source: source/ariba/utility/bootstrap/modules/periodicbroadcast/PeriodicBroadcast.h@ 5464

Last change on this file since 5464 was 5464, checked in by Christoph Mayer, 15 years ago

-periodic broadcast fix

File size: 8.9 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
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12// modification, are permitted provided that the following conditions are
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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
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20//
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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,
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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();
178 }
179
180 void sendservice(Service service){
181
182 PeriodicBroadcastMessage msg( service.name, service.info1, service.info2, service.info3 );
183 Data data = data_serialize( msg, DEFAULT_V );
184 uint8_t* pnt = data.getBuffer();
185 size_t len = data.getLength() / 8;
186
187 boost::system::error_code err;
188
189 {
190 udp::endpoint endp(udp::v4(), PeriodicBroadcast::serverport_v4);
191 endp.address( boost::asio::ip::address_v4::broadcast() );
192 socket_v4.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
193 if(err) logging_warn("failed sending message through ipv4 socket");
194 }
195 {
196 udp::endpoint endp(udp::v6(), PeriodicBroadcast::serverport_v6);
197 endp.address( boost::asio::ip::address_v6::from_string("ff02::1") );
198 socket_v6.send_to( boost::asio::buffer(pnt, len), endp, 0, err );
199 if(err) logging_warn("failed sending message through ipv6 socket");
200 }
201 }
202
203 private:
204 void start_receive(){
205 socket_v4.async_receive_from(
206 boost::asio::buffer(recv_buffer_4), remote_endpoint_,
207 boost::bind(&udp_server::handle_receive_4, this,
208 boost::asio::placeholders::error,
209 boost::asio::placeholders::bytes_transferred));
210
211 socket_v6.async_receive_from(
212 boost::asio::buffer(recv_buffer_6), remote_endpoint_,
213 boost::bind(&udp_server::handle_receive_6, this,
214 boost::asio::placeholders::error,
215 boost::asio::placeholders::bytes_transferred));
216 }
217
218 void handle_receive_4(const boost::system::error_code& error,
219 std::size_t bytes_transferred){
220
221 if (!error || error == boost::asio::error::message_size)
222 handle_info(recv_buffer_4, bytes_transferred);
223 else
224 logging_warn("failed receiving broadcast data: " << error.message());
225
226 start_receive();
227 }
228
229 void handle_receive_6(const boost::system::error_code& error,
230 std::size_t bytes_transferred){
231
232 if (!error || error == boost::asio::error::message_size)
233 handle_info(recv_buffer_6, bytes_transferred);
234 else
235 logging_warn("failed receiving broadcast data: " << error.message());
236
237 start_receive();
238 }
239
240 void handle_info(boost::array<char, 1500>& buffer, std::size_t length){
241 PeriodicBroadcastMessage msg;
242
243 Data data( (uint8_t*)buffer.data(), length*8 );
244 data_deserialize( msg, data );
245
246 { // insert new found service
247 boost::mutex::scoped_lock( *servicesmutex );
248
249 ServiceList::iterator it = services->find( msg.getName() );
250 if( it != services->end() ){
251
252 it->second.info1 = msg.getInfo1();
253 it->second.info2 = msg.getInfo2();
254 it->second.info3 = msg.getInfo3();
255 it->second.lastseen = time(NULL);
256
257 } else {
258 Service s( msg.getName(), msg.getInfo1(), msg.getInfo2(), msg.getInfo3(), time(NULL));
259 services->insert( std::make_pair(msg.getName(), s) );
260 }
261 }
262 }
263
264 void handle_send(boost::shared_ptr<std::string> /*message*/,
265 const boost::system::error_code& error,
266 std::size_t /*bytes_transferred*/){
267
268 if(error)
269 logging_warn("failed sending out message");
270
271 }
272
273 };
274
275 udp_server server;
276
277};
278
279}} //namespace ariba, utility
280
281#endif // __BLUETOOTH_SDP_H
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