source: source/ariba/utility/bootstrap/modules/periodicbroadcast/PeriodicBroadcast.h@ 5498

Last change on this file since 5498 was 5479, checked in by Christoph Mayer, 15 years ago
File size: 9.0 KB
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1// [License]
2// The Ariba-Underlay Copyright
3//
4// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
5//
6// Institute of Telematics
7// UniversitÀt Karlsruhe (TH)
8// Zirkel 2, 76128 Karlsruhe
9// Germany
10//
11// Redistribution and use in source and binary forms, with or without
12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
22// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33// The views and conclusions contained in the software and documentation
34// are those of the authors and should not be interpreted as representing
35// official policies, either expressed or implied, of the Institute of
36// Telematics.
37// [License]
38
39#ifndef __PERIODIC_BROADCAST_H
40#define __PERIODIC_BROADCAST_H
41
42#include "ariba/config.h"
43
44#include <map>
45#include <string>
46#include <ctime>
47#include <iostream>
48#include <boost/asio.hpp>
49#include <boost/foreach.hpp>
50#include <boost/thread/mutex.hpp>
51#include <boost/thread/thread.hpp>
52#include "ariba/utility/bootstrap/modules/BootstrapModule.h"
53#include "ariba/utility/logging/Logging.h"
54#include "ariba/utility/system/Timer.h"
55#include "PeriodicBroadcastMessage.h"
56
57using std::map;
58using std::string;
59using std::cout;
60using boost::asio::ip::udp;
61
62namespace ariba {
63namespace utility {
64
65class PeriodicBroadcast : public BootstrapModule, public Timer {
66 use_logging_h(PeriodicBroadcast);
67public:
68 PeriodicBroadcast(BootstrapInformationCallback* _callback);
69 virtual ~PeriodicBroadcast();
70
71 virtual void start();
72 virtual void stop();
73
74 virtual string getName();
75 virtual string getInformation();
76 virtual bool isFunctional();
77 virtual void publishService(string name, string info1, string info2, string info3);
78 virtual void revokeService(string name);
79
80protected:
81 virtual void eventFunction();
82
83private:
84 void sendLocalServices();
85 void updateRemoteServices();
86
87 static const long timerinterval; // used to send out updates on our services and check for new services
88 static const long servicetimeout; // timeout after that a service is dead when we did not receive updates
89 static const unsigned int serverport_v4;
90 static const unsigned int serverport_v6;
91
92 typedef struct _Service {
93 string name;
94 string info1;
95 string info2;
96 string info3;
97 time_t lastseen;
98
99 _Service()
100 : name(""), info1(""), info2(""), info3(""), lastseen(0){
101 }
102
103 _Service(const string& _name, const string& _info1,
104 const string& _info2, const string& _info3, const time_t& _lastseen = 0)
105 : name(_name), info1(_info1), info2(_info2), info3(_info3), lastseen(_lastseen){
106 }
107
108 _Service(const _Service& rh)
109 : name(rh.name), info1(rh.info1), info2(rh.info2),
110 info3(rh.info3), lastseen(rh.lastseen){
111 }
112 } Service;
113
114 typedef map<string,Service> ServiceList;
115 ServiceList localServices;
116 boost::mutex localServicesMutex;
117
118 ServiceList remoteServices;
119 boost::mutex remoteServicesMutex;
120
121 ServiceList newRemoteServices;
122 boost::mutex newRemoteServicesMutex;
123
124 boost::asio::io_service io_service;
125 boost::thread* io_service_thread;
126 static void threadFunc(PeriodicBroadcast* obj);
127
128 class udp_server {
129 private:
130 udp::socket socket_v4;
131 udp::socket socket_v6;
132 udp::endpoint remote_endpoint_;
133 boost::array<char, 1500> recv_buffer_4;
134 boost::array<char, 1500> recv_buffer_6;
135 ServiceList* services;
136 boost::mutex* servicesmutex;
137
138 public:
139 udp_server(boost::asio::io_service& io_service, ServiceList* _services, boost::mutex* _servicesmutex)
140 : services(_services), servicesmutex(_servicesmutex),
141 socket_v4(io_service), socket_v6(io_service) {
142
143 boost::asio::ip::udp::endpoint listen_endpoint_v4(
144 boost::asio::ip::address_v4::any(),
145 PeriodicBroadcast::serverport_v4);
146
147 boost::asio::ip::udp::endpoint listen_endpoint_v6(
148 boost::asio::ip::address_v6::any(),
149 PeriodicBroadcast::serverport_v6);
150
151 boost::system::error_code err;
152
153 err = socket_v4.open( listen_endpoint_v4.protocol(), err );
154 if(err) logging_warn("failed opening ipv4 socket");
155
156 err = socket_v6.open( listen_endpoint_v6.protocol(), err );
157 if(err) logging_warn("failed opening ipv6 socket");
158
159 err = socket_v4.set_option( boost::asio::ip::udp::socket::reuse_address(true), err );
160 if(err) logging_warn("failed setting reuse address option on ipv4 socket");
161
162 err = socket_v6.set_option( boost::asio::ip::udp::socket::reuse_address(true), err );
163 if(err) logging_warn("failed setting reuse address option on ipv6 socket");
164
165 err = socket_v4.set_option( boost::asio::socket_base::broadcast(true), err );
166 if(err) logging_warn("failed setting broadcast option on ipv4 socket");
167
168 err = socket_v6.set_option( boost::asio::socket_base::broadcast(true), err );
169 if(err) logging_warn("failed setting broadcast option on ipv6 socket");
170
171 err = socket_v4.bind( listen_endpoint_v4, err );
172 if(err) logging_warn("failed binding ipv4 socket");
173
174 err = socket_v6.bind( listen_endpoint_v6, err );
175 if(err) logging_warn("failed binding ipv6 socket");
176
177 start_receive_4();
178 start_receive_6();
179 }
180
181 void sendservice(Service service){
182
183 PeriodicBroadcastMessage msg;
184
185 msg.setName( service.name );
186 msg.setInfo1( service.info1 );
187 msg.setInfo2( service.info2 );
188 msg.setInfo3( service.info3 );
189
190 Data data = data_serialize( msg, DEFAULT_V );
191 uint8_t* pnt = data.getBuffer();
192 size_t len = data.getLength() / 8;
193
194 boost::system::error_code err;
195
196 {
197 udp::endpoint endp(udp::v4(), PeriodicBroadcast::serverport_v4);
198 endp.address( boost::asio::ip::address_v4::broadcast() );
199 socket_v4.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
200 if(err) logging_warn("failed sending message through ipv4 socket");
201 }
202 {
203 udp::endpoint endp(udp::v6(), PeriodicBroadcast::serverport_v6);
204 endp.address( boost::asio::ip::address_v6::from_string("ff02::1") );
205 socket_v6.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
206 if(err) logging_warn("failed sending message through ipv6 socket");
207 }
208 }
209
210 private:
211 void start_receive_4(){
212 socket_v4.async_receive_from(
213 boost::asio::buffer(recv_buffer_4), remote_endpoint_,
214 boost::bind(&udp_server::handle_receive_4, this,
215 boost::asio::placeholders::error,
216 boost::asio::placeholders::bytes_transferred));
217 }
218
219 void start_receive_6(){
220 socket_v6.async_receive_from(
221 boost::asio::buffer(recv_buffer_6), remote_endpoint_,
222 boost::bind(&udp_server::handle_receive_6, this,
223 boost::asio::placeholders::error,
224 boost::asio::placeholders::bytes_transferred));
225 }
226
227 void handle_receive_4(const boost::system::error_code& error,
228 std::size_t bytes_transferred){
229
230 if (!error || error == boost::asio::error::message_size)
231 handle_info(recv_buffer_4, bytes_transferred);
232 else
233 logging_warn("failed receiving broadcast data: " << error.message());
234
235 start_receive_4();
236 }
237
238 void handle_receive_6(const boost::system::error_code& error,
239 std::size_t bytes_transferred){
240
241 if (!error || error == boost::asio::error::message_size)
242 handle_info(recv_buffer_6, bytes_transferred);
243 else
244 logging_warn("failed receiving broadcast data: " << error.message());
245
246 start_receive_6();
247 }
248
249 void handle_info(boost::array<char, 1500>& buffer, std::size_t length){
250 PeriodicBroadcastMessage msg;
251
252 Data data( (uint8_t*)buffer.data(), length*8 );
253 data_deserialize( msg, data );
254
255 { // insert new found service
256 boost::mutex::scoped_lock( *servicesmutex );
257
258 ServiceList::iterator it = services->find( msg.getName() );
259 if( it != services->end() ){
260
261 it->second.info1 = msg.getInfo1();
262 it->second.info2 = msg.getInfo2();
263 it->second.info3 = msg.getInfo3();
264 it->second.lastseen = time(NULL);
265
266 } else {
267 Service s( msg.getName(), msg.getInfo1(), msg.getInfo2(), msg.getInfo3(), time(NULL));
268 services->insert( std::make_pair(msg.getName(), s) );
269 }
270 }
271 }
272
273 void handle_send(boost::shared_ptr<std::string> /*message*/,
274 const boost::system::error_code& error,
275 std::size_t /*bytes_transferred*/){
276
277 if(error)
278 logging_warn("failed sending out message");
279 }
280 };
281
282 udp_server server;
283};
284
285}} //namespace ariba, utility
286
287#endif // __BLUETOOTH_SDP_H
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