[35] | 1 | #include <iostream> |
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[63] | 2 | #include <sys/types.h> |
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| 3 | #include <sys/wait.h> |
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[96] | 4 | #include <sys/socket.h> |
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| 5 | #include <netinet/in.h> |
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| 6 | #include <netdb.h> |
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[35] | 7 | #include "tinyxml.h" |
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| 8 | #include "tinystr.h" |
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[96] | 9 | #include <arpa/inet.h> |
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[97] | 10 | #include <sys/mman.h> |
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| 11 | #include <fcntl.h> |
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| 12 | #include <sys/ioctl.h> |
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| 13 | |
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[96] | 14 | //#include "socket/ServerSocket.h" |
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| 15 | //#include "socket/SocketException.h" |
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[35] | 16 | |
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| 17 | using namespace std; |
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| 18 | |
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[97] | 19 | #define CE_SERVER_PORT 30001 |
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| 20 | #define POLICY_SERVER_PORT 30003 |
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[35] | 21 | |
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| 22 | struct CE_Info { |
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| 23 | int numUtilities; |
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| 24 | int numParameters; |
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| 25 | int numObservables; |
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[97] | 26 | int policy_engine; |
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| 27 | int policy_socket; |
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| 28 | int ce_socket; |
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[35] | 29 | }; |
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| 30 | |
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| 31 | struct Utility { |
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| 32 | string name; |
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| 33 | string units; |
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| 34 | string goal; |
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| 35 | float target; |
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[80] | 36 | float value; |
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[35] | 37 | }; |
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| 38 | struct Affect { |
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| 39 | Utility * u; |
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| 40 | string relation; |
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| 41 | }; |
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| 42 | struct Parameter { |
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| 43 | string name; |
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| 44 | string units; |
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| 45 | float min; |
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| 46 | int numAffects; |
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| 47 | Affect affection_list[10]; |
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| 48 | float max; |
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| 49 | float step; |
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[80] | 50 | float value; |
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[35] | 51 | }; |
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| 52 | |
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| 53 | struct Observable { |
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| 54 | string name; |
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| 55 | Affect affection_list[10]; |
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| 56 | int numAffects; |
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[80] | 57 | float value; |
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[35] | 58 | }; |
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| 59 | |
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[97] | 60 | void DieWithError(char *errorMessage) |
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| 61 | { |
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| 62 | perror(errorMessage); |
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| 63 | exit(1); |
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| 64 | } |
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| 65 | |
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[65] | 66 | void print_current_config(Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
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[35] | 67 | int i = 0; |
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| 68 | int j = 0; |
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| 69 | |
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| 70 | for(i = 0; i < ce_info->numUtilities ; i++) { |
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| 71 | cout << "Utility: " << uList[i]->name << endl; |
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| 72 | cout << " Units: " << uList[i]->units << endl; |
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| 73 | cout << " Goal: " << uList[i]->goal << endl; |
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| 74 | cout << " Target: " << uList[i]->target << endl; |
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| 75 | } |
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| 76 | |
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| 77 | for(i = 0; i < ce_info->numParameters; i++) { |
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| 78 | cout << "Parameter: " << pList[i]->name << endl; |
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[97] | 79 | printf("Cognitive Radio:: Radio Operation Profile has been sucessfully sent.\n"); |
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[35] | 80 | cout << " Units: " << pList[i]->units << endl; |
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| 81 | cout << " Min: " << pList[i]->min << endl; |
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| 82 | cout << " Max: " << pList[i]->max << endl; |
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| 83 | cout << " Step: " << pList[i]->step << endl; |
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| 84 | for(j = 0; j < pList[i]->numAffects; j++) { |
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| 85 | cout << " Affect: " << pList[i]->affection_list[j].u->name << " -> " << pList[i]->affection_list[j].relation << endl; |
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| 86 | } |
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| 87 | } |
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[80] | 88 | |
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| 89 | for(i = 0; i < ce_info->numObservables; i++) { |
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[35] | 90 | cout << "Observable: " << oList[i]->name << endl; |
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| 91 | for(j = 0; j < oList[i]->numAffects; j++) { |
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| 92 | cout << " Affect: " << oList[i]->affection_list[j].u->name << " -> " << oList[i]->affection_list[j].relation << endl; |
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| 93 | } |
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| 94 | } |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | int parse_ce_config( TiXmlDocument * doc , Utility * u[], Parameter * p[], Observable * o[], CE_Info * ce_info) { |
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| 99 | |
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| 100 | TiXmlElement* pElem; //!current element |
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| 101 | TiXmlElement* pChild; //!current child of pElem |
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| 102 | TiXmlElement* pChild1; //!current child of pElem |
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| 103 | TiXmlElement* pSecondChild; //!current child of pElem |
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| 104 | TiXmlHandle hDoc(doc); //!handle to xml document |
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| 105 | TiXmlHandle hRoot(0); //! handle to root element |
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| 106 | |
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| 107 | int count = 0; |
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| 108 | int i = 0; |
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| 109 | int j = 0; |
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| 110 | int k = 0; |
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[86] | 111 | int match_found = 0; |
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[35] | 112 | |
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| 113 | pElem = hDoc.FirstChildElement().Element(); |
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| 114 | if(!pElem) { cout << "no valid root! quit-ing function!" << endl; return 0; } |
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| 115 | hRoot = TiXmlHandle(pElem); |
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| 116 | |
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| 117 | // Pull utility information from XML file. |
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| 118 | |
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| 119 | pElem = hRoot.FirstChild("utilities").Element(); |
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| 120 | pChild1 = hRoot.Child("utilities",count).Element(); |
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| 121 | |
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| 122 | |
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| 123 | for(pChild = pChild1->FirstChildElement("utility"); pChild; pChild = pChild->NextSiblingElement()) |
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| 124 | { |
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| 125 | u[i] = new Utility; |
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| 126 | const char *uName = pChild->Attribute("name"); |
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| 127 | if(uName) u[i]->name = uName; |
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| 128 | const char *uUnits = pChild->Attribute("units"); |
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| 129 | if(uUnits) u[i]->units = uUnits; |
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| 130 | const char *uGoal = pChild->Attribute("goal"); |
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| 131 | if(uGoal) u[i]->goal = uGoal; |
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| 132 | if(pChild->QueryFloatAttribute("target",&u[i]->target) != TIXML_SUCCESS) u[i]->target = -1; |
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| 133 | i++; |
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| 134 | } |
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| 135 | ce_info->numUtilities = i; |
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[95] | 136 | cout << "Initialize:: Parsed " << ce_info->numUtilities << " utilities." << endl; |
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[35] | 137 | |
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| 138 | // Pull observable information from XML file. |
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| 139 | i = 0; |
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| 140 | pElem = hRoot.FirstChild("observables").Element(); |
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| 141 | pChild1 = hRoot.Child("observables",count).Element(); |
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| 142 | |
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| 143 | for(pChild = pChild1->FirstChildElement("observable"); pChild; pChild = pChild->NextSiblingElement()) |
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| 144 | { |
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| 145 | |
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| 146 | const char *oName = pChild->Attribute("name"); |
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| 147 | o[i] = new Observable; |
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| 148 | |
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| 149 | if(oName) o[i]->name = oName; |
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| 150 | |
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| 151 | j = 0; |
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| 152 | for(pSecondChild = pChild->FirstChildElement("affect"); pSecondChild; pSecondChild = pSecondChild->NextSiblingElement()) |
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| 153 | { |
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| 154 | const char *oUtilName = pSecondChild->Attribute("utility"); |
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| 155 | |
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| 156 | // If a utility affects this parameter find the utility object and assign it |
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| 157 | if(oUtilName) { |
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| 158 | // Search for correct utility |
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[86] | 159 | for( k=0 ; u[k]!=NULL ; k++ ){ |
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[35] | 160 | if(u[k]->name == oUtilName) { |
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| 161 | o[i]->affection_list[j].u = u[k]; |
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[86] | 162 | // Set relationship |
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| 163 | const char *oRelate = pSecondChild->Attribute("relationship"); |
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| 164 | if(oRelate) o[i]->affection_list[j].relation = oRelate; |
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| 165 | j++; |
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| 166 | match_found = 1; |
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[35] | 167 | break; |
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| 168 | } |
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| 169 | } |
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| 170 | } |
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[86] | 171 | if(!match_found) cout << "Error: " << o[i]->name << ": " << oUtilName << " not a valid utility: Affect not added." << endl; |
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| 172 | match_found = 0; |
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[35] | 173 | } |
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| 174 | o[i]->numAffects = j; |
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| 175 | i++; |
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| 176 | } |
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| 177 | ce_info->numObservables = i; |
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[95] | 178 | cout << "Initialize:: Parsed " << ce_info->numObservables << " observables." << endl; |
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[35] | 179 | |
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| 180 | |
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| 181 | // Pull parameter information from XML file. |
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| 182 | pElem = hRoot.FirstChild("parameters").Element(); |
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| 183 | pChild1 = hRoot.Child("parameters",count).Element(); |
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| 184 | |
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| 185 | i = 0; |
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| 186 | for(pChild = pChild1->FirstChildElement("parameter"); pChild; pChild = pChild->NextSiblingElement()) |
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| 187 | { |
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| 188 | p[i] = new Parameter; |
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| 189 | |
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| 190 | const char *pName = pChild->Attribute("name"); |
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| 191 | if(pName) p[i]->name = pName; |
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| 192 | const char *pUnits = pChild->Attribute("units"); |
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| 193 | if(pUnits) p[i]->units = pUnits; |
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| 194 | |
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| 195 | if(pChild->QueryFloatAttribute("min",&p[i]->min) != TIXML_SUCCESS) p[i]->min = -1; |
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| 196 | if(pChild->QueryFloatAttribute("max",&p[i]->max) != TIXML_SUCCESS) p[i]->max = -1; |
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| 197 | if(pChild->QueryFloatAttribute("step",&p[i]->step) != TIXML_SUCCESS) p[i]->step = -1; |
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| 198 | |
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| 199 | j = 0; |
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| 200 | for(pSecondChild = pChild->FirstChildElement("affect"); pSecondChild; pSecondChild = pSecondChild->NextSiblingElement()) |
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| 201 | { |
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| 202 | const char *pUtilName = pSecondChild->Attribute("utility"); |
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| 203 | |
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| 204 | // If a utility affects this parameter find the utility object and assign it |
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| 205 | if(pUtilName) { |
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| 206 | // Search for correct utility |
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| 207 | for( k=0 ; u[k]!=NULL ; k++ ){ |
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| 208 | if(u[k]->name == pUtilName) { |
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[86] | 209 | // If match found, assign it to this index |
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[35] | 210 | p[i]->affection_list[j].u = u[k]; |
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[86] | 211 | const char *pRelate = pSecondChild->Attribute("relationship"); |
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| 212 | if(pRelate) { |
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| 213 | p[i]->affection_list[j].relation = pRelate; |
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| 214 | } else { |
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| 215 | cout << "Error: No relation found." << endl; |
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| 216 | } |
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| 217 | match_found = 1; |
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| 218 | j++; |
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[35] | 219 | break; |
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| 220 | } |
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| 221 | } |
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| 222 | } |
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[86] | 223 | if(!match_found) cout << "Error: " << p[i]->name << ": " << pUtilName << " not a valid utility: Affect not added." << endl; |
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| 224 | match_found = 0; |
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[35] | 225 | } |
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| 226 | p[i]->numAffects = j; |
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| 227 | i++; |
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| 228 | |
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| 229 | } |
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| 230 | ce_info->numParameters = i; |
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[95] | 231 | cout << "Initialize:: Parsed " << ce_info->numParameters << " parameters." << endl; |
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[35] | 232 | return 1; |
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| 233 | } |
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| 234 | |
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| 235 | |
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[63] | 236 | void error(char *msg) |
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| 237 | { |
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| 238 | perror(msg); |
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| 239 | exit(1); |
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| 240 | } |
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[35] | 241 | |
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| 242 | |
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[81] | 243 | int ReceiveMessage(int socket,char * buffer) |
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| 244 | { |
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| 245 | int i,n; |
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[97] | 246 | |
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| 247 | n = recv(socket,buffer,256,MSG_PEEK); |
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[65] | 248 | |
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[81] | 249 | for(i=0;i<256;i++){ |
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| 250 | if(strcmp(&buffer[i],"\0") == 0) break; |
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| 251 | } |
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| 252 | n = recv(socket,buffer,i+1,0); |
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| 253 | if (n < 0) |
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| 254 | error("ERROR reading from socket"); |
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| 255 | // printf("ReadMessage:%s %d\n",buffer,n); |
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| 256 | |
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| 257 | return n; |
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[65] | 258 | } |
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| 259 | |
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[81] | 260 | |
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[65] | 261 | int SendMessage(int socketfd, string message) { |
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| 262 | int n; |
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| 263 | |
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[85] | 264 | message.append("\0"); |
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[65] | 265 | // Write message back to client |
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[97] | 266 | n = send(socketfd,message.c_str(),(message.size()+1),0); |
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[90] | 267 | if (n<0) |
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| 268 | error("Error sending to client\n"); |
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| 269 | if(n == 0) |
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| 270 | printf("Client closed the socket.\n"); |
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[85] | 271 | |
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[90] | 272 | //printf("SendMessage:%s %d\n",message.c_str(),n); |
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| 273 | return n; |
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[65] | 274 | } |
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| 275 | |
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[72] | 276 | void GetEnvironment() { |
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| 277 | |
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| 278 | } |
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| 279 | |
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| 280 | void Policy_ValidateSettings() { |
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| 281 | |
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| 282 | } |
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| 283 | |
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| 284 | |
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| 285 | void LoadCEConfiguration(int socketfd,Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info){ |
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[65] | 286 | int n,i,j; |
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| 287 | char counter[55]; |
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| 288 | char var[50]; |
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[82] | 289 | //int total_bytes; |
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[72] | 290 | |
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[97] | 291 | printf("Cognitive Radio:: Sending Radio Operating Profile to Cognitive Engine.\n\n"); |
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[72] | 292 | |
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[80] | 293 | // utilities |
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[72] | 294 | // Send number of utilities |
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| 295 | sprintf(counter,"%d",ce_info->numUtilities); |
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| 296 | SendMessage(socketfd,counter); |
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[80] | 297 | // send utility |
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| 298 | for(i = 0; i < ce_info->numUtilities; i++) { |
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[72] | 299 | SendMessage(socketfd,uList[i]->name); |
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| 300 | SendMessage(socketfd,uList[i]->units); |
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| 301 | SendMessage(socketfd,uList[i]->goal); |
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| 302 | sprintf(var,"%f",uList[i]->target); |
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| 303 | SendMessage(socketfd,var); |
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| 304 | } |
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[66] | 305 | |
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[72] | 306 | // parameters |
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[80] | 307 | sprintf(counter,"%i",ce_info->numParameters); |
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[72] | 308 | SendMessage(socketfd,counter); |
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| 309 | for(i = 0; i < ce_info->numParameters; i++) { |
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| 310 | SendMessage(socketfd,pList[i]->name); |
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| 311 | SendMessage(socketfd,pList[i]->units); |
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| 312 | sprintf(var,"%f",pList[i]->min); |
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| 313 | SendMessage(socketfd,var); |
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| 314 | sprintf(var,"%f",pList[i]->max); |
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| 315 | SendMessage(socketfd,var); |
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| 316 | sprintf(var,"%f",pList[i]->step); |
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| 317 | SendMessage(socketfd,var); |
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| 318 | |
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| 319 | sprintf(counter,"%i",pList[i]->numAffects); |
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[65] | 320 | SendMessage(socketfd,counter); |
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[72] | 321 | for(j = 0; j < pList[i]->numAffects; j++) { |
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| 322 | SendMessage(socketfd,pList[i]->affection_list[j].u->name); |
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| 323 | SendMessage(socketfd,pList[i]->affection_list[j].relation); |
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[65] | 324 | } |
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[72] | 325 | } |
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[66] | 326 | |
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[80] | 327 | // observables |
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[72] | 328 | sprintf(counter,"%i",ce_info->numObservables); |
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| 329 | SendMessage(socketfd,counter); |
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| 330 | for(i = 0; i < ce_info->numObservables; i++) { |
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| 331 | SendMessage(socketfd,oList[i]->name); |
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| 332 | |
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| 333 | sprintf(counter,"%i",oList[i]->numAffects); |
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[65] | 334 | SendMessage(socketfd,counter); |
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[72] | 335 | for(j = 0; j < oList[i]->numAffects; j++) { |
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| 336 | SendMessage(socketfd,oList[i]->affection_list[j].u->name); |
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| 337 | SendMessage(socketfd,oList[i]->affection_list[j].relation); |
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[71] | 338 | } |
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[72] | 339 | } |
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[66] | 340 | |
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[72] | 341 | // Receive ACK for utils |
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[81] | 342 | char buffer[256]; |
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[66] | 343 | string message; |
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[81] | 344 | n = ReceiveMessage(socketfd, buffer); |
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[95] | 345 | //printf("%s\n", buffer); |
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[81] | 346 | //cout << message << endl; |
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[95] | 347 | //printf("ACK received.\n"); |
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[66] | 348 | |
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[72] | 349 | } |
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[66] | 350 | |
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[72] | 351 | void UpdateCEConfiguration() { |
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| 352 | |
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| 353 | } |
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| 354 | |
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| 355 | void ResetCEConfiguration(){ |
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| 356 | |
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| 357 | } |
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| 358 | |
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[87] | 359 | void UpdateCEExperience(int socketfd, int num_rows, int num_cols, |
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| 360 | float * past_exp[]) |
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| 361 | { |
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| 362 | int i, j; |
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| 363 | char counter[55]; |
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| 364 | char var[50]; |
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[72] | 365 | |
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[87] | 366 | for (i = 0; i < num_rows; i++){ |
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| 367 | for (j = 0; j< num_cols; j++){ |
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| 368 | sprintf(var,"%f",past_exp[i][j]); |
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[90] | 369 | //printf("%f, \n", past_exp[i][j]); |
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| 370 | //printf("%s, \n", var); |
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[87] | 371 | } |
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| 372 | } |
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| 373 | |
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| 374 | // send the number of rows to the ce first |
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| 375 | sprintf(counter,"%d",num_rows); |
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| 376 | SendMessage(socketfd,counter); |
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| 377 | // send the number of columns to the ce |
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| 378 | sprintf(counter,"%d",num_cols); |
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| 379 | SendMessage(socketfd,counter); |
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| 380 | // update ce with experience |
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| 381 | for (i = 0; i < num_rows; i++){ |
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| 382 | for (j = 0; j< num_cols; j++){ |
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| 383 | sprintf(var,"%f",past_exp[i][j]); |
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| 384 | SendMessage(socketfd,var); |
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| 385 | } |
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| 386 | } |
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[90] | 387 | |
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[72] | 388 | } |
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| 389 | |
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| 390 | void ResetCEExperience() { |
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| 391 | |
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| 392 | } |
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| 393 | |
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[82] | 394 | // Update operating settings |
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| 395 | // This function will interact with the hardware "drivers" |
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[87] | 396 | void UpdateRadioSettings() |
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| 397 | { |
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[72] | 398 | } |
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| 399 | |
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[97] | 400 | |
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| 401 | int RequestPolicyValidation(Parameter * pList[], CE_Info *ce_info) |
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| 402 | { |
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| 403 | char counter[55]; |
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| 404 | char var[50]; |
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| 405 | int i; |
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| 406 | string control_msg; |
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| 407 | |
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| 408 | int socketfd = ce_info->policy_socket; |
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| 409 | |
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| 410 | // Control message that validation request is coming |
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| 411 | control_msg = "val"; |
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| 412 | SendMessage(socketfd,control_msg); |
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| 413 | |
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| 414 | printf("Cognitive Radio:: Here. %i\n\n", socketfd); |
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| 415 | |
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| 416 | // Send parameter information |
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| 417 | sprintf(counter,"%i",ce_info->numParameters); |
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| 418 | SendMessage(socketfd,counter); |
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| 419 | for(i = 0; i < ce_info->numParameters; i++) { |
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| 420 | SendMessage(socketfd,pList[i]->name); |
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| 421 | SendMessage(socketfd,pList[i]->units); |
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| 422 | sprintf(var,"%f",pList[i]->min); |
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| 423 | SendMessage(socketfd,var); |
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| 424 | sprintf(var,"%f",pList[i]->max); |
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| 425 | SendMessage(socketfd,var); |
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| 426 | sprintf(var,"%f",pList[i]->step); |
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| 427 | SendMessage(socketfd,var); |
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| 428 | sprintf(var,"%f",pList[i]->value); |
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| 429 | SendMessage(socketfd,var); |
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| 430 | |
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| 431 | } |
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| 432 | return 1; |
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| 433 | |
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| 434 | } |
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| 435 | |
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| 436 | |
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[82] | 437 | int RequestCEOptimization(int sockfd, Utility *uList[], |
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[80] | 438 | Parameter *pList[], Observable *oList[], |
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| 439 | CE_Info *ce_info) |
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| 440 | { |
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[81] | 441 | char buffer[256]; |
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[80] | 442 | int i; |
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| 443 | float var; |
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[72] | 444 | |
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[95] | 445 | // Send request optimization message followed by the current environment parameters. |
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| 446 | /* |
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| 447 | SendMessage(sockfd,"request"); |
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| 448 | for (i = 0; i < ce_info->numObservables; i++){ |
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| 449 | SendMessage(sockfd,..); |
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| 450 | } |
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| 451 | */ |
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| 452 | |
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| 453 | // Receive optimized values from the Cognitive Engine |
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[80] | 454 | for (i = 0; i < ce_info->numParameters; i++){ |
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[81] | 455 | bzero(buffer,256); |
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| 456 | ReceiveMessage(sockfd,buffer); |
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| 457 | var = atof(buffer); |
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[80] | 458 | pList[i]->value = var; |
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| 459 | } |
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| 460 | |
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[82] | 461 | |
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[97] | 462 | // If policy engine is connect, validate new values |
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| 463 | if(ce_info->policy_engine == 1) { |
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| 464 | |
---|
| 465 | printf("Cognitive Radio:: Found Policy Engine!\n"); |
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| 466 | printf("Cognitive Radio:: Validating parameters with Policy Engine\n\n"); |
---|
| 467 | RequestPolicyValidation(pList,ce_info); |
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| 468 | printf("Cognitive Radio:: Done\n\n"); |
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| 469 | |
---|
| 470 | } |
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| 471 | |
---|
| 472 | |
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[81] | 473 | return 1; |
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[80] | 474 | } |
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| 475 | |
---|
| 476 | void RunSimulator(int socketfd, Utility * uList[], |
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| 477 | Parameter * pList[], Observable * oList[], |
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| 478 | CE_Info * ce_info) { |
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[85] | 479 | |
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| 480 | float **past_exp; |
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[87] | 481 | int num_rows, num_cols; |
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[80] | 482 | |
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[78] | 483 | // Set fake current environment params = current environment |
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[82] | 484 | RequestCEOptimization(socketfd, uList, pList, oList, ce_info); |
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[72] | 485 | |
---|
| 486 | // Act like we are updating the hardware tranmission settings |
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[82] | 487 | UpdateRadioSettings(); |
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[72] | 488 | |
---|
| 489 | // Send back fake utility values |
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[87] | 490 | // need to initialize |
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| 491 | //UpdateCEExperience(socketfd, num_rows, num_cols, past_exp); |
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[63] | 492 | } |
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[35] | 493 | |
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[97] | 494 | void InitializePE(int socket, CE_Info * ce_info) |
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[87] | 495 | { |
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[97] | 496 | // Policy Engine is connected |
---|
| 497 | // Set global policy engine value to 1 |
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| 498 | ce_info->policy_engine = 1; |
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| 499 | ce_info->policy_socket = socket; |
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| 500 | |
---|
| 501 | return; |
---|
| 502 | } |
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| 503 | |
---|
| 504 | void InitializeCE(int socketfd, Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) |
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| 505 | { |
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[80] | 506 | LoadCEConfiguration(socketfd, uList, pList, oList, ce_info); |
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[85] | 507 | |
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[87] | 508 | // cr experience |
---|
| 509 | float **past_exp; |
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| 510 | int num_cols; |
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| 511 | // get number of columns |
---|
| 512 | num_cols = ce_info->numUtilities + ce_info->numParameters; |
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| 513 | num_cols = num_cols + ce_info->numObservables; |
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| 514 | num_cols = num_cols + 1; // overall utility |
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[90] | 515 | int num_rows = 2; |
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[87] | 516 | past_exp = (float **)malloc(sizeof(float)*num_rows); |
---|
| 517 | int i; |
---|
| 518 | for (i=0; i<num_rows; i++){ |
---|
| 519 | past_exp[i] = (float*)malloc(sizeof(float)*num_cols); |
---|
| 520 | } |
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| 521 | // sample experience #1 |
---|
| 522 | past_exp[0][0] = 1e3f; // throughput |
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| 523 | past_exp[0][1] = 1; // spectral_efficiency |
---|
| 524 | past_exp[0][2] = -3.5; // log10_ber |
---|
| 525 | past_exp[0][3] = 1; // mod_scheme |
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[90] | 526 | past_exp[0][4] = -10; // tx_power |
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[87] | 527 | past_exp[0][5] = 10.0; // SNR |
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[90] | 528 | past_exp[0][6] = 0.762; // overall utility*/ |
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| 529 | // sample experience #2 |
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[87] | 530 | past_exp[1][0] = 1e2f; // throughput |
---|
| 531 | past_exp[1][1] = 1; // spectral_efficiency |
---|
| 532 | past_exp[1][2] = -3.5; // log10_ber |
---|
| 533 | past_exp[1][3] = 1; // mod_scheme |
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[90] | 534 | past_exp[1][4] = -14; // tx_power |
---|
| 535 | past_exp[1][5] = 3.0; // SNR |
---|
| 536 | past_exp[1][6] = 0.462; // overall utility |
---|
[72] | 537 | |
---|
[87] | 538 | // update ce with experience |
---|
[97] | 539 | printf("Cognitive Radio:: Sending Previous Experience to New Cognitive Engine.\n\n"); |
---|
[87] | 540 | UpdateCEExperience(socketfd, num_rows, num_cols, past_exp); |
---|
| 541 | |
---|
[80] | 542 | RunSimulator(socketfd, uList, pList, oList, ce_info); |
---|
[72] | 543 | } |
---|
| 544 | |
---|
[97] | 545 | int AcceptTCPConnection(int servSock) |
---|
| 546 | { |
---|
| 547 | int clntSock; /* Socket descriptor for client */ |
---|
| 548 | struct sockaddr_in echoClntAddr; |
---|
| 549 | unsigned int clntLen; |
---|
[35] | 550 | |
---|
[97] | 551 | /* Set the size of the in-out parameter */ |
---|
| 552 | clntLen = sizeof(echoClntAddr); |
---|
[35] | 553 | |
---|
[97] | 554 | /* Wait for a client to connect */ |
---|
| 555 | //if ((clntSock = accept(servSock, (struct sockaddr *) &echoClntAddr, &clntLen)) < 0) { |
---|
| 556 | if ((clntSock = accept(servSock, NULL, NULL)) < 0) { |
---|
| 557 | return -1; |
---|
| 558 | } |
---|
| 559 | |
---|
| 560 | /* clntSock is connected to a client! */ |
---|
| 561 | |
---|
| 562 | printf("Handling client %s\n", inet_ntoa(echoClntAddr.sin_addr)); |
---|
[63] | 563 | |
---|
[97] | 564 | return clntSock; |
---|
| 565 | } |
---|
[95] | 566 | |
---|
[97] | 567 | int CreateTCPServerSocket(unsigned short port) |
---|
| 568 | { |
---|
| 569 | int sock; /* socket to create */ |
---|
| 570 | struct sockaddr_in echoServAddr; /* Local address */ |
---|
| 571 | |
---|
| 572 | /* Create socket for incoming connections */ |
---|
| 573 | if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) |
---|
| 574 | DieWithError("socket() failed"); |
---|
| 575 | |
---|
| 576 | /* Construct local address structure */ |
---|
| 577 | memset(&echoServAddr, 0, sizeof(echoServAddr)); /* Zero out structure */ |
---|
| 578 | echoServAddr.sin_family = AF_INET; /* Internet address family */ |
---|
| 579 | echoServAddr.sin_addr.s_addr = htonl(INADDR_ANY); /* Any incoming interface */ |
---|
| 580 | echoServAddr.sin_port = htons(port); /* Local port */ |
---|
| 581 | |
---|
| 582 | /* Bind to the local address */ |
---|
| 583 | if (bind(sock, (struct sockaddr *) &echoServAddr, sizeof(echoServAddr)) < 0) |
---|
| 584 | DieWithError("bind() failed"); |
---|
| 585 | |
---|
| 586 | /* Mark the socket so it will listen for incoming connections */ |
---|
| 587 | if (listen(sock, 5) < 0) { |
---|
| 588 | printf("listen() failed\n"); |
---|
| 589 | return 0; |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | return sock; |
---|
| 593 | } |
---|
| 594 | |
---|
| 595 | void HandleTCPClient(int socketfd, Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) |
---|
| 596 | { |
---|
| 597 | char buffer[256]; /* Buffer for echo string */ |
---|
| 598 | |
---|
| 599 | /* Receive message from client */ |
---|
| 600 | bzero(buffer,256); |
---|
| 601 | ReceiveMessage(socketfd,buffer); |
---|
| 602 | |
---|
| 603 | printf("Cognitive Radio:: Message Received - %s.\n\n", buffer); |
---|
| 604 | |
---|
| 605 | if(strcmp(buffer,"c_register") == 0) |
---|
| 606 | InitializeCE(socketfd, uList, pList, oList, ce_info); |
---|
| 607 | |
---|
| 608 | if(strcmp(buffer,"p_register") == 0) |
---|
| 609 | InitializePE(socketfd, ce_info); |
---|
| 610 | |
---|
| 611 | if(strcmp(buffer,"optimize") == 0) |
---|
| 612 | RunSimulator(socketfd, uList, pList, oList, ce_info); |
---|
| 613 | |
---|
| 614 | //close(socketfd); /* Close client socket */ |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | int StartServers(Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
---|
| 618 | int * servSock; |
---|
| 619 | int running = 1; |
---|
| 620 | struct timeval selTimeout; |
---|
| 621 | int timeout = 10; |
---|
| 622 | int cognitive_engine = 0; |
---|
| 623 | int policy_engine = 1; |
---|
| 624 | int port, rc, on = 1; |
---|
| 625 | int new_sd; |
---|
| 626 | int desc_ready = 0; |
---|
| 627 | fd_set sockSet; |
---|
| 628 | |
---|
| 629 | servSock = (int *) malloc(2 * sizeof(int)); |
---|
| 630 | |
---|
| 631 | servSock[cognitive_engine] = CreateTCPServerSocket(CE_SERVER_PORT); |
---|
| 632 | servSock[policy_engine] = CreateTCPServerSocket(POLICY_SERVER_PORT); |
---|
| 633 | |
---|
| 634 | |
---|
| 635 | int maxDescriptor = servSock[cognitive_engine]; |
---|
| 636 | |
---|
| 637 | if(servSock[cognitive_engine] < servSock[policy_engine]) |
---|
| 638 | maxDescriptor = servSock[policy_engine]; |
---|
| 639 | |
---|
| 640 | rc = setsockopt(servSock[cognitive_engine], SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)); |
---|
| 641 | if(rc < 0) |
---|
| 642 | { |
---|
| 643 | perror("setsockopt() failed"); |
---|
| 644 | close(servSock[cognitive_engine]); |
---|
| 645 | exit(-1); |
---|
| 646 | } |
---|
| 647 | |
---|
| 648 | rc = setsockopt(servSock[policy_engine], SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)); |
---|
| 649 | if(rc < 0) |
---|
| 650 | { |
---|
| 651 | perror("setsockopt() failed"); |
---|
| 652 | close(servSock[policy_engine]); |
---|
| 653 | exit(-1); |
---|
| 654 | } |
---|
| 655 | |
---|
| 656 | rc = ioctl(servSock[cognitive_engine], FIONBIO, (char*)&on); |
---|
| 657 | if(rc < 0) |
---|
| 658 | { |
---|
| 659 | perror("ioctl() failed"); |
---|
| 660 | close(servSock[cognitive_engine]); |
---|
| 661 | exit(-1); |
---|
| 662 | } |
---|
| 663 | |
---|
| 664 | rc = ioctl(servSock[policy_engine], FIONBIO, (char*)&on); |
---|
| 665 | if(rc < 0) |
---|
| 666 | { |
---|
| 667 | perror("ioctl() failed"); |
---|
| 668 | close(servSock[policy_engine]); |
---|
| 669 | exit(-1); |
---|
| 670 | } |
---|
| 671 | |
---|
| 672 | printf("Starting server: Hit return to shutdown\n"); |
---|
| 673 | while (running) |
---|
| 674 | { |
---|
| 675 | /* Zero socket descriptor vector and set for server sockets */ |
---|
| 676 | /* This must be reset every time select() is called */ |
---|
| 677 | FD_ZERO(&sockSet); |
---|
| 678 | /* Add keyboard to descriptor vector */ |
---|
| 679 | FD_SET(STDIN_FILENO, &sockSet); |
---|
| 680 | FD_SET(servSock[cognitive_engine], &sockSet); |
---|
| 681 | FD_SET(servSock[policy_engine], &sockSet); |
---|
| 682 | |
---|
| 683 | /* Timeout specification */ |
---|
| 684 | /* This must be reset every time select() is called */ |
---|
| 685 | selTimeout.tv_sec = timeout; /* timeout (secs.) */ |
---|
| 686 | selTimeout.tv_usec = 0; /* 0 microseconds */ |
---|
| 687 | |
---|
| 688 | /* Suspend program until descriptor is ready or timeout */ |
---|
| 689 | rc = select(maxDescriptor + 1, &sockSet, NULL, NULL, &selTimeout); |
---|
| 690 | if (rc == 0) |
---|
| 691 | printf("No echo requests for %i secs...Server still alive\n", timeout); |
---|
| 692 | else |
---|
| 693 | { |
---|
| 694 | if (FD_ISSET(0, &sockSet)) /* Check keyboard */ |
---|
| 695 | { |
---|
| 696 | printf("Shutting down server\n"); |
---|
| 697 | getchar(); |
---|
| 698 | running = 0; |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | desc_ready = rc; |
---|
| 702 | |
---|
| 703 | for (port = 0; port <= maxDescriptor && desc_ready > 0; port++) { |
---|
| 704 | if (FD_ISSET(port, &sockSet)) |
---|
| 705 | { |
---|
| 706 | printf("Request on port %d: ", port); |
---|
| 707 | desc_ready -= 1; |
---|
| 708 | |
---|
| 709 | |
---|
| 710 | if( (port == servSock[cognitive_engine]) || (port == servSock[policy_engine])) { |
---|
| 711 | |
---|
| 712 | do |
---|
| 713 | { |
---|
| 714 | new_sd = AcceptTCPConnection(port); |
---|
| 715 | if(new_sd < 0) |
---|
| 716 | { |
---|
| 717 | break; |
---|
| 718 | } |
---|
| 719 | |
---|
| 720 | HandleTCPClient(new_sd, uList, pList, oList, ce_info); |
---|
| 721 | FD_SET(new_sd,&sockSet); |
---|
| 722 | if(new_sd > maxDescriptor) |
---|
| 723 | maxDescriptor = new_sd; |
---|
| 724 | printf("New incoming connection - %i\n\n",new_sd); |
---|
| 725 | } while(new_sd != -1); |
---|
| 726 | } else { |
---|
| 727 | |
---|
| 728 | printf("Request on already open descriptor.\n\n"); |
---|
| 729 | HandleTCPClient(port, uList, pList, oList, ce_info); |
---|
| 730 | |
---|
| 731 | } |
---|
| 732 | |
---|
| 733 | } |
---|
| 734 | } |
---|
| 735 | } |
---|
| 736 | } |
---|
| 737 | |
---|
| 738 | /* Close sockets */ |
---|
| 739 | for (port = 0; port < 2; port++) |
---|
| 740 | close(servSock[port]); |
---|
| 741 | |
---|
| 742 | /* Free list of sockets */ |
---|
| 743 | free(servSock); |
---|
| 744 | |
---|
[63] | 745 | return 0; |
---|
[35] | 746 | } |
---|
| 747 | |
---|
| 748 | int main(int argc, char* argv[]) { |
---|
| 749 | |
---|
| 750 | |
---|
| 751 | // CognitiveEngine CE; |
---|
| 752 | // CognitiveEngineShell Shell; |
---|
| 753 | string pFilename; |
---|
[97] | 754 | int fd; |
---|
[35] | 755 | |
---|
| 756 | Utility * uList[10]; |
---|
| 757 | Parameter * pList[10]; |
---|
| 758 | Observable * oList[10]; |
---|
[97] | 759 | struct CE_Info *ce_info; |
---|
[35] | 760 | |
---|
[97] | 761 | if((fd = open("/dev/zero", O_RDWR)) == -1) |
---|
| 762 | return 1; |
---|
| 763 | |
---|
| 764 | ce_info = (struct CE_Info *)mmap(0,sizeof(CE_Info),PROT_READ|PROT_WRITE,MAP_SHARED,fd,0); |
---|
| 765 | |
---|
| 766 | close(fd); |
---|
| 767 | |
---|
[35] | 768 | if(argc < 2) { |
---|
| 769 | cout << "Warning no XML file specific using default: example.xml" << endl; |
---|
| 770 | pFilename = "example.xml"; |
---|
| 771 | } else { |
---|
| 772 | pFilename = argv[1]; |
---|
| 773 | } |
---|
| 774 | |
---|
| 775 | TiXmlDocument doc( pFilename.c_str() ); |
---|
| 776 | bool loadOkay = doc.LoadFile(); |
---|
| 777 | if (!loadOkay) |
---|
| 778 | { |
---|
| 779 | cout << "Loading " << pFilename << " failed." << endl; |
---|
| 780 | return 0; |
---|
| 781 | } |
---|
| 782 | |
---|
[95] | 783 | cout << "\n\nInitialize:: Attemping to parse " << pFilename << "." << endl; |
---|
[97] | 784 | parse_ce_config( &doc , uList, pList, oList, ce_info); |
---|
[95] | 785 | cout << "Initialize:: Configuration file parsing completed.\n" << endl; |
---|
[35] | 786 | |
---|
[72] | 787 | //print_current_config(uList, pList, oList, &ce_info); |
---|
[69] | 788 | |
---|
[97] | 789 | StartServers(uList, pList, oList, ce_info); |
---|
[35] | 790 | return 1; |
---|
[71] | 791 | } |
---|