1 | #include <stdio.h> |
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2 | #include <sys/types.h> |
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3 | #include <sys/socket.h> |
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4 | #include <netinet/in.h> |
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5 | #include <netdb.h> |
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6 | //#include <iostream> |
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7 | #include <stdlib.h> |
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8 | #include <string.h> |
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9 | #include <sqlite3.h> |
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10 | #include <sqlite3ext.h> |
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11 | |
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12 | #include "vtcross/cbr.h" |
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13 | #include "vtcross/common.h" |
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14 | |
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15 | //using namespace std; |
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16 | |
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17 | struct CE_Info { |
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18 | int numUtilities; |
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19 | int numParameters; |
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20 | int numObservables; |
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21 | }; |
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22 | |
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23 | struct Utility { |
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24 | char name[50]; |
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25 | char units[50]; |
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26 | char goal[50]; |
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27 | /* string name; |
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28 | string units; |
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29 | string goal;*/ |
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30 | float target; |
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31 | float value; |
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32 | }; |
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33 | |
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34 | struct Affect { |
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35 | struct Utility u; |
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36 | //string relation; |
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37 | char relation[50]; |
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38 | }; |
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39 | |
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40 | struct Parameter { |
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41 | /*string name; |
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42 | string units;*/ |
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43 | char name[50]; |
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44 | char units[50]; |
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45 | float min; |
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46 | int numAffects; |
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47 | struct Affect affection_list[10]; |
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48 | float max; |
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49 | float step; |
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50 | float value; |
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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 | char name[50]; |
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56 | struct Affect affection_list[10]; |
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57 | int numAffects; |
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58 | float value; |
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59 | }; |
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60 | |
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61 | // error handling |
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62 | void error(char *msg) |
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63 | { |
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64 | perror(msg); |
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65 | exit(0); |
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66 | } |
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67 | |
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68 | void ReadMessage(int socket,char * buffer) { |
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69 | int i,n; |
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70 | |
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71 | n = recv(socket,buffer,256,MSG_PEEK); |
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72 | for(i=0;i<256;i++){ |
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73 | if(strcmp(&buffer[i],"\0") == 0) break; |
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74 | } |
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75 | n = recv(socket,buffer,i+1,0); |
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76 | if (n < 0) |
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77 | error("ERROR reading from socket"); |
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78 | //printf("ReadMessage:%s %d\n",buffer,n); |
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79 | } |
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80 | |
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81 | |
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82 | int GetUtility(int sockfd, struct Utility uList[], struct CE_Info *ce_info) |
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83 | { |
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84 | char buffer[256]; |
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85 | int i; |
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86 | |
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87 | // read unitilities |
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88 | // numUtilities |
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89 | bzero(buffer,256); |
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90 | ReadMessage(sockfd,buffer); |
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91 | ce_info->numUtilities = atoi(buffer); |
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92 | //printf("number of utilities: %d\n", ce_info->numUtilities); |
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93 | |
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94 | for (i = 0; i < ce_info->numUtilities; i++){ |
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95 | bzero(buffer,256); |
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96 | ReadMessage(sockfd,buffer); |
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97 | //printf("Name: %s\n", buffer); |
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98 | strcpy(uList[i].name, buffer); |
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99 | |
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100 | bzero(buffer,256); |
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101 | ReadMessage(sockfd,buffer); |
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102 | //printf("Units: %s\n", buffer); |
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103 | strcpy(uList[i].units, buffer); |
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104 | |
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105 | bzero(buffer,256); |
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106 | ReadMessage(sockfd,buffer); |
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107 | //printf("Goal: %s\n", buffer); |
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108 | strcpy(uList[i].goal, buffer); |
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109 | |
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110 | bzero(buffer,256); |
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111 | ReadMessage(sockfd,buffer); |
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112 | //printf("Target: %s\n", buffer); |
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113 | uList[i].target = atof(buffer); |
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114 | } |
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115 | return 1; |
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116 | } |
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117 | |
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118 | |
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119 | int GetParameter(int sockfd, struct Parameter pList[], struct CE_Info *ce_info) |
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120 | { |
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121 | char buffer[256]; |
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122 | int i, j; |
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123 | |
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124 | // numParameters |
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125 | bzero(buffer,256); |
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126 | ReadMessage(sockfd,buffer); |
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127 | ce_info->numParameters = atoi(buffer); |
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128 | //printf("number of parameters: %d\n", ce_info->numParameters); |
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129 | |
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130 | for (i = 0; i < ce_info->numParameters; i++){ |
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131 | bzero(buffer,256); |
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132 | ReadMessage(sockfd,buffer); |
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133 | //printf("Name: %s\n", buffer); |
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134 | strcpy(pList[i].name, buffer); |
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135 | |
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136 | bzero(buffer,256); |
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137 | ReadMessage(sockfd,buffer); |
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138 | //printf("Units: %s\n", buffer); |
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139 | strcpy(pList[i].units, buffer); |
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140 | |
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141 | bzero(buffer,256); |
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142 | ReadMessage(sockfd,buffer); |
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143 | //printf("Min: %s\n", buffer); |
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144 | pList[i].min = atof(buffer); |
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145 | |
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146 | bzero(buffer,256); |
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147 | ReadMessage(sockfd,buffer); |
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148 | //printf("Max: %s\n", buffer); |
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149 | pList[i].max = atof(buffer); |
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150 | |
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151 | bzero(buffer,256); |
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152 | ReadMessage(sockfd,buffer); |
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153 | //printf("Step: %s\n", buffer); |
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154 | pList[i].step = atof(buffer); |
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155 | |
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156 | // numAffects |
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157 | bzero(buffer,256); |
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158 | ReadMessage(sockfd,buffer); |
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159 | pList[i].numAffects = atoi(buffer); |
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160 | //printf("number of affects: %d\n", pList[i].numAffects); |
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161 | |
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162 | for (j = 0; j < pList[i].numAffects; j++){ |
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163 | bzero(buffer,256); |
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164 | ReadMessage(sockfd,buffer); |
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165 | //printf("Utility name: %s\n", buffer); |
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166 | strcpy(pList[i].affection_list[j].u.name, buffer); |
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167 | |
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168 | bzero(buffer,256); |
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169 | ReadMessage(sockfd,buffer); |
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170 | //printf("Relation: %s\n", buffer); |
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171 | strcpy(pList[i].affection_list[j].relation, buffer); |
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172 | } |
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173 | } |
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174 | return 1; |
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175 | } |
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176 | |
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177 | |
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178 | int GetObservable(int sockfd, struct Observable oList[], struct CE_Info *ce_info) |
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179 | { |
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180 | char buffer[256]; |
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181 | int i,j; |
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182 | |
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183 | // numParameters |
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184 | bzero(buffer,256); |
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185 | ReadMessage(sockfd,buffer); |
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186 | ce_info->numObservables = atoi(buffer); |
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187 | //printf("number of observables: %d\n", ce_info->numObservables); |
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188 | |
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189 | for (i = 0; i < ce_info->numObservables; i++){ |
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190 | bzero(buffer,256); |
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191 | ReadMessage(sockfd,buffer); |
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192 | //printf("Name: %s\n", buffer); |
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193 | strcpy(oList[i].name, buffer); |
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194 | |
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195 | // numAffects |
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196 | bzero(buffer,256); |
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197 | ReadMessage(sockfd,buffer); |
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198 | oList[i].numAffects = atoi(buffer); |
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199 | //printf("number of affects: %d\n", oList[i].numAffects); |
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200 | |
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201 | for (j = 0; j < oList[i].numAffects; j++){ |
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202 | bzero(buffer,256); |
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203 | ReadMessage(sockfd,buffer); |
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204 | //printf("Utility name: %s\n", buffer); |
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205 | strcpy(oList[i].affection_list[j].u.name, buffer); |
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206 | |
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207 | bzero(buffer,256); |
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208 | ReadMessage(sockfd,buffer); |
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209 | //printf("Relation: %s\n", buffer); |
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210 | strcpy(oList[i].affection_list[j].relation, buffer); |
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211 | } |
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212 | } |
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213 | return 1; |
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214 | } |
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215 | |
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216 | |
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217 | // setup client socket connection |
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218 | int ClientSocket(int argc, char** argv) |
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219 | { |
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220 | int sockfd; |
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221 | int portno; |
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222 | struct sockaddr_in serv_addr; |
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223 | struct hostent *server; |
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224 | |
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225 | // setup client socket connection |
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226 | if (argc < 3) { |
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227 | fprintf(stderr,"usage: %s hostname port\n", argv[0]); |
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228 | exit(0); |
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229 | } |
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230 | // server name |
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231 | server = gethostbyname(argv[1]); |
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232 | if (server == NULL) { |
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233 | fprintf(stderr,"ERROR, no such host\n"); |
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234 | exit(0); |
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235 | } |
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236 | // port no. |
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237 | portno = atoi(argv[2]); |
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238 | // socket file descriptor |
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239 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
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240 | if (sockfd < 0) |
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241 | error("ERROR opening socket"); |
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242 | // initiate struct socketaddr_in |
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243 | bzero((char *) &serv_addr, sizeof(serv_addr)); |
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244 | serv_addr.sin_family = AF_INET; |
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245 | serv_addr.sin_port = htons(portno); |
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246 | bcopy((char *)server->h_addr, |
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247 | (char *)&serv_addr.sin_addr.s_addr, |
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248 | server->h_length); |
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249 | // cast sockaddr_in to sockaddr |
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250 | if (connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0) |
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251 | error("ERROR connecting"); |
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252 | |
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253 | return sockfd; |
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254 | } |
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255 | |
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256 | |
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257 | int SendMessage(int socketfd, char *message) |
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258 | { |
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259 | int n; |
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260 | |
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261 | strcat(message, "\0000"); |
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262 | // Write message back to client |
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263 | //n = write(socketfd,message,(strlen(message)+1)); |
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264 | n = send(socketfd,message,(strlen(message)+1),0); |
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265 | if (n<0) |
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266 | error("Error sending to server\n"); |
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267 | else if(n == 0) |
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268 | printf("Server closed the socket.\n"); |
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269 | |
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270 | return n; |
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271 | } |
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272 | |
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273 | |
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274 | int GetXMLFromServer(int sockfd, struct Utility uList[], struct Parameter pList[], |
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275 | struct Observable oList[], struct CE_Info *ce_info) |
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276 | { |
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277 | // get utilities |
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278 | GetUtility(sockfd, uList, ce_info); |
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279 | |
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280 | // get parameters |
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281 | GetParameter(sockfd, pList, ce_info); |
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282 | |
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283 | // read obervables |
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284 | GetObservable(sockfd, oList, ce_info); |
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285 | |
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286 | // send ack back to server |
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287 | char buffer[256]; |
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288 | strcpy(buffer, "xml received"); |
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289 | SendMessage(sockfd, buffer); |
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290 | //printf("xml reception done\n"); |
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291 | |
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292 | return 1; |
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293 | } |
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294 | |
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295 | |
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296 | int GetExperienceSize(int sockfd, int *num_rows, int *num_cols) |
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297 | { |
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298 | char buffer[256]; |
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299 | |
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300 | // number of rows |
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301 | bzero(buffer,256); |
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302 | ReadMessage(sockfd,buffer); |
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303 | *num_rows = atoi(buffer); |
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304 | // number of columns |
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305 | bzero(buffer,256); |
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306 | ReadMessage(sockfd,buffer); |
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307 | *num_cols = atoi(buffer); |
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308 | return 1; |
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309 | } |
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310 | |
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311 | int GetRequest(int sockfd) |
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312 | { |
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313 | char buffer[256]; |
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314 | |
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315 | bzero(buffer,256); |
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316 | ReadMessage(sockfd,buffer); |
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317 | |
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318 | return 1; |
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319 | } |
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320 | |
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321 | int GetExperience(int sockfd, int num_rows, int num_cols, |
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322 | //float **past_exp) |
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323 | float past_exp[num_rows][num_cols]) |
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324 | { |
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325 | char buffer[256]; |
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326 | int i, j; |
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327 | |
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328 | // read experience |
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329 | for (i = 0; i < num_rows; i++){ |
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330 | for (j = 0; j < num_cols; j++){ |
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331 | bzero(buffer,256); |
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332 | ReadMessage(sockfd,buffer); |
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333 | // printf("experience: %s\n", buffer); |
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334 | past_exp[i][j] = atof(buffer); |
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335 | } |
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336 | } |
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337 | |
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338 | return 1; |
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339 | } |
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340 | |
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341 | |
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342 | void print_current_config(struct Utility uList[], |
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343 | struct Parameter pList[], |
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344 | struct Observable oList[], |
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345 | struct CE_Info * ce_info) |
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346 | { |
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347 | int i = 0; |
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348 | int j = 0; |
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349 | |
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350 | // utilities |
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351 | for(i = 0; i < ce_info->numUtilities ; i++) { |
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352 | printf("Utility: %s\n", uList[i].name); |
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353 | printf(" Units: %s\n", uList[i].units); |
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354 | printf(" Goal: %s\n", uList[i].goal); |
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355 | printf(" Target: %f\n", uList[i].target); |
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356 | /*cout << "Utility: " << uList[i].name << endl; |
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357 | cout << " Units: " << uList[i].units << endl; |
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358 | cout << " Goal: " << uList[i].goal << endl; |
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359 | cout << " Target: " << uList[i].target << endl;*/ |
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360 | } |
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361 | |
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362 | // parameters |
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363 | for(i = 0; i < ce_info->numParameters; i++) { |
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364 | printf("Paramter: %s\n", pList[i].name); |
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365 | printf(" Units: %s\n", pList[i].units); |
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366 | printf(" Min: %f\n", pList[i].min); |
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367 | printf(" Max: %f\n", pList[i].max); |
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368 | printf(" Step: %f\n", pList[i].step); |
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369 | /*cout << "Parameter: " << pList[i].name << endl; |
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370 | cout << " Units: " << pList[i].units << endl; |
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371 | cout << " Min: " << pList[i].min << endl; |
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372 | cout << " Max: " << pList[i].max << endl; |
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373 | cout << " Step: " << pList[i].step << endl;*/ |
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374 | for(j = 0; j < pList[i].numAffects; j++) { |
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375 | printf(" Affect: %s -> %s\n", pList[i].affection_list[j].u.name, pList[i].affection_list[j].relation); |
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376 | //cout << " Affect: " << pList[i].affection_list[j].u.name << " -> " << pList[i].affection_list[j].relation << endl; |
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377 | } |
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378 | } |
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379 | |
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380 | // observables |
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381 | for(i = 0; i < ce_info->numObservables; i++) { |
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382 | printf("Observable: %s\n", oList[i].name); |
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383 | //cout << "Observable: " << oList[i].name << endl; |
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384 | for(j = 0; j < oList[i].numAffects; j++) { |
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385 | printf(" Affect: %s -> %s\n", oList[i].affection_list[j].u.name, oList[i].affection_list[j].relation); |
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386 | //cout << " Affect: " << oList[i].affection_list[j].u.name << " -> " << oList[i].affection_list[j].relation << endl; |
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387 | } |
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388 | } |
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389 | } |
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390 | |
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391 | int RunCBREngine(struct Utility uList[], struct Parameter pList[], |
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392 | struct Observable oList[], struct CE_Info *ce_info, |
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393 | //int num_cols, int num_rows, float ** past_exp) |
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394 | int num_cols, int num_rows, float past_exp[num_rows][num_cols]) |
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395 | { |
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396 | |
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397 | int i, j; |
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398 | |
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399 | // get column names |
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400 | /*char *cols[50] = {"throughput", "spectral_efficiency", |
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401 | "log10_ber", "mod_scheme", "tx_power", "SNR", "utility"};*/ |
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402 | //char cols[num_cols][50]; |
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403 | |
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404 | |
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405 | char **cols; |
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406 | cols = (char **)malloc(sizeof(char)*num_cols); |
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407 | j = 0; |
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408 | for (i = 0; i < ce_info->numUtilities; i++){ |
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409 | cols[j] = malloc(strlen(uList[i].name)+1); |
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410 | cols[j] = uList[i].name; |
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411 | // strcpy(cols[j], uList[i].name); |
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412 | j++; |
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413 | } |
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414 | for (i = 0; i < ce_info->numParameters; i++){ |
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415 | cols[j] = malloc(strlen(pList[i].name)+1); |
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416 | cols[j] = pList[i].name; |
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417 | // strcpy(cols[j], pList[i].name); |
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418 | j++; |
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419 | } |
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420 | for (i = 0; i < ce_info->numObservables; i++){ |
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421 | cols[j] = malloc(strlen(oList[i].name)+1); |
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422 | cols[j] = oList[i].name; |
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423 | // strcpy(cols[j], oList[i].name); |
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424 | j++; |
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425 | } |
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426 | cols[j] = malloc(strlen("utility")+1); |
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427 | cols[j] = "utility"; |
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428 | |
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429 | //printf("column names:"); |
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430 | //for (i = 0; i<num_cols; i++){ |
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431 | // printf(" %s",cols[i]); |
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432 | //} |
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433 | //printf("\n"); |
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434 | |
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435 | int rc; |
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436 | |
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437 | // create cbr database/table |
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438 | //printf("create cbr database\n"); |
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439 | char filename[] = {"ex1"}, tablename[] = {"data"}; |
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440 | cbr mycbr = cbr_create(filename, tablename, cols, num_cols); |
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441 | //cbr mycbr = cbr_create("ex1", "data", cols, num_cols); |
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442 | |
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443 | // add row here |
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444 | float vals[num_cols]; |
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445 | /*// sample table entry |
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446 | vals[0] = 1e3f; // throughput |
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447 | vals[1] = 1; // spectral_efficiency |
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448 | vals[2] = -3.50; // log10_ber |
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449 | vals[3] = 1; // mod_scheme |
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450 | vals[4] = -3.5f; // tx_power |
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451 | vals[5] = 10.0f; // SNR |
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452 | vals[6] = 0.762; // utility*/ |
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453 | for (i = 0; i < num_rows; i++){ |
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454 | for (j = 0; j < num_cols; j++){ |
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455 | vals[j] = past_exp[i][j]; |
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456 | } |
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457 | rc = cbr_add_row(mycbr, cols, vals, num_cols); |
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458 | } |
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459 | |
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460 | // print |
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461 | printf("cbr table\n"); |
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462 | cbr_print(mycbr); |
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463 | |
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464 | // simple search: find entry where... |
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465 | // log10_ber < 1e-2 and SNR > 5 |
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466 | //char * search_names[] = {"log10_ber", "SNR"}; |
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467 | char ** search_names; |
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468 | search_names |
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469 | = (char **)malloc(sizeof(char)*(ce_info->numUtilities)); |
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470 | for (i = 0; i < ce_info->numUtilities; i++){ |
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471 | search_names[i] |
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472 | = malloc(sizeof(char)*(strlen(uList[i].name)+1)); |
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473 | search_names[i] = uList[i].name; |
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474 | } |
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475 | int search_ops[] = {GT, GT, LT}; |
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476 | //float search_vals[] = {1e-2f, 5.f}; |
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477 | float *search_vals; |
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478 | search_vals = malloc(sizeof(float)*(ce_info->numUtilities)); |
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479 | for (i = 0; i < ce_info->numUtilities; i++){ |
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480 | search_vals[i] = uList[i].target; |
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481 | } |
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482 | float retvals[num_cols]; |
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483 | rc = cbr_search(mycbr, search_names, search_ops, |
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484 | search_vals, ce_info->numUtilities, retvals); |
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485 | |
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486 | j = 0; |
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487 | for (i = 0; i < ce_info->numUtilities; i++){ |
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488 | uList[i].value = retvals[j]; |
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489 | j++; |
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490 | } |
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491 | for (i = 0; i < ce_info->numParameters; i++){ |
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492 | pList[i].value = retvals[j]; |
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493 | j++; |
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494 | } |
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495 | for (i = 0; i < ce_info->numObservables; i++){ |
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496 | oList[i].value = retvals[j]; |
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497 | j++; |
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498 | } |
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499 | |
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500 | // clean up database |
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501 | //printf("clean cbr database\n"); |
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502 | cbr_free(mycbr); |
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503 | |
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504 | return 1; |
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505 | } |
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506 | |
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507 | |
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508 | int SendCEResults(int sockfd, struct Utility uList[], struct Parameter pList[], |
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509 | struct Observable oList[], struct CE_Info *ce_info) |
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510 | { |
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511 | // send results back to server |
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512 | char var[50]; |
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513 | int i; |
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514 | |
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515 | /*// utility |
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516 | for (i = 0; i < ce_info->numUtilities; i++){ |
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517 | sprintf(var, "%f", uList[i].value); |
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518 | SendMessage(sockfd, var); |
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519 | }*/ |
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520 | |
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521 | // parameter |
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522 | for (i = 0; i < ce_info->numParameters; i++){ |
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523 | sprintf(var, "%f", pList[i].value); |
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524 | SendMessage(sockfd, var); |
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525 | } |
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526 | |
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527 | /*// observable |
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528 | for (i = 0; i < ce_info->numObservables; i++){ |
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529 | sprintf(var, "%f", oList[i].value); |
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530 | SendMessage(sockfd, var); |
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531 | }*/ |
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532 | |
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533 | return 1; |
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534 | } |
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535 | |
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536 | int RegisterCE(int sockfd, struct Utility uList[], struct Parameter pList[], |
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537 | struct Observable oList[], struct CE_Info *ce_info) |
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538 | { |
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539 | // Send register message to cognitive radio |
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540 | SendMessage(sockfd, "register_engine_cognitive"); |
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541 | return 1; |
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542 | } |
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543 | |
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544 | // main client socket |
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545 | int main(int argc, char *argv[]) |
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546 | { |
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547 | struct Utility uList[10]; |
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548 | struct Parameter pList[10]; |
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549 | struct Observable oList[10]; |
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550 | struct CE_Info ce_info; |
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551 | char buffer[256]; |
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552 | |
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553 | // setup client socket connection |
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554 | int sockfd; |
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555 | sockfd = ClientSocket(argc, argv); |
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556 | |
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557 | RegisterCE(sockfd,uList,pList,oList,&ce_info); |
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558 | // get xml info from server |
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559 | GetXMLFromServer(sockfd, uList, pList, oList, &ce_info); |
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560 | printf("Received Radio Operation Profile from Server Successfully.\n\n"); |
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561 | //print_current_config(uList, pList, oList, &ce_info); |
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562 | |
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563 | // get experience size from server |
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564 | int num_rows, num_cols; |
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565 | GetExperienceSize(sockfd, &num_rows, &num_cols); |
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566 | |
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567 | // get experience |
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568 | int i, j; |
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569 | float past_exp[num_rows][num_cols]; |
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570 | GetExperience(sockfd, num_rows, num_cols, past_exp); |
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571 | printf("Received Previous Radio Experience from Server Successfully.\n\n"); |
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572 | // cbr operation |
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573 | //unsigned int num_cols; |
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574 | // get number of columns |
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575 | num_cols = ce_info.numUtilities + ce_info.numParameters; |
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576 | num_cols = num_cols + ce_info.numObservables; |
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577 | num_cols = num_cols + 1; // overall utility |
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578 | //while(1) { |
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579 | |
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580 | // Wait until request is received from server to perform optimization |
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581 | //printf("Waiting for Request for optimization from Server\n\n"); |
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582 | //GetRequest(sockfd); |
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583 | //printf("Received optimization request from server\n\n"); |
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584 | RunCBREngine(uList, pList, oList, &ce_info, num_cols, num_rows, past_exp); |
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585 | |
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586 | printf("Sending optimization results to server.\n\n"); |
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587 | // send results back to server |
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588 | SendCEResults(sockfd, uList, pList, oList, &ce_info); |
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589 | |
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590 | //} |
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591 | |
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592 | return 0; |
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593 | } |
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