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<h1>TCPConvergenceLayer.cc</h1><a href="TCPConvergenceLayer_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 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <oasys/io/NetUtils.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/HexDumpBuffer.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="TCPConvergenceLayer_8h.html">TCPConvergenceLayer.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="IPConvergenceLayerUtils_8h.html">IPConvergenceLayerUtils.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="BundleDaemon_8h.html">bundling/BundleDaemon.h</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="ContactManager_8h.html">contacts/ContactManager.h</a>"</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">namespace </span>dtn {
<a name="l00034"></a>00034
<a name="l00035"></a>00035 TCPConvergenceLayer::TCPLinkParams
<a name="l00036"></a>00036 <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a95268fe0c974d75d832adbf5dd08be6" title="Default link parameters.">TCPConvergenceLayer::default_link_params_</a>(<span class="keyword">true</span>);
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00039"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a795fc380e34ad345fb7486e26344a45">00039</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a795fc380e34ad345fb7486e26344a45">TCPConvergenceLayer::TCPLinkParams::TCPLinkParams</a>(<span class="keywordtype">bool</span> init_defaults)
<a name="l00040"></a>00040 : StreamLinkParams(init_defaults),
<a name="l00041"></a>00041 hexdump_(false),
<a name="l00042"></a>00042 local_addr_(INADDR_ANY),
<a name="l00043"></a>00043 remote_addr_(INADDR_NONE),
<a name="l00044"></a>00044 remote_port_(TCPCL_DEFAULT_PORT)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00049"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#39aeb9e6e1589ec0cf267154576a295a">00049</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#39aeb9e6e1589ec0cf267154576a295a" title="Constructor.">TCPConvergenceLayer::TCPConvergenceLayer</a>()
<a name="l00050"></a>00050 : <a class="code" href="classdtn_1_1StreamConvergenceLayer.html" title="Another shared-implementation convergence layer class for use with reliable, in-order...">StreamConvergenceLayer</a>(<span class="stringliteral">"TCPConvergenceLayer"</span>, <span class="stringliteral">"tcp"</span>, <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#10da73d1ce56da834d5b69543e6d0054" title="Current version of the protocol.">TCPCL_VERSION</a>)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00055"></a>00055 <a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html" title="Tunable parameter structure stored in each Link&#39;s CLInfo slot.">ConnectionConvergenceLayer::LinkParams</a>*
<a name="l00056"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#01e75cb050ede3ab5d552843dd90426b">00056</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#01e75cb050ede3ab5d552843dd90426b" title="Virtual from ConnectionConvergenceLayer.">TCPConvergenceLayer::new_link_params</a>()
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a95268fe0c974d75d832adbf5dd08be6" title="Default link parameters.">default_link_params_</a>);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00062"></a>00062 <span class="keywordtype">bool</span>
<a name="l00063"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a06e06e7211a2f5cce814fc2e66fc233">00063</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a06e06e7211a2f5cce814fc2e66fc233" title="Virtual from ConnectionConvergenceLayer.">TCPConvergenceLayer::parse_link_params</a>(<a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html" title="Tunable parameter structure stored in each Link&#39;s CLInfo slot.">LinkParams</a>* lparams,
<a name="l00064"></a>00064 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>** argv,
<a name="l00065"></a>00065 <span class="keyword">const</span> <span class="keywordtype">char</span>** invalidp)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(lparams);
<a name="l00068"></a>00068 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00069"></a>00069
<a name="l00070"></a>00070 oasys::OptParser p;
<a name="l00071"></a>00071
<a name="l00072"></a>00072 p.addopt(<span class="keyword">new</span> oasys::BoolOpt(<span class="stringliteral">"hexdump"</span>, &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#24b7d1e5111e005cf9e90222deec0ecb" title="Log a hexdump of all traffic.">hexdump_</a>));
<a name="l00073"></a>00073 p.addopt(<span class="keyword">new</span> oasys::InAddrOpt(<span class="stringliteral">"local_addr"</span>, &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a>));
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keywordtype">int</span> <a class="code" href="dtnping_8c.html#d43c3812e6d13e0518d9f8b8f463ffcf">count</a> = p.parse_and_shift(argc, argv, invalidp);
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (count == -1) {
<a name="l00077"></a>00077 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// bogus value</span>
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 argc -= count;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a> == INADDR_NONE) {
<a name="l00082"></a>00082 log_err(<span class="stringliteral">"invalid local address setting of INADDR_NONE"</span>);
<a name="l00083"></a>00083 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="comment">// continue up to parse the parent class</span>
<a name="l00087"></a>00087 <span class="keywordflow">return</span> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a06e06e7211a2f5cce814fc2e66fc233" title="Virtual from ConnectionConvergenceLayer.">StreamConvergenceLayer::parse_link_params</a>(lparams, argc, argv,
<a name="l00088"></a>00088 invalidp);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00092"></a>00092 <span class="keywordtype">void</span>
<a name="l00093"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#fb319b172f583a6457263adffa17a5d9">00093</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#fb319b172f583a6457263adffa17a5d9" title="Virtual from ConvergenceLayer.">TCPConvergenceLayer::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="l00094"></a>00094 {
<a name="l00095"></a>00095 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link != NULL);
<a name="l00096"></a>00096 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(!link->isdeleted());
<a name="l00097"></a>00097 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(link->cl_info() != NULL);
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#fb319b172f583a6457263adffa17a5d9" title="Virtual from ConvergenceLayer.">StreamConvergenceLayer::dump_link</a>(link, buf);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(link->cl_info());
<a name="l00102"></a>00102 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00103"></a>00103
<a name="l00104"></a>00104 buf->appendf(<span class="stringliteral">"local_addr: %s\n"</span>, intoa(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a>));
<a name="l00105"></a>00105 buf->appendf(<span class="stringliteral">"remote_addr: %s\n"</span>, intoa(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a>));
<a name="l00106"></a>00106 buf->appendf(<span class="stringliteral">"remote_port: %d\n"</span>, params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a>);
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00110"></a>00110 <span class="keywordtype">bool</span>
<a name="l00111"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#3ee3568fa12071a07b183c7962c33fbe">00111</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#3ee3568fa12071a07b183c7962c33fbe" title="Virtual from ConvergenceLayer.">TCPConvergenceLayer::set_link_defaults</a>(<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[],
<a name="l00112"></a>00112 <span class="keyword">const</span> <span class="keywordtype">char</span>** invalidp)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keywordflow">return</span> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a06e06e7211a2f5cce814fc2e66fc233" title="Virtual from ConnectionConvergenceLayer.">parse_link_params</a>(&<a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a95268fe0c974d75d832adbf5dd08be6" title="Default link parameters.">default_link_params_</a>, argc, argv, invalidp);
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00118"></a>00118 <span class="keywordtype">bool</span>
<a name="l00119"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#28eae8cabe910cd4210b49715f2d2470">00119</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#28eae8cabe910cd4210b49715f2d2470" title="Virtual from ConnectionConvergenceLayer.">TCPConvergenceLayer::parse_nexthop</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 class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html" title="Tunable parameter structure stored in each Link&#39;s CLInfo slot.">LinkParams</a>* lparams)
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(lparams);
<a name="l00122"></a>00122 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a> == INADDR_NONE || params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a> == 0)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">if</span> (! <a class="code" href="classdtn_1_1IPConvergenceLayerUtils.html#926fabc9e9ca466445a0a0bce98bb251" title="Parse a next hop address specification of the form &lt;host&gt;[:&lt;port&gt;?].">IPConvergenceLayerUtils::parse_nexthop</a>(logpath_, link->nexthop(),
<a name="l00127"></a>00127 &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a>,
<a name="l00128"></a>00128 &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a>)) {
<a name="l00129"></a>00129 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a> == INADDR_ANY ||
<a name="l00134"></a>00134 params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a> == INADDR_NONE)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 log_warn(<span class="stringliteral">"can't lookup hostname in next hop address '%s'"</span>,
<a name="l00137"></a>00137 link->nexthop());
<a name="l00138"></a>00138 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="comment">// if the port wasn't specified, use the default</span>
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a> == 0) {
<a name="l00143"></a>00143 params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a> = <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#cebde3c0927aac1d486255abe224873b" title="Default port used by the tcp cl.">TCPCL_DEFAULT_PORT</a>;
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00150"></a>00150 <a class="code" href="classdtn_1_1CLConnection.html" title="Helper class (and thread) that manages an established connection with a peer daemon...">CLConnection</a>*
<a name="l00151"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#bbaeaaf191c1c132e8940742cf3b9d67">00151</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#bbaeaaf191c1c132e8940742cf3b9d67" title="Virtual from ConnectionConvergenceLayer.">TCPConvergenceLayer::new_connection</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 class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html" title="Tunable parameter structure stored in each Link&#39;s CLInfo slot.">LinkParams</a>* p)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 (void)link;
<a name="l00154"></a>00154 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(p);
<a name="l00155"></a>00155 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00156"></a>00156 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html" title="Stream connection class.">Connection</a>(<span class="keyword">this</span>, params);
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00160"></a>00160 <span class="keywordtype">bool</span>
<a name="l00161"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#4ecd6c64889d5bbf53c8cb2aff68ce8c">00161</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#4ecd6c64889d5bbf53c8cb2aff68ce8c" title="Virtual from ConvergenceLayer.">TCPConvergenceLayer::interface_up</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface,
<a name="l00162"></a>00162 <span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[])
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 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="l00165"></a>00165 in_addr_t local_addr = INADDR_ANY;
<a name="l00166"></a>00166 u_int16_t local_port = <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#cebde3c0927aac1d486255abe224873b" title="Default port used by the tcp cl.">TCPCL_DEFAULT_PORT</a>;
<a name="l00167"></a>00167
<a name="l00168"></a>00168 oasys::OptParser p;
<a name="l00169"></a>00169 p.addopt(<span class="keyword">new</span> oasys::InAddrOpt(<span class="stringliteral">"local_addr"</span>, &local_addr));
<a name="l00170"></a>00170 p.addopt(<span class="keyword">new</span> oasys::UInt16Opt(<span class="stringliteral">"local_port"</span>, &local_port));
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keyword">const</span> <span class="keywordtype">char</span>* invalid = NULL;
<a name="l00173"></a>00173 <span class="keywordflow">if</span> (! p.parse(argc, argv, &invalid)) {
<a name="l00174"></a>00174 log_err(<span class="stringliteral">"error parsing interface options: invalid option '%s'"</span>,
<a name="l00175"></a>00175 invalid);
<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">// check that the local interface / port are valid</span>
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (local_addr == INADDR_NONE) {
<a name="l00181"></a>00181 log_err(<span class="stringliteral">"invalid local address setting of INADDR_NONE"</span>);
<a name="l00182"></a>00182 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="keywordflow">if</span> (local_port == 0) {
<a name="l00186"></a>00186 log_err(<span class="stringliteral">"invalid local port setting of 0"</span>);
<a name="l00187"></a>00187 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="comment">// create a new server socket for the requested interface</span>
<a name="l00191"></a>00191 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>* listener = <span class="keyword">new</span> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>(<span class="keyword">this</span>);
<a name="l00192"></a>00192 listener->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="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordtype">int</span> ret = listener->bind(local_addr, local_port);
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">// be a little forgiving -- if the address is in use, wait for a</span>
<a name="l00197"></a>00197 <span class="comment">// bit and try again</span>
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (ret != 0 && <a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EADDRINUSE) {
<a name="l00199"></a>00199 listener->logf(oasys::LOG_WARN,
<a name="l00200"></a>00200 <span class="stringliteral">"WARNING: error binding to requested socket: %s"</span>,
<a name="l00201"></a>00201 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00202"></a>00202 listener->logf(oasys::LOG_WARN,
<a name="l00203"></a>00203 <span class="stringliteral">"waiting for 10 seconds then trying again"</span>);
<a name="l00204"></a>00204 sleep(10);
<a name="l00205"></a>00205
<a name="l00206"></a>00206 ret = listener->bind(local_addr, local_port);
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (ret != 0) {
<a name="l00210"></a>00210 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// error already logged</span>
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">// start listening and then start the thread to loop calling accept()</span>
<a name="l00214"></a>00214 listener->listen();
<a name="l00215"></a>00215 listener->start();
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="comment">// store the new listener object in the cl specific portion of the</span>
<a name="l00218"></a>00218 <span class="comment">// interface</span>
<a name="l00219"></a>00219 iface-><a class="code" href="classdtn_1_1Interface.html#04979810a90c508de3557961cfd9f022" title="Store the ConvergenceLayer specific state.">set_cl_info</a>(listener);
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00222"></a>00222 }
<a name="l00223"></a>00223
<a name="l00224"></a>00224 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00225"></a>00225 <span class="keywordtype">bool</span>
<a name="l00226"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#b3d6443a899039be44a222e7302c5980">00226</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#b3d6443a899039be44a222e7302c5980" title="Virtual from ConvergenceLayer.">TCPConvergenceLayer::interface_down</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>* listener = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>*<span class="keyword">></span>(iface-><a class="code" href="classdtn_1_1Interface.html#cd9858714c6404a4e8b37e15cf3241a2">cl_info</a>());
<a name="l00229"></a>00229 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(listener != NULL);
<a name="l00230"></a>00230 listener->stop();
<a name="l00231"></a>00231 <span class="keyword">delete</span> listener;
<a name="l00232"></a>00232 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00236"></a>00236 <span class="keywordtype">void</span>
<a name="l00237"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer.html#5896a1b682d6253b9ba93c529bc1160a">00237</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer.html#5896a1b682d6253b9ba93c529bc1160a" title="Virtual from ConvergenceLayer.">TCPConvergenceLayer::dump_interface</a>(<a class="code" href="classdtn_1_1Interface.html" title="Abstraction of a local dtn interface.">Interface</a>* iface,
<a name="l00238"></a>00238 oasys::StringBuffer* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>)
<a name="l00239"></a>00239 {
<a name="l00240"></a>00240 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>* listener = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html" title="Helper class (and thread) that listens on a registered interface for new connections...">Listener</a>*<span class="keyword">></span>(iface-><a class="code" href="classdtn_1_1Interface.html#cd9858714c6404a4e8b37e15cf3241a2">cl_info</a>());
<a name="l00241"></a>00241 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(listener != NULL);
<a name="l00242"></a>00242
<a name="l00243"></a>00243 buf->appendf(<span class="stringliteral">"\tlocal_addr: %s local_port: %d\n"</span>,
<a name="l00244"></a>00244 intoa(listener->local_addr()), listener->local_port());
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00248"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html#519536b88fbfa762b75196b27514d547">00248</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html#519536b88fbfa762b75196b27514d547">TCPConvergenceLayer::Listener::Listener</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer.html" title="The TCP Convergence Layer.">TCPConvergenceLayer</a>* cl)
<a name="l00249"></a>00249 : TCPServerThread(<span class="stringliteral">"TCPConvergenceLayer::Listener"</span>,
<a name="l00250"></a>00250 <span class="stringliteral">"/dtn/cl/tcp/listener"</span>),
<a name="l00251"></a>00251 cl_(cl)
<a name="l00252"></a>00252 {
<a name="l00253"></a>00253 logfd_ = <span class="keyword">false</span>;
<a name="l00254"></a>00254 }
<a name="l00255"></a>00255
<a name="l00256"></a>00256 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00257"></a>00257 <span class="keywordtype">void</span>
<a name="l00258"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html#2cbd5b8f857b808132619955fc7914e2">00258</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html#2cbd5b8f857b808132619955fc7914e2">TCPConvergenceLayer::Listener::accepted</a>(<span class="keywordtype">int</span> <a class="code" href="dtnperf-client_8c.html#6f8059414f0228f0256115e024eeed4b">fd</a>, in_addr_t addr, u_int16_t port)
<a name="l00259"></a>00259 {
<a name="l00260"></a>00260 log_debug(<span class="stringliteral">"new connection from %s:%d"</span>, intoa(addr), port);
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html" title="Stream connection class.">Connection</a>* conn =
<a name="l00263"></a>00263 <span class="keyword">new</span> <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html" title="Stream connection class.">Connection</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Listener.html#590af81b3b2c9b0070feda642ecbd663" title="The TCPCL instance.">cl_</a>, &<a class="code" href="classdtn_1_1TCPConvergenceLayer.html#a95268fe0c974d75d832adbf5dd08be6" title="Default link parameters.">TCPConvergenceLayer::default_link_params_</a>,
<a name="l00264"></a>00264 fd, addr, port);
<a name="l00265"></a>00265 conn->start();
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00269"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#eeec51a4930b3a3db1e64a1c1367add3">00269</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#eeec51a4930b3a3db1e64a1c1367add3" title="Constructor for the active connect side of a connection.">TCPConvergenceLayer::Connection::Connection</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer.html" title="The TCP Convergence Layer.">TCPConvergenceLayer</a>* cl,
<a name="l00270"></a>00270 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params)
<a name="l00271"></a>00271 : <a class="code" href="classdtn_1_1StreamConvergenceLayer.html" title="Another shared-implementation convergence layer class for use with reliable, in-order...">StreamConvergenceLayer</a>::<a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html" title="Stream connection class.">Connection</a>(<span class="stringliteral">"TCPConvergenceLayer::Connection"</span>,
<a name="l00272"></a>00272 cl->logpath(), cl, params,
<a name="l00273"></a>00273 true <span class="comment">/* call connect() */</span>)
<a name="l00274"></a>00274 {
<a name="l00275"></a>00275 logpathf(<span class="stringliteral">"%s/conn/%p"</span>, cl->logpath(), <span class="keyword">this</span>);
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <span class="comment">// set up the base class' nexthop parameter</span>
<a name="l00278"></a>00278 oasys::StringBuffer nexthop(<span class="stringliteral">"%s:%d"</span>,
<a name="l00279"></a>00279 intoa(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a>),
<a name="l00280"></a>00280 params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a>);
<a name="l00281"></a>00281 <a class="code" href="classdtn_1_1CLConnection.html#463fcafdc6fd41f67a39c78decb0ee92" title="Assignment function for the nexthop identifier.">set_nexthop</a>(nexthop.c_str());
<a name="l00282"></a>00282
<a name="l00283"></a>00283 <span class="comment">// the actual socket</span>
<a name="l00284"></a>00284 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a> = <span class="keyword">new</span> oasys::TCPClient(logpath_);
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="comment">// XXX/demmer the basic socket logging emits errors and the like</span>
<a name="l00287"></a>00287 <span class="comment">// when connections break. that may not be great since we kinda</span>
<a name="l00288"></a>00288 <span class="comment">// expect them to happen... so either we should add some flag as</span>
<a name="l00289"></a>00289 <span class="comment">// to the severity of error messages that can be passed into the</span>
<a name="l00290"></a>00290 <span class="comment">// IO routines, or just suppress the IO output altogether</span>
<a name="l00291"></a>00291 sock_->logpathf(<span class="stringliteral">"%s/sock"</span>, logpath_);
<a name="l00292"></a>00292 sock_->set_logfd(<span class="keyword">false</span>);
<a name="l00293"></a>00293
<a name="l00294"></a>00294 sock_->init_socket();
<a name="l00295"></a>00295 sock_->set_nonblocking(<span class="keyword">true</span>);
<a name="l00296"></a>00296
<a name="l00297"></a>00297 <span class="comment">// if the parameters specify a local address, do the bind here --</span>
<a name="l00298"></a>00298 <span class="comment">// however if it fails, we can't really do anything about it, so</span>
<a name="l00299"></a>00299 <span class="comment">// just log and go on</span>
<a name="l00300"></a>00300 <span class="keywordflow">if</span> (params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a> != INADDR_ANY)
<a name="l00301"></a>00301 {
<a name="l00302"></a>00302 <span class="keywordflow">if</span> (sock_->bind(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a>, 0) != 0) {
<a name="l00303"></a>00303 log_err(<span class="stringliteral">"error binding to %s: %s"</span>,
<a name="l00304"></a>00304 intoa(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a>),
<a name="l00305"></a>00305 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 }
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00311"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#732977b69528e31d2227abd7fe1ba2b3">00311</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#eeec51a4930b3a3db1e64a1c1367add3" title="Constructor for the active connect side of a connection.">TCPConvergenceLayer::Connection::Connection</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer.html" title="The TCP Convergence Layer.">TCPConvergenceLayer</a>* cl,
<a name="l00312"></a>00312 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params,
<a name="l00313"></a>00313 <span class="keywordtype">int</span> <a class="code" href="dtnperf-client_8c.html#6f8059414f0228f0256115e024eeed4b">fd</a>,
<a name="l00314"></a>00314 in_addr_t remote_addr,
<a name="l00315"></a>00315 u_int16_t remote_port)
<a name="l00316"></a>00316 : <a class="code" href="classdtn_1_1StreamConvergenceLayer.html" title="Another shared-implementation convergence layer class for use with reliable, in-order...">StreamConvergenceLayer</a>::<a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html" title="Stream connection class.">Connection</a>(<span class="stringliteral">"TCPConvergenceLayer::Connection"</span>,
<a name="l00317"></a>00317 cl->logpath(), cl, params,
<a name="l00318"></a>00318 false <span class="comment">/* call accept() */</span>)
<a name="l00319"></a>00319 {
<a name="l00320"></a>00320 logpathf(<span class="stringliteral">"%s/conn/%p"</span>, cl->logpath(), <span class="keyword">this</span>);
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="comment">// set up the base class' nexthop parameter</span>
<a name="l00323"></a>00323 oasys::StringBuffer nexthop(<span class="stringliteral">"%s:%d"</span>, intoa(remote_addr), remote_port);
<a name="l00324"></a>00324 <a class="code" href="classdtn_1_1CLConnection.html#463fcafdc6fd41f67a39c78decb0ee92" title="Assignment function for the nexthop identifier.">set_nexthop</a>(nexthop.c_str());
<a name="l00325"></a>00325
<a name="l00326"></a>00326 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a> = <span class="keyword">new</span> oasys::TCPClient(fd, remote_addr, remote_port, logpath_);
<a name="l00327"></a>00327 sock_->set_logfd(<span class="keyword">false</span>);
<a name="l00328"></a>00328 sock_->set_nonblocking(<span class="keyword">true</span>);
<a name="l00329"></a>00329 }
<a name="l00330"></a>00330
<a name="l00331"></a>00331 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00332"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#e6f0a97c77ea81a63b2ff5cd12613846">00332</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#e6f0a97c77ea81a63b2ff5cd12613846" title="Destructor.">TCPConvergenceLayer::Connection::~Connection</a>()
<a name="l00333"></a>00333 {
<a name="l00334"></a>00334 <span class="keyword">delete</span> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>;
<a name="l00335"></a>00335 }
<a name="l00336"></a>00336
<a name="l00337"></a>00337 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00338"></a>00338 <span class="keywordtype">void</span>
<a name="l00339"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#bc9f7ca2a00e9a8e8464f288dd94218d">00339</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#bc9f7ca2a00e9a8e8464f288dd94218d" title="Virtual from SerializableObject.">TCPConvergenceLayer::Connection::serialize</a>(oasys::SerializeAction *a)
<a name="l00340"></a>00340 {
<a name="l00341"></a>00341 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a> *params = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#9d64c7b8b7595e2cf0cdc16fcc2c6c9a" title="Utility function to downcast the params_ pointer that&#39;s stored in the CLConnection...">tcp_lparams</a>();
<a name="l00342"></a>00342 <span class="keywordflow">if</span> (! params) <span class="keywordflow">return</span>;
<a name="l00343"></a>00343
<a name="l00344"></a>00344 a->process(<span class="stringliteral">"hexdump"</span>, &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#24b7d1e5111e005cf9e90222deec0ecb" title="Log a hexdump of all traffic.">hexdump_</a>);
<a name="l00345"></a>00345 a->process(<span class="stringliteral">"local_addr"</span>, oasys::InAddrPtr(&params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#325c90fcbf0a31635aa9dcff73099621" title="Local address to bind to.">local_addr_</a>));
<a name="l00346"></a>00346 a->process(<span class="stringliteral">"remote_addr"</span>, oasys::InAddrPtr(&params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a>));
<a name="l00347"></a>00347 a->process(<span class="stringliteral">"remote_port"</span>, &params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a>);
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <span class="comment">// from StreamLinkParams</span>
<a name="l00350"></a>00350 a->process(<span class="stringliteral">"segment_ack_enabled"</span>, &params->segment_ack_enabled_);
<a name="l00351"></a>00351 a->process(<span class="stringliteral">"negative_ack_enabled"</span>, &params->negative_ack_enabled_);
<a name="l00352"></a>00352 a->process(<span class="stringliteral">"keepalive_interval"</span>, &params->keepalive_interval_);
<a name="l00353"></a>00353 a->process(<span class="stringliteral">"segment_length"</span>, &params->segment_length_);
<a name="l00354"></a>00354
<a name="l00355"></a>00355 <span class="comment">// from LinkParams</span>
<a name="l00356"></a>00356 a->process(<span class="stringliteral">"reactive_frag_enabled"</span>, &params->reactive_frag_enabled_);
<a name="l00357"></a>00357 a->process(<span class="stringliteral">"sendbuf_length"</span>, &params->sendbuf_len_);
<a name="l00358"></a>00358 a->process(<span class="stringliteral">"recvbuf_length"</span>, &params->recvbuf_len_);
<a name="l00359"></a>00359 a->process(<span class="stringliteral">"data_timeout"</span>, &params->data_timeout_);
<a name="l00360"></a>00360 }
<a name="l00361"></a>00361
<a name="l00362"></a>00362 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00363"></a>00363 <span class="keywordtype">void</span>
<a name="l00364"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#b707884ca13aefa99e14180666e83beb">00364</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#b707884ca13aefa99e14180666e83beb" title="Virtual from CLConnection.">TCPConvergenceLayer::Connection::initialize_pollfds</a>()
<a name="l00365"></a>00365 {
<a name="l00366"></a>00366 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a> = &<a class="code" href="classdtn_1_1CLConnection.html#9b530df82d1a6b8ca6717fd225c30b5b" title="Array of pollfds.">pollfds_</a>[0];
<a name="l00367"></a>00367 <a class="code" href="classdtn_1_1CLConnection.html#9acc4a1e846c1a93ca38be02296b9ee0" title="Number of pollfds in use.">num_pollfds_</a> = 1;
<a name="l00368"></a>00368
<a name="l00369"></a>00369 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->fd = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->fd();
<a name="l00370"></a>00370 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events = POLLIN;
<a name="l00371"></a>00371
<a name="l00372"></a>00372 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>);
<a name="l00373"></a>00373 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <a class="code" href="classdtn_1_1CLConnection.html#b9b601dae1312020426d0d57daca19da" title="Timeout to wait for poll data.">poll_timeout_</a> = params->data_timeout_;
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="keywordflow">if</span> (params->keepalive_interval_ != 0 &&
<a name="l00378"></a>00378 (params->keepalive_interval_ * 1000) < params->data_timeout_)
<a name="l00379"></a>00379 {
<a name="l00380"></a>00380 <a class="code" href="classdtn_1_1CLConnection.html#b9b601dae1312020426d0d57daca19da" title="Timeout to wait for poll data.">poll_timeout_</a> = params->keepalive_interval_ * 1000;
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382 }
<a name="l00383"></a>00383
<a name="l00384"></a>00384 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00385"></a>00385 <span class="keywordtype">void</span>
<a name="l00386"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#1da1b3ab6486da323957e922306a3f5c">00386</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#1da1b3ab6486da323957e922306a3f5c" title="Virtual from CLConnection.">TCPConvergenceLayer::Connection::connect</a>()
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388 <span class="comment">// the first thing we do is try to parse the next hop address...</span>
<a name="l00389"></a>00389 <span class="comment">// if we're unable to do so, the link can't be opened.</span>
<a name="l00390"></a>00390 <span class="keywordflow">if</span> (! <a class="code" href="classdtn_1_1CLConnection.html#99b84b09e39381998c5a918579853a30" title="Pointer to the CL.">cl_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer.html#9f96d07f1c0cb39625c18d08fda84bfc" title="Parse and validate the nexthop address for the given link.">parse_nexthop</a>(<a class="code" href="classdtn_1_1CLConnection.html#29c0707d21c5347919186a8e14728ed0" title="Ref to the Contact.">contact_</a>->link(), <a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>)) {
<a name="l00391"></a>00391 log_info(<span class="stringliteral">"can't resolve nexthop address '%s'"</span>,
<a name="l00392"></a>00392 <a class="code" href="classdtn_1_1CLConnection.html#29c0707d21c5347919186a8e14728ed0" title="Ref to the Contact.">contact_</a>->link()->nexthop());
<a name="l00393"></a>00393 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00394"></a>00394 <span class="keywordflow">return</span>;
<a name="l00395"></a>00395 }
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="comment">// cache the remote addr and port in the fields in the socket</span>
<a name="l00398"></a>00398 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>* params = <span class="keyword">dynamic_cast<</span><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html" title="Tunable link parameter structure.">TCPLinkParams</a>*<span class="keyword">></span>(<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>);
<a name="l00399"></a>00399 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(params != NULL);
<a name="l00400"></a>00400 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->set_remote_addr(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#c05bc2b98b10bf8f4187f21a9a6ee929" title="Peer address used for rcvr-connect.">remote_addr_</a>);
<a name="l00401"></a>00401 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->set_remote_port(params-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#a98a55a1241b1f0d5a65c033e07b9aab" title="Peer port used for rcvr-connect.">remote_port_</a>);
<a name="l00402"></a>00402
<a name="l00403"></a>00403 <span class="comment">// start a connection to the other side... in most cases, this</span>
<a name="l00404"></a>00404 <span class="comment">// returns EINPROGRESS, in which case we wait for a call to</span>
<a name="l00405"></a>00405 <span class="comment">// handle_poll_activity</span>
<a name="l00406"></a>00406 log_debug(<span class="stringliteral">"connect: connecting to %s:%d..."</span>,
<a name="l00407"></a>00407 intoa(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr()), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port());
<a name="l00408"></a>00408 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(<a class="code" href="classdtn_1_1CLConnection.html#29c0707d21c5347919186a8e14728ed0" title="Ref to the Contact.">contact_</a> == NULL || <a class="code" href="classdtn_1_1CLConnection.html#29c0707d21c5347919186a8e14728ed0" title="Ref to the Contact.">contact_</a>->link()->isopening());
<a name="l00409"></a>00409 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->state() != oasys::IPSocket::ESTABLISHED);
<a name="l00410"></a>00410 <span class="keywordtype">int</span> ret = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->connect(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr(), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port());
<a name="l00411"></a>00411
<a name="l00412"></a>00412 <span class="keywordflow">if</span> (ret == 0) {
<a name="l00413"></a>00413 log_debug(<span class="stringliteral">"connect: succeeded immediately"</span>);
<a name="l00414"></a>00414 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->state() == oasys::IPSocket::ESTABLISHED);
<a name="l00415"></a>00415
<a name="l00416"></a>00416 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#db6e45fa1f3fdf6e3e753df0cfb792c8" title="utility functions used by derived classes">initiate_contact</a>();
<a name="l00417"></a>00417
<a name="l00418"></a>00418 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ret == -1 && <a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EINPROGRESS) {
<a name="l00419"></a>00419 log_debug(<span class="stringliteral">"connect: EINPROGRESS returned, waiting for write ready"</span>);
<a name="l00420"></a>00420 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events |= POLLOUT;
<a name="l00421"></a>00421
<a name="l00422"></a>00422 } <span class="keywordflow">else</span> {
<a name="l00423"></a>00423 log_info(<span class="stringliteral">"connection attempt to %s:%d failed... %s"</span>,
<a name="l00424"></a>00424 intoa(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr()), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port(),
<a name="l00425"></a>00425 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00426"></a>00426 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428 }
<a name="l00429"></a>00429
<a name="l00430"></a>00430 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00431"></a>00431 <span class="keywordtype">void</span>
<a name="l00432"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#3052476d298886a961e0f26958fd8521">00432</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#3052476d298886a961e0f26958fd8521" title="Virtual from CLConnection.">TCPConvergenceLayer::Connection::accept</a>()
<a name="l00433"></a>00433 {
<a name="l00434"></a>00434 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->state() == oasys::IPSocket::ESTABLISHED);
<a name="l00435"></a>00435
<a name="l00436"></a>00436 log_debug(<span class="stringliteral">"accept: got connection from %s:%d..."</span>,
<a name="l00437"></a>00437 intoa(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr()), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port());
<a name="l00438"></a>00438 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#db6e45fa1f3fdf6e3e753df0cfb792c8" title="utility functions used by derived classes">initiate_contact</a>();
<a name="l00439"></a>00439 }
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00442"></a>00442 <span class="keywordtype">void</span>
<a name="l00443"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#ed568f30225062e0dbd06208e5f76761">00443</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#ed568f30225062e0dbd06208e5f76761" title="Virtual from CLConnection.">TCPConvergenceLayer::Connection::disconnect</a>()
<a name="l00444"></a>00444 {
<a name="l00445"></a>00445 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->state() != oasys::IPSocket::CLOSED) {
<a name="l00446"></a>00446 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->close();
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449
<a name="l00450"></a>00450 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00451"></a>00451 <span class="keywordtype">void</span>
<a name="l00452"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#61654da660819e3992e4724fb04fcabf">00452</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#61654da660819e3992e4724fb04fcabf" title="Virtual from CLConnection.">TCPConvergenceLayer::Connection::handle_poll_activity</a>()
<a name="l00453"></a>00453 {
<a name="l00454"></a>00454 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->revents & POLLHUP) {
<a name="l00455"></a>00455 log_info(<span class="stringliteral">"remote socket closed connection -- returned POLLHUP"</span>);
<a name="l00456"></a>00456 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00457"></a>00457 <span class="keywordflow">return</span>;
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->revents & POLLERR) {
<a name="l00461"></a>00461 log_info(<span class="stringliteral">"error condition on remote socket -- returned POLLERR"</span>);
<a name="l00462"></a>00462 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00463"></a>00463 <span class="keywordflow">return</span>;
<a name="l00464"></a>00464 }
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="comment">// first check for write readiness, meaning either we're getting a</span>
<a name="l00467"></a>00467 <span class="comment">// notification that the deferred connect() call completed, or</span>
<a name="l00468"></a>00468 <span class="comment">// that we are no longer write blocked</span>
<a name="l00469"></a>00469 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->revents & POLLOUT)
<a name="l00470"></a>00470 {
<a name="l00471"></a>00471 log_debug(<span class="stringliteral">"poll returned write ready, clearing POLLOUT bit"</span>);
<a name="l00472"></a>00472 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events &= ~POLLOUT;
<a name="l00473"></a>00473
<a name="l00474"></a>00474 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->state() == oasys::IPSocket::CONNECTING) {
<a name="l00475"></a>00475 <span class="keywordtype">int</span> result = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->async_connect_result();
<a name="l00476"></a>00476 <span class="keywordflow">if</span> (result == 0 && <a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.fullbytes() == 0) {
<a name="l00477"></a>00477 log_debug(<span class="stringliteral">"delayed_connect to %s:%d succeeded"</span>,
<a name="l00478"></a>00478 intoa(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr()), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port());
<a name="l00479"></a>00479 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#db6e45fa1f3fdf6e3e753df0cfb792c8" title="utility functions used by derived classes">initiate_contact</a>();
<a name="l00480"></a>00480
<a name="l00481"></a>00481 } <span class="keywordflow">else</span> {
<a name="l00482"></a>00482 log_info(<span class="stringliteral">"connection attempt to %s:%d failed... %s"</span>,
<a name="l00483"></a>00483 intoa(<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_addr()), <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->remote_port(),
<a name="l00484"></a>00484 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00485"></a>00485 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00486"></a>00486 }
<a name="l00487"></a>00487
<a name="l00488"></a>00488 <span class="keywordflow">return</span>;
<a name="l00489"></a>00489 }
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#c46ee583f6f691b649b7f26597311382" title="virtual from StreamConvergenceLayer::Connection">send_data</a>();
<a name="l00492"></a>00492 }
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="comment">//check that the connection was not broken during the data send</span>
<a name="l00495"></a>00495 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#a61b296b02812f04b3df0c8fb09919b8" title="Contact has been broken.">contact_broken_</a>)
<a name="l00496"></a>00496 {
<a name="l00497"></a>00497 <span class="keywordflow">return</span>;
<a name="l00498"></a>00498 }
<a name="l00499"></a>00499
<a name="l00500"></a>00500 <span class="comment">// finally, check for incoming data</span>
<a name="l00501"></a>00501 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->revents & POLLIN) {
<a name="l00502"></a>00502 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#ded2fb56de1e70a4dfe030e84e7b16d1" title="Hook for handle_poll_activity to receive data.">recv_data</a>();
<a name="l00503"></a>00503 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#5e611627d2caa87dbce0e3affc5b5c68" title="utility functions used by derived classes">process_data</a>();
<a name="l00504"></a>00504
<a name="l00505"></a>00505 <span class="comment">// Sanity check to make sure that there's space in the buffer</span>
<a name="l00506"></a>00506 <span class="comment">// for a subsequent read_data() call</span>
<a name="l00507"></a>00507 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.tailbytes() == 0) {
<a name="l00508"></a>00508 log_err(<span class="stringliteral">"process_data left no space in recvbuf!!"</span>);
<a name="l00509"></a>00509 }
<a name="l00510"></a>00510
<a name="l00511"></a>00511 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#5712e80e8d3608ae67709fd8adf53bbe" title="Has contact_up been called.">contact_up_</a> && ! <a class="code" href="classdtn_1_1CLConnection.html#a61b296b02812f04b3df0c8fb09919b8" title="Contact has been broken.">contact_broken_</a>) {
<a name="l00512"></a>00512 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#a7f82a1ad41a82f47cebf230ac0b5036" title="utility functions used by derived classes">check_keepalive</a>();
<a name="l00513"></a>00513 }
<a name="l00514"></a>00514
<a name="l00515"></a>00515 }
<a name="l00516"></a>00516
<a name="l00517"></a>00517 }
<a name="l00518"></a>00518
<a name="l00519"></a>00519 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00520"></a>00520 <span class="keywordtype">void</span>
<a name="l00521"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#c46ee583f6f691b649b7f26597311382">00521</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#c46ee583f6f691b649b7f26597311382" title="virtual from StreamConvergenceLayer::Connection">TCPConvergenceLayer::Connection::send_data</a>()
<a name="l00522"></a>00522 {
<a name="l00523"></a>00523 <span class="comment">// XXX/demmer this assertion is mostly for debugging to catch call</span>
<a name="l00524"></a>00524 <span class="comment">// chains where the contact is broken but we're still using the</span>
<a name="l00525"></a>00525 <span class="comment">// socket</span>
<a name="l00526"></a>00526 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(! <a class="code" href="classdtn_1_1CLConnection.html#a61b296b02812f04b3df0c8fb09919b8" title="Contact has been broken.">contact_broken_</a>);
<a name="l00527"></a>00527
<a name="l00528"></a>00528 u_int towrite = <a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.fullbytes();
<a name="l00529"></a>00529 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#08a9fb0dfcc27d98a3c327ec74bb41e0" title="Max amount to write to the channel.">test_write_limit_</a> != 0) {
<a name="l00530"></a>00530 towrite = std::min(towrite, <a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#08a9fb0dfcc27d98a3c327ec74bb41e0" title="Max amount to write to the channel.">test_write_limit_</a>);
<a name="l00531"></a>00531 }
<a name="l00532"></a>00532
<a name="l00533"></a>00533 log_debug(<span class="stringliteral">"send_data: trying to drain %u bytes from send buffer..."</span>,
<a name="l00534"></a>00534 towrite);
<a name="l00535"></a>00535 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(towrite > 0);
<a name="l00536"></a>00536
<a name="l00537"></a>00537 <span class="keywordtype">int</span> cc = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->write(<a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.start(), towrite);
<a name="l00538"></a>00538 <span class="keywordflow">if</span> (cc > 0) {
<a name="l00539"></a>00539 log_debug(<span class="stringliteral">"send_data: wrote %d/%zu bytes from send buffer"</span>,
<a name="l00540"></a>00540 cc, <a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.fullbytes());
<a name="l00541"></a>00541 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#9d64c7b8b7595e2cf0cdc16fcc2c6c9a" title="Utility function to downcast the params_ pointer that&#39;s stored in the CLConnection...">tcp_lparams</a>()-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#24b7d1e5111e005cf9e90222deec0ecb" title="Log a hexdump of all traffic.">hexdump_</a>) {
<a name="l00542"></a>00542 oasys::HexDumpBuffer <a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">hex</a>;
<a name="l00543"></a>00543 hex.append((u_char*)<a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.start(), cc);
<a name="l00544"></a>00544 log_multiline(oasys::LOG_ALWAYS, hex.hexify().c_str());
<a name="l00545"></a>00545 }
<a name="l00546"></a>00546
<a name="l00547"></a>00547 <a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.consume(cc);
<a name="l00548"></a>00548
<a name="l00549"></a>00549 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#95f89064268605c6183fa4c436a12071" title="Buffer for outgoing data.">sendbuf_</a>.fullbytes() != 0) {
<a name="l00550"></a>00550 log_debug(<span class="stringliteral">"send_data: incomplete write, setting POLLOUT bit"</span>);
<a name="l00551"></a>00551 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events |= POLLOUT;
<a name="l00552"></a>00552
<a name="l00553"></a>00553 } <span class="keywordflow">else</span> {
<a name="l00554"></a>00554 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events & POLLOUT) {
<a name="l00555"></a>00555 log_debug(<span class="stringliteral">"send_data: drained buffer, clearing POLLOUT bit"</span>);
<a name="l00556"></a>00556 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events &= ~POLLOUT;
<a name="l00557"></a>00557 }
<a name="l00558"></a>00558 }
<a name="l00559"></a>00559 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a> == EWOULDBLOCK) {
<a name="l00560"></a>00560 log_debug(<span class="stringliteral">"send_data: write returned EWOULDBLOCK, setting POLLOUT bit"</span>);
<a name="l00561"></a>00561 <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#7f1906e3fc8b395c501cbafbd7c195c7" title="Poll structure for the socket.">sock_pollfd_</a>->events |= POLLOUT;
<a name="l00562"></a>00562
<a name="l00563"></a>00563 } <span class="keywordflow">else</span> {
<a name="l00564"></a>00564 log_info(<span class="stringliteral">"send_data: remote connection unexpectedly closed: %s"</span>,
<a name="l00565"></a>00565 strerror(<a class="code" href="IPDiscovery_8cc.html#d65a8842cc674e3ddf69355898c0ecbf">errno</a>));
<a name="l00566"></a>00566 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00567"></a>00567 }
<a name="l00568"></a>00568 }
<a name="l00569"></a>00569
<a name="l00570"></a>00570 <span class="comment">//----------------------------------------------------------------------</span>
<a name="l00571"></a>00571 <span class="keywordtype">void</span>
<a name="l00572"></a><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#ded2fb56de1e70a4dfe030e84e7b16d1">00572</a> <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#ded2fb56de1e70a4dfe030e84e7b16d1" title="Hook for handle_poll_activity to receive data.">TCPConvergenceLayer::Connection::recv_data</a>()
<a name="l00573"></a>00573 {
<a name="l00574"></a>00574 <span class="comment">// XXX/demmer this assertion is mostly for debugging to catch call</span>
<a name="l00575"></a>00575 <span class="comment">// chains where the contact is broken but we're still using the</span>
<a name="l00576"></a>00576 <span class="comment">// socket</span>
<a name="l00577"></a>00577 <a class="code" href="SDNV_8cc.html#ca68c0d4ac8df0838e209fb5300f7be3">ASSERT</a>(! <a class="code" href="classdtn_1_1CLConnection.html#a61b296b02812f04b3df0c8fb09919b8" title="Contact has been broken.">contact_broken_</a>);
<a name="l00578"></a>00578
<a name="l00579"></a>00579 <span class="comment">// this shouldn't ever happen</span>
<a name="l00580"></a>00580 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.tailbytes() == 0) {
<a name="l00581"></a>00581 log_err(<span class="stringliteral">"no space in receive buffer to accept data!!!"</span>);
<a name="l00582"></a>00582 <span class="keywordflow">return</span>;
<a name="l00583"></a>00583 }
<a name="l00584"></a>00584
<a name="l00585"></a>00585 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#9e10301e4342cf1319096e973d1e5ff3" title="Msecs to sleep between read calls.">test_read_delay_</a> != 0) {
<a name="l00586"></a>00586 log_debug(<span class="stringliteral">"recv_data: sleeping for test_read_delay msecs %u"</span>,
<a name="l00587"></a>00587 <a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#9e10301e4342cf1319096e973d1e5ff3" title="Msecs to sleep between read calls.">test_read_delay_</a>);
<a name="l00588"></a>00588
<a name="l00589"></a>00589 usleep(<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#9e10301e4342cf1319096e973d1e5ff3" title="Msecs to sleep between read calls.">test_read_delay_</a> * 1000);
<a name="l00590"></a>00590 }
<a name="l00591"></a>00591
<a name="l00592"></a>00592 u_int toread = <a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.tailbytes();
<a name="l00593"></a>00593 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#8cf6f011103e2250e2ab6d8c5e40a06e" title="Max amount to read from the channel.">test_read_limit_</a> != 0) {
<a name="l00594"></a>00594 toread = std::min(toread, <a class="code" href="classdtn_1_1CLConnection.html#e3408a135a49d68ab36fd8de5805b1fe" title="Pointer to Link parameters, or to defaults until Link is bound.">params_</a>-><a class="code" href="classdtn_1_1ConnectionConvergenceLayer_1_1LinkParams.html#8cf6f011103e2250e2ab6d8c5e40a06e" title="Max amount to read from the channel.">test_read_limit_</a>);
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596
<a name="l00597"></a>00597 log_debug(<span class="stringliteral">"recv_data: draining up to %u bytes into recv buffer..."</span>, toread);
<a name="l00598"></a>00598 <span class="keywordtype">int</span> cc = <a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#927cb5490d9c61f3ef52ef234854170a" title="The socket.">sock_</a>->read(<a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.end(), toread);
<a name="l00599"></a>00599 <span class="keywordflow">if</span> (cc < 1) {
<a name="l00600"></a>00600 log_info(<span class="stringliteral">"remote connection unexpectedly closed"</span>);
<a name="l00601"></a>00601 <a class="code" href="classdtn_1_1StreamConvergenceLayer_1_1Connection.html#b06d1276d10f66d40f04da6bd824e54b" title="virtual from CLConnection">break_contact</a>(<a class="code" href="classdtn_1_1ContactEvent.html#e20f7357509a2bcca3d8e6c8daf552f7f0c1475c056a0f72e11b5ba8466a27f7" title="Unexpected session interruption.">ContactEvent::BROKEN</a>);
<a name="l00602"></a>00602 <span class="keywordflow">return</span>;
<a name="l00603"></a>00603 }
<a name="l00604"></a>00604
<a name="l00605"></a>00605 log_debug(<span class="stringliteral">"recv_data: read %d bytes, rcvbuf has %zu bytes"</span>,
<a name="l00606"></a>00606 cc, <a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.fullbytes());
<a name="l00607"></a>00607 <span class="keywordflow">if</span> (<a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1Connection.html#9d64c7b8b7595e2cf0cdc16fcc2c6c9a" title="Utility function to downcast the params_ pointer that&#39;s stored in the CLConnection...">tcp_lparams</a>()-><a class="code" href="classdtn_1_1TCPConvergenceLayer_1_1TCPLinkParams.html#24b7d1e5111e005cf9e90222deec0ecb" title="Log a hexdump of all traffic.">hexdump_</a>) {
<a name="l00608"></a>00608 oasys::HexDumpBuffer <a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">hex</a>;
<a name="l00609"></a>00609 hex.append((u_char*)<a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.end(), cc);
<a name="l00610"></a>00610 log_multiline(oasys::LOG_ALWAYS, hex.hexify().c_str());
<a name="l00611"></a>00611 }
<a name="l00612"></a>00612 <a class="code" href="classdtn_1_1CLConnection.html#483ff0dd2871a812491c16aa8d3f9124" title="Buffer for incoming data.">recvbuf_</a>.fill(cc);
<a name="l00613"></a>00613 }
<a name="l00614"></a>00614
<a name="l00615"></a>00615 } <span class="comment">// namespace dtn</span>
</pre></div></div>
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