source: source/ariba/utility/bootstrap/modules/periodicbroadcast/PeriodicBroadcast.h@ 7911

Last change on this file since 7911 was 7532, checked in by Christoph Mayer, 15 years ago

-von außen konfigurierbare bootstrap module, -periodicbroadcast crash fix
File size: 10.3 KB
Line 
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
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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, string info);
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 class Service {
93 private:
94 string name;
95 string info1;
96 string info2;
97 string info3;
98 time_t lastseen;
99
100 public:
101 Service()
102 : name(""), info1(""), info2(""), info3(""), lastseen(0){
103 }
104
105 Service(const string& _name, const string& _info1,
106 const string& _info2, const string& _info3, const time_t& _lastseen = 0){
107 name.assign (_name);
108 info1.assign(_info1);
109 info2.assign(_info2);
110 info3.assign(_info3);
111 lastseen = _lastseen;
112 }
113
114 Service(const Service& rh){
115 name.assign (rh.name);
116 info1.assign(rh.info1);
117 info2.assign(rh.info2);
118 info3.assign(rh.info3);
119 lastseen = rh.lastseen;
120 }
121
122 string getName() const {
123 return name;
124 }
125
126 string getInfo1() const {
127 return info1;
128 }
129
130 string getInfo2() const {
131 return info2;
132 }
133
134 string getInfo3() const {
135 return info3;
136 }
137
138 time_t getLastseen() const {
139 return lastseen;
140 }
141
142 void setName(string _name){
143 name.assign(_name);
144 }
145
146 void setInfo1(string _info1){
147 info1.assign(_info1);
148 }
149
150 void setInfo2(string _info2){
151 info2.assign(_info2);
152 }
153
154 void setInfo3(string _info3){
155 info3.assign(_info3);
156 }
157
158 void setLastseen(time_t _lastseen){
159 lastseen = _lastseen;
160 }
161
162 Service& operator=(const Service& rh){
163 this->name.assign( rh.getName() );
164 this->info1.assign( rh.getInfo1() );
165 this->info2.assign( rh.getInfo2() );
166 this->info3.assign( rh.getInfo3() );
167 this->lastseen = rh.lastseen;
168 return *this;
169 }
170 };
171
172 typedef map<string,Service> ServiceList;
173
174 ServiceList localServices;
175 boost::mutex localServicesMutex;
176
177 ServiceList remoteServices;
178 boost::mutex remoteServicesMutex;
179
180 ServiceList newRemoteServices;
181 boost::mutex newRemoteServicesMutex;
182
183 boost::asio::io_service io_service;
184 boost::thread* io_service_thread;
185 static void threadFunc(PeriodicBroadcast* obj);
186
187 class udp_server {
188 private:
189 udp::socket socket_v4;
190 udp::socket socket_v6;
191 udp::endpoint remote_endpoint_;
192 boost::array<char, 1500> recv_buffer_4;
193 boost::array<char, 1500> recv_buffer_6;
194 ServiceList* services;
195 boost::mutex* servicesmutex;
196
197 public:
198 udp_server(boost::asio::io_service& io_service, ServiceList* _services, boost::mutex* _servicesmutex)
199 : socket_v4(io_service), socket_v6(io_service),
200 services(_services), servicesmutex(_servicesmutex) {
201
202 if( open4() ) start_receive_4();
203 if( open6() ) start_receive_6();
204 }
205
206 bool open4(){
207 boost::system::error_code err;
208
209 boost::asio::ip::udp::endpoint listen_endpoint_v4(
210 boost::asio::ip::address_v4::any(),
211 PeriodicBroadcast::serverport_v4);
212
213 err = socket_v4.open( listen_endpoint_v4.protocol(), err );
214 if(err){
215 logging_warn("failed opening ipv4 socket");
216 return false;
217 }
218
219 err = socket_v4.set_option( boost::asio::ip::udp::socket::reuse_address(true), err );
220 if(err){
221 logging_warn("failed setting reuse address option on ipv4 socket");
222 return false;
223 }
224
225 err = socket_v4.set_option( boost::asio::socket_base::broadcast(true), err );
226 if(err){
227 logging_warn("failed setting broadcast option on ipv4 socket");
228 return false;
229 }
230
231 err = socket_v4.bind( listen_endpoint_v4, err );
232 if(err){
233 logging_warn("failed binding ipv4 socket");
234 return false;
235 }
236
237 return true;
238 }
239
240 bool open6(){
241 boost::system::error_code err;
242
243 boost::asio::ip::udp::endpoint listen_endpoint_v6(
244 boost::asio::ip::address_v6::any(),
245 PeriodicBroadcast::serverport_v6);
246
247 err = socket_v6.open( listen_endpoint_v6.protocol(), err );
248 if(err){
249 logging_warn("failed opening ipv6 socket");
250 return false;
251 }
252
253 err = socket_v6.set_option( boost::asio::ip::udp::socket::reuse_address(true), err );
254 if(err){
255 logging_warn("failed setting reuse address option on ipv6 socket");
256 return false;
257 }
258
259 err = socket_v6.set_option( boost::asio::socket_base::broadcast(true), err );
260 if(err){
261 logging_warn("failed setting broadcast option on ipv6 socket");
262 return false;
263 }
264
265 err = socket_v6.bind( listen_endpoint_v6, err );
266 if(err){
267 logging_warn("failed binding ipv6 socket");
268 return false;
269 }
270
271 return true;
272 }
273
274 void sendservice(Service service){
275
276 PeriodicBroadcastMessage msg;
277 if(service.getName().empty()) return;
278
279 msg.setName( service.getName() );
280 msg.setInfo1( service.getInfo1() );
281 msg.setInfo2( service.getInfo2() );
282 msg.setInfo3( service.getInfo3() );
283
284 Data data = data_serialize( msg, DEFAULT_V );
285 uint8_t* pnt = data.getBuffer();
286 size_t len = data.getLength() / 8;
287
288 boost::system::error_code err;
289
290 {
291 udp::endpoint endp(udp::v4(), PeriodicBroadcast::serverport_v4);
292 endp.address( boost::asio::ip::address_v4::broadcast() );
293 socket_v4.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
294 if(err) logging_warn("failed sending message through ipv4 socket");
295 }
296 {
297 udp::endpoint endp(udp::v6(), PeriodicBroadcast::serverport_v6);
298 endp.address( boost::asio::ip::address_v6::from_string("ff02::1") );
299 socket_v6.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
300 if(err) logging_warn("failed sending message through ipv6 socket");
301 }
302 }
303
304 private:
305 void start_receive_4(){
306 socket_v4.async_receive_from(
307 boost::asio::buffer(recv_buffer_4), remote_endpoint_,
308 boost::bind(&udp_server::handle_receive_4, this,
309 boost::asio::placeholders::error,
310 boost::asio::placeholders::bytes_transferred));
311 }
312
313 void start_receive_6(){
314 socket_v6.async_receive_from(
315 boost::asio::buffer(recv_buffer_6), remote_endpoint_,
316 boost::bind(&udp_server::handle_receive_6, this,
317 boost::asio::placeholders::error,
318 boost::asio::placeholders::bytes_transferred));
319 }
320
321 void handle_receive_4(const boost::system::error_code& error,
322 std::size_t bytes_transferred){
323
324 if (!error || error == boost::asio::error::message_size)
325 handle_info(recv_buffer_4, bytes_transferred);
326 else
327 logging_warn("failed receiving broadcast data: " << error.message());
328
329 start_receive_4();
330 }
331
332 void handle_receive_6(const boost::system::error_code& error,
333 std::size_t bytes_transferred){
334
335 if (!error || error == boost::asio::error::message_size)
336 handle_info(recv_buffer_6, bytes_transferred);
337 else
338 logging_warn("failed receiving broadcast data: " << error.message());
339
340 start_receive_6();
341 }
342
343 void handle_info(boost::array<char, 1500>& buffer, std::size_t length){
344
345 try {
346
347 PeriodicBroadcastMessage msg;
348
349 Data data( (uint8_t*)buffer.data(), length*8 );
350 data_deserialize( msg, data );
351
352 { // insert new found service
353 boost::mutex::scoped_lock lock( *servicesmutex );
354 if(msg.getName().empty()) return;
355
356 ServiceList::iterator it = services->find( msg.getName() );
357 if( it != services->end() ){
358 it->second.setLastseen( time(NULL) );
359 } else {
360 Service s( msg.getName(), msg.getInfo1(), msg.getInfo2(), msg.getInfo3(), time(NULL));
361 services->insert( std::make_pair(msg.getName(), s) );
362 }
363 }
364
365 }catch(...){
366 /* ignore error */
367 }
368 }
369
370 void handle_send(boost::shared_ptr<std::string> /*message*/,
371 const boost::system::error_code& error,
372 std::size_t /*bytes_transferred*/){
373
374 if(error)
375 logging_warn("failed sending out message");
376 }
377 };
378
379 udp_server server;
380};
381
382}} //namespace ariba, utility
383
384#endif // __BLUETOOTH_SDP_H
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