1 | // [License] |
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2 | // The Ariba-Underlay Copyright |
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3 | // |
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4 | // Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH) |
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5 | // |
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6 | // Institute of Telematics |
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7 | // UniversitÀt Karlsruhe (TH) |
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8 | // Zirkel 2, 76128 Karlsruhe |
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9 | // Germany |
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10 | // |
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11 | // Redistribution and use in source and binary forms, with or without |
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12 | // modification, are permitted provided that the following conditions are |
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13 | // met: |
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14 | // |
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15 | // 1. Redistributions of source code must retain the above copyright |
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16 | // notice, this list of conditions and the following disclaimer. |
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17 | // 2. Redistributions in binary form must reproduce the above copyright |
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18 | // notice, this list of conditions and the following disclaimer in the |
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19 | // documentation and/or other materials provided with the distribution. |
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20 | // |
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21 | // THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND |
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22 | // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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24 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR |
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25 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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26 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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27 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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28 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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29 | // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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30 | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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31 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 | // |
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33 | // The views and conclusions contained in the software and documentation |
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34 | // are those of the authors and should not be interpreted as representing |
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35 | // official policies, either expressed or implied, of the Institute of |
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36 | // Telematics. |
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37 | // [License] |
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38 | |
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39 | #include "BaseCommunication.h" |
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40 | |
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41 | #include "networkinfo/AddressDiscovery.h" |
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42 | #include "ariba/utility/types/PeerID.h" |
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43 | #include <boost/function.hpp> |
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44 | |
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45 | #ifdef UNDERLAY_OMNET |
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46 | #include "ariba/communication/modules/transport/omnet/AribaOmnetModule.h" |
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47 | #include "ariba/communication/modules/network/omnet/OmnetNetworkProtocol.h" |
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48 | #include "ariba/utility/system/StartupWrapper.h" |
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49 | |
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50 | using ariba::communication::AribaOmnetModule; |
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51 | using ariba::communication::OmnetNetworkProtocol; |
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52 | using ariba::utility::StartupWrapper; |
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53 | #endif |
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54 | |
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55 | namespace ariba { |
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56 | namespace communication { |
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57 | |
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58 | using ariba::utility::PeerID; |
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59 | |
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60 | use_logging_cpp(BaseCommunication); |
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61 | |
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62 | /// adds an endpoint to the list |
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63 | void BaseCommunication::add_endpoint( const address_v* endpoint ) { |
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64 | if (endpoint==NULL) return; |
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65 | BOOST_FOREACH( endpoint_reference& ref, remote_endpoints ) { |
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66 | if (ref.endpoint->type_id() == endpoint->type_id() && *ref.endpoint == *endpoint) { |
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67 | ref.count++; |
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68 | return; |
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69 | } |
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70 | } |
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71 | endpoint_reference ref; |
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72 | ref.endpoint = endpoint->clone(); |
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73 | ref.count = 1; |
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74 | remote_endpoints.push_back(ref); |
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75 | } |
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76 | |
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77 | /// removes an endpoint from the list |
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78 | void BaseCommunication::remove_endpoint( const address_v* endpoint ) { |
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79 | if (endpoint==NULL) return; |
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80 | for (vector<endpoint_reference>::iterator i = remote_endpoints.begin(); |
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81 | i != remote_endpoints.end(); i++) { |
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82 | if ((*i->endpoint).type_id() == endpoint->type_id() && (*i->endpoint) == *endpoint) { |
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83 | i->count--; |
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84 | if (i->count==0) { |
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85 | logging_info("No more links to " << i->endpoint->to_string() << ": terminating transports!"); |
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86 | transport->terminate(i->endpoint); |
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87 | delete i->endpoint; |
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88 | remote_endpoints.erase(i); |
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89 | } |
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90 | return; |
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91 | } |
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92 | } |
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93 | } |
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94 | |
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95 | |
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96 | BaseCommunication::BaseCommunication() |
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97 | : currentSeqnum( 0 ), |
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98 | transport( NULL ), |
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99 | messageReceiver( NULL ), |
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100 | started( false ) |
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101 | { |
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102 | } |
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103 | |
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104 | |
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105 | BaseCommunication::~BaseCommunication(){ |
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106 | } |
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107 | |
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108 | |
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109 | void BaseCommunication::start() { |
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110 | logging_info( "Starting up ..." ); |
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111 | currentSeqnum = 0; |
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112 | |
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113 | // set local peer id |
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114 | localDescriptor.getPeerId() = PeerID::random(); |
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115 | logging_info( "Using PeerID: " << localDescriptor.getPeerId() ); |
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116 | |
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117 | // creating transports |
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118 | logging_info( "Creating transports ..." ); |
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119 | |
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120 | #ifdef UNDERLAY_OMNET |
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121 | AribaOmnetModule* module = StartupWrapper::getCurrentModule(); |
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122 | module->setServerPort( listenport ); |
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123 | |
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124 | transport = module; |
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125 | network = new OmnetNetworkProtocol( module ); |
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126 | #else |
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127 | transport = new transport_peer( localDescriptor.getEndpoints() ); |
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128 | #endif |
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129 | |
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130 | logging_info( "Searching for local locators ..." ); |
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131 | /** |
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132 | * DONT DO THAT: if(localDescriptor.getEndpoints().to_string().length() == 0) |
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133 | * since addresses are used to initialize transport addresses |
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134 | */ |
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135 | AddressDiscovery::discover_endpoints( localDescriptor.getEndpoints() ); |
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136 | logging_info( "Done. Local endpoints = " << localDescriptor.toString() ); |
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137 | |
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138 | transport->register_listener( this ); |
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139 | transport->start(); |
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140 | |
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141 | #ifndef UNDERLAY_OMNET |
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142 | // bind to the network change detection |
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143 | networkMonitor.registerNotification( this ); |
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144 | #endif |
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145 | |
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146 | // base comm startup done |
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147 | started = true; |
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148 | logging_info( "Started up." ); |
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149 | } |
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150 | |
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151 | void BaseCommunication::stop() { |
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152 | logging_info( "Stopping transports ..." ); |
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153 | |
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154 | transport->stop(); |
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155 | delete transport; |
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156 | started = false; |
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157 | |
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158 | logging_info( "Stopped." ); |
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159 | } |
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160 | |
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161 | bool BaseCommunication::isStarted(){ |
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162 | return started; |
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163 | } |
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164 | |
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165 | /// Sets the endpoints |
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166 | void BaseCommunication::setEndpoints( string& _endpoints ) { |
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167 | localDescriptor.getEndpoints().assign(_endpoints); |
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168 | logging_info("Setting local end-points: " |
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169 | << localDescriptor.getEndpoints().to_string()); |
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170 | } |
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171 | |
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172 | const LinkID BaseCommunication::establishLink( |
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173 | const EndpointDescriptor& descriptor, |
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174 | const LinkID& link_id, |
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175 | const QoSParameterSet& qos, |
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176 | const SecurityParameterSet& sec) { |
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177 | |
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178 | // copy link id |
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179 | LinkID linkid = link_id; |
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180 | |
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181 | // debug |
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182 | logging_debug( "Request to establish link" ); |
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183 | |
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184 | // create link identifier |
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185 | if (linkid.isUnspecified()) linkid = LinkID::create(); |
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186 | |
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187 | // create link descriptor |
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188 | logging_debug( "Creating new descriptor entry with local link id=" << linkid.toString() ); |
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189 | LinkDescriptor* ld = new LinkDescriptor(); |
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190 | ld->localLink = linkid; |
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191 | addLink( ld ); |
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192 | |
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193 | // send a message to request new link to remote |
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194 | logging_debug( "Send messages with request to open link to " << descriptor.toString() ); |
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195 | AribaBaseMsg baseMsg( AribaBaseMsg::typeLinkRequest, linkid ); |
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196 | baseMsg.getLocalDescriptor() = localDescriptor; |
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197 | baseMsg.getRemoteDescriptor().getPeerId() = descriptor.getPeerId(); |
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198 | |
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199 | // serialize and send message |
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200 | send( &baseMsg, descriptor ); |
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201 | |
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202 | return linkid; |
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203 | } |
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204 | |
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205 | void BaseCommunication::dropLink(const LinkID link) { |
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206 | |
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207 | logging_debug( "Starting to drop link " + link.toString() ); |
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208 | |
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209 | // see if we have the link |
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210 | LinkDescriptor& ld = queryLocalLink( link ); |
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211 | if( ld.isUnspecified() ) { |
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212 | logging_error( "Don't know the link you want to drop "+ link.toString() ); |
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213 | return; |
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214 | } |
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215 | |
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216 | // tell the registered listeners |
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217 | BOOST_FOREACH( CommunicationEvents* i, eventListener ) { |
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218 | i->onLinkDown( link, ld.localLocator, ld.remoteLocator ); |
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219 | } |
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220 | |
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221 | // create message to drop the link |
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222 | logging_debug( "Sending out link close request. for us, the link is closed now" ); |
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223 | AribaBaseMsg msg( AribaBaseMsg::typeLinkClose, ld.localLink, ld.remoteLink ); |
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224 | |
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225 | // send message to drop the link |
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226 | send( &msg, ld ); |
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227 | |
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228 | // remove from map |
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229 | removeLink(link); |
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230 | } |
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231 | |
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232 | seqnum_t BaseCommunication::sendMessage( const LinkID lid, const Message* message) { |
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233 | |
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234 | logging_debug( "Sending out message to link " << lid.toString() ); |
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235 | |
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236 | // query local link info |
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237 | LinkDescriptor& ld = queryLocalLink(lid); |
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238 | if( ld.isUnspecified() ){ |
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239 | logging_error( "Don't know the link with id " << lid.toString() ); |
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240 | return -1; |
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241 | } |
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242 | |
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243 | // link not up-> error |
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244 | if( !ld.up ) { |
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245 | logging_error("Can not send on link " << lid.toString() << ": link not up"); |
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246 | return -1; |
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247 | } |
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248 | |
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249 | // create message |
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250 | AribaBaseMsg msg( AribaBaseMsg::typeData, ld.localLink, ld.remoteLink ); |
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251 | |
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252 | // encapsulate the payload message |
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253 | msg.encapsulate( const_cast<Message*>(message) ); |
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254 | |
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255 | // send message |
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256 | send( &msg, ld ); |
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257 | |
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258 | // return sequence number |
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259 | return ++currentSeqnum; |
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260 | } |
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261 | |
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262 | const EndpointDescriptor& BaseCommunication::getEndpointDescriptor(const LinkID link) const { |
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263 | if( link.isUnspecified() ){ |
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264 | return localDescriptor; |
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265 | } else { |
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266 | LinkDescriptor& linkDesc = queryLocalLink(link); |
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267 | if (linkDesc.isUnspecified()) return EndpointDescriptor::UNSPECIFIED(); |
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268 | return linkDesc.remoteEndpoint; |
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269 | } |
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270 | } |
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271 | |
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272 | void BaseCommunication::registerEventListener(CommunicationEvents* _events){ |
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273 | if( eventListener.find( _events ) == eventListener.end() ) |
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274 | eventListener.insert( _events ); |
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275 | } |
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276 | |
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277 | void BaseCommunication::unregisterEventListener(CommunicationEvents* _events){ |
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278 | EventListenerSet::iterator i = eventListener.find( _events ); |
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279 | if( i != eventListener.end() ) |
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280 | eventListener.erase( i ); |
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281 | } |
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282 | |
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283 | SystemEventType TransportEvent("Transport"); |
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284 | SystemEventType MessageDispatchEvent("MessageDispatchEvent", TransportEvent ); |
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285 | |
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286 | /// called when a system event is emitted by system queue |
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287 | void BaseCommunication::handleSystemEvent(const SystemEvent& event) { |
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288 | |
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289 | // dispatch received messages |
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290 | if ( event.getType() == MessageDispatchEvent ){ |
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291 | logging_debug( "Forwarding message receiver" ); |
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292 | boost::function0<void>* handler = event.getData< boost::function0<void> >(); |
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293 | (*handler)(); |
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294 | delete handler; |
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295 | } |
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296 | } |
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297 | |
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298 | /** |
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299 | * called within the ASIO thread |
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300 | * when a message is received from underlay transport |
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301 | */ |
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302 | void BaseCommunication::receive_message(transport_connection::sptr connection, |
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303 | reboost::message_t msg) { |
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304 | |
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305 | logging_debug( "Dispatching message" ); |
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306 | |
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307 | boost::function0<void>* handler = new boost::function0<void>( |
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308 | boost::bind( |
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309 | &BaseCommunication::receiveMessage, |
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310 | this, |
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311 | connection, |
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312 | msg) |
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313 | ); |
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314 | |
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315 | SystemQueue::instance().scheduleEvent( |
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316 | SystemEvent(this, MessageDispatchEvent, handler) |
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317 | ); |
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318 | } |
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319 | |
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320 | /** |
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321 | * called within the ARIBA thread (System Queue) |
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322 | * when a message is received from underlay transport |
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323 | */ |
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324 | void BaseCommunication::receiveMessage(transport_connection::sptr connection, |
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325 | reboost::message_t message) |
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326 | { |
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327 | |
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328 | //// Adapt to old message system //// |
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329 | // Copy data |
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330 | size_t bytes_len = message.size(); |
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331 | uint8_t* bytes = new uint8_t[bytes_len]; |
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332 | message.read(bytes, 0, bytes_len); |
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333 | |
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334 | Data data(bytes, bytes_len * 8); |
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335 | |
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336 | Message legacy_message; |
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337 | legacy_message.setPayload(data); |
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338 | |
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339 | |
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340 | |
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341 | /// decapsulate message |
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342 | AribaBaseMsg* msg = legacy_message.decapsulate<AribaBaseMsg>(); |
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343 | logging_debug( "Receiving message of type " << msg->getTypeString() ); |
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344 | |
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345 | // handle message |
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346 | switch (msg->getType()) { |
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347 | |
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348 | // --------------------------------------------------------------------- |
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349 | // data message |
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350 | // --------------------------------------------------------------------- |
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351 | case AribaBaseMsg::typeData: { |
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352 | logging_debug( "Received data message, forwarding to overlay" ); |
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353 | if( messageReceiver != NULL ) { |
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354 | messageReceiver->receiveMessage( |
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355 | msg, msg->getRemoteLink(), NodeID::UNSPECIFIED |
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356 | ); |
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357 | } |
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358 | break; |
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359 | } |
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360 | |
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361 | // --------------------------------------------------------------------- |
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362 | // handle link request from remote |
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363 | // --------------------------------------------------------------------- |
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364 | case AribaBaseMsg::typeLinkRequest: { |
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365 | logging_debug( "Received link open request" ); |
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366 | |
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367 | /// not the correct peer id-> skip request |
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368 | if (!msg->getRemoteDescriptor().getPeerId().isUnspecified() |
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369 | && msg->getRemoteDescriptor().getPeerId() != localDescriptor.getPeerId()) { |
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370 | logging_info("Received link request for " |
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371 | << msg->getRemoteDescriptor().getPeerId().toString() |
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372 | << "but i'm " |
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373 | << localDescriptor.getPeerId() |
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374 | << ": Ignoring!"); |
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375 | break; |
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376 | } |
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377 | |
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378 | /// only answer the first request |
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379 | if (!queryRemoteLink(msg->getLocalLink()).isUnspecified()) { |
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380 | logging_debug("Link request already received. Ignore!"); |
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381 | break; |
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382 | } |
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383 | |
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384 | /// create link ids |
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385 | LinkID localLink = LinkID::create(); |
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386 | LinkID remoteLink = msg->getLocalLink(); |
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387 | logging_debug( |
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388 | "local=" << connection->getLocalEndpoint()->to_string() |
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389 | << " remote=" << connection->getRemoteEndpoint()->to_string() |
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390 | ); |
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391 | |
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392 | // check if link creation is allowed by ALL listeners |
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393 | bool allowlink = true; |
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394 | BOOST_FOREACH( CommunicationEvents* i, eventListener ){ |
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395 | allowlink &= i->onLinkRequest( localLink, |
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396 | connection->getLocalEndpoint(), |
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397 | connection->getRemoteEndpoint()); |
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398 | } |
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399 | |
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400 | // not allowed-> warn |
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401 | if( !allowlink ){ |
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402 | logging_warn( "Overlay denied creation of link" ); |
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403 | delete msg; |
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404 | return; |
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405 | } |
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406 | |
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407 | // create descriptor |
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408 | LinkDescriptor* ld = new LinkDescriptor(); |
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409 | ld->localLink = localLink; |
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410 | ld->remoteLink = remoteLink; |
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411 | ld->localLocator = connection->getLocalEndpoint()->clone(); |
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412 | ld->remoteLocator = connection->getRemoteEndpoint()->clone(); |
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413 | ld->connection = connection; |
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414 | ld->remoteEndpoint = msg->getLocalDescriptor(); |
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415 | add_endpoint(ld->remoteLocator); |
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416 | |
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417 | // add layer 1-3 addresses |
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418 | ld->remoteEndpoint.getEndpoints().add( |
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419 | ld->remoteLocator, endpoint_set::Layer1_3 | endpoint_set::NoLoopback); |
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420 | localDescriptor.getEndpoints().add( |
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421 | connection->getLocalEndpoint(), |
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422 | endpoint_set::Layer1_3 | endpoint_set::NoLoopback); |
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423 | |
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424 | // link is now up-> add it |
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425 | ld->up = true; |
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426 | addLink(ld); |
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427 | |
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428 | // link is up! |
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429 | logging_debug( "Link (initiated from remote) is up with " |
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430 | << "local(id=" << ld->localLink.toString() << "," |
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431 | << "locator=" << ld->localLocator->to_string() << ") " |
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432 | << "remote(id=" << ld->remoteLink.toString() << ", " |
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433 | << "locator=" << ld->remoteLocator->to_string() << ")" |
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434 | ); |
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435 | |
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436 | // sending link request reply |
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437 | logging_debug( "Sending link request reply with ids " |
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438 | << "local=" << localLink.toString() << ", " |
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439 | << "remote=" << remoteLink.toString() ); |
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440 | AribaBaseMsg reply( AribaBaseMsg::typeLinkReply, localLink, remoteLink ); |
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441 | reply.getLocalDescriptor() = localDescriptor; |
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442 | reply.getRemoteDescriptor() = ld->remoteEndpoint; |
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443 | |
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444 | send( &reply, *ld ); |
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445 | |
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446 | // inform listeners about new open link |
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447 | BOOST_FOREACH( CommunicationEvents* i, eventListener ) { |
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448 | i->onLinkUp( localLink, ld->localLocator, ld->remoteLocator); |
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449 | } |
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450 | |
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451 | // done |
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452 | break; |
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453 | } |
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454 | |
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455 | // --------------------------------------------------------------------- |
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456 | // handle link request reply |
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457 | // --------------------------------------------------------------------- |
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458 | case AribaBaseMsg::typeLinkReply: { |
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459 | logging_debug( "Received link open reply for a link we initiated" ); |
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460 | |
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461 | // this is a reply to a link open request, so we have already |
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462 | // a link mapping and can now set the remote link to valid |
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463 | LinkDescriptor& ld = queryLocalLink( msg->getRemoteLink() ); |
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464 | |
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465 | // no link found-> warn! |
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466 | if (ld.isUnspecified()) { |
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467 | logging_warn("Failed to find local link " << msg->getRemoteLink().toString()); |
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468 | delete msg; |
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469 | return; |
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470 | } |
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471 | |
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472 | // store the connection |
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473 | ld.connection = connection; |
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474 | |
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475 | // set remote locator and link id |
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476 | ld.remoteLink = msg->getLocalLink(); |
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477 | ld.remoteLocator = connection->getRemoteEndpoint()->clone(); |
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478 | ld.remoteEndpoint.getEndpoints().add( |
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479 | msg->getLocalDescriptor().getEndpoints(), |
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480 | endpoint_set::Layer1_4 |
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481 | ); |
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482 | |
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483 | localDescriptor.getEndpoints().add( |
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484 | msg->getRemoteDescriptor().getEndpoints(), |
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485 | endpoint_set::Layer1_3 |
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486 | ); |
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487 | ld.up = true; |
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488 | add_endpoint(ld.remoteLocator); |
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489 | |
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490 | logging_debug( "Link is now up with local id " |
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491 | << ld.localLink.toString() << " and remote id " |
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492 | << ld.remoteLink.toString() ); |
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493 | |
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494 | |
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495 | // inform lisneters about link up event |
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496 | BOOST_FOREACH( CommunicationEvents* i, eventListener ){ |
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497 | i->onLinkUp( ld.localLink, ld.localLocator, ld.remoteLocator ); |
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498 | } |
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499 | |
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500 | // done |
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501 | break; |
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502 | } |
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503 | |
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504 | // --------------------------------------------------------------------- |
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505 | // handle link close requests |
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506 | // --------------------------------------------------------------------- |
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507 | case AribaBaseMsg::typeLinkClose: { |
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508 | // get remote link |
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509 | const LinkID& localLink = msg->getRemoteLink(); |
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510 | logging_debug( "Received link close request for link " << localLink.toString() ); |
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511 | |
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512 | // searching for link, not found-> warn |
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513 | LinkDescriptor& linkDesc = queryLocalLink( localLink ); |
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514 | if (linkDesc.isUnspecified()) { |
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515 | logging_warn("Failed to find local link " << localLink.toString()); |
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516 | delete msg; |
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517 | return; |
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518 | } |
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519 | |
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520 | // inform listeners |
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521 | BOOST_FOREACH( CommunicationEvents* i, eventListener ){ |
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522 | i->onLinkDown( linkDesc.localLink, |
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523 | linkDesc.localLocator, linkDesc.remoteLocator ); |
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524 | } |
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525 | |
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526 | // remove the link descriptor |
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527 | removeLink( localLink ); |
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528 | |
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529 | // done |
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530 | break; |
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531 | } |
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532 | |
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533 | // --------------------------------------------------------------------- |
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534 | // handle link locator changes |
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535 | // --------------------------------------------------------------------- |
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536 | case AribaBaseMsg::typeLinkUpdate: { |
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537 | const LinkID& localLink = msg->getRemoteLink(); |
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538 | logging_debug( "Received link update for link " |
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539 | << localLink.toString() ); |
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540 | |
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541 | // find the link description |
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542 | LinkDescriptor& linkDesc = queryLocalLink( localLink ); |
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543 | if (linkDesc.isUnspecified()) { |
---|
544 | logging_warn("Failed to update local link " |
---|
545 | << localLink.toString()); |
---|
546 | delete msg; |
---|
547 | return; |
---|
548 | } |
---|
549 | |
---|
550 | // update the remote locator |
---|
551 | const address_v* oldremote = linkDesc.remoteLocator; |
---|
552 | linkDesc.remoteLocator = connection->getRemoteEndpoint()->clone(); |
---|
553 | |
---|
554 | // inform the listeners (local link has _not_ changed!) |
---|
555 | BOOST_FOREACH( CommunicationEvents* i, eventListener ){ |
---|
556 | i->onLinkChanged( |
---|
557 | linkDesc.localLink, // linkid |
---|
558 | linkDesc.localLocator, // old local |
---|
559 | linkDesc.localLocator, // new local |
---|
560 | oldremote, // old remote |
---|
561 | linkDesc.remoteLocator // new remote |
---|
562 | ); |
---|
563 | } |
---|
564 | |
---|
565 | // done |
---|
566 | break; |
---|
567 | } |
---|
568 | } |
---|
569 | |
---|
570 | delete msg; |
---|
571 | } |
---|
572 | |
---|
573 | /// add a newly allocated link to the set of links |
---|
574 | void BaseCommunication::addLink( LinkDescriptor* link ) { |
---|
575 | linkSet.push_back( link ); |
---|
576 | } |
---|
577 | |
---|
578 | /// remove a link from set |
---|
579 | void BaseCommunication::removeLink( const LinkID& localLink ) { |
---|
580 | for(LinkSet::iterator i=linkSet.begin(); i != linkSet.end(); i++){ |
---|
581 | if( (*i)->localLink != localLink) continue; |
---|
582 | remove_endpoint((*i)->remoteLocator); |
---|
583 | delete *i; |
---|
584 | linkSet.erase( i ); |
---|
585 | break; |
---|
586 | } |
---|
587 | } |
---|
588 | |
---|
589 | /// query a descriptor by local link id |
---|
590 | BaseCommunication::LinkDescriptor& BaseCommunication::queryLocalLink( const LinkID& link ) const { |
---|
591 | for (size_t i=0; i<linkSet.size();i++) |
---|
592 | if (linkSet[i]->localLink == link) return (LinkDescriptor&)*linkSet[i]; |
---|
593 | |
---|
594 | return LinkDescriptor::UNSPECIFIED(); |
---|
595 | } |
---|
596 | |
---|
597 | /// query a descriptor by remote link id |
---|
598 | BaseCommunication::LinkDescriptor& BaseCommunication::queryRemoteLink( const LinkID& link ) const { |
---|
599 | for (size_t i=0; i<linkSet.size();i++) |
---|
600 | if (linkSet[i]->remoteLink == link) return (LinkDescriptor&)*linkSet[i]; |
---|
601 | |
---|
602 | return LinkDescriptor::UNSPECIFIED(); |
---|
603 | } |
---|
604 | |
---|
605 | LinkIDs BaseCommunication::getLocalLinks( const address_v* addr ) const { |
---|
606 | LinkIDs ids; |
---|
607 | for (size_t i=0; i<linkSet.size(); i++){ |
---|
608 | if( addr == NULL ){ |
---|
609 | ids.push_back( linkSet[i]->localLink ); |
---|
610 | } else { |
---|
611 | if ( *linkSet[i]->remoteLocator == *addr ) |
---|
612 | ids.push_back( linkSet[i]->localLink ); |
---|
613 | } |
---|
614 | } |
---|
615 | return ids; |
---|
616 | } |
---|
617 | |
---|
618 | void BaseCommunication::onNetworkChange(const NetworkChangeInterface::NetworkChangeInfo& info){ |
---|
619 | |
---|
620 | #ifdef UNDERLAY_OMNET |
---|
621 | |
---|
622 | // we have no mobility support for simulations |
---|
623 | return |
---|
624 | |
---|
625 | #endif // UNDERLAY_OMNET |
---|
626 | |
---|
627 | /*- disabled! |
---|
628 | |
---|
629 | // we only care about address changes, not about interface changes |
---|
630 | // as address changes are triggered by interface changes, we are safe here |
---|
631 | if( info.type != NetworkChangeInterface::EventTypeAddressNew && |
---|
632 | info.type != NetworkChangeInterface::EventTypeAddressDelete ) return; |
---|
633 | |
---|
634 | logging_info( "base communication is handling network address changes" ); |
---|
635 | |
---|
636 | // get all now available addresses |
---|
637 | NetworkInformation networkInformation; |
---|
638 | AddressInformation addressInformation; |
---|
639 | |
---|
640 | NetworkInterfaceList interfaces = networkInformation.getInterfaces(); |
---|
641 | AddressList addresses; |
---|
642 | |
---|
643 | for( NetworkInterfaceList::iterator i = interfaces.begin(); i != interfaces.end(); i++ ){ |
---|
644 | AddressList newaddr = addressInformation.getAddresses(*i); |
---|
645 | addresses.insert( addresses.end(), newaddr.begin(), newaddr.end() ); |
---|
646 | } |
---|
647 | |
---|
648 | // |
---|
649 | // get current locators for the local endpoint |
---|
650 | // TODO: this code is dublicate of the ctor code!!! cleanup! |
---|
651 | // |
---|
652 | |
---|
653 | NetworkProtocol::NetworkLocatorSet locators = network->getAddresses(); |
---|
654 | NetworkProtocol::NetworkLocatorSet::iterator i = locators.begin(); |
---|
655 | NetworkProtocol::NetworkLocatorSet::iterator iend = locators.end(); |
---|
656 | |
---|
657 | // |
---|
658 | // remember the old local endpoint, in case it changes |
---|
659 | // |
---|
660 | |
---|
661 | EndpointDescriptor oldLocalDescriptor( localDescriptor ); |
---|
662 | |
---|
663 | // |
---|
664 | // look for local locators that we can use in communication |
---|
665 | // |
---|
666 | // choose the first locator that is not localhost |
---|
667 | // |
---|
668 | |
---|
669 | bool foundLocator = false; |
---|
670 | bool changedLocator = false; |
---|
671 | |
---|
672 | for( ; i != iend; i++){ |
---|
673 | logging_debug( "local locator found " << (*i)->toString() ); |
---|
674 | IPv4Locator* ipv4locator = dynamic_cast<IPv4Locator*>(*i); |
---|
675 | |
---|
676 | if( *ipv4locator != IPv4Locator::LOCALHOST && |
---|
677 | *ipv4locator != IPv4Locator::ANY && |
---|
678 | *ipv4locator != IPv4Locator::BROADCAST ){ |
---|
679 | |
---|
680 | ipv4locator->setPort( listenport ); |
---|
681 | changedLocator = *localDescriptor.locator != *ipv4locator; |
---|
682 | localDescriptor.locator = ipv4locator; |
---|
683 | logging_info( "binding to addr = " << ipv4locator->toString() ); |
---|
684 | foundLocator = true; |
---|
685 | break; |
---|
686 | } |
---|
687 | } // for( ; i != iend; i++) |
---|
688 | |
---|
689 | // |
---|
690 | // if we found no locator, bind to localhost |
---|
691 | // |
---|
692 | |
---|
693 | if( !foundLocator ){ |
---|
694 | changedLocator = *localDescriptor.locator != IPv4Locator::LOCALHOST; |
---|
695 | localDescriptor.locator = new IPv4Locator( IPv4Locator::LOCALHOST ); |
---|
696 | ((IPv4Locator*)(localDescriptor.locator))->setPort( listenport ); |
---|
697 | logging_info( "found no good local lcoator, binding to addr = " << |
---|
698 | localDescriptor.locator->toString() ); |
---|
699 | } |
---|
700 | |
---|
701 | // |
---|
702 | // if we have connections that have no more longer endpoints |
---|
703 | // close these. they will be automatically built up again. |
---|
704 | // also update the local locator in the linkset mapping |
---|
705 | // |
---|
706 | |
---|
707 | if( changedLocator ){ |
---|
708 | |
---|
709 | logging_debug( "local endp locator has changed to " << localDescriptor.toString() << |
---|
710 | ", resettings connections that end at old locator " << |
---|
711 | oldLocalDescriptor.toString()); |
---|
712 | |
---|
713 | LinkSet::iterator i = linkSet.begin(); |
---|
714 | LinkSet::iterator iend = linkSet.end(); |
---|
715 | |
---|
716 | for( ; i != iend; i++ ){ |
---|
717 | |
---|
718 | logging_debug( "checking connection for locator change: " << |
---|
719 | " local " << (*i).localLocator->toString() << |
---|
720 | " old " << oldLocalDescriptor.locator->toString() ); |
---|
721 | |
---|
722 | if( *((*i).localLocator) == *(oldLocalDescriptor.locator) ){ |
---|
723 | |
---|
724 | logging_debug("terminating connection to " << (*i).remoteLocator->toString() ); |
---|
725 | transport->terminate( oldLocalDescriptor.locator, (*i).remoteLocator ); |
---|
726 | |
---|
727 | (*i).localLocator = localDescriptor.locator; |
---|
728 | } |
---|
729 | } // for( ; i != iend; i++ ) |
---|
730 | |
---|
731 | // wait 500ms to give the sockets time to shut down |
---|
732 | usleep( 500000 ); |
---|
733 | |
---|
734 | } else { |
---|
735 | |
---|
736 | logging_debug( "locator has not changed, not resetting connections" ); |
---|
737 | |
---|
738 | } |
---|
739 | |
---|
740 | // |
---|
741 | // handle the connections that have no longer any |
---|
742 | // valid locator. send update messages with the new |
---|
743 | // locator, so the remote node updates its locator/link mapping |
---|
744 | // |
---|
745 | |
---|
746 | LinkSet::iterator iAffected = linkSet.begin(); |
---|
747 | LinkSet::iterator endAffected = linkSet.end(); |
---|
748 | |
---|
749 | for( ; iAffected != endAffected; iAffected++ ){ |
---|
750 | LinkDescriptor descr = *iAffected; |
---|
751 | logging_debug( "sending out link locator update to " << descr.remoteLocator->toString() ); |
---|
752 | |
---|
753 | AribaBaseMsg updateMsg( descr.remoteLocator, |
---|
754 | AribaBaseMsg::LINK_STATE_UPDATE, |
---|
755 | descr.localLink, descr.remoteLink ); |
---|
756 | |
---|
757 | transport->sendMessage( &updateMsg ); |
---|
758 | } |
---|
759 | */ |
---|
760 | } |
---|
761 | |
---|
762 | /// sends a message to all end-points in the end-point descriptor |
---|
763 | void BaseCommunication::send(Message* legacy_message, const EndpointDescriptor& endpoint) { |
---|
764 | Data data = data_serialize(legacy_message, DEFAULT_V); |
---|
765 | |
---|
766 | //// Adapt to new message system //// |
---|
767 | // transfer data buffer ownership to the shared_buffer |
---|
768 | reboost::shared_buffer_t buf(data.getBuffer(), data.getLength() / 8); |
---|
769 | |
---|
770 | reboost::message_t message; |
---|
771 | message.push_back(buf); |
---|
772 | |
---|
773 | transport->send(endpoint.getEndpoints(), message); |
---|
774 | } |
---|
775 | |
---|
776 | /// sends a message to the remote locator inside the link descriptor |
---|
777 | void BaseCommunication::send(Message* legacy_message, const LinkDescriptor& desc) { |
---|
778 | if (desc.remoteLocator==NULL) return; |
---|
779 | |
---|
780 | Data data = data_serialize(legacy_message, DEFAULT_V); |
---|
781 | |
---|
782 | //// Adapt to new message system //// |
---|
783 | // transfer data buffer ownership to the shared_buffer |
---|
784 | reboost::shared_buffer_t buf(data.getBuffer(), data.getLength() / 8); |
---|
785 | |
---|
786 | reboost::message_t message; |
---|
787 | message.push_back(buf); |
---|
788 | |
---|
789 | desc.connection->send(message); |
---|
790 | } |
---|
791 | |
---|
792 | }} // namespace ariba, communication |
---|