resource/csdk/connectivity/src/camessagehandler.c

   1 /******************************************************************
   2  *
   3  * Copyright 2014 Samsung Electronics All Rights Reserved.
   4  *
   5  *
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  ******************************************************************/
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdint.h>
  25
  26 #include "cainterface.h"
  27 #include "camessagehandler.h"
  28 #include "caremotehandler.h"
  29 #include "cainterfacecontroller.h"
  30 #include "caprotocolmessage.h"
  31 #include "caretransmission.h"
  32 #include "caadapterutils.h"
  33 #include "uqueue.h"
  34 #include "logger.h"
  35 #include "config.h" /* for coap protocol */
  36 #include "cathreadpool.h" /* for thread pool */
  37 #include "caqueueingthread.h"
  38 #include "camutex.h"
  39 #include "oic_malloc.h"
  40 #include "oic_string.h"
  41 #include "canetworkconfigurator.h"
  42
  43 #define TAG PCF("CA")
  44 #define SINGLE_HANDLE
  45
  46 #define MAX_THREAD_POOL_SIZE    20
  47
  48 typedef enum
  49 {
  50     SEND_TYPE_MULTICAST = 0, SEND_TYPE_UNICAST
  51 } CASendDataType_t;
  52
  53 typedef enum
  54 {
  55     CA_REQUEST_DATA = 1,
  56     CA_RESPONSE_DATA = 2,
  57     CA_ERROR_DATA = 3,
  58 } CADataType_t;
  59
  60 typedef struct
  61 {
  62     CASendDataType_t type;
  63     CAEndpoint_t *remoteEndpoint;
  64     CARequestInfo_t *requestInfo;
  65     CAResponseInfo_t *responseInfo;
  66     CAErrorInfo_t *errorInfo;
  67     CAHeaderOption_t *options;
  68     CADataType_t dataType;
  69     uint8_t numOptions;
  70 } CAData_t;
  71
  72 // thread pool handle
  73 static ca_thread_pool_t g_threadPoolHandle = NULL;
  74
  75 // message handler main thread
  76 static CAQueueingThread_t g_sendThread;
  77 static CAQueueingThread_t g_receiveThread;
  78
  79 static CARetransmission_t g_retransmissionContext;
  80
  81 // handler field
  82 static CARequestCallback g_requestHandler = NULL;
  83 static CAResponseCallback g_responseHandler = NULL;
  84 static CAErrorCallback g_errorHandler = NULL;
  85
  86 static void CAErrorHandler(const CAEndpoint_t *endpoint,
  87                            const void *data, uint32_t dataLen,
  88                            CAResult_t result);
  89
  90 static bool CAIsSelectedNetworkAvailable()
  91 {
  92     u_arraylist_t *list = CAGetSelectedNetworkList();
  93     if (!list || list->length == 0)
  94     {
  95         OIC_LOG(ERROR, TAG, "No selected network");
  96         return false;
  97     }
  98
  99     return true;
 100 }
 101
 102 static void CATimeoutCallback(const CAEndpoint_t *endpoint, const void *pdu, uint32_t size)
 103 {
 104     OIC_LOG(DEBUG, TAG, "IN");
 105     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 106     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 107
 108     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
 109     if (NULL == ep)
 110     {
 111         OIC_LOG(ERROR, TAG, "clone failed");
 112         return;
 113     }
 114
 115     CAResponseInfo_t* resInfo = (CAResponseInfo_t*)OICCalloc(1, sizeof(CAResponseInfo_t));
 116
 117     if (NULL == resInfo)
 118     {
 119         OIC_LOG(ERROR, TAG, "calloc failed");
 120         CAFreeEndpoint(ep);
 121         return;
 122     }
 123
 124     resInfo->result = CA_RETRANSMIT_TIMEOUT;
 125     resInfo->info.type = CAGetMessageTypeFromPduBinaryData(pdu, size);
 126     resInfo->info.messageId = CAGetMessageIdFromPduBinaryData(pdu, size);
 127     CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *) pdu, &(resInfo->info));
 128     if (CA_STATUS_OK != res)
 129     {
 130         OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 131         OICFree(resInfo->info.token);
 132         OICFree(resInfo);
 133         CAFreeEndpoint(ep);
 134         return;
 135     }
 136
 137     CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 138     if (NULL == cadata)
 139     {
 140         OIC_LOG(ERROR, TAG, "memory allocation failed !");
 141         CAFreeEndpoint(ep);
 142         OICFree(resInfo);
 143         return;
 144     }
 145
 146     cadata->type = SEND_TYPE_UNICAST;
 147     cadata->remoteEndpoint = ep;
 148     cadata->requestInfo = NULL;
 149     cadata->responseInfo = resInfo;
 150
 151     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 152     OIC_LOG(DEBUG, TAG, "OUT");
 153 }
 154
 155 static void CADataDestroyer(void *data, uint32_t size)
 156 {
 157     OIC_LOG(DEBUG, TAG, "IN");
 158     CAData_t *cadata = (CAData_t *) data;
 159
 160     if (NULL == cadata)
 161     {
 162         OIC_LOG(ERROR, TAG, "cadata is NULL");
 163         return;
 164     }
 165
 166     if (NULL != cadata->remoteEndpoint)
 167     {
 168         CAFreeEndpoint(cadata->remoteEndpoint);
 169     }
 170
 171     if (NULL != cadata->requestInfo)
 172     {
 173         CADestroyRequestInfoInternal((CARequestInfo_t *) cadata->requestInfo);
 174     }
 175
 176     if (NULL != cadata->responseInfo)
 177     {
 178         CADestroyResponseInfoInternal((CAResponseInfo_t *) cadata->responseInfo);
 179     }
 180
 181     if (NULL != cadata->errorInfo)
 182     {
 183        CAInfo_t *info = &cadata->errorInfo->info;
 184        OICFree(info->token);
 185        OICFree(info->options);
 186        OICFree(info->payload);
 187        OICFree(info->resourceUri);
 188        OICFree(cadata->errorInfo);
 189     }
 190
 191     OICFree(cadata);
 192     OIC_LOG(DEBUG, TAG, "OUT");
 193 }
 194
 195 static void CAReceiveThreadProcess(void *threadData)
 196 {
 197     OIC_LOG(DEBUG, TAG, "IN");
 198     // Currently not supported
 199     // This will be enabled when RI supports multi threading
 200 #ifndef SINGLE_HANDLE
 201     CAData_t *data = (CAData_t *) threadData;
 202
 203     if (NULL == data)
 204     {
 205         OIC_LOG(ERROR, TAG, "thread data error!!");
 206         return;
 207     }
 208
 209     // parse the data and call the callbacks.
 210     // #1 parse the data
 211     // #2 get endpoint
 212     CAEndpoint_t *rep = (CAEndpoint_t *)(data->remoteEndpoint);
 213
 214     if (NULL == rep)
 215     {
 216         OIC_LOG(ERROR, TAG, "remoteEndpoint error!!");
 217         return;
 218     }
 219
 220     if (data->requestInfo && g_requestHandler)
 221     {
 222         g_requestHandler(rep, data->requestInfo);
 223     }
 224     else if (data->responseInfo && g_responseHandler)
 225     {
 226         g_responseHandler(rep, data->responseInfo);
 227     }
 228     else if (data->errorInfo && g_errorHandler)
 229     {
 230         g_errorHandler(rep, data->errorInfo);
 231     }
 232
 233 #endif /* SINGLE_HANDLE */
 234     OIC_LOG(DEBUG, TAG, "OUT");
 235 }
 236
 237 static void CASendThreadProcess(void *threadData)
 238 {
 239     OIC_LOG(DEBUG, TAG, "IN");
 240     CAData_t *data = (CAData_t *) threadData;
 241
 242     VERIFY_NON_NULL_VOID(data, TAG, "data");
 243     VERIFY_NON_NULL_VOID(data->remoteEndpoint, TAG, "remoteEndpoint");
 244
 245     CAResult_t res = CA_STATUS_FAILED;
 246
 247     CASendDataType_t type = data->type;
 248
 249     coap_pdu_t *pdu = NULL;
 250
 251     if (SEND_TYPE_UNICAST == type)
 252     {
 253
 254         if (NULL != data->requestInfo)
 255         {
 256             OIC_LOG(DEBUG, TAG, "requestInfo is available..");
 257
 258             pdu = CAGeneratePDU(data->requestInfo->method, &data->requestInfo->info);
 259         }
 260         else if (NULL != data->responseInfo)
 261         {
 262             OIC_LOG(DEBUG, TAG, "responseInfo is available..");
 263
 264             pdu = CAGeneratePDU(data->responseInfo->result, &data->responseInfo->info);
 265         }
 266         else
 267         {
 268             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 269         }
 270
 271         // interface controller function call.
 272         if (NULL != pdu)
 273         {
 274             CALogPDUInfo(pdu);
 275
 276             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 277             if (CA_STATUS_OK != res)
 278             {
 279                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 280                 coap_delete_pdu(pdu);
 281                 return;
 282             }
 283             // for retransmission
 284             res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint, pdu->hdr,
 285                                            pdu->length);
 286             if (CA_STATUS_OK != res)
 287             {
 288                 OIC_LOG_V(INFO, TAG, "retransmission will be not working: %d", res);
 289                 coap_delete_pdu(pdu);
 290                 return;
 291             }
 292
 293             coap_delete_pdu(pdu);
 294         }
 295     }
 296     else if (SEND_TYPE_MULTICAST == type)
 297     {
 298         OIC_LOG(DEBUG, TAG, "both requestInfo & responseInfo is not available");
 299
 300         CAInfo_t *info = &data->requestInfo->info;
 301
 302         info->options = data->options;
 303         info->numOptions = data->numOptions;
 304
 305         pdu = CAGeneratePDU(CA_GET, info);
 306         if (NULL != pdu)
 307         {
 308             CALogPDUInfo(pdu);
 309
 310             res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 311             if (CA_STATUS_OK != res)
 312             {
 313                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 314                 coap_delete_pdu(pdu);
 315                 return;
 316             }
 317
 318             coap_delete_pdu(pdu);
 319         }
 320     }
 321
 322     OIC_LOG(DEBUG, TAG, "OUT");
 323 }
 324
 325 static void CAReceivedPacketCallback(const CAEndpoint_t *endpoint, void *data, uint32_t dataLen)
 326 {
 327     OIC_LOG(DEBUG, TAG, "IN");
 328     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint");
 329     VERIFY_NON_NULL_VOID(data, TAG, "data");
 330
 331     uint32_t code = CA_NOT_FOUND;
 332     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code);
 333     OICFree(data);
 334
 335     if (NULL == pdu)
 336     {
 337         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 338         return;
 339     }
 340
 341     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 342     {
 343         CARequestInfo_t *ReqInfo = (CARequestInfo_t *) OICCalloc(1, sizeof(CARequestInfo_t));
 344         if (NULL == ReqInfo)
 345         {
 346             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 347             coap_delete_pdu(pdu);
 348             return;
 349         }
 350
 351         CAResult_t res = CAGetRequestInfoFromPDU(pdu, ReqInfo);
 352         if (CA_STATUS_OK != res)
 353         {
 354             OIC_LOG_V(ERROR, TAG, "CAGetRequestInfoFromPDU failed : %d", res);
 355             OICFree(ReqInfo);
 356             coap_delete_pdu(pdu);
 357             return;
 358         }
 359
 360         if (NULL != ReqInfo->info.options)
 361         {
 362             uint32_t i;
 363             for (i = 0; i < ReqInfo->info.numOptions; i++)
 364             {
 365                 OIC_LOG_V(DEBUG, TAG, "Request- optionID: %d", ReqInfo->info.options[i].optionID);
 366
 367                 OIC_LOG_V(DEBUG, TAG, "Request- list: %s", ReqInfo->info.options[i].optionData);
 368             }
 369         }
 370
 371         if (NULL != ReqInfo->info.payload)
 372         {
 373             OIC_LOG_V(DEBUG, TAG, "Request- payload: %s", ReqInfo->info.payload);
 374         }
 375         OIC_LOG_V(DEBUG, TAG, "Request- code: %d", ReqInfo->method);
 376         if (NULL != ReqInfo->info.token)
 377         {
 378             OIC_LOG(DEBUG, TAG, "Request- token:");
 379             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ReqInfo->info.token,
 380                            ReqInfo->info.tokenLength);
 381         }
 382         OIC_LOG_V(DEBUG, TAG, "Request- msgID : %d", ReqInfo->info.messageId);
 383         // store the data at queue.
 384         CAData_t *cadata = NULL;
 385         cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 386         if (NULL == cadata)
 387         {
 388             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 389             CADestroyRequestInfoInternal(ReqInfo);
 390             coap_delete_pdu(pdu);
 391             return;
 392         }
 393
 394         cadata->type = SEND_TYPE_UNICAST;
 395         cadata->remoteEndpoint = CACloneEndpoint(endpoint);
 396         cadata->requestInfo = ReqInfo;
 397         cadata->responseInfo = NULL;
 398         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 399     }
 400     else
 401     {
 402         CAResponseInfo_t *ResInfo = (CAResponseInfo_t *) OICCalloc(1, sizeof(CAResponseInfo_t));
 403         if (NULL == ResInfo)
 404         {
 405             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 406             coap_delete_pdu(pdu);
 407             return;
 408         }
 409
 410         CAResult_t res = CAGetResponseInfoFromPDU(pdu, ResInfo);
 411         if (CA_STATUS_OK != res)
 412         {
 413             OIC_LOG_V(ERROR, TAG, "CAGetResponseInfoFromPDU failed : %d", res);
 414             OICFree(ResInfo);
 415             coap_delete_pdu(pdu);
 416             return;
 417         }
 418
 419         if (NULL != ResInfo->info.options)
 420         {
 421             uint32_t i;
 422             for (i = 0; i < ResInfo->info.numOptions; i++)
 423             {
 424                 OIC_LOG_V(DEBUG, TAG, "Response- optionID: %d", ResInfo->info.options[i].optionID);
 425
 426                 OIC_LOG_V(DEBUG, TAG, "Response- list: %s", ResInfo->info.options[i].optionData);
 427             }
 428         }
 429
 430         if (NULL != ResInfo->info.payload)
 431         {
 432             OIC_LOG_V(DEBUG, TAG, "Response- payload: %s", ResInfo->info.payload);
 433         }
 434         OIC_LOG_V(DEBUG, TAG, "Response- code: %d", ResInfo->result);
 435         if (NULL != ResInfo->info.token)
 436         {
 437             OIC_LOG(DEBUG, TAG, "Response- token:");
 438             OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ResInfo->info.token,
 439                            ResInfo->info.tokenLength);
 440         }
 441         OIC_LOG_V(DEBUG, TAG, "Response- msgID: %d", ResInfo->info.messageId);
 442
 443         // store the data at queue.
 444         CAData_t *cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 445         if (NULL == cadata)
 446         {
 447             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 448             CADestroyResponseInfoInternal(ResInfo);
 449             coap_delete_pdu(pdu);
 450             return;
 451         }
 452
 453         cadata->type = SEND_TYPE_UNICAST;
 454         cadata->remoteEndpoint = CACloneEndpoint(endpoint);
 455         cadata->requestInfo = NULL;
 456
 457         // for retransmission
 458         void *retransmissionPdu = NULL;
 459         CARetransmissionReceivedData(&g_retransmissionContext, endpoint, pdu->hdr, pdu->length,
 460                                      &retransmissionPdu);
 461
 462         // get token from saved data in retransmission list
 463         if (retransmissionPdu && CA_EMPTY == code)
 464         {
 465             CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 466                                                &(ResInfo->info));
 467             if (CA_STATUS_OK != res)
 468             {
 469                 OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 470                 OICFree(ResInfo->info.token);
 471             }
 472         }
 473         OICFree(retransmissionPdu);
 474         cadata->responseInfo = ResInfo;
 475
 476         CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 477     }
 478
 479     if (pdu)
 480     {
 481         coap_delete_pdu(pdu);
 482     }
 483     OIC_LOG(DEBUG, TAG, "OUT");
 484 }
 485
 486 static void CANetworkChangedCallback(const CAEndpoint_t *info, CANetworkStatus_t status)
 487 {
 488     OIC_LOG(DEBUG, TAG, "IN");
 489
 490     OIC_LOG(DEBUG, TAG, "OUT");
 491 }
 492
 493 void CAHandleRequestResponseCallbacks()
 494 {
 495
 496 #ifdef SINGLE_HANDLE
 497     // parse the data and call the callbacks.
 498     // #1 parse the data
 499     // #2 get endpoint
 500
 501     ca_mutex_lock(g_receiveThread.threadMutex);
 502
 503     u_queue_message_t *item = u_queue_get_element(g_receiveThread.dataQueue);
 504
 505     ca_mutex_unlock(g_receiveThread.threadMutex);
 506
 507     if (NULL == item)
 508     {
 509         return;
 510     }
 511
 512     // get values
 513     void *msg = item->msg;
 514
 515     if (NULL == msg)
 516     {
 517         return;
 518     }
 519
 520     // get endpoint
 521     CAData_t *td = (CAData_t *) msg;
 522
 523     if (td->requestInfo && g_requestHandler)
 524     {
 525         OIC_LOG_V(DEBUG, TAG, "request callback : %d", td->requestInfo->info.numOptions);
 526         g_requestHandler(td->remoteEndpoint, td->requestInfo);
 527     }
 528     else if (td->responseInfo && g_responseHandler)
 529     {
 530         OIC_LOG_V(DEBUG, TAG, "response callback : %d", td->responseInfo->info.numOptions);
 531         g_responseHandler(td->remoteEndpoint, td->responseInfo);
 532     }
 533     else if (td->errorInfo && g_errorHandler)
 534     {
 535         OIC_LOG_V(DEBUG, TAG, "error callback error: %d", td->errorInfo->result);
 536         g_errorHandler(td->remoteEndpoint, td->errorInfo);
 537     }
 538
 539     CADataDestroyer(msg, sizeof(CAData_t));
 540     OICFree(item);
 541
 542 #endif
 543     OIC_LOG(DEBUG, TAG, "CAHandleRequestResponseCallbacks OUT");
 544 }
 545
 546 CAResult_t CADetachRequestMessage(const CAEndpoint_t *object, const CARequestInfo_t *request)
 547 {
 548     OIC_LOG(DEBUG, TAG, "IN");
 549
 550     VERIFY_NON_NULL(object, TAG, "object");
 551     VERIFY_NON_NULL(request, TAG, "request");
 552
 553     if (false == CAIsSelectedNetworkAvailable())
 554     {
 555         return CA_STATUS_FAILED;
 556     }
 557
 558     CAEndpoint_t *remoteEndpoint = NULL;
 559     CARequestInfo_t *requestInfo = NULL;
 560     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 561     CA_MEMORY_ALLOC_CHECK(data);
 562
 563     // clone remote endpoint
 564     remoteEndpoint = CACloneEndpoint(object);
 565     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 566
 567     // clone request info
 568     requestInfo = CACloneRequestInfo(request);
 569     CA_MEMORY_ALLOC_CHECK(requestInfo);
 570
 571     // save data
 572     data->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 573     data->remoteEndpoint = remoteEndpoint;
 574     data->requestInfo = requestInfo;
 575     data->responseInfo = NULL;
 576     data->options = NULL;
 577     data->numOptions = 0;
 578     if (NULL != requestInfo->info.options && 0 < requestInfo->info.numOptions)
 579     {
 580         uint8_t numOptions = requestInfo->info.numOptions;
 581         // copy data
 582         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 583                                                                         * numOptions);
 584         CA_MEMORY_ALLOC_CHECK(headerOption);
 585
 586         memcpy(headerOption, requestInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 587
 588         data->options = headerOption;
 589         data->numOptions = numOptions;
 590     }
 591
 592     // add thread
 593     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 594     OIC_LOG(DEBUG, TAG, "OUT");
 595     return CA_STATUS_OK;
 596
 597 // memory error label.
 598 memory_error_exit:
 599     CAFreeEndpoint(remoteEndpoint);
 600     CADestroyRequestInfoInternal(requestInfo);
 601
 602     OICFree(data);
 603     OIC_LOG(DEBUG, TAG, "OUT");
 604     return CA_MEMORY_ALLOC_FAILED;
 605 }
 606
 607 CAResult_t CADetachResponseMessage(const CAEndpoint_t *object,
 608                                    const CAResponseInfo_t *response)
 609 {
 610     OIC_LOG(DEBUG, TAG, "IN");
 611     VERIFY_NON_NULL(object, TAG, "object");
 612     VERIFY_NON_NULL(response, TAG, "response");
 613
 614     if (false == CAIsSelectedNetworkAvailable())
 615     {
 616         return CA_STATUS_FAILED;
 617     }
 618
 619     CAEndpoint_t *remoteEndpoint = NULL;
 620     CAResponseInfo_t *responseInfo = NULL;
 621
 622     // allocate & initialize
 623     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 624     CA_MEMORY_ALLOC_CHECK(data);
 625
 626     // clone remote endpoint
 627     remoteEndpoint = CACloneEndpoint(object);
 628     CA_MEMORY_ALLOC_CHECK(remoteEndpoint);
 629
 630     // clone response info
 631     responseInfo = CACloneResponseInfo(response);
 632     CA_MEMORY_ALLOC_CHECK(responseInfo);
 633
 634     // save data
 635     data->type = SEND_TYPE_UNICAST;
 636     data->remoteEndpoint = remoteEndpoint;
 637     data->requestInfo = NULL;
 638     data->responseInfo = responseInfo;
 639     data->options = NULL;
 640     data->numOptions = 0;
 641     if (NULL != responseInfo->info.options && 0 < responseInfo->info.numOptions)
 642     {
 643         uint8_t numOptions = responseInfo->info.numOptions;
 644         // copy data
 645         CAHeaderOption_t *headerOption = (CAHeaderOption_t *) OICMalloc(sizeof(CAHeaderOption_t)
 646                                                                         * numOptions);
 647         CA_MEMORY_ALLOC_CHECK(headerOption);
 648
 649         memcpy(headerOption, responseInfo->info.options, sizeof(CAHeaderOption_t) * numOptions);
 650
 651         data->options = headerOption;
 652         data->numOptions = numOptions;
 653     }
 654
 655     // add thread
 656     CAQueueingThreadAddData(&g_sendThread, data, sizeof(CAData_t));
 657
 658     OIC_LOG(DEBUG, TAG, "OUT");
 659     return CA_STATUS_OK;
 660
 661 // memory error label.
 662 memory_error_exit:
 663     CAFreeEndpoint(remoteEndpoint);
 664     CADestroyResponseInfoInternal(responseInfo);
 665     OICFree(data);
 666     OIC_LOG(DEBUG, TAG, "OUT");
 667
 668     return CA_MEMORY_ALLOC_FAILED;
 669 }
 670
 671 CAResult_t CADetachMessageResourceUri(const CAURI_t resourceUri, const CAToken_t token,
 672                                       uint8_t tokenLength, const CAHeaderOption_t *options,
 673                                       uint8_t numOptions)
 674 {
 675     return CA_NOT_SUPPORTED;
 676 }
 677
 678 void CASetInterfaceCallbacks(CARequestCallback ReqHandler, CAResponseCallback RespHandler,
 679                              CAErrorCallback errroHandler)
 680 {
 681     OIC_LOG(DEBUG, TAG, "IN");
 682     g_requestHandler = ReqHandler;
 683     g_responseHandler = RespHandler;
 684     g_errorHandler = errroHandler;
 685     OIC_LOG(DEBUG, TAG, "OUT");
 686 }
 687
 688 CAResult_t CAInitializeMessageHandler()
 689 {
 690     OIC_LOG(DEBUG, TAG, "IN");
 691     CASetPacketReceivedCallback(CAReceivedPacketCallback);
 692
 693     CASetNetworkChangeCallback(CANetworkChangedCallback);
 694     CASetErrorHandleCallback(CAErrorHandler);
 695
 696     // create thread pool
 697     CAResult_t res = ca_thread_pool_init(MAX_THREAD_POOL_SIZE, &g_threadPoolHandle);
 698
 699     if (res != CA_STATUS_OK)
 700     {
 701         OIC_LOG(ERROR, TAG, "thread pool initialize error.");
 702         return res;
 703     }
 704
 705     // send thread initialize
 706     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_sendThread, g_threadPoolHandle,
 707                                                    CASendThreadProcess, CADataDestroyer))
 708     {
 709         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 710         return CA_STATUS_FAILED;
 711     }
 712
 713     // start send thread
 714     res = CAQueueingThreadStart(&g_sendThread);
 715
 716     if (res != CA_STATUS_OK)
 717     {
 718         OIC_LOG(ERROR, TAG, "thread start error(send thread).");
 719         ca_thread_pool_free(g_threadPoolHandle);
 720         g_threadPoolHandle = NULL;
 721         return res;
 722     }
 723
 724     // receive thread initialize
 725     if (CA_STATUS_OK != CAQueueingThreadInitialize(&g_receiveThread, g_threadPoolHandle,
 726                                                    CAReceiveThreadProcess, CADataDestroyer))
 727     {
 728         OIC_LOG(ERROR, TAG, "Failed to Initialize receive queue thread");
 729         return CA_STATUS_FAILED;
 730     }
 731
 732 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 733     // start receive thread
 734     res = CAQueueingThreadStart(&gReceiveThread);
 735
 736     if (res != CA_STATUS_OK)
 737     {
 738         OIC_LOG(ERROR, TAG, "thread start error(receive thread).");
 739         return res;
 740     }
 741 #endif
 742
 743     // retransmission initialize
 744     CARetransmissionInitialize(&g_retransmissionContext, g_threadPoolHandle, CASendUnicastData,
 745                                CATimeoutCallback, NULL);
 746
 747     // start retransmission
 748     res = CARetransmissionStart(&g_retransmissionContext);
 749
 750     if (res != CA_STATUS_OK)
 751     {
 752         OIC_LOG(ERROR, TAG, "thread start error(retransmission thread).");
 753         return res;
 754     }
 755
 756     // initialize interface adapters by controller
 757     CAInitializeAdapters(g_threadPoolHandle);
 758     OIC_LOG(DEBUG, TAG, "OUT");
 759     return CA_STATUS_OK;
 760 }
 761
 762 void CATerminateMessageHandler()
 763 {
 764     OIC_LOG(DEBUG, TAG, "IN");
 765     CATransportAdapter_t connType;
 766     u_arraylist_t *list = CAGetSelectedNetworkList();
 767     uint32_t length = u_arraylist_length(list);
 768
 769     uint32_t i = 0;
 770     for (i = 0; i < length; i++)
 771     {
 772         void* ptrType = u_arraylist_get(list, i);
 773
 774         if (NULL == ptrType)
 775         {
 776             continue;
 777         }
 778
 779         connType = *(CATransportAdapter_t *)ptrType;
 780         CAStopAdapter(connType);
 781     }
 782
 783     // stop retransmission
 784     if (NULL != g_retransmissionContext.threadMutex)
 785     {
 786         CARetransmissionStop(&g_retransmissionContext);
 787     }
 788
 789     // stop thread
 790     // delete thread data
 791     if (NULL != g_sendThread.threadMutex)
 792     {
 793         CAQueueingThreadStop(&g_sendThread);
 794     }
 795
 796     // stop thread
 797     // delete thread data
 798     if (NULL != g_receiveThread.threadMutex)
 799     {
 800 #ifndef SINGLE_HANDLE // This will be enabled when RI supports multi threading
 801         CAQueueingThreadStop(&gReceiveThread);
 802 #endif
 803     }
 804
 805     // destroy thread pool
 806     if (NULL != g_threadPoolHandle)
 807     {
 808         ca_thread_pool_free(g_threadPoolHandle);
 809         g_threadPoolHandle = NULL;
 810     }
 811
 812     CARetransmissionDestroy(&g_retransmissionContext);
 813     CAQueueingThreadDestroy(&g_sendThread);
 814     CAQueueingThreadDestroy(&g_receiveThread);
 815
 816     // terminate interface adapters by controller
 817     CATerminateAdapters();
 818
 819     OIC_LOG(DEBUG, TAG, "OUT");
 820 }
 821
 822 void CALogPDUInfo(coap_pdu_t *pdu)
 823 {
 824     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 825
 826     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
 827
 828     OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->type);
 829
 830     OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->code);
 831
 832     OIC_LOG_V(DEBUG, TAG, "PDU Maker - id : %d", ntohs(pdu->hdr->id));
 833
 834     OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
 835
 836     OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->token, pdu->hdr->token_length);
 837 }
 838
 839 void CAErrorHandler(const CAEndpoint_t *endpoint,
 840                     const void *data, uint32_t dataLen,
 841                     CAResult_t result)
 842 {
 843     OIC_LOG(DEBUG, TAG, "IN");
 844     VERIFY_NON_NULL_VOID(endpoint, TAG, "remoteEndpoint");
 845     VERIFY_NON_NULL_VOID(data, TAG, "data");
 846
 847     uint32_t code = CA_NOT_FOUND;
 848     //Do not free remoteEndpoint and data. Currently they will be freed in data thread
 849     //Get PDU data
 850     coap_pdu_t *pdu = (coap_pdu_t *)CAParsePDU((const char *)data, dataLen, &code);
 851     if (NULL == pdu)
 852     {
 853         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 854         return;
 855     }
 856
 857     CAErrorInfo_t *errorInfo = (CAErrorInfo_t *)OICCalloc(1, sizeof (CAErrorInfo_t));
 858     if (NULL == errorInfo)
 859     {
 860         OIC_LOG(ERROR, TAG, "CAErrorHandler, Memory allocation failed!");
 861         coap_delete_pdu(pdu);
 862         return;
 863     }
 864
 865     CAResult_t res = CAGetErrorInfoFromPDU(pdu, errorInfo);
 866     if (CA_STATUS_OK != res)
 867     {
 868         OIC_LOG_V(ERROR, TAG, "CAGetErrorInfoFromPDU failed : %d", res);
 869         OICFree(errorInfo);
 870         coap_delete_pdu(pdu);
 871        return;
 872     }
 873
 874     errorInfo->result = result;
 875     OIC_LOG_V(DEBUG, TAG, "error : %d", result);
 876     if (NULL != errorInfo->info.payload)
 877     {
 878         OIC_LOG_V(DEBUG, TAG, "error, payload: %s", errorInfo->info.payload);
 879     }
 880
 881     OIC_LOG(DEBUG, TAG, "error, token");
 882     OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) errorInfo->info.token,
 883                    errorInfo->info.tokenLength);
 884     OIC_LOG_V(DEBUG, TAG, "CAErrorHandler, msgID : %d", errorInfo->info.messageId);
 885
 886     CAEndpoint_t *rep = NULL;
 887     rep = CACloneEndpoint(endpoint);
 888     if (!rep)
 889     {
 890         OIC_LOG(ERROR, TAG, "CAErrorHandler, CloneEndpoint Failed");
 891         OICFree(errorInfo);
 892         coap_delete_pdu(pdu);
 893         return;
 894     }
 895
 896     // store the data at queue.
 897     CAData_t *cadata = NULL;
 898     cadata = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 899     if (NULL == cadata)
 900     {
 901         OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed !");
 902         CAFreeEndpoint(rep);
 903         OICFree(errorInfo);
 904         coap_delete_pdu(pdu);
 905         return;
 906     }
 907
 908     cadata->remoteEndpoint = rep;
 909     cadata->requestInfo = NULL;
 910     cadata->responseInfo = NULL;
 911     cadata->errorInfo = errorInfo;
 912     cadata->dataType = CA_ERROR_DATA;
 913
 914     CAQueueingThreadAddData(&g_receiveThread, cadata, sizeof(CAData_t));
 915     coap_delete_pdu(pdu);
 916
 917     return;
 918 }