Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // rtpduphello. |
| 2 | // A very simple program for testing and illustrating basic features of ccRTP. |
| 3 | // Copyright (C) 2001,2002 Federico Montesino <fedemp@altern.org> |
| 4 | // |
| 5 | // This program is free software; you can redistribute it and/or modify |
| 6 | // it under the terms of the GNU General Public License as published by |
| 7 | // the Free Software Foundation; either version 2 of the License, or |
| 8 | // (at your option) any later version. |
| 9 | // |
| 10 | // This program is distributed in the hope that it will be useful, |
| 11 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | // GNU General Public License for more details. |
| 14 | // |
| 15 | // You should have received a copy of the GNU General Public License |
| 16 | // along with this program; if not, write to the Free Software |
| 17 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | |
| 19 | |
| 20 | // This is an introductory example file that illustrates basic usage |
| 21 | // of ccRTP. You will also see a bit on how to use CommonC++ threads. |
| 22 | |
| 23 | // It is a typical hello world program. It consists of tow duplex |
| 24 | // connections that talk each other through RTP packets. They do not |
| 25 | // say more than a typical salutation message. They both send and |
| 26 | // receive messages, and print the messages they receive. |
| 27 | |
| 28 | |
| 29 | #include <cstdio> |
| 30 | #include <cstdlib> |
| 31 | // In order to use ccRTP, the RTP stack of CommonC++, you only need to |
| 32 | // include ... |
| 33 | #include <ccrtp/ext.h> |
| 34 | |
| 35 | #ifdef CCXX_NAMESPACES |
| 36 | using namespace ost; |
| 37 | using namespace std; |
| 38 | #endif |
| 39 | |
| 40 | /** |
| 41 | * @class ccRTP_dupHello |
| 42 | * This is the class that will do almost everything. |
| 43 | */ |
| 44 | class ccRTP_dupHello: public Thread |
| 45 | { |
| 46 | private: |
| 47 | // There will be two duplex connections. They both will send |
| 48 | // and receive packets. |
| 49 | RTPDuplex *duplexA, *duplexB; |
| 50 | |
| 51 | public: |
| 52 | // Destructor. |
| 53 | ~ccRTP_dupHello() |
| 54 | { |
| 55 | terminate(); |
| 56 | delete duplexA; |
| 57 | delete duplexB; |
| 58 | } |
| 59 | |
| 60 | // Constructor. |
| 61 | ccRTP_dupHello() : duplexA(NULL), duplexB(NULL) |
| 62 | {} |
| 63 | |
| 64 | // This method does almost everything. |
| 65 | void run(void) |
| 66 | { |
| 67 | // redefined from Thread. |
| 68 | |
| 69 | // Before using ccRTP you should learn something about other |
| 70 | // CommonC++ classes. We need InetHostAddress... |
| 71 | |
| 72 | // Construct loopback address |
| 73 | InetHostAddress local_ip; |
| 74 | local_ip = "127.0.0.1"; |
| 75 | |
| 76 | // Is that correct? |
| 77 | if( ! local_ip ) { |
| 78 | // this is equivalent to `! local_ip.isInetAddress()' |
| 79 | cerr << ": IP address is not correct!" << endl; |
| 80 | exit(); |
| 81 | } |
| 82 | |
| 83 | cout << local_ip.getHostname() << |
| 84 | " is going to talk to perself through " << |
| 85 | local_ip << "..." << endl; |
| 86 | |
| 87 | // ____Here comes the real RTP stuff____ |
| 88 | |
| 89 | // Construct two RTPSocket. 22222 will be the base |
| 90 | // port of A. 33334 will be the base port of B. |
| 91 | const int A_BASE = 22222; |
| 92 | const int B_BASE = 33334; |
| 93 | |
| 94 | duplexA = new RTPDuplex(local_ip,A_BASE,B_BASE); |
| 95 | |
| 96 | duplexB = new RTPDuplex(local_ip,B_BASE,A_BASE); |
| 97 | |
| 98 | // Set up A's connection |
| 99 | duplexA->setSchedulingTimeout(90000); |
| 100 | duplexA->setExpireTimeout(2500000); |
| 101 | if( duplexA->connect(local_ip,B_BASE) < 0 ) |
| 102 | cerr << "Duplex A could not connect."; |
| 103 | |
| 104 | // Set up B's connection |
| 105 | duplexB->setSchedulingTimeout(160000); |
| 106 | duplexB->setExpireTimeout(3500000); |
| 107 | if( duplexB->connect(local_ip,A_BASE) < 0 ) |
| 108 | cerr << "Duplex B could not connect."; |
| 109 | |
| 110 | // Let's check the queues (you should read the documentation |
| 111 | // so that you know what the queues are for). |
| 112 | |
| 113 | if( duplexA->RTPDataQueue::isActive() ) |
| 114 | cout << "The queue A is active." << endl; |
| 115 | else |
| 116 | cerr << "The queue A is not active." << endl; |
| 117 | |
| 118 | if( duplexB->RTPDataQueue::isActive() ) |
| 119 | cout << "The queue B is active." << endl; |
| 120 | else |
| 121 | cerr << "The queue B is not active." << endl; |
| 122 | |
| 123 | |
| 124 | cout << "Transmitting..." << endl; |
| 125 | |
| 126 | // This message will be sent on RTP packets, from A to |
| 127 | // B and from B to A. |
| 128 | unsigned char helloA[] = "Hello, brave gnu world from A!"; |
| 129 | unsigned char helloB[] = "Hello, brave gnu world from B!"; |
| 130 | |
| 131 | // This is not important |
| 132 | time_t sending_time; |
| 133 | time_t receiving_time; |
| 134 | char tmstring[30]; |
| 135 | |
| 136 | StaticPayloadFormat pf = sptMP2T; |
| 137 | duplexA->setPayloadFormat(pf); |
| 138 | duplexB->setPayloadFormat(pf); |
| 139 | |
| 140 | // This is the main loop, where packets are sent and receipt. |
| 141 | // A and B both will send and receive packets. |
| 142 | for( int i = 0 ; true ; i++ ) { |
| 143 | |
| 144 | // A and B do almost exactly the same things, |
| 145 | // I have kept this here -out of a send/receive |
| 146 | // method- in the interest of clarity. |
| 147 | |
| 148 | // A: Send an RTP packet |
| 149 | sending_time = time(NULL); |
| 150 | duplexA->putData(2*(i)*90000,helloA, |
| 151 | strlen((char *)helloA)); |
| 152 | // Tell it |
| 153 | strftime(tmstring,30,"%X",localtime(&sending_time)); |
| 154 | cout << "A: sending message at " << tmstring << "..." |
| 155 | << endl; |
| 156 | |
| 157 | // A: Receive an RTP packet |
| 158 | receiving_time = time(NULL); |
| 159 | const AppDataUnit* aduA = |
| 160 | duplexA->getData(duplexA->getFirstTimestamp()); |
| 161 | if ( aduA ) { |
| 162 | // Tell it |
| 163 | strftime(tmstring,30,"%X",localtime(&receiving_time)); |
| 164 | cout << "A:[receiving at " << tmstring << "]: " << |
| 165 | aduA->getData() << endl; |
| 166 | } |
| 167 | // Wait for 0.1 seconds |
| 168 | Thread::sleep(100); |
| 169 | |
| 170 | // B: Send an RTP packet |
| 171 | sending_time = time(NULL); |
| 172 | duplexB->putData(2*(i)*90000,helloB, |
| 173 | strlen((char *)helloB)); |
| 174 | // Tell it |
| 175 | strftime(tmstring,30,"%X",localtime(&sending_time)); |
| 176 | cout << "B: sending message at " << tmstring << "..." |
| 177 | << endl; |
| 178 | |
| 179 | // B: Receive an RTP packet |
| 180 | receiving_time = time(NULL); |
| 181 | const AppDataUnit* aduB = |
| 182 | duplexB->getData(duplexB->getFirstTimestamp()); |
| 183 | if ( aduB ) { |
| 184 | // Tell it |
| 185 | strftime(tmstring,30,"%X",localtime(&receiving_time)); |
| 186 | cout << "B:[receiving at " << tmstring << "]: " << |
| 187 | aduB->getData() << endl; |
| 188 | } |
| 189 | |
| 190 | Thread::sleep(1900); |
| 191 | } |
| 192 | |
| 193 | } |
| 194 | }; |
| 195 | |
| 196 | int main(int argc, char *argv[]) |
| 197 | { |
| 198 | // Construct the main thread. It will not run yet. |
| 199 | ccRTP_dupHello *hello = new ccRTP_dupHello; |
| 200 | |
| 201 | cout << "This is rtpduphello, a very simple test program for ccRTP." |
| 202 | << endl << "Strike [Enter] when you are fed up." << endl; |
| 203 | |
| 204 | // Start execution of hello. |
| 205 | hello->start(); |
| 206 | |
| 207 | cin.get(); |
| 208 | |
| 209 | cout << endl << "That's all" << endl; |
| 210 | |
| 211 | delete hello; |
| 212 | |
| 213 | exit(0); |
| 214 | } |
| 215 | |
| 216 | /** EMACS ** |
| 217 | * Local variables: |
| 218 | * mode: c++ |
| 219 | * c-basic-offset: 4 |
| 220 | * End: |
| 221 | */ |
| 222 | |
| 223 | |
| 224 | |