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<div class="title">rtpduphello.cpp</div> </div>
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<p>A basic example of how to use <a class="el" href="class_r_t_p_duplex.html" title="A peer associated RTP socket pair for physically connected peer hosts. ">RTPDuplex</a></p>
<div class="fragment"><div class="line"><span class="comment">// rtpduphello.</span></div>
<div class="line"><span class="comment">// A very simple program for testing and illustrating basic features of ccRTP.</span></div>
<div class="line"><span class="comment">// Copyright (C) 2001,2002 Federico Montesino <fedemp@altern.org></span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><span class="comment">// it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><span class="comment">// the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><span class="comment">// (at your option) any later version.</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><span class="comment">// GNU General Public License for more details.</span></div>
<div class="line"><span class="comment">//</span></div>
<div class="line"><span class="comment">// You should have received a copy of the GNU General Public License</span></div>
<div class="line"><span class="comment">// along with this program; if not, write to the Free Software</span></div>
<div class="line"><span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"><span class="comment">// This is an introductory example file that illustrates basic usage</span></div>
<div class="line"><span class="comment">// of ccRTP. You will also see a bit on how to use CommonC++ threads.</span></div>
<div class="line"></div>
<div class="line"><span class="comment">// It is a typical hello world program. It consists of tow duplex</span></div>
<div class="line"><span class="comment">// connections that talk each other through RTP packets. They do not</span></div>
<div class="line"><span class="comment">// say more than a typical salutation message. They both send and</span></div>
<div class="line"><span class="comment">// receive messages, and print the messages they receive.</span></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <cstdio></span></div>
<div class="line"><span class="preprocessor">#include <cstdlib></span></div>
<div class="line"><span class="comment">// In order to use ccRTP, the RTP stack of CommonC++, you only need to</span></div>
<div class="line"><span class="comment">// include ...</span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="ext_8h.html">ccrtp/ext.h</a>></span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#ifdef CCXX_NAMESPACES</span></div>
<div class="line"><span class="keyword">using namespace </span>ost;</div>
<div class="line"><span class="keyword">using namespace </span>std;</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"></div>
<div class="line"><span class="keyword">class </span>ccRTP_dupHello: <span class="keyword">public</span> Thread</div>
<div class="line">{</div>
<div class="line"><span class="keyword">private</span>:</div>
<div class="line"> <span class="comment">// There will be two duplex connections. They both will send</span></div>
<div class="line"> <span class="comment">// and receive packets.</span></div>
<div class="line"> <a name="_a0"></a><a class="code" href="class_r_t_p_duplex.html">RTPDuplex</a> *duplexA, *duplexB;</div>
<div class="line"></div>
<div class="line"><span class="keyword">public</span>:</div>
<div class="line"> <span class="comment">// Destructor.</span></div>
<div class="line"> ~ccRTP_dupHello()</div>
<div class="line"> {</div>
<div class="line"> terminate();</div>
<div class="line"> <span class="keyword">delete</span> duplexA;</div>
<div class="line"> <span class="keyword">delete</span> duplexB;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Constructor.</span></div>
<div class="line"> ccRTP_dupHello() : duplexA(NULL), duplexB(NULL)</div>
<div class="line"> {}</div>
<div class="line"></div>
<div class="line"> <span class="comment">// This method does almost everything.</span></div>
<div class="line"> <span class="keywordtype">void</span> run(<span class="keywordtype">void</span>)</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// redefined from Thread.</span></div>
<div class="line"></div>
<div class="line"> <span class="comment">// Before using ccRTP you should learn something about other</span></div>
<div class="line"> <span class="comment">// CommonC++ classes. We need InetHostAddress...</span></div>
<div class="line"></div>
<div class="line"> <span class="comment">// Construct loopback address</span></div>
<div class="line"> InetHostAddress local_ip;</div>
<div class="line"> local_ip = <span class="stringliteral">"127.0.0.1"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Is that correct?</span></div>
<div class="line"> <span class="keywordflow">if</span>( ! local_ip ) {</div>
<div class="line"> <span class="comment">// this is equivalent to `! local_ip.isInetAddress()'</span></div>
<div class="line"> cerr << <span class="stringliteral">": IP address is not correct!"</span> << endl;</div>
<div class="line"> exit();</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> cout << local_ip.getHostname() <<</div>
<div class="line"> <span class="stringliteral">" is going to talk to perself through "</span> <<</div>
<div class="line"> local_ip << <span class="stringliteral">"..."</span> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// ____Here comes the real RTP stuff____</span></div>
<div class="line"></div>
<div class="line"> <span class="comment">// Construct two RTPSocket. 22222 will be the base</span></div>
<div class="line"> <span class="comment">// port of A. 33334 will be the base port of B.</span></div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">int</span> A_BASE = 22222;</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">int</span> B_BASE = 33334;</div>
<div class="line"></div>
<div class="line"> duplexA = <span class="keyword">new</span> <a class="code" href="class_r_t_p_duplex.html">RTPDuplex</a>(local_ip,A_BASE,B_BASE);</div>
<div class="line"></div>
<div class="line"> duplexB = <span class="keyword">new</span> <a class="code" href="class_r_t_p_duplex.html">RTPDuplex</a>(local_ip,B_BASE,A_BASE);</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Set up A's connection</span></div>
<div class="line"> duplexA-><a name="a1"></a><a class="code" href="class_outgoing_data_queue.html#aa602fdcd5d4d21b54eb31c7dc526bc39">setSchedulingTimeout</a>(90000);</div>
<div class="line"> duplexA-><a name="a2"></a><a class="code" href="class_outgoing_data_queue.html#ae35a0ebe6fd9da0f0cf9504319bd5c1c">setExpireTimeout</a>(2500000);</div>
<div class="line"> <span class="keywordflow">if</span>( duplexA-><a name="a3"></a><a class="code" href="class_r_t_p_duplex.html#a7fd455d5cf064c1da4a2a9bb897242c0">connect</a>(local_ip,B_BASE) < 0 )</div>
<div class="line"> cerr << <span class="stringliteral">"Duplex A could not connect."</span>;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Set up B's connection</span></div>
<div class="line"> duplexB-><a class="code" href="class_outgoing_data_queue.html#aa602fdcd5d4d21b54eb31c7dc526bc39">setSchedulingTimeout</a>(160000);</div>
<div class="line"> duplexB-><a class="code" href="class_outgoing_data_queue.html#ae35a0ebe6fd9da0f0cf9504319bd5c1c">setExpireTimeout</a>(3500000);</div>
<div class="line"> <span class="keywordflow">if</span>( duplexB-><a class="code" href="class_r_t_p_duplex.html#a7fd455d5cf064c1da4a2a9bb897242c0">connect</a>(local_ip,A_BASE) < 0 )</div>
<div class="line"> cerr << <span class="stringliteral">"Duplex B could not connect."</span>;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Let's check the queues (you should read the documentation</span></div>
<div class="line"> <span class="comment">// so that you know what the queues are for).</span></div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span>( duplexA->RTPDataQueue::isActive() )</div>
<div class="line"> cout << <span class="stringliteral">"The queue A is active."</span> << endl;</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> cerr << <span class="stringliteral">"The queue A is not active."</span> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span>( duplexB->RTPDataQueue::isActive() )</div>
<div class="line"> cout << <span class="stringliteral">"The queue B is active."</span> << endl;</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> cerr << <span class="stringliteral">"The queue B is not active."</span> << endl;</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> cout << <span class="stringliteral">"Transmitting..."</span> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// This message will be sent on RTP packets, from A to</span></div>
<div class="line"> <span class="comment">// B and from B to A.</span></div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> helloA[] = <span class="stringliteral">"Hello, brave gnu world from A!"</span>;</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> helloB[] = <span class="stringliteral">"Hello, brave gnu world from B!"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// This is not important</span></div>
<div class="line"> time_t sending_time;</div>
<div class="line"> time_t receiving_time;</div>
<div class="line"> <span class="keywordtype">char</span> tmstring[30];</div>
<div class="line"></div>
<div class="line"> <a name="_a4"></a><a class="code" href="class_static_payload_format.html">StaticPayloadFormat</a> pf = <a name="a5"></a><a class="code" href="group__payload.html#gga7644623ce29b8ca519d7e3f276b6ddc6a3f5b07dca910f599be16c871ebbb29d1">sptMP2T</a>;</div>
<div class="line"> duplexA-><a name="a6"></a><a class="code" href="class_r_t_p_queue_base.html#a6601346e22925ebc740bc96c0b167375">setPayloadFormat</a>(pf);</div>
<div class="line"> duplexB-><a class="code" href="class_r_t_p_queue_base.html#a6601346e22925ebc740bc96c0b167375">setPayloadFormat</a>(pf);</div>
<div class="line"></div>
<div class="line"> <span class="comment">// This is the main loop, where packets are sent and receipt.</span></div>
<div class="line"> <span class="comment">// A and B both will send and receive packets.</span></div>
<div class="line"> <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0 ; true ; i++ ) {</div>
<div class="line"></div>
<div class="line"> <span class="comment">// A and B do almost exactly the same things,</span></div>
<div class="line"> <span class="comment">// I have kept this here -out of a send/receive</span></div>
<div class="line"> <span class="comment">// method- in the interest of clarity.</span></div>
<div class="line"></div>
<div class="line"> <span class="comment">// A: Send an RTP packet</span></div>
<div class="line"> sending_time = time(NULL);</div>
<div class="line"> duplexA-><a name="a7"></a><a class="code" href="class_outgoing_data_queue.html#ac47cec242d96bc326f0292890e570d64">putData</a>(2*(i)*90000,helloA,</div>
<div class="line"> strlen((<span class="keywordtype">char</span> *)helloA));</div>
<div class="line"> <span class="comment">// Tell it</span></div>
<div class="line"> strftime(tmstring,30,<span class="stringliteral">"%X"</span>,localtime(&sending_time));</div>
<div class="line"> cout << <span class="stringliteral">"A: sending message at "</span> << tmstring << <span class="stringliteral">"..."</span></div>
<div class="line"> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// A: Receive an RTP packet</span></div>
<div class="line"> receiving_time = time(NULL);</div>
<div class="line"> <span class="keyword">const</span> <a name="_a8"></a><a class="code" href="class_app_data_unit.html">AppDataUnit</a>* aduA =</div>
<div class="line"> duplexA-><a name="a9"></a><a class="code" href="class_incoming_data_queue.html#a830c8a49a36dcd3e30c4e98f15e8af14">getData</a>(duplexA-><a name="a10"></a><a class="code" href="class_incoming_data_queue.html#ac46dbd1d341af3fa0c20e8115f78cf28">getFirstTimestamp</a>());</div>
<div class="line"> <span class="keywordflow">if</span> ( aduA ) {</div>
<div class="line"> <span class="comment">// Tell it</span></div>
<div class="line"> strftime(tmstring,30,<span class="stringliteral">"%X"</span>,localtime(&receiving_time));</div>
<div class="line"> cout << <span class="stringliteral">"A:[receiving at "</span> << tmstring << <span class="stringliteral">"]: "</span> <<</div>
<div class="line"> aduA-><a name="a11"></a><a class="code" href="class_app_data_unit.html#abe15787e1cc84dd03b0769a5546d7a38">getData</a>() << endl;</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">// Wait for 0.1 seconds</span></div>
<div class="line"> Thread::sleep(100);</div>
<div class="line"></div>
<div class="line"> <span class="comment">// B: Send an RTP packet</span></div>
<div class="line"> sending_time = time(NULL);</div>
<div class="line"> duplexB-><a class="code" href="class_outgoing_data_queue.html#ac47cec242d96bc326f0292890e570d64">putData</a>(2*(i)*90000,helloB,</div>
<div class="line"> strlen((<span class="keywordtype">char</span> *)helloB));</div>
<div class="line"> <span class="comment">// Tell it</span></div>
<div class="line"> strftime(tmstring,30,<span class="stringliteral">"%X"</span>,localtime(&sending_time));</div>
<div class="line"> cout << <span class="stringliteral">"B: sending message at "</span> << tmstring << <span class="stringliteral">"..."</span></div>
<div class="line"> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// B: Receive an RTP packet</span></div>
<div class="line"> receiving_time = time(NULL);</div>
<div class="line"> <span class="keyword">const</span> <a class="code" href="class_app_data_unit.html">AppDataUnit</a>* aduB =</div>
<div class="line"> duplexB-><a class="code" href="class_incoming_data_queue.html#a830c8a49a36dcd3e30c4e98f15e8af14">getData</a>(duplexB-><a class="code" href="class_incoming_data_queue.html#ac46dbd1d341af3fa0c20e8115f78cf28">getFirstTimestamp</a>());</div>
<div class="line"> <span class="keywordflow">if</span> ( aduB ) {</div>
<div class="line"> <span class="comment">// Tell it</span></div>
<div class="line"> strftime(tmstring,30,<span class="stringliteral">"%X"</span>,localtime(&receiving_time));</div>
<div class="line"> cout << <span class="stringliteral">"B:[receiving at "</span> << tmstring << <span class="stringliteral">"]: "</span> <<</div>
<div class="line"> aduB-><a class="code" href="class_app_data_unit.html#abe15787e1cc84dd03b0769a5546d7a38">getData</a>() << endl;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> Thread::sleep(1900);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> }</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[])</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// Construct the main thread. It will not run yet.</span></div>
<div class="line"> ccRTP_dupHello *hello = <span class="keyword">new</span> ccRTP_dupHello;</div>
<div class="line"></div>
<div class="line"> cout << <span class="stringliteral">"This is rtpduphello, a very simple test program for ccRTP."</span></div>
<div class="line"> << endl << <span class="stringliteral">"Strike [Enter] when you are fed up."</span> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Start execution of hello.</span></div>
<div class="line"> hello->start();</div>
<div class="line"></div>
<div class="line"> cin.get();</div>
<div class="line"></div>
<div class="line"> cout << endl << <span class="stringliteral">"That's all"</span> << endl;</div>
<div class="line"></div>
<div class="line"> <span class="keyword">delete</span> hello;</div>
<div class="line"></div>
<div class="line"> exit(0);</div>
<div class="line">}</div>
<div class="line"></div>
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