UDPConvergenceLayer::interface_up</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface,
<a name="l00088"></a>00088 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[])
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 log_debug(<span class="stringliteral">"adding interface %s"</span>, iface-><a class="code" href="classdtn_1_1Interface.html#dc2636c7e82f1fc234679eb3983be95a">name</a>().c_str());
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">// parse options (including overrides for the local_addr and</span>
<a name="l00093"></a>00093 <span class="comment">// local_port settings from the defaults)</span>
<a name="l00094"></a>00094 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a> params = <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">UDPConvergenceLayer::defaults_</a>;
<a name="l00095"></a>00095 <span class="keyword">const</span> <span class="keywordtype">char</span>* invalid;
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (!<a class="code" href="classdtn_1_1UDPConvergenceLayer.html#f8a83f57fdb07d33399fac56c7913616">parse_params</a>(&params, argc, argv, &invalid)) {
<a name="l00097"></a>00097 log_err(<span class="stringliteral">"error parsing interface options: invalid option '%s'"</span>,
<a name="l00098"></a>00098 invalid);
<a name="l00099"></a>00099 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// check that the local interface / port are valid</span>
<a name="l00103"></a>00103 <span class="keywordflow">if</span> (params.local_addr_ == INADDR_NONE) {
<a name="l00104"></a>00104 log_err(<span class="stringliteral">"invalid local address setting of 0"</span>);
<a name="l00105"></a>00105 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (params.local_port_ == 0) {
<a name="l00109"></a>00109 log_err(<span class="stringliteral">"invalid local port setting of 0"</span>);
<a name="l00110"></a>00110 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="comment">// create a new server socket for the requested interface</span>
<a name="l00114"></a>00114 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html" title="Helper class (and thread) that listens on a registered interface for incoming data...">Receiver</a>* receiver = <span class="keyword">new</span> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html" title="Helper class (and thread) that listens on a registered interface for incoming data...">Receiver</a>(&params);
<a name="l00115"></a>00115 receiver->logpathf(<span class="stringliteral">"%s/iface/%s"</span>, logpath_, iface-><a class="code" href="classdtn_1_1Interface.html#dc2636c7e82f1fc234679eb3983be95a">name</a>().c_str());
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (receiver->bind(params.local_addr_, params.local_port_) != 0) {
<a name="l00118"></a>00118 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// error log already emitted</span>
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">// check if the user specified a remote addr/port to connect to</span>
<a name="l00122"></a>00122 <span class="keywordflow">if</span> (params.remote_addr_ != INADDR_NONE) {
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (receiver->connect(params.remote_addr_, params.remote_port_) != 0) {
<a name="l00124"></a>00124 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// error log already emitted</span>
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">// start the thread which automatically listens for data</span>
<a name="l00129"></a>00129 receiver->start();
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// store the new listener object in the cl specific portion of the</span>
<a name="l00132"></a>00132 <span class="comment">// interface</span>
<a name="l00133"></a>00133 iface-><a class="code" href="classdtn_1_1Interface.html#04979810a90c508de3557961cfd9f022" title="Store the ConvergenceLayer specific state.">set_cl_info</a>(receiver);
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00139"></a>00139 <span class="keywordtype">bool</span>
<a name="l00140"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#165757de59ab4932803cd4ff8e427565">00140</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#165757de59ab4932803cd4ff8e427565" title="Bring down the interface.">UDPConvergenceLayer::interface_down</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface)
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 <span class="comment">// grab the listener object, set a flag for the thread to stop and</span>
<a name="l00143"></a>00143 <span class="comment">// then close the socket out from under it, which should cause the</span>
<a name="l00144"></a>00144 <span class="comment">// thread to break out of the blocking call to accept() and</span>
<a name="l00145"></a>00145 <span class="comment">// terminate itself</span>
<a name="l00146"></a>00146 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html" title="Helper class (and thread) that listens on a registered interface for incoming data...">Receiver</a>* receiver = (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html" title="Helper class (and thread) that listens on a registered interface for incoming data...">Receiver</a>*)iface-><a class="code" href="classdtn_1_1Interface.html#cd9858714c6404a4e8b37e15cf3241a2">cl_info</a>();
<a name="l00147"></a>00147 receiver->set_should_stop();
<a name="l00148"></a>00148 receiver->interrupt_from_io();
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keywordflow">while</span> (! receiver->is_stopped()) {
<a name="l00151"></a>00151 oasys::Thread::yield();
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keyword">delete</span> receiver;
<a name="l00155"></a>00155 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00159"></a>00159 <span class="keywordtype">void</span>
<a name="l00160"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#a6699e8acacbd6f0b36606e36338a7fa">00160</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#a6699e8acacbd6f0b36606e36338a7fa" title="Dump out CL specific interface information.">UDPConvergenceLayer::dump_interface</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface,
<a name="l00161"></a>00161 oasys::StringBuffer* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>)
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params = &((<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html" title="Helper class (and thread) that listens on a registered interface for incoming data...">Receiver</a>*)iface-><a class="code" href="classdtn_1_1Interface.html#cd9858714c6404a4e8b37e15cf3241a2">cl_info</a>())->params_;
<a name="l00164"></a>00164
<a name="l00165"></a>00165 buf->appendf(<span class="stringliteral">"\tlocal_addr: %s local_port: %d\n"</span>,
<a name="l00166"></a>00166 intoa(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a>), params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a>);
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#05ffff973553a5febefdd62e2884b307" title="Peer address to connect to.">remote_addr_</a> != INADDR_NONE) {
<a name="l00169"></a>00169 buf->appendf(<span class="stringliteral">"\tconnected remote_addr: %s remote_port: %d\n"</span>,
<a name="l00170"></a>00170 intoa(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#05ffff973553a5febefdd62e2884b307" title="Peer address to connect to.">remote_addr_</a>), params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#ba042a8f8bc5cfc86cb3857219e45aef" title="Peer port to connect to.">remote_port_</a>);
<a name="l00171"></a>00171 } <span class="keywordflow">else</span> {
<a name="l00172"></a>00172 buf->appendf(<span class="stringliteral">"\tnot connected\n"</span>);
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00177"></a>00177 <span class="keywordtype">bool</span>
<a name="l00178"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#adfe99161cd707afd2af73b1db9d6ba3">00178</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#adfe99161cd707afd2af73b1db9d6ba3" title="Create any CL-specific components of the Link.">UDPConvergenceLayer::init_link</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link,
<a name="l00179"></a>00179 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[])
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 in_addr_t addr;
<a name="l00182"></a>00182 u_int16_t port = 0;
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00185"></a>00185 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00186"></a>00186 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link->cl_info() == NULL);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 log_debug(<span class="stringliteral">"adding %s link %s"</span>, link->type_str(), link->nexthop());
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="comment">// Parse the nexthop address but don't bail if the parsing fails,</span>
<a name="l00191"></a>00191 <span class="comment">// since the remote host may not be resolvable at initialization</span>
<a name="l00192"></a>00192 <span class="comment">// time and we retry in open_contact</span>
<a name="l00193"></a>00193 <a class="code" href="classdtn_1_1IPConvergenceLayer.html#083fe107cf322864a93d727542697fc8" title="Parse a next hop address specification of the form &lt;host&gt;[:&lt;port&gt;?].">parse_nexthop</a>(link->nexthop(), &addr, &port);
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="comment">// Create a new parameters structure, parse the options, and store</span>
<a name="l00196"></a>00196 <span class="comment">// them in the link's cl info slot</span>
<a name="l00197"></a>00197 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params = <span class="keyword">new</span> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>(<a class="code" href="classdtn_1_1UDPConvergenceLayer.html#74dd78fe6f434438daceab7d0ef3cf23" title="Default parameters.">defaults_</a>);
<a name="l00198"></a>00198 params->local_addr_ = INADDR_NONE;
<a name="l00199"></a>00199 params->local_port_ = 0;
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="keyword">const</span> <span class="keywordtype">char</span>* invalid;
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (! <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#f8a83f57fdb07d33399fac56c7913616">parse_params</a>(params, argc, argv, &invalid)) {
<a name="l00203"></a>00203 log_err(<span class="stringliteral">"error parsing link options: invalid option '%s'"</span>, invalid);
<a name="l00204"></a>00204 <span class="keyword">delete</span> params;
<a name="l00205"></a>00205 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keywordflow">if</span> (link->params().mtu_ > <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#76e985ed36150909b585c14e3c14c242" title="Maximum bundle size.">MAX_BUNDLE_LEN</a>) {
<a name="l00209"></a>00209 log_err(<span class="stringliteral">"error parsing link options: mtu %d > maximum %d"</span>,
<a name="l00210"></a>00210 link->params().mtu_, <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#76e985ed36150909b585c14e3c14c242" title="Maximum bundle size.">MAX_BUNDLE_LEN</a>);
<a name="l00211"></a>00211 <span class="keyword">delete</span> params;
<a name="l00212"></a>00212 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215 link->set_cl_info(params);
<a name="l00216"></a>00216 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00220"></a>00220 <span class="keywordtype">void</span>
<a name="l00221"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#85d4c12ec68ce3a65fcdbbe1ce9ef615">00221</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#85d4c12ec68ce3a65fcdbbe1ce9ef615" title="Delete any CL-specific components of the Link.">UDPConvergenceLayer::delete_link</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link)
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00224"></a>00224 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00225"></a>00225 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link->cl_info() != NULL);
<a name="l00226"></a>00226
<a name="l00227"></a>00227 log_debug(<span class="stringliteral">"UDPConvergenceLayer::delete_link: "</span>
<a name="l00228"></a>00228 <span class="stringliteral">"deleting link %s"</span>, link->name());
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="keyword">delete</span> link->cl_info();
<a name="l00231"></a>00231 link->set_cl_info(NULL);
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00235"></a>00235 <span class="keywordtype">void</span>
<a name="l00236"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#6c618838bac1a95b47dc287f75d2348b">00236</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#6c618838bac1a95b47dc287f75d2348b" title="Dump out CL specific link information.">UDPConvergenceLayer::dump_link</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link, oasys::StringBuffer* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>)
<a name="l00237"></a>00237 {
<a name="l00238"></a>00238 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00239"></a>00239 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00240"></a>00240 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link->cl_info() != NULL);
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params = (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>*)link->cl_info();
<a name="l00243"></a>00243
<a name="l00244"></a>00244 buf->appendf(<span class="stringliteral">"\tlocal_addr: %s local_port: %d\n"</span>,
<a name="l00245"></a>00245 intoa(params->local_addr_), params->local_port_);
<a name="l00246"></a>00246
<a name="l00247"></a>00247 buf->appendf(<span class="stringliteral">"\tremote_addr: %s remote_port: %d\n"</span>,
<a name="l00248"></a>00248 intoa(params->remote_addr_), params->remote_port_);
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00252"></a>00252 <span class="keywordtype">bool</span>
<a name="l00253"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#8894dcd4655c2431526dc2d889f23dc2">00253</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#8894dcd4655c2431526dc2d889f23dc2" title="Open the connection to a given contact and send/listen for bundles over this contact...">UDPConvergenceLayer::open_contact</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#5f869544c85c75b5a85a14d6e90d7ff7" title="Typedef for a reference on a contact.">ContactRef</a>& contact)
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255 in_addr_t addr;
<a name="l00256"></a>00256 u_int16_t port;
<a name="l00257"></a>00257
<a name="l00258"></a>00258 <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a> link = contact->link();
<a name="l00259"></a>00259 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00260"></a>00260 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00261"></a>00261 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link->cl_info() != NULL);
<a name="l00262"></a>00262
<a name="l00263"></a>00263 log_debug(<span class="stringliteral">"UDPConvergenceLayer::open_contact: "</span>
<a name="l00264"></a>00264 <span class="stringliteral">"opening contact for link *%p"</span>, link.object());
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="comment">// parse out the address / port from the nexthop address</span>
<a name="l00267"></a>00267 <span class="keywordflow">if</span> (! <a class="code" href="classdtn_1_1IPConvergenceLayer.html#083fe107cf322864a93d727542697fc8" title="Parse a next hop address specification of the form &lt;host&gt;[:&lt;port&gt;?].">parse_nexthop</a>(link->nexthop(), &addr, &port)) {
<a name="l00268"></a>00268 log_err(<span class="stringliteral">"invalid next hop address '%s'"</span>, link->nexthop());
<a name="l00269"></a>00269 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00272"></a>00272 <span class="comment">// make sure it's really a valid address</span>
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (addr == INADDR_ANY || addr == INADDR_NONE) {
<a name="l00274"></a>00274 log_err(<span class="stringliteral">"can't lookup hostname in next hop address '%s'"</span>,
<a name="l00275"></a>00275 link->nexthop());
<a name="l00276"></a>00276 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00277"></a>00277 }
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <span class="comment">// if the port wasn't specified, use the default</span>
<a name="l00280"></a>00280 <span class="keywordflow">if</span> (port == 0) {
<a name="l00281"></a>00281 port = <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#640804ad7d940853a50f3f0bbe6ec383" title="Default port used by the udp cl.">UDPCL_DEFAULT_PORT</a>;
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params = (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>*)link->cl_info();
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="comment">// create a new sender structure</span>
<a name="l00287"></a>00287 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>* sender = <span class="keyword">new</span> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>(link->contact());
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keywordflow">if</span> (!sender-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c6315762354be592f3706ab4625d6f2a" title="Initialize the sender (the &quot;real&quot; constructor).">init</a>(params, addr, port)) {
<a name="l00290"></a>00290 log_err(<span class="stringliteral">"error initializing contact"</span>);
<a name="l00291"></a>00291 <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="l00292"></a>00292 <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#1bf2479a21276737f73204a3c46508a3fcb80aea04644bdc565b13fa371b2e1e" title="The link is closed and not able to be opened currently.">Link::UNAVAILABLE</a>,
<a name="l00293"></a>00293 <a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7745e7897b68d73fa05257424c8746ded" title="No additional info.">ContactEvent::NO_INFO</a>));
<a name="l00294"></a>00294 <span class="keyword">delete</span> sender;
<a name="l00295"></a>00295 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 contact->set_cl_info(sender);
<a name="l00299"></a>00299 <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>(<span class="keyword">new</span> <a class="code" href="classdtn_1_1ContactUpEvent.html" title="Event class for contact up events.">ContactUpEvent</a>(link->contact()));
<a name="l00300"></a>00300
<a name="l00301"></a>00301 <span class="comment">// XXX/demmer should this assert that there's nothing on the link</span>
<a name="l00302"></a>00302 <span class="comment">// queue??</span>
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00305"></a>00305 }
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00308"></a>00308 <span class="keywordtype">bool</span>
<a name="l00309"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#4bbdc393d363df910b750df5b1e95239">00309</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#4bbdc393d363df910b750df5b1e95239" title="Close the connnection to the contact.">UDPConvergenceLayer::close_contact</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#5f869544c85c75b5a85a14d6e90d7ff7" title="Typedef for a reference on a contact.">ContactRef</a>& contact)
<a name="l00310"></a>00310 {
<a name="l00311"></a>00311 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>* sender = (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>*)contact->cl_info();
<a name="l00312"></a>00312
<a name="l00313"></a>00313 log_info(<span class="stringliteral">"close_contact *%p"</span>, contact.object());
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="keywordflow">if</span> (sender) {
<a name="l00316"></a>00316 <span class="keyword">delete</span> sender;
<a name="l00317"></a>00317 contact->set_cl_info(NULL);
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00324"></a>00324 <span class="keywordtype">void</span>
<a name="l00325"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer.html#b76259ac842a61d33663c376b2fa2509">00325</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#b76259ac842a61d33663c376b2fa2509" title="Send the bundle out the link.">UDPConvergenceLayer::bundle_queued</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>& link, <span class="keyword">const</span> <a class="code" href="namespacedtn.html#87094f3b26b9f1d469e616d311ae57b1" title="Class definition for a Bundle reference.">BundleRef</a>& bundle)
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00328"></a>00328 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00329"></a>00329
<a name="l00330"></a>00330 <span class="keyword">const</span> <a class="code" href="namespacedtn.html#5f869544c85c75b5a85a14d6e90d7ff7" title="Typedef for a reference on a contact.">ContactRef</a>& contact = link->contact();
<a name="l00331"></a>00331 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>* sender = (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html">Sender</a>*)contact->cl_info();
<a name="l00332"></a>00332 <span class="keywordflow">if</span> (!sender) {
<a name="l00333"></a>00333 log_crit(<span class="stringliteral">"send_bundles called on contact *%p with no Sender!!"</span>,
<a name="l00334"></a>00334 contact.object());
<a name="l00335"></a>00335 <span class="keywordflow">return</span>;
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(contact == sender-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#ddd3e4252cd3a35f7fe463531f0ea6e2" title="The contact that we&#39;re representing.">contact_</a>);
<a name="l00338"></a>00338
<a name="l00339"></a>00339 <span class="keywordtype">int</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> = sender-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#91a88f720ab7bce40b253bdf99da4041" title="Send one bundle.">send_bundle</a>(bundle);
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <span class="keywordflow">if</span> (len > 0) {
<a name="l00342"></a>00342 link->del_from_queue(bundle, len);
<a name="l00343"></a>00343 link->add_to_inflight(bundle, len);
<a name="l00344"></a>00344 <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="l00345"></a>00345 <span class="keyword">new</span> <a class="code" href="classdtn_1_1BundleTransmittedEvent.html" title="Event class for bundle or fragment transmission.">BundleTransmittedEvent</a>(bundle.object(), contact, link, len, 0));
<a name="l00346"></a>00346 }
<a name="l00347"></a>00347 }
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00350"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#44eeb5e29f8f038b6187635133e0d3fd">00350</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#44eeb5e29f8f038b6187635133e0d3fd" title="Constructor.">UDPConvergenceLayer::Receiver::Receiver</a>(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">UDPConvergenceLayer::Params</a>* params)
<a name="l00351"></a>00351 : IOHandlerBase(new oasys::Notifier(<span class="stringliteral">"/dtn/cl/udp/receiver"</span>)),
<a name="l00352"></a>00352 UDPClient(<span class="stringliteral">"/dtn/cl/udp/receiver"</span>),
<a name="l00353"></a>00353 Thread(<span class="stringliteral">"UDPConvergenceLayer::Receiver"</span>)
<a name="l00354"></a>00354 {
<a name="l00355"></a>00355 logfd_ = <span class="keyword">false</span>;
<a name="l00356"></a>00356 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#6576c15a56a66c4710ad63207ead02e3">params_</a> = *params;
<a name="l00357"></a>00357 }
<a name="l00358"></a>00358
<a name="l00359"></a>00359 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00360"></a>00360 <span class="keywordtype">void</span>
<a name="l00361"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#ddcc5ebc7f6ff41694c3ebb4cadf102e">00361</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#ddcc5ebc7f6ff41694c3ebb4cadf102e" title="Handler to process an arrived packet.">UDPConvergenceLayer::Receiver::process_data</a>(u_char* bp, <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>)
<a name="l00362"></a>00362 {
<a name="l00363"></a>00363 <span class="comment">// the payload should contain a full bundle</span>
<a name="l00364"></a>00364 <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle = <span class="keyword">new</span> <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>();
<a name="l00365"></a>00365
<a name="l00366"></a>00366 <span class="keywordtype">bool</span> complete = <span class="keyword">false</span>;
<a name="l00367"></a>00367 <span class="keywordtype">int</span> cc = <a class="code" href="classdtn_1_1BundleProtocol.html#b1641c2fd8771fbda02c9ee59a1474df" title="Parse the supplied chunk of arriving data and append it to the rcvd_blocks_ list...">BundleProtocol::consume</a>(bundle, bp, len, &complete);
<a name="l00368"></a>00368
<a name="l00369"></a>00369 <span class="keywordflow">if</span> (cc < 0) {
<a name="l00370"></a>00370 log_err(<span class="stringliteral">"process_data: bundle protocol error"</span>);
<a name="l00371"></a>00371 <span class="keyword">delete</span> bundle;
<a name="l00372"></a>00372 <span class="keywordflow">return</span>;
<a name="l00373"></a>00373 }
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <span class="keywordflow">if</span> (!complete) {
<a name="l00376"></a>00376 log_err(<span class="stringliteral">"process_data: incomplete bundle"</span>);
<a name="l00377"></a>00377 <span class="keyword">delete</span> bundle;
<a name="l00378"></a>00378 <span class="keywordflow">return</span>;
<a name="l00379"></a>00379 }
<a name="l00380"></a>00380
<a name="l00381"></a>00381 log_debug(<span class="stringliteral">"process_data: new bundle id %d arrival, length %zu (payload %zu)"</span>,
<a name="l00382"></a>00382 bundle-><a class="code" href="classdtn_1_1Bundle.html#7031e2e5e4078445bf4ad39cdcdea3b2" title="Accessors.">bundleid</a>(), len, bundle-><a class="code" href="classdtn_1_1Bundle.html#3bc0b88b547620b4029eba4809a73447" title="Accessors.">payload</a>().<a class="code" href="classdtn_1_1BundlePayload.html#56b3851ad789c4dbf019a32d557b7453" title="The payload length.">length</a>());
<a name="l00383"></a>00383
<a name="l00384"></a>00384 <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="l00385"></a>00385 <span class="keyword">new</span> <a class="code" href="classdtn_1_1BundleReceivedEvent.html" title="Event class for new bundle arrivals.">BundleReceivedEvent</a>(bundle, <a class="code" href="namespacedtn.html#60ee39c9672604f59fe1b12d4e1d142bb0775776e4be46e62a0dcff6cf968059" title="a peer dtn forwarder">EVENTSRC_PEER</a>, len, <a class="code" href="classdtn_1_1EndpointID.html#31bd1844cae5e71cc2393a139c9bec4c" title="Return the special endpoint id used for the null endpoint, namely &quot;dtn:none&quot;...">EndpointID::NULL_EID</a>()));
<a name="l00386"></a>00386 }
<a name="l00387"></a>00387
<a name="l00388"></a>00388 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00389"></a>00389 <span class="keywordtype">void</span>
<a name="l00390"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#2072f3d3afe1c1bc9343a70fd3889a4c">00390</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#2072f3d3afe1c1bc9343a70fd3889a4c" title="Loop forever, issuing blocking calls to IPSocket::recvfrom(), then calling the process_data...">UDPConvergenceLayer::Receiver::run</a>()
<a name="l00391"></a>00391 {
<a name="l00392"></a>00392 <span class="keywordtype">int</span> ret;
<a name="l00393"></a>00393 in_addr_t addr;
<a name="l00394"></a>00394 u_int16_t port;
<a name="l00395"></a>00395 u_char <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>[MAX_UDP_PACKET];
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="keywordflow">while</span> (1) {
<a name="l00398"></a>00398 <span class="keywordflow">if</span> (should_stop())
<a name="l00399"></a>00399 <span class="keywordflow">break</span>;
<a name="l00400"></a>00400
<a name="l00401"></a>00401 ret = recvfrom((<span class="keywordtype">char</span>*)buf, MAX_UDP_PACKET, 0, &addr, &port);
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (ret <= 0) {
<a name="l00403"></a>00403 <span class="keywordflow">if</span> (<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EINTR) {
<a name="l00404"></a>00404 <span class="keywordflow">continue</span>;
<a name="l00405"></a>00405 }
<a name="l00406"></a>00406 log_err(<span class="stringliteral">"error in recvfrom(): %d %s"</span>,
<a name="l00407"></a>00407 <a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>, strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00408"></a>00408 close();
<a name="l00409"></a>00409 <span class="keywordflow">break</span>;
<a name="l00410"></a>00410 }
<a name="l00411"></a>00411
<a name="l00412"></a>00412 log_debug(<span class="stringliteral">"got %d byte packet from %s:%d"</span>,
<a name="l00413"></a>00413 ret, intoa(addr), port);
<a name="l00414"></a>00414 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Receiver.html#ddcc5ebc7f6ff41694c3ebb4cadf102e" title="Handler to process an arrived packet.">process_data</a>(buf, ret);
<a name="l00415"></a>00415 }
<a name="l00416"></a>00416 }
<a name="l00417"></a>00417
<a name="l00418"></a>00418 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00419"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#b3d4e978b3bcd7e0acf9d1317ec573a5">00419</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#b3d4e978b3bcd7e0acf9d1317ec573a5" title="Constructor.">UDPConvergenceLayer::Sender::Sender</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#5f869544c85c75b5a85a14d6e90d7ff7" title="Typedef for a reference on a contact.">ContactRef</a>& contact)
<a name="l00420"></a>00420 : <a class="code" href="classoasys_1_1Logger.html">Logger</a>(<span class="stringliteral">"UDPConvergenceLayer::Sender"</span>,
<a name="l00421"></a>00421 <span class="stringliteral">"/dtn/cl/udp/sender/%p"</span>, this),
<a name="l00422"></a>00422 socket_(logpath_),
<a name="l00423"></a>00423 rate_socket_(logpath_, 0, 0),
<a name="l00424"></a>00424 contact_(contact.object(), <span class="stringliteral">"UDPCovergenceLayer::Sender"</span>)
<a name="l00425"></a>00425 {
<a name="l00426"></a>00426 }
<a name="l00427"></a>00427
<a name="l00428"></a>00428 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00429"></a>00429 <span class="keywordtype">bool</span>
<a name="l00430"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c6315762354be592f3706ab4625d6f2a">00430</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c6315762354be592f3706ab4625d6f2a" title="Initialize the sender (the &quot;real&quot; constructor).">UDPConvergenceLayer::Sender::init</a>(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html" title="Tunable parameter structure.">Params</a>* params,
<a name="l00431"></a>00431 in_addr_t addr, u_int16_t port)
<a name="l00432"></a>00432
<a name="l00433"></a>00433 {
<a name="l00434"></a>00434 log_debug(<span class="stringliteral">"initializing sender"</span>);
<a name="l00435"></a>00435
<a name="l00436"></a>00436 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#f9924f6f1b6a5239785e44f1fdbfa88c" title="Pointer to the link parameters.">params_</a> = params;
<a name="l00437"></a>00437
<a name="l00438"></a>00438 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#175508dde272895c68433f22a8608e79" title="The udp client socket.">socket_</a>.logpathf(<span class="stringliteral">"%s/conn/%s:%d"</span>, logpath_, intoa(addr), port);
<a name="l00439"></a>00439 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#175508dde272895c68433f22a8608e79" title="The udp client socket.">socket_</a>.set_logfd(<span class="keyword">false</span>);
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a> != INADDR_NONE || params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a> != 0)
<a name="l00442"></a>00442 {
<a name="l00443"></a>00443 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#175508dde272895c68433f22a8608e79" title="The udp client socket.">socket_</a>.bind(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a>, params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a>) != 0) {
<a name="l00444"></a>00444 log_err(<span class="stringliteral">"error binding to %s:%d: %s"</span>,
<a name="l00445"></a>00445 intoa(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#47234093b522d55ded8095a3f8b8b64b" title="Local address to bind to.">local_addr_</a>), params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#18559ed68c725d85085b95504a533d6d" title="Local port to bind to.">local_port_</a>,
<a name="l00446"></a>00446 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00447"></a>00447 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450
<a name="l00451"></a>00451 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#175508dde272895c68433f22a8608e79" title="The udp client socket.">socket_</a>.connect(addr, port) != 0) {
<a name="l00452"></a>00452 log_err(<span class="stringliteral">"error issuing udp connect to %s:%d: %s"</span>,
<a name="l00453"></a>00453 intoa(addr), port, strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00454"></a>00454 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456
<a name="l00457"></a>00457 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#19a2258ac6c67e72f19838abe6055f41" title="Rate (in bps).">rate_</a> != 0) {
<a name="l00458"></a>00458 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c2187f087794893d671604031170a45d" title="Rate-limited socket that&#39;s optionally enabled.">rate_socket_</a>.bucket()->set_rate(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#19a2258ac6c67e72f19838abe6055f41" title="Rate (in bps).">rate_</a>);
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#4b7cd34b5132e2fc0a7c1da66174648f" title="Token bucket depth (in bits).">bucket_depth_</a> != 0) {
<a name="l00461"></a>00461 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c2187f087794893d671604031170a45d" title="Rate-limited socket that&#39;s optionally enabled.">rate_socket_</a>.bucket()->set_depth(params-><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Params.html#4b7cd34b5132e2fc0a7c1da66174648f" title="Token bucket depth (in bits).">bucket_depth_</a>);
<a name="l00462"></a>00462 }
<a name="l00463"></a>00463
<a name="l00464"></a>00464 log_debug(<span class="stringliteral">"initialized rate controller: rate %llu depth %llu"</span>,
<a name="l00465"></a>00465 U64FMT(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c2187f087794893d671604031170a45d" title="Rate-limited socket that&#39;s optionally enabled.">rate_socket_</a>.bucket()->rate()),
<a name="l00466"></a>00466 U64FMT(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#c2187f087794893d671604031170a45d" title="Rate-limited socket that&#39;s optionally enabled.">rate_socket_</a>.bucket()->depth()));
<a name="l00467"></a>00467 }
<a name="l00468"></a>00468
<a name="l00469"></a>00469 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00470"></a>00470 }
<a name="l00471"></a>00471
<a name="l00472"></a>00472 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00473"></a>00473 <span class="keywordtype">int</span>
<a name="l00474"></a><a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#91a88f720ab7bce40b253bdf99da4041">00474</a> <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#91a88f720ab7bce40b253bdf99da4041" title="Send one bundle.">UDPConvergenceLayer::Sender::send_bundle</a>(<span class="keyword">const</span> <a class="code" href="namespacedtn.html#87094f3b26b9f1d469e616d311ae57b1" title="Class definition for a Bundle reference.">BundleRef</a>& bundle)
<a name="l00475"></a>00475 {
<a name="l00476"></a>00476 <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* blocks = bundle->xmit_blocks()->find_blocks(<a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#ddd3e4252cd3a35f7fe463531f0ea6e2" title="The contact that we&#39;re representing.">contact_</a>->link());
<a name="l00477"></a>00477 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(blocks != NULL);
<a name="l00478"></a>00478
<a name="l00479"></a>00479 <span class="keywordtype">bool</span> complete = <span class="keyword">false</span>;
<a name="l00480"></a>00480 <span class="keywordtype">size_t</span> total_len = <a class="code" href="classdtn_1_1BundleProtocol.html#98a0ecbc789e7f84006909b884e70439" title="Copies out a chunk of formatted bundle data at a specified offset from the provided...">BundleProtocol::produce</a>(bundle.object(), blocks,
<a name="l00481"></a>00481 <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#f5f9512e644cfd522c2ba2a99d629363" title="Temporary buffer for formatting bundles.">buf_</a>, 0, <span class="keyword">sizeof</span>(buf_),
<a name="l00482"></a>00482 &complete);
<a name="l00483"></a>00483 <span class="keywordflow">if</span> (!complete) {
<a name="l00484"></a>00484 <span class="keywordtype">size_t</span> formatted_len = <a class="code" href="classdtn_1_1BundleProtocol.html#a1dedd9ea4300339bc2a3f7a231ca5dd" title="Return the total length of the formatted bundle block data.">BundleProtocol::total_length</a>(blocks);
<a name="l00485"></a>00485 log_err(<span class="stringliteral">"send_bundle: bundle too big (%zu > %u)"</span>,
<a name="l00486"></a>00486 formatted_len, <a class="code" href="classdtn_1_1UDPConvergenceLayer.html#76e985ed36150909b585c14e3c14c242" title="Maximum bundle size.">UDPConvergenceLayer::MAX_BUNDLE_LEN</a>);
<a name="l00487"></a>00487 <span class="keywordflow">return</span> -1;
<a name="l00488"></a>00488 }
<a name="l00489"></a>00489
<a name="l00490"></a>00490 <span class="comment">// write it out the socket and make sure we wrote it all</span>
<a name="l00491"></a>00491 <span class="keywordtype">int</span> cc = <a class="code" href="classdtn_1_1UDPConvergenceLayer_1_1Sender.html#175508dde272895c68433f22a8608e79" title="The udp client socket.">socket_</a>.write((<span class="keywordtype">char</span>*)buf_, total_len);
<a name="l00492"></a>00492 <span class="keywordflow">if</span> (cc == (<span class="keywordtype">int</span>)total_len) {
<a name="l00493"></a>00493 log_info(<span class="stringliteral">"send_bundle: successfully sent bundle length %d"</span>, cc);
<a name="l00494"></a>00494 <span class="keywordflow">return</span> total_len;
<a name="l00495"></a>00495 } <span class="keywordflow">else</span> {
<a name="l00496"></a>00496 log_err(<span class="stringliteral">"send_bundle: error sending bundle (wrote %d/%zu): %s"</span>,
<a name="l00497"></a>00497 cc, total_len, strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00498"></a>00498 <span class="keywordflow">return</span> -1;
<a name="l00499"></a>00499 }
<a name="l00500"></a>00500 }
<a name="l00501"></a>00501
<a name="l00502"></a>00502 } <span class="comment">// namespace dtn</span>
</pre></div></div>
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