| 214 | // setup client socket connection |
| 215 | int ClientSocket(int argc, char** argv) |
| 216 | { |
| 217 | int sockfd; |
| 218 | int portno; |
| 219 | struct sockaddr_in serv_addr; |
| 220 | struct hostent *server; |
| 221 | |
| 222 | // setup client socket connection |
| 223 | if (argc < 3) { |
| 224 | fprintf(stderr,"usage: %s hostname port\n", argv[0]); |
| 225 | exit(0); |
| 226 | } |
| 227 | // server name |
| 228 | server = gethostbyname(argv[1]); |
| 229 | if (server == NULL) { |
| 230 | fprintf(stderr,"ERROR, no such host\n"); |
| 231 | exit(0); |
| 232 | } |
| 233 | // port no. |
| 234 | portno = atoi(argv[2]); |
| 235 | // socket file descriptor |
| 236 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
| 237 | if (sockfd < 0) |
| 238 | error("ERROR opening socket"); |
| 239 | // initiate struct socketaddr_in |
| 240 | bzero((char *) &serv_addr, sizeof(serv_addr)); |
| 241 | serv_addr.sin_family = AF_INET; |
| 242 | serv_addr.sin_port = htons(portno); |
| 243 | bcopy((char *)server->h_addr, |
| 244 | (char *)&serv_addr.sin_addr.s_addr, |
| 245 | server->h_length); |
| 246 | // cast sockaddr_in to sockaddr |
| 247 | if (connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0) |
| 248 | error("ERROR connecting"); |
| 249 | |
| 250 | return sockfd; |
| 251 | } |
| 252 | |
| 253 | |
228 | | void print_current_config(struct Utility uList[], struct Parameter pList[], |
229 | | struct Observable oList[], struct CE_Info * ce_info) |
| 271 | |
| 272 | int SendMessage(int socketfd, char *message) |
| 273 | { |
| 274 | int n; |
| 275 | |
| 276 | strcat(message, "\0000"); |
| 277 | // Write message back to client |
| 278 | //n = write(socketfd,message,(strlen(message)+1)); |
| 279 | n = send(socketfd,message,(strlen(message)+1),0); |
| 280 | if (n<0) |
| 281 | error("Error sending to server\n"); |
| 282 | else if(n == 0) |
| 283 | printf("Server closed the socket.\n"); |
| 284 | |
| 285 | return n; |
| 286 | } |
| 287 | |
| 288 | |
| 289 | void print_current_config(struct Utility uList[], |
| 290 | struct Parameter pList[], |
| 291 | struct Observable oList[], |
| 292 | struct CE_Info * ce_info) |
275 | | |
276 | | // main client socket |
277 | | int main(int argc, char *argv[]) |
278 | | { |
279 | | struct Utility uList[10]; |
280 | | struct Parameter pList[10]; |
281 | | struct Observable oList[10]; |
282 | | struct CE_Info ce_info; |
283 | | |
284 | | int sockfd, portno; |
285 | | struct sockaddr_in serv_addr; |
286 | | struct hostent *server; |
287 | | |
288 | | // setup client socket connection |
289 | | if (argc < 3) { |
290 | | fprintf(stderr,"usage: %s hostname port\n", argv[0]); |
291 | | exit(0); |
292 | | } |
293 | | // server name |
294 | | server = gethostbyname(argv[1]); |
295 | | if (server == NULL) { |
296 | | fprintf(stderr,"ERROR, no such host\n"); |
297 | | exit(0); |
298 | | } |
299 | | // port no. |
300 | | portno = atoi(argv[2]); |
301 | | // socket file descriptor |
302 | | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
303 | | if (sockfd < 0) |
304 | | error("ERROR opening socket"); |
305 | | // initiate struct socketaddr_in |
306 | | bzero((char *) &serv_addr, sizeof(serv_addr)); |
307 | | serv_addr.sin_family = AF_INET; |
308 | | serv_addr.sin_port = htons(portno); |
309 | | bcopy((char *)server->h_addr, |
310 | | (char *)&serv_addr.sin_addr.s_addr, |
311 | | server->h_length); |
312 | | // cast sockaddr_in to sockaddr |
313 | | if (connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0) |
314 | | error("ERROR connecting"); |
315 | | |
316 | | // get xml info from server |
317 | | GetXMLFromServer(sockfd, uList, pList, oList, &ce_info); |
318 | | |
319 | | //printf("utility:\n name: %s, units: %s, goal: %s, target: %f\n", |
320 | | // uList[0].name, uList[0].units, uList[0].goal, uList[0].target); |
321 | | |
322 | | print_current_config(uList, pList, oList, &ce_info); |
323 | | |
324 | | // cbr operation |
| 338 | int RunCBREngine(struct Utility uList[], struct Parameter pList[], |
| 339 | struct Observable oList[], struct CE_Info *ce_info, |
| 340 | int num_cols) |
| 341 | { |
| 342 | |
326 | | unsigned int num_cols; |
327 | | |
328 | | num_cols = ce_info.numUtilities + ce_info.numParameters; |
329 | | num_cols = num_cols + ce_info.numObservables; |
330 | | num_cols = num_cols + 1; |
331 | | |
332 | | char *cols[] = {"throughput", "spectral_efficiency", |
333 | | "log10_ber", "mod_scheme", "tx_power", "SNR", "utility"}; |
334 | | |
| 344 | |
| 345 | // get column names |
| 346 | //char *cols[50]; |
| 347 | char **cols; |
| 348 | cols = (char **)malloc(sizeof(char)*num_cols); |
| 349 | int j = 0; |
| 350 | for (i = 0; i < ce_info->numUtilities; i++){ |
| 351 | cols[j] = malloc(strlen(uList[i].name)+1); |
| 352 | cols[j] = uList[i].name; |
| 353 | j++; |
| 354 | } |
| 355 | for (i = 0; i < ce_info->numParameters; i++){ |
| 356 | cols[j] = malloc(strlen(pList[i].name)+1); |
| 357 | cols[j] = pList[i].name; |
| 358 | j++; |
| 359 | } |
| 360 | for (i = 0; i < ce_info->numObservables; i++){ |
| 361 | cols[j] = malloc(strlen(oList[i].name)+1); |
| 362 | cols[j] = oList[i].name; |
| 363 | j++; |
| 364 | } |
| 365 | cols[j] = malloc(strlen("utility")+1); |
| 366 | cols[j] = "utility"; |
| 367 | |
| 368 | // sample table entry |
344 | | /*num_cols = 6; |
345 | | char * cols[] = { |
346 | | "BER", "throughput", |
347 | | "mod_scheme", "tx_power", |
348 | | "noise_power", "path_loss" |
349 | | }; |
350 | | |
351 | | float vals[num_cols]; |
352 | | vals[0] = 1e-3f; // BER |
353 | | vals[1] = 10e3f; // throughput |
354 | | vals[2] = 1; // mod_scheme |
355 | | vals[3] = -3.0f; // tx_power |
356 | | vals[4] = -50.0f; // noise_power |
357 | | vals[5] = 125.0f; // path_loss |
358 | | //vals[6] = 0.762; // utility*/ |
359 | | |
382 | | |
383 | | /*// simple search: find entry where... |
384 | | // BER < 1e-2 and path_loss > 100 |
385 | | char * search_names[] = {"BER", "path_loss"}; |
386 | | int search_ops[] = {LT, GT}; |
387 | | float search_vals[] = {1e-2f, 100.f}; |
388 | | float retvals[num_cols]; |
389 | | printf("search cbr\n"); |
390 | | rc = cbr_search(mycbr, search_names, search_ops, search_vals, 2,retvals);*/ |
401 | | // print returned values |
| 410 | j = 0; |
| 411 | for (i = 0; i < ce_info->numUtilities; i++){ |
| 412 | uList[i].value = retvals[j]; |
| 413 | j++; |
| 414 | } |
| 415 | for (i = 0; i < ce_info->numParameters; i++){ |
| 416 | pList[i].value = retvals[j]; |
| 417 | j++; |
| 418 | } |
| 419 | for (i = 0; i < ce_info->numObservables; i++){ |
| 420 | oList[i].value = retvals[j]; |
| 421 | j++; |
| 422 | } |
| 423 | |
| 424 | // clean up database |
| 425 | //printf("clean cbr database\n"); |
| 426 | cbr_free(mycbr); |
| 427 | |
| 428 | return 1; |
| 429 | } |
| 430 | |
| 431 | // main client socket |
| 432 | int main(int argc, char *argv[]) |
| 433 | { |
| 434 | struct Utility uList[10]; |
| 435 | struct Parameter pList[10]; |
| 436 | struct Observable oList[10]; |
| 437 | struct CE_Info ce_info; |
| 438 | |
| 439 | // setup client socket connection |
| 440 | int sockfd; |
| 441 | sockfd = ClientSocket(argc, argv); |
| 442 | |
| 443 | // get xml info from server |
| 444 | GetXMLFromServer(sockfd, uList, pList, oList, &ce_info); |
| 445 | print_current_config(uList, pList, oList, &ce_info); |
| 446 | |
| 447 | // cbr operation |
| 448 | unsigned int num_cols; |
| 449 | // get number of columns |
| 450 | num_cols = ce_info.numUtilities + ce_info.numParameters; |
| 451 | num_cols = num_cols + ce_info.numObservables; |
| 452 | num_cols = num_cols + 1; |
| 453 | RunCBREngine(uList, pList, oList, &ce_info, num_cols); |
| 454 | // print out results |
| 455 | int i; |
403 | | for (i=0;i<num_cols; i++) |
404 | | //for (i=0;i<mycbr->num_columns; i++) |
405 | | printf("%f, ",retvals[i]); |
| 457 | for (i=0;i<ce_info.numUtilities; i++) |
| 458 | printf("%f, ",uList[i].value); |
| 459 | for (i=0;i<ce_info.numParameters; i++) |
| 460 | printf("%f, ",pList[i].value); |
| 461 | for (i=0;i<ce_info.numObservables; i++) |
| 462 | printf("%f, ",oList[i].value); |
408 | | // clean up database |
409 | | printf("clean cbr database\n"); |
410 | | cbr_free(mycbr); |
411 | | |
412 | | printf("done at client.\n"); |
413 | | return 0; |
414 | | |
| 465 | // send results back to server |
| 466 | char counter[50]; |
| 467 | char var[50]; |
| 468 | // utility |
| 469 | sprintf(counter, "%d", ce_info.numUtilities); |
| 470 | SendMessage(sockfd, counter); |
| 471 | // send utilities |
| 472 | for (i = 0; i < ce_info.numUtilities; i++){ |
| 473 | sprintf(var, "%f", uList[i].value); |
| 474 | SendMessage(sockfd, var); |
| 475 | } |
| 476 | |
| 477 | // parameter |
| 478 | sprintf(counter, "%d", ce_info.numParameters); |
| 479 | SendMessage(sockfd, counter); |
| 480 | // send parameters |
| 481 | for (i = 0; i < ce_info.numParameters; i++){ |
| 482 | sprintf(var, "%f", pList[i].value); |
| 483 | SendMessage(sockfd, var); |
| 484 | } |
| 485 | |
| 486 | // observable |
| 487 | sprintf(counter, "%d", ce_info.numObservables); |
| 488 | SendMessage(sockfd, counter); |
| 489 | // send utilities |
| 490 | for (i = 0; i < ce_info.numObservables; i++){ |
| 491 | sprintf(var, "%f", oList[i].value); |
| 492 | SendMessage(sockfd, var); |
| 493 | } |
| 494 | |